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- Committer: Björn Påhlsson
- Date: 2010-09-01 18:03:03 UTC
- mto: (237.7.1 mandos)
- mto: This revision was merged to the branch mainline in revision 270.
- Revision ID: belorn@fukt.bsnet.se-20100901180303-u47edb73fczu56ob
bug fixes that prevent problems when runing server as root
- files added:
- initramfs-tools-hook-conf
- files removed:
- DBUS-API
- debian/source
- debian/upstream
- 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 © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
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 = "1.7.20"
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
It is instantiated once, and simulates having an Avahi module."""
281
IF_UNSPEC = -1 # avahi-common/address.h
282
PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
285
DBUS_NAME = "org.freedesktop.Avahi"
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
DBUS_PATH_SERVER = "/"
289
290
def string_array_to_txt_array(self, 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
avahi = Avahi()
302
81
SO_BINDTODEVICE = None
82
83
84
version = "1.0.14"
85
86
logger = logging.Logger(u'mandos')
87
syslogger = (logging.handlers.SysLogHandler
88
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
89
address = "/dev/log"))
90
syslogger.setFormatter(logging.Formatter
91
(u'Mandos [%(process)d]: %(levelname)s:'
92
u' %(message)s'))
93
logger.addHandler(syslogger)
94
95
console = logging.StreamHandler()
96
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
97
u' %(levelname)s:'
98
u' %(message)s'))
99
logger.addHandler(console)
303
100
304
101
class AvahiError(Exception):
305
102
def __init__(self, value, *args, **kwargs):
306
103
self.value = value
307
return super(AvahiError, self).__init__(value, *args,
308
**kwargs)
309
104
super(AvahiError, self).__init__(value, *args, **kwargs)
105
def __unicode__(self):
106
return unicode(repr(self.value))
310
107
311
108
class AvahiServiceError(AvahiError):
312
109
pass
313
110
314
315
111
class AvahiGroupError(AvahiError):
316
112
pass
317
113
318
114
319
115
class AvahiService(object):
320
116
"""An Avahi (Zeroconf) service.
321
117
322
118
Attributes:
323
119
interface: integer; avahi.IF_UNSPEC or an interface index.
324
120
Used to optionally bind to the specified interface.
325
name: string; Example: 'Mandos'
326
type: string; Example: '_mandos._tcp'.
327
See <https://www.iana.org/assignments/service-names-port-numbers>
121
name: string; Example: u'Mandos'
122
type: string; Example: u'_mandos._tcp'.
123
See <http://www.dns-sd.org/ServiceTypes.html>
328
124
port: integer; what port to announce
329
125
TXT: list of strings; TXT record for the service
330
126
domain: string; Domain to publish on, default to .local if empty.
336
132
server: D-Bus Server
337
133
bus: dbus.SystemBus()
338
134
"""
339
340
def __init__(self,
341
interface=avahi.IF_UNSPEC,
342
name=None,
343
servicetype=None,
344
port=None,
345
TXT=None,
346
domain="",
347
host="",
348
max_renames=32768,
349
protocol=avahi.PROTO_UNSPEC,
350
bus=None):
135
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
136
servicetype = None, port = None, TXT = None,
137
domain = u"", host = u"", max_renames = 32768,
138
protocol = avahi.PROTO_UNSPEC, bus = None):
351
139
self.interface = interface
352
140
self.name = name
353
141
self.type = servicetype
361
149
self.group = None # our entry group
362
150
self.server = None
363
151
self.bus = bus
364
self.entry_group_state_changed_match = None
365
366
def rename(self, remove=True):
152
def rename(self):
367
153
"""Derived from the Avahi example code"""
368
154
if self.rename_count >= self.max_renames:
369
logger.critical("No suitable Zeroconf service name found"
370
" after %i retries, exiting.",
155
logger.critical(u"No suitable Zeroconf service name found"
156
u" after %i retries, exiting.",
371
157
self.rename_count)
372
raise AvahiServiceError("Too many renames")
373
self.name = str(
374
self.server.GetAlternativeServiceName(self.name))
158
raise AvahiServiceError(u"Too many renames")
159
self.name = self.server.GetAlternativeServiceName(self.name)
160
logger.info(u"Changing Zeroconf service name to %r ...",
161
unicode(self.name))
162
syslogger.setFormatter(logging.Formatter
163
(u'Mandos (%s) [%%(process)d]:'
164
u' %%(levelname)s: %%(message)s'
165
% self.name))
166
self.remove()
167
self.add()
375
168
self.rename_count += 1
376
logger.info("Changing Zeroconf service name to %r ...",
377
self.name)
378
if remove:
379
self.remove()
380
try:
381
self.add()
382
except dbus.exceptions.DBusException as error:
383
if (error.get_dbus_name()
384
== "org.freedesktop.Avahi.CollisionError"):
385
logger.info("Local Zeroconf service name collision.")
386
return self.rename(remove=False)
387
else:
388
logger.critical("D-Bus Exception", exc_info=error)
389
self.cleanup()
390
os._exit(1)
391
392
169
def remove(self):
393
170
"""Derived from the Avahi example code"""
394
if self.entry_group_state_changed_match is not None:
395
self.entry_group_state_changed_match.remove()
396
self.entry_group_state_changed_match = None
397
171
if self.group is not None:
398
172
self.group.Reset()
399
400
173
def add(self):
401
174
"""Derived from the Avahi example code"""
402
self.remove()
403
175
if self.group is None:
404
176
self.group = dbus.Interface(
405
177
self.bus.get_object(avahi.DBUS_NAME,
406
178
self.server.EntryGroupNew()),
407
179
avahi.DBUS_INTERFACE_ENTRY_GROUP)
408
self.entry_group_state_changed_match = (
409
self.group.connect_to_signal(
410
'StateChanged', self.entry_group_state_changed))
411
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
180
self.group.connect_to_signal('StateChanged',
181
self
182
.entry_group_state_changed)
183
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
412
184
self.name, self.type)
413
185
self.group.AddService(
414
186
self.interface,
419
191
dbus.UInt16(self.port),
420
192
avahi.string_array_to_txt_array(self.TXT))
421
193
self.group.Commit()
422
423
194
def entry_group_state_changed(self, state, error):
424
195
"""Derived from the Avahi example code"""
425
logger.debug("Avahi entry group state change: %i", state)
426
196
logger.debug(u"Avahi state change: %i", state)
197
427
198
if state == avahi.ENTRY_GROUP_ESTABLISHED:
428
logger.debug("Zeroconf service established.")
199
logger.debug(u"Zeroconf service established.")
429
200
elif state == avahi.ENTRY_GROUP_COLLISION:
430
logger.info("Zeroconf service name collision.")
201
logger.warning(u"Zeroconf service name collision.")
431
202
self.rename()
432
203
elif state == avahi.ENTRY_GROUP_FAILURE:
433
logger.critical("Avahi: Error in group state changed %s",
434
str(error))
435
raise AvahiGroupError("State changed: {!s}".format(error))
436
204
logger.critical(u"Avahi: Error in group state changed %s",
205
unicode(error))
206
raise AvahiGroupError(u"State changed: %s"
207
% unicode(error))
437
208
def cleanup(self):
438
209
"""Derived from the Avahi example code"""
439
210
if self.group is not None:
440
try:
441
self.group.Free()
442
except (dbus.exceptions.UnknownMethodException,
443
dbus.exceptions.DBusException):
444
pass
211
self.group.Free()
445
212
self.group = None
446
self.remove()
447
448
def server_state_changed(self, state, error=None):
213
def server_state_changed(self, state):
449
214
"""Derived from the Avahi example code"""
450
logger.debug("Avahi server state change: %i", state)
451
bad_states = {
452
avahi.SERVER_INVALID: "Zeroconf server invalid",
453
avahi.SERVER_REGISTERING: None,
454
avahi.SERVER_COLLISION: "Zeroconf server name collision",
455
avahi.SERVER_FAILURE: "Zeroconf server failure",
456
}
457
if state in bad_states:
458
if bad_states[state] is not None:
459
if error is None:
460
logger.error(bad_states[state])
461
else:
462
logger.error(bad_states[state] + ": %r", error)
463
self.cleanup()
215
if state == avahi.SERVER_COLLISION:
216
logger.error(u"Zeroconf server name collision")
217
self.remove()
464
218
elif state == avahi.SERVER_RUNNING:
465
try:
466
self.add()
467
except dbus.exceptions.DBusException as error:
468
if (error.get_dbus_name()
469
== "org.freedesktop.Avahi.CollisionError"):
470
logger.info("Local Zeroconf service name"
471
" collision.")
472
return self.rename(remove=False)
473
else:
474
logger.critical("D-Bus Exception", exc_info=error)
475
self.cleanup()
476
os._exit(1)
477
else:
478
if error is None:
479
logger.debug("Unknown state: %r", state)
480
else:
481
logger.debug("Unknown state: %r: %r", state, error)
482
219
self.add()
483
220
def activate(self):
484
221
"""Derived from the Avahi example code"""
485
222
if self.server is None:
486
223
self.server = dbus.Interface(
487
224
self.bus.get_object(avahi.DBUS_NAME,
488
avahi.DBUS_PATH_SERVER,
489
follow_name_owner_changes=True),
225
avahi.DBUS_PATH_SERVER),
490
226
avahi.DBUS_INTERFACE_SERVER)
491
self.server.connect_to_signal("StateChanged",
492
self.server_state_changed)
227
self.server.connect_to_signal(u"StateChanged",
228
self.server_state_changed)
493
229
self.server_state_changed(self.server.GetState())
494
230
495
231
496
class AvahiServiceToSyslog(AvahiService):
497
def rename(self, *args, **kwargs):
498
"""Add the new name to the syslog messages"""
499
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
500
syslogger.setFormatter(logging.Formatter(
501
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
502
.format(self.name)))
503
return ret
504
505
506
# Pretend that we have a GnuTLS module
507
class GnuTLS(object):
508
"""This isn't so much a class as it is a module-like namespace.
509
It is instantiated once, and simulates having a GnuTLS module."""
510
511
library = ctypes.util.find_library("gnutls")
512
if library is None:
513
library = ctypes.util.find_library("gnutls-deb0")
514
_library = ctypes.cdll.LoadLibrary(library)
515
del library
516
_need_version = b"3.3.0"
517
_tls_rawpk_version = b"3.6.6"
518
519
def __init__(self):
520
# Need to use "self" here, since this method is called before
521
# the assignment to the "gnutls" global variable happens.
522
if self.check_version(self._need_version) is None:
523
raise self.Error("Needs GnuTLS {} or later"
524
.format(self._need_version))
525
526
# Unless otherwise indicated, the constants and types below are
527
# all from the gnutls/gnutls.h C header file.
528
529
# Constants
530
E_SUCCESS = 0
531
E_INTERRUPTED = -52
532
E_AGAIN = -28
533
CRT_OPENPGP = 2
534
CRT_RAWPK = 3
535
CLIENT = 2
536
SHUT_RDWR = 0
537
CRD_CERTIFICATE = 1
538
E_NO_CERTIFICATE_FOUND = -49
539
X509_FMT_DER = 0
540
NO_TICKETS = 1<<10
541
ENABLE_RAWPK = 1<<18
542
CTYPE_PEERS = 3
543
KEYID_USE_SHA256 = 1 # gnutls/x509.h
544
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
545
546
# Types
547
class session_int(ctypes.Structure):
548
_fields_ = []
549
session_t = ctypes.POINTER(session_int)
550
551
class certificate_credentials_st(ctypes.Structure):
552
_fields_ = []
553
certificate_credentials_t = ctypes.POINTER(
554
certificate_credentials_st)
555
certificate_type_t = ctypes.c_int
556
557
class datum_t(ctypes.Structure):
558
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
559
('size', ctypes.c_uint)]
560
561
class openpgp_crt_int(ctypes.Structure):
562
_fields_ = []
563
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
564
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
565
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
566
credentials_type_t = ctypes.c_int
567
transport_ptr_t = ctypes.c_void_p
568
close_request_t = ctypes.c_int
569
570
# Exceptions
571
class Error(Exception):
572
# We need to use the class name "GnuTLS" here, since this
573
# exception might be raised from within GnuTLS.__init__,
574
# which is called before the assignment to the "gnutls"
575
# global variable has happened.
576
def __init__(self, message=None, code=None, args=()):
577
# Default usage is by a message string, but if a return
578
# code is passed, convert it to a string with
579
# gnutls.strerror()
580
self.code = code
581
if message is None and code is not None:
582
message = GnuTLS.strerror(code)
583
return super(GnuTLS.Error, self).__init__(
584
message, *args)
585
586
class CertificateSecurityError(Error):
587
pass
588
589
# Classes
590
class Credentials(object):
591
def __init__(self):
592
self._c_object = gnutls.certificate_credentials_t()
593
gnutls.certificate_allocate_credentials(
594
ctypes.byref(self._c_object))
595
self.type = gnutls.CRD_CERTIFICATE
596
597
def __del__(self):
598
gnutls.certificate_free_credentials(self._c_object)
599
600
class ClientSession(object):
601
def __init__(self, socket, credentials=None):
602
self._c_object = gnutls.session_t()
603
gnutls_flags = gnutls.CLIENT
604
if gnutls.check_version("3.5.6"):
605
gnutls_flags |= gnutls.NO_TICKETS
606
if gnutls.has_rawpk:
607
gnutls_flags |= gnutls.ENABLE_RAWPK
608
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
609
del gnutls_flags
610
gnutls.set_default_priority(self._c_object)
611
gnutls.transport_set_ptr(self._c_object, socket.fileno())
612
gnutls.handshake_set_private_extensions(self._c_object,
613
True)
614
self.socket = socket
615
if credentials is None:
616
credentials = gnutls.Credentials()
617
gnutls.credentials_set(self._c_object, credentials.type,
618
ctypes.cast(credentials._c_object,
619
ctypes.c_void_p))
620
self.credentials = credentials
621
622
def __del__(self):
623
gnutls.deinit(self._c_object)
624
625
def handshake(self):
626
return gnutls.handshake(self._c_object)
627
628
def send(self, data):
629
data = bytes(data)
630
data_len = len(data)
631
while data_len > 0:
632
data_len -= gnutls.record_send(self._c_object,
633
data[-data_len:],
634
data_len)
635
636
def bye(self):
637
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
638
639
# Error handling functions
640
def _error_code(result):
641
"""A function to raise exceptions on errors, suitable
642
for the 'restype' attribute on ctypes functions"""
643
if result >= 0:
644
return result
645
if result == gnutls.E_NO_CERTIFICATE_FOUND:
646
raise gnutls.CertificateSecurityError(code=result)
647
raise gnutls.Error(code=result)
648
649
def _retry_on_error(result, func, arguments):
650
"""A function to retry on some errors, suitable
651
for the 'errcheck' attribute on ctypes functions"""
652
while result < 0:
653
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
654
return _error_code(result)
655
result = func(*arguments)
656
return result
657
658
# Unless otherwise indicated, the function declarations below are
659
# all from the gnutls/gnutls.h C header file.
660
661
# Functions
662
priority_set_direct = _library.gnutls_priority_set_direct
663
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
664
ctypes.POINTER(ctypes.c_char_p)]
665
priority_set_direct.restype = _error_code
666
667
init = _library.gnutls_init
668
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
669
init.restype = _error_code
670
671
set_default_priority = _library.gnutls_set_default_priority
672
set_default_priority.argtypes = [session_t]
673
set_default_priority.restype = _error_code
674
675
record_send = _library.gnutls_record_send
676
record_send.argtypes = [session_t, ctypes.c_void_p,
677
ctypes.c_size_t]
678
record_send.restype = ctypes.c_ssize_t
679
record_send.errcheck = _retry_on_error
680
681
certificate_allocate_credentials = (
682
_library.gnutls_certificate_allocate_credentials)
683
certificate_allocate_credentials.argtypes = [
684
ctypes.POINTER(certificate_credentials_t)]
685
certificate_allocate_credentials.restype = _error_code
686
687
certificate_free_credentials = (
688
_library.gnutls_certificate_free_credentials)
689
certificate_free_credentials.argtypes = [
690
certificate_credentials_t]
691
certificate_free_credentials.restype = None
692
693
handshake_set_private_extensions = (
694
_library.gnutls_handshake_set_private_extensions)
695
handshake_set_private_extensions.argtypes = [session_t,
696
ctypes.c_int]
697
handshake_set_private_extensions.restype = None
698
699
credentials_set = _library.gnutls_credentials_set
700
credentials_set.argtypes = [session_t, credentials_type_t,
701
ctypes.c_void_p]
702
credentials_set.restype = _error_code
703
704
strerror = _library.gnutls_strerror
705
strerror.argtypes = [ctypes.c_int]
706
strerror.restype = ctypes.c_char_p
707
708
certificate_type_get = _library.gnutls_certificate_type_get
709
certificate_type_get.argtypes = [session_t]
710
certificate_type_get.restype = _error_code
711
712
certificate_get_peers = _library.gnutls_certificate_get_peers
713
certificate_get_peers.argtypes = [session_t,
714
ctypes.POINTER(ctypes.c_uint)]
715
certificate_get_peers.restype = ctypes.POINTER(datum_t)
716
717
global_set_log_level = _library.gnutls_global_set_log_level
718
global_set_log_level.argtypes = [ctypes.c_int]
719
global_set_log_level.restype = None
720
721
global_set_log_function = _library.gnutls_global_set_log_function
722
global_set_log_function.argtypes = [log_func]
723
global_set_log_function.restype = None
724
725
deinit = _library.gnutls_deinit
726
deinit.argtypes = [session_t]
727
deinit.restype = None
728
729
handshake = _library.gnutls_handshake
730
handshake.argtypes = [session_t]
731
handshake.restype = _error_code
732
handshake.errcheck = _retry_on_error
733
734
transport_set_ptr = _library.gnutls_transport_set_ptr
735
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
736
transport_set_ptr.restype = None
737
738
bye = _library.gnutls_bye
739
bye.argtypes = [session_t, close_request_t]
740
bye.restype = _error_code
741
bye.errcheck = _retry_on_error
742
743
check_version = _library.gnutls_check_version
744
check_version.argtypes = [ctypes.c_char_p]
745
check_version.restype = ctypes.c_char_p
746
747
has_rawpk = bool(check_version(_tls_rawpk_version))
748
749
if has_rawpk:
750
# Types
751
class pubkey_st(ctypes.Structure):
752
_fields = []
753
pubkey_t = ctypes.POINTER(pubkey_st)
754
755
x509_crt_fmt_t = ctypes.c_int
756
757
# All the function declarations below are from gnutls/abstract.h
758
pubkey_init = _library.gnutls_pubkey_init
759
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
760
pubkey_init.restype = _error_code
761
762
pubkey_import = _library.gnutls_pubkey_import
763
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
764
x509_crt_fmt_t]
765
pubkey_import.restype = _error_code
766
767
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
768
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
769
ctypes.POINTER(ctypes.c_ubyte),
770
ctypes.POINTER(ctypes.c_size_t)]
771
pubkey_get_key_id.restype = _error_code
772
773
pubkey_deinit = _library.gnutls_pubkey_deinit
774
pubkey_deinit.argtypes = [pubkey_t]
775
pubkey_deinit.restype = None
776
else:
777
# All the function declarations below are from gnutls/openpgp.h
778
779
openpgp_crt_init = _library.gnutls_openpgp_crt_init
780
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
781
openpgp_crt_init.restype = _error_code
782
783
openpgp_crt_import = _library.gnutls_openpgp_crt_import
784
openpgp_crt_import.argtypes = [openpgp_crt_t,
785
ctypes.POINTER(datum_t),
786
openpgp_crt_fmt_t]
787
openpgp_crt_import.restype = _error_code
788
789
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
790
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
791
ctypes.POINTER(ctypes.c_uint)]
792
openpgp_crt_verify_self.restype = _error_code
793
794
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
795
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
796
openpgp_crt_deinit.restype = None
797
798
openpgp_crt_get_fingerprint = (
799
_library.gnutls_openpgp_crt_get_fingerprint)
800
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
801
ctypes.c_void_p,
802
ctypes.POINTER(
803
ctypes.c_size_t)]
804
openpgp_crt_get_fingerprint.restype = _error_code
805
806
if check_version("3.6.4"):
807
certificate_type_get2 = _library.gnutls_certificate_type_get2
808
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
809
certificate_type_get2.restype = _error_code
810
811
# Remove non-public functions
812
del _error_code, _retry_on_error
813
# Create the global "gnutls" object, simulating a module
814
gnutls = GnuTLS()
815
816
817
def call_pipe(connection, # : multiprocessing.Connection
818
func, *args, **kwargs):
819
"""This function is meant to be called by multiprocessing.Process
820
821
This function runs func(*args, **kwargs), and writes the resulting
822
return value on the provided multiprocessing.Connection.
823
"""
824
connection.send(func(*args, **kwargs))
825
connection.close()
826
827
828
232
class Client(object):
829
233
"""A representation of a client host served by this server.
830
234
831
235
Attributes:
832
approved: bool(); 'None' if not yet approved/disapproved
833
approval_delay: datetime.timedelta(); Time to wait for approval
834
approval_duration: datetime.timedelta(); Duration of one approval
236
name: string; from the config file, used in log messages and
237
D-Bus identifiers
238
fingerprint: string (40 or 32 hexadecimal digits); used to
239
uniquely identify the client
240
secret: bytestring; sent verbatim (over TLS) to client
241
host: string; available for use by the checker command
242
created: datetime.datetime(); (UTC) object creation
243
last_enabled: datetime.datetime(); (UTC)
244
enabled: bool()
245
last_checked_ok: datetime.datetime(); (UTC) or None
246
timeout: datetime.timedelta(); How long from last_checked_ok
247
until this client is disabled
248
interval: datetime.timedelta(); How often to start a new checker
249
disable_hook: If set, called by disable() as disable_hook(self)
835
250
checker: subprocess.Popen(); a running checker process used
836
251
to see if the client lives.
837
252
'None' if no process is running.
838
checker_callback_tag: a GLib event source tag, or None
839
checker_command: string; External command which is run to check
840
if client lives. %() expansions are done at
253
checker_initiator_tag: a gobject event source tag, or None
254
disable_initiator_tag: - '' -
255
checker_callback_tag: - '' -
256
checker_command: string; External command which is run to check if
257
client lives. %() expansions are done at
841
258
runtime with vars(self) as dict, so that for
842
259
instance %(name)s can be used in the command.
843
checker_initiator_tag: a GLib event source tag, or None
844
created: datetime.datetime(); (UTC) object creation
845
client_structure: Object describing what attributes a client has
846
and is used for storing the client at exit
847
260
current_checker_command: string; current running checker_command
848
disable_initiator_tag: a GLib event source tag, or None
849
enabled: bool()
850
fingerprint: string (40 or 32 hexadecimal digits); used to
851
uniquely identify an OpenPGP client
852
key_id: string (64 hexadecimal digits); used to uniquely identify
853
a client using raw public keys
854
host: string; available for use by the checker command
855
interval: datetime.timedelta(); How often to start a new checker
856
last_approval_request: datetime.datetime(); (UTC) or None
857
last_checked_ok: datetime.datetime(); (UTC) or None
858
last_checker_status: integer between 0 and 255 reflecting exit
859
status of last checker. -1 reflects crashed
860
checker, -2 means no checker completed yet.
861
last_checker_signal: The signal which killed the last checker, if
862
last_checker_status is -1
863
last_enabled: datetime.datetime(); (UTC) or None
864
name: string; from the config file, used in log messages and
865
D-Bus identifiers
866
secret: bytestring; sent verbatim (over TLS) to client
867
timeout: datetime.timedelta(); How long from last_checked_ok
868
until this client is disabled
869
extended_timeout: extra long timeout when secret has been sent
870
runtime_expansions: Allowed attributes for runtime expansion.
871
expires: datetime.datetime(); time (UTC) when a client will be
872
disabled, or None
873
server_settings: The server_settings dict from main()
261
approved_delay: datetime.timedelta(); Time to wait for approval
262
_approved: bool(); 'None' if not yet approved/disapproved
263
approved_duration: datetime.timedelta(); Duration of one approval
874
264
"""
875
876
runtime_expansions = ("approval_delay", "approval_duration",
877
"created", "enabled", "expires", "key_id",
878
"fingerprint", "host", "interval",
879
"last_approval_request", "last_checked_ok",
880
"last_enabled", "name", "timeout")
881
client_defaults = {
882
"timeout": "PT5M",
883
"extended_timeout": "PT15M",
884
"interval": "PT2M",
885
"checker": "fping -q -- %%(host)s",
886
"host": "",
887
"approval_delay": "PT0S",
888
"approval_duration": "PT1S",
889
"approved_by_default": "True",
890
"enabled": "True",
891
}
892
265
893
266
@staticmethod
894
def config_parser(config):
895
"""Construct a new dict of client settings of this form:
896
{ client_name: {setting_name: value, ...}, ...}
897
with exceptions for any special settings as defined above.
898
NOTE: Must be a pure function. Must return the same result
899
value given the same arguments.
900
"""
901
settings = {}
902
for client_name in config.sections():
903
section = dict(config.items(client_name))
904
client = settings[client_name] = {}
905
906
client["host"] = section["host"]
907
# Reformat values from string types to Python types
908
client["approved_by_default"] = config.getboolean(
909
client_name, "approved_by_default")
910
client["enabled"] = config.getboolean(client_name,
911
"enabled")
912
913
# Uppercase and remove spaces from key_id and fingerprint
914
# for later comparison purposes with return value from the
915
# key_id() and fingerprint() functions
916
client["key_id"] = (section.get("key_id", "").upper()
917
.replace(" ", ""))
918
client["fingerprint"] = (section["fingerprint"].upper()
919
.replace(" ", ""))
920
if "secret" in section:
921
client["secret"] = codecs.decode(section["secret"]
922
.encode("utf-8"),
923
"base64")
924
elif "secfile" in section:
925
with open(os.path.expanduser(os.path.expandvars
926
(section["secfile"])),
927
"rb") as secfile:
928
client["secret"] = secfile.read()
929
else:
930
raise TypeError("No secret or secfile for section {}"
931
.format(section))
932
client["timeout"] = string_to_delta(section["timeout"])
933
client["extended_timeout"] = string_to_delta(
934
section["extended_timeout"])
935
client["interval"] = string_to_delta(section["interval"])
936
client["approval_delay"] = string_to_delta(
937
section["approval_delay"])
938
client["approval_duration"] = string_to_delta(
939
section["approval_duration"])
940
client["checker_command"] = section["checker"]
941
client["last_approval_request"] = None
942
client["last_checked_ok"] = None
943
client["last_checker_status"] = -2
944
945
return settings
946
947
def __init__(self, settings, name=None, server_settings=None):
267
def _timedelta_to_milliseconds(td):
268
"Convert a datetime.timedelta() to milliseconds"
269
return ((td.days * 24 * 60 * 60 * 1000)
270
+ (td.seconds * 1000)
271
+ (td.microseconds // 1000))
272
273
def timeout_milliseconds(self):
274
"Return the 'timeout' attribute in milliseconds"
275
return self._timedelta_to_milliseconds(self.timeout)
276
277
def interval_milliseconds(self):
278
"Return the 'interval' attribute in milliseconds"
279
return self._timedelta_to_milliseconds(self.interval)
280
281
def approved_delay_milliseconds(self):
282
return self._timedelta_to_milliseconds(self.approved_delay)
283
284
def __init__(self, name = None, disable_hook=None, config=None):
285
"""Note: the 'checker' key in 'config' sets the
286
'checker_command' attribute and *not* the 'checker'
287
attribute."""
948
288
self.name = name
949
if server_settings is None:
950
server_settings = {}
951
self.server_settings = server_settings
952
# adding all client settings
953
for setting, value in settings.items():
954
setattr(self, setting, value)
955
956
if self.enabled:
957
if not hasattr(self, "last_enabled"):
958
self.last_enabled = datetime.datetime.utcnow()
959
if not hasattr(self, "expires"):
960
self.expires = (datetime.datetime.utcnow()
961
+ self.timeout)
289
if config is None:
290
config = {}
291
logger.debug(u"Creating client %r", self.name)
292
# Uppercase and remove spaces from fingerprint for later
293
# comparison purposes with return value from the fingerprint()
294
# function
295
self.fingerprint = (config[u"fingerprint"].upper()
296
.replace(u" ", u""))
297
logger.debug(u" Fingerprint: %s", self.fingerprint)
298
if u"secret" in config:
299
self.secret = config[u"secret"].decode(u"base64")
300
elif u"secfile" in config:
301
with open(os.path.expanduser(os.path.expandvars
302
(config[u"secfile"])),
303
"rb") as secfile:
304
self.secret = secfile.read()
962
305
else:
963
self.last_enabled = None
964
self.expires = None
965
966
logger.debug("Creating client %r", self.name)
967
logger.debug(" Key ID: %s", self.key_id)
968
logger.debug(" Fingerprint: %s", self.fingerprint)
969
self.created = settings.get("created",
970
datetime.datetime.utcnow())
971
972
# attributes specific for this server instance
306
#XXX Need to allow secret on demand!
307
raise TypeError(u"No secret or secfile for client %s"
308
% self.name)
309
self.host = config.get(u"host", u"")
310
self.created = datetime.datetime.utcnow()
311
self.enabled = False
312
self.last_enabled = None
313
self.last_checked_ok = None
314
self.timeout = string_to_delta(config[u"timeout"])
315
self.interval = string_to_delta(config[u"interval"])
316
self.disable_hook = disable_hook
973
317
self.checker = None
974
318
self.checker_initiator_tag = None
975
319
self.disable_initiator_tag = None
976
320
self.checker_callback_tag = None
321
self.checker_command = config[u"checker"]
977
322
self.current_checker_command = None
978
self.approved = None
323
self.last_connect = None
979
324
self.approvals_pending = 0
980
self.changedstate = multiprocessing_manager.Condition(
981
multiprocessing_manager.Lock())
982
self.client_structure = [attr
983
for attr in self.__dict__.keys()
984
if not attr.startswith("_")]
985
self.client_structure.append("client_structure")
986
987
for name, t in inspect.getmembers(
988
type(self), lambda obj: isinstance(obj, property)):
989
if not name.startswith("_"):
990
self.client_structure.append(name)
991
992
# Send notice to process children that client state has changed
325
self._approved = None
326
self.approved_by_default = config.get(u"approved_by_default",
327
False)
328
self.approved_delay = string_to_delta(
329
config[u"approved_delay"])
330
self.approved_duration = string_to_delta(
331
config[u"approved_duration"])
332
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
333
993
334
def send_changedstate(self):
994
with self.changedstate:
995
self.changedstate.notify_all()
996
335
self.changedstate.acquire()
336
self.changedstate.notify_all()
337
self.changedstate.release()
338
997
339
def enable(self):
998
340
"""Start this client's checker and timeout hooks"""
999
if getattr(self, "enabled", False):
341
if getattr(self, u"enabled", False):
1000
342
# Already enabled
1001
343
return
1002
self.expires = datetime.datetime.utcnow() + self.timeout
1003
self.enabled = True
344
self.send_changedstate()
1004
345
self.last_enabled = datetime.datetime.utcnow()
1005
self.init_checker()
1006
self.send_changedstate()
1007
346
# Schedule a new checker to be started an 'interval' from now,
347
# and every interval from then on.
348
self.checker_initiator_tag = (gobject.timeout_add
349
(self.interval_milliseconds(),
350
self.start_checker))
351
# Schedule a disable() when 'timeout' has passed
352
self.disable_initiator_tag = (gobject.timeout_add
353
(self.timeout_milliseconds(),
354
self.disable))
355
self.enabled = True
356
# Also start a new checker *right now*.
357
self.start_checker()
358
1008
359
def disable(self, quiet=True):
1009
360
"""Disable this client."""
1010
361
if not getattr(self, "enabled", False):
1011
362
return False
1012
363
if not quiet:
1013
logger.info("Disabling client %s", self.name)
1014
if getattr(self, "disable_initiator_tag", None) is not None:
1015
GLib.source_remove(self.disable_initiator_tag)
364
self.send_changedstate()
365
if not quiet:
366
logger.info(u"Disabling client %s", self.name)
367
if getattr(self, u"disable_initiator_tag", False):
368
gobject.source_remove(self.disable_initiator_tag)
1016
369
self.disable_initiator_tag = None
1017
self.expires = None
1018
if getattr(self, "checker_initiator_tag", None) is not None:
1019
GLib.source_remove(self.checker_initiator_tag)
370
if getattr(self, u"checker_initiator_tag", False):
371
gobject.source_remove(self.checker_initiator_tag)
1020
372
self.checker_initiator_tag = None
1021
373
self.stop_checker()
374
if self.disable_hook:
375
self.disable_hook(self)
1022
376
self.enabled = False
1023
if not quiet:
1024
self.send_changedstate()
1025
# Do not run this again if called by a GLib.timeout_add
377
# Do not run this again if called by a gobject.timeout_add
1026
378
return False
1027
379
1028
380
def __del__(self):
381
self.disable_hook = None
1029
382
self.disable()
1030
1031
def init_checker(self):
1032
# Schedule a new checker to be started an 'interval' from now,
1033
# and every interval from then on.
1034
if self.checker_initiator_tag is not None:
1035
GLib.source_remove(self.checker_initiator_tag)
1036
self.checker_initiator_tag = GLib.timeout_add(
1037
int(self.interval.total_seconds() * 1000),
1038
self.start_checker)
1039
# Schedule a disable() when 'timeout' has passed
1040
if self.disable_initiator_tag is not None:
1041
GLib.source_remove(self.disable_initiator_tag)
1042
self.disable_initiator_tag = GLib.timeout_add(
1043
int(self.timeout.total_seconds() * 1000), self.disable)
1044
# Also start a new checker *right now*.
1045
self.start_checker()
1046
1047
def checker_callback(self, source, condition, connection,
1048
command):
383
384
def checker_callback(self, pid, condition, command):
1049
385
"""The checker has completed, so take appropriate actions."""
1050
386
self.checker_callback_tag = None
1051
387
self.checker = None
1052
# Read return code from connection (see call_pipe)
1053
returncode = connection.recv()
1054
connection.close()
1055
1056
if returncode >= 0:
1057
self.last_checker_status = returncode
1058
self.last_checker_signal = None
1059
if self.last_checker_status == 0:
1060
logger.info("Checker for %(name)s succeeded",
388
if os.WIFEXITED(condition):
389
exitstatus = os.WEXITSTATUS(condition)
390
if exitstatus == 0:
391
logger.info(u"Checker for %(name)s succeeded",
1061
392
vars(self))
1062
393
self.checked_ok()
1063
394
else:
1064
logger.info("Checker for %(name)s failed", vars(self))
395
logger.info(u"Checker for %(name)s failed",
396
vars(self))
1065
397
else:
1066
self.last_checker_status = -1
1067
self.last_checker_signal = -returncode
1068
logger.warning("Checker for %(name)s crashed?",
398
logger.warning(u"Checker for %(name)s crashed?",
1069
399
vars(self))
1070
return False
1071
400
1072
401
def checked_ok(self):
1073
"""Assert that the client has been seen, alive and well."""
402
"""Bump up the timeout for this client.
403
404
This should only be called when the client has been seen,
405
alive and well.
406
"""
1074
407
self.last_checked_ok = datetime.datetime.utcnow()
1075
self.last_checker_status = 0
1076
self.last_checker_signal = None
1077
self.bump_timeout()
1078
1079
def bump_timeout(self, timeout=None):
1080
"""Bump up the timeout for this client."""
1081
if timeout is None:
1082
timeout = self.timeout
1083
if self.disable_initiator_tag is not None:
1084
GLib.source_remove(self.disable_initiator_tag)
1085
self.disable_initiator_tag = None
1086
if getattr(self, "enabled", False):
1087
self.disable_initiator_tag = GLib.timeout_add(
1088
int(timeout.total_seconds() * 1000), self.disable)
1089
self.expires = datetime.datetime.utcnow() + timeout
1090
1091
def need_approval(self):
1092
self.last_approval_request = datetime.datetime.utcnow()
1093
408
gobject.source_remove(self.disable_initiator_tag)
409
self.disable_initiator_tag = (gobject.timeout_add
410
(self.timeout_milliseconds(),
411
self.disable))
412
1094
413
def start_checker(self):
1095
414
"""Start a new checker subprocess if one is not running.
1096
415
1097
416
If a checker already exists, leave it running and do
1098
417
nothing."""
1099
418
# The reason for not killing a running checker is that if we
1100
# did that, and if a checker (for some reason) started running
1101
# slowly and taking more than 'interval' time, then the client
1102
# would inevitably timeout, since no checker would get a
1103
# chance to run to completion. If we instead leave running
419
# did that, then if a checker (for some reason) started
420
# running slowly and taking more than 'interval' time, the
421
# client would inevitably timeout, since no checker would get
422
# a chance to run to completion. If we instead leave running
1104
423
# checkers alone, the checker would have to take more time
1105
424
# than 'timeout' for the client to be disabled, which is as it
1106
425
# should be.
1107
1108
if self.checker is not None and not self.checker.is_alive():
1109
logger.warning("Checker was not alive; joining")
1110
self.checker.join()
1111
self.checker = None
426
427
# If a checker exists, make sure it is not a zombie
428
try:
429
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
430
except (AttributeError, OSError), error:
431
if (isinstance(error, OSError)
432
and error.errno != errno.ECHILD):
433
raise error
434
else:
435
if pid:
436
logger.warning(u"Checker was a zombie")
437
gobject.source_remove(self.checker_callback_tag)
438
self.checker_callback(pid, status,
439
self.current_checker_command)
1112
440
# Start a new checker if needed
1113
441
if self.checker is None:
1114
# Escape attributes for the shell
1115
escaped_attrs = {
1116
attr: re.escape(str(getattr(self, attr)))
1117
for attr in self.runtime_expansions}
1118
442
try:
1119
command = self.checker_command % escaped_attrs
1120
except TypeError as error:
1121
logger.error('Could not format string "%s"',
1122
self.checker_command,
1123
exc_info=error)
1124
return True # Try again later
443
# In case checker_command has exactly one % operator
444
command = self.checker_command % self.host
445
except TypeError:
446
# Escape attributes for the shell
447
escaped_attrs = dict((key,
448
re.escape(unicode(str(val),
449
errors=
450
u'replace')))
451
for key, val in
452
vars(self).iteritems())
453
try:
454
command = self.checker_command % escaped_attrs
455
except TypeError, error:
456
logger.error(u'Could not format string "%s":'
457
u' %s', self.checker_command, error)
458
return True # Try again later
1125
459
self.current_checker_command = command
1126
logger.info("Starting checker %r for %s", command,
1127
self.name)
1128
# We don't need to redirect stdout and stderr, since
1129
# in normal mode, that is already done by daemon(),
1130
# and in debug mode we don't want to. (Stdin is
1131
# always replaced by /dev/null.)
1132
# The exception is when not debugging but nevertheless
1133
# running in the foreground; use the previously
1134
# created wnull.
1135
popen_args = {"close_fds": True,
1136
"shell": True,
1137
"cwd": "/"}
1138
if (not self.server_settings["debug"]
1139
and self.server_settings["foreground"]):
1140
popen_args.update({"stdout": wnull,
1141
"stderr": wnull})
1142
pipe = multiprocessing.Pipe(duplex=False)
1143
self.checker = multiprocessing.Process(
1144
target=call_pipe,
1145
args=(pipe[1], subprocess.call, command),
1146
kwargs=popen_args)
1147
self.checker.start()
1148
self.checker_callback_tag = GLib.io_add_watch(
1149
pipe[0].fileno(), GLib.IO_IN,
1150
self.checker_callback, pipe[0], command)
1151
# Re-run this periodically if run by GLib.timeout_add
460
try:
461
logger.info(u"Starting checker %r for %s",
462
command, self.name)
463
# We don't need to redirect stdout and stderr, since
464
# in normal mode, that is already done by daemon(),
465
# and in debug mode we don't want to. (Stdin is
466
# always replaced by /dev/null.)
467
self.checker = subprocess.Popen(command,
468
close_fds=True,
469
shell=True, cwd=u"/")
470
self.checker_callback_tag = (gobject.child_watch_add
471
(self.checker.pid,
472
self.checker_callback,
473
data=command))
474
# The checker may have completed before the gobject
475
# watch was added. Check for this.
476
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
477
if pid:
478
gobject.source_remove(self.checker_callback_tag)
479
self.checker_callback(pid, status, command)
480
except OSError, error:
481
logger.error(u"Failed to start subprocess: %s",
482
error)
483
# Re-run this periodically if run by gobject.timeout_add
1152
484
return True
1153
485
1154
486
def stop_checker(self):
1155
487
"""Force the checker process, if any, to stop."""
1156
488
if self.checker_callback_tag:
1157
GLib.source_remove(self.checker_callback_tag)
489
gobject.source_remove(self.checker_callback_tag)
1158
490
self.checker_callback_tag = None
1159
if getattr(self, "checker", None) is None:
491
if getattr(self, u"checker", None) is None:
1160
492
return
1161
logger.debug("Stopping checker for %(name)s", vars(self))
1162
self.checker.terminate()
493
logger.debug(u"Stopping checker for %(name)s", vars(self))
494
try:
495
os.kill(self.checker.pid, signal.SIGTERM)
496
#time.sleep(0.5)
497
#if self.checker.poll() is None:
498
# os.kill(self.checker.pid, signal.SIGKILL)
499
except OSError, error:
500
if error.errno != errno.ESRCH: # No such process
501
raise
1163
502
self.checker = None
1164
503
1165
1166
def dbus_service_property(dbus_interface,
1167
signature="v",
1168
access="readwrite",
1169
byte_arrays=False):
504
def dbus_service_property(dbus_interface, signature=u"v",
505
access=u"readwrite", byte_arrays=False):
1170
506
"""Decorators for marking methods of a DBusObjectWithProperties to
1171
507
become properties on the D-Bus.
1172
508
1173
509
The decorated method will be called with no arguments by "Get"
1174
510
and with one argument by "Set".
1175
511
1176
512
The parameters, where they are supported, are the same as
1177
513
dbus.service.method, except there is only "signature", since the
1178
514
type from Get() and the type sent to Set() is the same.
1179
515
"""
1180
516
# Encoding deeply encoded byte arrays is not supported yet by the
1181
517
# "Set" method, so we fail early here:
1182
if byte_arrays and signature != "ay":
1183
raise ValueError("Byte arrays not supported for non-'ay'"
1184
" signature {!r}".format(signature))
1185
518
if byte_arrays and signature != u"ay":
519
raise ValueError(u"Byte arrays not supported for non-'ay'"
520
u" signature %r" % signature)
1186
521
def decorator(func):
1187
522
func._dbus_is_property = True
1188
523
func._dbus_interface = dbus_interface
1189
524
func._dbus_signature = signature
1190
525
func._dbus_access = access
1191
526
func._dbus_name = func.__name__
1192
if func._dbus_name.endswith("_dbus_property"):
527
if func._dbus_name.endswith(u"_dbus_property"):
1193
528
func._dbus_name = func._dbus_name[:-14]
1194
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1195
return func
1196
1197
return decorator
1198
1199
1200
def dbus_interface_annotations(dbus_interface):
1201
"""Decorator for marking functions returning interface annotations
1202
1203
Usage:
1204
1205
@dbus_interface_annotations("org.example.Interface")
1206
def _foo(self): # Function name does not matter
1207
return {"org.freedesktop.DBus.Deprecated": "true",
1208
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1209
"false"}
1210
"""
1211
1212
def decorator(func):
1213
func._dbus_is_interface = True
1214
func._dbus_interface = dbus_interface
1215
func._dbus_name = dbus_interface
1216
return func
1217
1218
return decorator
1219
1220
1221
def dbus_annotations(annotations):
1222
"""Decorator to annotate D-Bus methods, signals or properties
1223
Usage:
1224
1225
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1226
"org.freedesktop.DBus.Property."
1227
"EmitsChangedSignal": "false"})
1228
@dbus_service_property("org.example.Interface", signature="b",
1229
access="r")
1230
def Property_dbus_property(self):
1231
return dbus.Boolean(False)
1232
1233
See also the DBusObjectWithAnnotations class.
1234
"""
1235
1236
def decorator(func):
1237
func._dbus_annotations = annotations
1238
return func
1239
529
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
530
return func
1240
531
return decorator
1241
532
1242
533
1243
534
class DBusPropertyException(dbus.exceptions.DBusException):
1244
535
"""A base class for D-Bus property-related exceptions
1245
536
"""
1246
pass
537
def __unicode__(self):
538
return unicode(str(self))
1247
539
1248
540
1249
541
class DBusPropertyAccessException(DBusPropertyException):
1258
550
pass
1259
551
1260
552
1261
class DBusObjectWithAnnotations(dbus.service.Object):
1262
"""A D-Bus object with annotations.
1263
1264
Classes inheriting from this can use the dbus_annotations
1265
decorator to add annotations to methods or signals.
1266
"""
1267
1268
@staticmethod
1269
def _is_dbus_thing(thing):
1270
"""Returns a function testing if an attribute is a D-Bus thing
1271
1272
If called like _is_dbus_thing("method") it returns a function
1273
suitable for use as predicate to inspect.getmembers().
1274
"""
1275
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1276
False)
1277
1278
def _get_all_dbus_things(self, thing):
1279
"""Returns a generator of (name, attribute) pairs
1280
"""
1281
return ((getattr(athing.__get__(self), "_dbus_name", name),
1282
athing.__get__(self))
1283
for cls in self.__class__.__mro__
1284
for name, athing in
1285
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1286
1287
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1288
out_signature="s",
1289
path_keyword='object_path',
1290
connection_keyword='connection')
1291
def Introspect(self, object_path, connection):
1292
"""Overloading of standard D-Bus method.
1293
1294
Inserts annotation tags on methods and signals.
1295
"""
1296
xmlstring = dbus.service.Object.Introspect(self, object_path,
1297
connection)
1298
try:
1299
document = xml.dom.minidom.parseString(xmlstring)
1300
1301
for if_tag in document.getElementsByTagName("interface"):
1302
# Add annotation tags
1303
for typ in ("method", "signal"):
1304
for tag in if_tag.getElementsByTagName(typ):
1305
annots = dict()
1306
for name, prop in (self.
1307
_get_all_dbus_things(typ)):
1308
if (name == tag.getAttribute("name")
1309
and prop._dbus_interface
1310
== if_tag.getAttribute("name")):
1311
annots.update(getattr(
1312
prop, "_dbus_annotations", {}))
1313
for name, value in annots.items():
1314
ann_tag = document.createElement(
1315
"annotation")
1316
ann_tag.setAttribute("name", name)
1317
ann_tag.setAttribute("value", value)
1318
tag.appendChild(ann_tag)
1319
# Add interface annotation tags
1320
for annotation, value in dict(
1321
itertools.chain.from_iterable(
1322
annotations().items()
1323
for name, annotations
1324
in self._get_all_dbus_things("interface")
1325
if name == if_tag.getAttribute("name")
1326
)).items():
1327
ann_tag = document.createElement("annotation")
1328
ann_tag.setAttribute("name", annotation)
1329
ann_tag.setAttribute("value", value)
1330
if_tag.appendChild(ann_tag)
1331
# Fix argument name for the Introspect method itself
1332
if (if_tag.getAttribute("name")
1333
== dbus.INTROSPECTABLE_IFACE):
1334
for cn in if_tag.getElementsByTagName("method"):
1335
if cn.getAttribute("name") == "Introspect":
1336
for arg in cn.getElementsByTagName("arg"):
1337
if (arg.getAttribute("direction")
1338
== "out"):
1339
arg.setAttribute("name",
1340
"xml_data")
1341
xmlstring = document.toxml("utf-8")
1342
document.unlink()
1343
except (AttributeError, xml.dom.DOMException,
1344
xml.parsers.expat.ExpatError) as error:
1345
logger.error("Failed to override Introspection method",
1346
exc_info=error)
1347
return xmlstring
1348
1349
1350
class DBusObjectWithProperties(DBusObjectWithAnnotations):
553
class DBusObjectWithProperties(dbus.service.Object):
1351
554
"""A D-Bus object with properties.
1352
555
1353
556
Classes inheriting from this can use the dbus_service_property
1354
557
decorator to expose methods as D-Bus properties. It exposes the
1355
558
standard Get(), Set(), and GetAll() methods on the D-Bus.
1356
559
"""
1357
560
561
@staticmethod
562
def _is_dbus_property(obj):
563
return getattr(obj, u"_dbus_is_property", False)
564
565
def _get_all_dbus_properties(self):
566
"""Returns a generator of (name, attribute) pairs
567
"""
568
return ((prop._dbus_name, prop)
569
for name, prop in
570
inspect.getmembers(self, self._is_dbus_property))
571
1358
572
def _get_dbus_property(self, interface_name, property_name):
1359
573
"""Returns a bound method if one exists which is a D-Bus
1360
574
property with the specified name and interface.
1361
575
"""
1362
for cls in self.__class__.__mro__:
1363
for name, value in inspect.getmembers(
1364
cls, self._is_dbus_thing("property")):
1365
if (value._dbus_name == property_name
1366
and value._dbus_interface == interface_name):
1367
return value.__get__(self)
1368
576
for name in (property_name,
577
property_name + u"_dbus_property"):
578
prop = getattr(self, name, None)
579
if (prop is None
580
or not self._is_dbus_property(prop)
581
or prop._dbus_name != property_name
582
or (interface_name and prop._dbus_interface
583
and interface_name != prop._dbus_interface)):
584
continue
585
return prop
1369
586
# No such property
1370
raise DBusPropertyNotFound("{}:{}.{}".format(
1371
self.dbus_object_path, interface_name, property_name))
1372
1373
@classmethod
1374
def _get_all_interface_names(cls):
1375
"""Get a sequence of all interfaces supported by an object"""
1376
return (name for name in set(getattr(getattr(x, attr),
1377
"_dbus_interface", None)
1378
for x in (inspect.getmro(cls))
1379
for attr in dir(x))
1380
if name is not None)
1381
1382
@dbus.service.method(dbus.PROPERTIES_IFACE,
1383
in_signature="ss",
1384
out_signature="v")
587
raise DBusPropertyNotFound(self.dbus_object_path + u":"
588
+ interface_name + u"."
589
+ property_name)
590
591
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
592
out_signature=u"v")
1385
593
def Get(self, interface_name, property_name):
1386
594
"""Standard D-Bus property Get() method, see D-Bus standard.
1387
595
"""
1388
596
prop = self._get_dbus_property(interface_name, property_name)
1389
if prop._dbus_access == "write":
597
if prop._dbus_access == u"write":
1390
598
raise DBusPropertyAccessException(property_name)
1391
599
value = prop()
1392
if not hasattr(value, "variant_level"):
600
if not hasattr(value, u"variant_level"):
1393
601
return value
1394
602
return type(value)(value, variant_level=value.variant_level+1)
1395
1396
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
603
604
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1397
605
def Set(self, interface_name, property_name, value):
1398
606
"""Standard D-Bus property Set() method, see D-Bus standard.
1399
607
"""
1400
608
prop = self._get_dbus_property(interface_name, property_name)
1401
if prop._dbus_access == "read":
609
if prop._dbus_access == u"read":
1402
610
raise DBusPropertyAccessException(property_name)
1403
if prop._dbus_get_args_options["byte_arrays"]:
611
if prop._dbus_get_args_options[u"byte_arrays"]:
1404
612
# The byte_arrays option is not supported yet on
1405
613
# signatures other than "ay".
1406
if prop._dbus_signature != "ay":
1407
raise ValueError("Byte arrays not supported for non-"
1408
"'ay' signature {!r}"
1409
.format(prop._dbus_signature))
1410
value = dbus.ByteArray(b''.join(chr(byte)
1411
for byte in value))
614
if prop._dbus_signature != u"ay":
615
raise ValueError
616
value = dbus.ByteArray(''.join(unichr(byte)
617
for byte in value))
1412
618
prop(value)
1413
1414
@dbus.service.method(dbus.PROPERTIES_IFACE,
1415
in_signature="s",
1416
out_signature="a{sv}")
619
620
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
621
out_signature=u"a{sv}")
1417
622
def GetAll(self, interface_name):
1418
623
"""Standard D-Bus property GetAll() method, see D-Bus
1419
624
standard.
1420
625
1421
626
Note: Will not include properties with access="write".
1422
627
"""
1423
properties = {}
1424
for name, prop in self._get_all_dbus_things("property"):
628
all = {}
629
for name, prop in self._get_all_dbus_properties():
1425
630
if (interface_name
1426
631
and interface_name != prop._dbus_interface):
1427
632
# Interface non-empty but did not match
1428
633
continue
1429
634
# Ignore write-only properties
1430
if prop._dbus_access == "write":
635
if prop._dbus_access == u"write":
1431
636
continue
1432
637
value = prop()
1433
if not hasattr(value, "variant_level"):
1434
properties[name] = value
638
if not hasattr(value, u"variant_level"):
639
all[name] = value
1435
640
continue
1436
properties[name] = type(value)(
1437
value, variant_level=value.variant_level + 1)
1438
return dbus.Dictionary(properties, signature="sv")
1439
1440
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1441
def PropertiesChanged(self, interface_name, changed_properties,
1442
invalidated_properties):
1443
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1444
standard.
1445
"""
1446
pass
1447
641
all[name] = type(value)(value, variant_level=
642
value.variant_level+1)
643
return dbus.Dictionary(all, signature=u"sv")
644
1448
645
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1449
out_signature="s",
646
out_signature=u"s",
1450
647
path_keyword='object_path',
1451
648
connection_keyword='connection')
1452
649
def Introspect(self, object_path, connection):
1453
"""Overloading of standard D-Bus method.
1454
1455
Inserts property tags and interface annotation tags.
650
"""Standard D-Bus method, overloaded to insert property tags.
1456
651
"""
1457
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1458
object_path,
1459
connection)
652
xmlstring = dbus.service.Object.Introspect(self, object_path,
653
connection)
1460
654
try:
1461
655
document = xml.dom.minidom.parseString(xmlstring)
1462
1463
656
def make_tag(document, name, prop):
1464
e = document.createElement("property")
1465
e.setAttribute("name", name)
1466
e.setAttribute("type", prop._dbus_signature)
1467
e.setAttribute("access", prop._dbus_access)
657
e = document.createElement(u"property")
658
e.setAttribute(u"name", name)
659
e.setAttribute(u"type", prop._dbus_signature)
660
e.setAttribute(u"access", prop._dbus_access)
1468
661
return e
1469
1470
for if_tag in document.getElementsByTagName("interface"):
1471
# Add property tags
662
for if_tag in document.getElementsByTagName(u"interface"):
1472
663
for tag in (make_tag(document, name, prop)
1473
664
for name, prop
1474
in self._get_all_dbus_things("property")
665
in self._get_all_dbus_properties()
1475
666
if prop._dbus_interface
1476
== if_tag.getAttribute("name")):
667
== if_tag.getAttribute(u"name")):
1477
668
if_tag.appendChild(tag)
1478
# Add annotation tags for properties
1479
for tag in if_tag.getElementsByTagName("property"):
1480
annots = dict()
1481
for name, prop in self._get_all_dbus_things(
1482
"property"):
1483
if (name == tag.getAttribute("name")
1484
and prop._dbus_interface
1485
== if_tag.getAttribute("name")):
1486
annots.update(getattr(
1487
prop, "_dbus_annotations", {}))
1488
for name, value in annots.items():
1489
ann_tag = document.createElement(
1490
"annotation")
1491
ann_tag.setAttribute("name", name)
1492
ann_tag.setAttribute("value", value)
1493
tag.appendChild(ann_tag)
1494
669
# Add the names to the return values for the
1495
670
# "org.freedesktop.DBus.Properties" methods
1496
if (if_tag.getAttribute("name")
1497
== "org.freedesktop.DBus.Properties"):
1498
for cn in if_tag.getElementsByTagName("method"):
1499
if cn.getAttribute("name") == "Get":
1500
for arg in cn.getElementsByTagName("arg"):
1501
if (arg.getAttribute("direction")
1502
== "out"):
1503
arg.setAttribute("name", "value")
1504
elif cn.getAttribute("name") == "GetAll":
1505
for arg in cn.getElementsByTagName("arg"):
1506
if (arg.getAttribute("direction")
1507
== "out"):
1508
arg.setAttribute("name", "props")
1509
xmlstring = document.toxml("utf-8")
1510
document.unlink()
1511
except (AttributeError, xml.dom.DOMException,
1512
xml.parsers.expat.ExpatError) as error:
1513
logger.error("Failed to override Introspection method",
1514
exc_info=error)
1515
return xmlstring
1516
1517
1518
try:
1519
dbus.OBJECT_MANAGER_IFACE
1520
except AttributeError:
1521
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1522
1523
1524
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1525
"""A D-Bus object with an ObjectManager.
1526
1527
Classes inheriting from this exposes the standard
1528
GetManagedObjects call and the InterfacesAdded and
1529
InterfacesRemoved signals on the standard
1530
"org.freedesktop.DBus.ObjectManager" interface.
1531
1532
Note: No signals are sent automatically; they must be sent
1533
manually.
1534
"""
1535
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1536
out_signature="a{oa{sa{sv}}}")
1537
def GetManagedObjects(self):
1538
"""This function must be overridden"""
1539
raise NotImplementedError()
1540
1541
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1542
signature="oa{sa{sv}}")
1543
def InterfacesAdded(self, object_path, interfaces_and_properties):
1544
pass
1545
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1547
def InterfacesRemoved(self, object_path, interfaces):
1548
pass
1549
1550
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1551
out_signature="s",
1552
path_keyword='object_path',
1553
connection_keyword='connection')
1554
def Introspect(self, object_path, connection):
1555
"""Overloading of standard D-Bus method.
1556
1557
Override return argument name of GetManagedObjects to be
1558
"objpath_interfaces_and_properties"
1559
"""
1560
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1561
object_path,
1562
connection)
1563
try:
1564
document = xml.dom.minidom.parseString(xmlstring)
1565
1566
for if_tag in document.getElementsByTagName("interface"):
1567
# Fix argument name for the GetManagedObjects method
1568
if (if_tag.getAttribute("name")
1569
== dbus.OBJECT_MANAGER_IFACE):
1570
for cn in if_tag.getElementsByTagName("method"):
1571
if (cn.getAttribute("name")
1572
== "GetManagedObjects"):
1573
for arg in cn.getElementsByTagName("arg"):
1574
if (arg.getAttribute("direction")
1575
== "out"):
1576
arg.setAttribute(
1577
"name",
1578
"objpath_interfaces"
1579
"_and_properties")
1580
xmlstring = document.toxml("utf-8")
1581
document.unlink()
1582
except (AttributeError, xml.dom.DOMException,
1583
xml.parsers.expat.ExpatError) as error:
1584
logger.error("Failed to override Introspection method",
1585
exc_info=error)
1586
return xmlstring
1587
1588
1589
def datetime_to_dbus(dt, variant_level=0):
1590
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1591
if dt is None:
1592
return dbus.String("", variant_level=variant_level)
1593
return dbus.String(dt.isoformat(), variant_level=variant_level)
1594
1595
1596
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1597
"""A class decorator; applied to a subclass of
1598
dbus.service.Object, it will add alternate D-Bus attributes with
1599
interface names according to the "alt_interface_names" mapping.
1600
Usage:
1601
1602
@alternate_dbus_interfaces({"org.example.Interface":
1603
"net.example.AlternateInterface"})
1604
class SampleDBusObject(dbus.service.Object):
1605
@dbus.service.method("org.example.Interface")
1606
def SampleDBusMethod():
1607
pass
1608
1609
The above "SampleDBusMethod" on "SampleDBusObject" will be
1610
reachable via two interfaces: "org.example.Interface" and
1611
"net.example.AlternateInterface", the latter of which will have
1612
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1613
"true", unless "deprecate" is passed with a False value.
1614
1615
This works for methods and signals, and also for D-Bus properties
1616
(from DBusObjectWithProperties) and interfaces (from the
1617
dbus_interface_annotations decorator).
1618
"""
1619
1620
def wrapper(cls):
1621
for orig_interface_name, alt_interface_name in (
1622
alt_interface_names.items()):
1623
attr = {}
1624
interface_names = set()
1625
# Go though all attributes of the class
1626
for attrname, attribute in inspect.getmembers(cls):
1627
# Ignore non-D-Bus attributes, and D-Bus attributes
1628
# with the wrong interface name
1629
if (not hasattr(attribute, "_dbus_interface")
1630
or not attribute._dbus_interface.startswith(
1631
orig_interface_name)):
1632
continue
1633
# Create an alternate D-Bus interface name based on
1634
# the current name
1635
alt_interface = attribute._dbus_interface.replace(
1636
orig_interface_name, alt_interface_name)
1637
interface_names.add(alt_interface)
1638
# Is this a D-Bus signal?
1639
if getattr(attribute, "_dbus_is_signal", False):
1640
# Extract the original non-method undecorated
1641
# function by black magic
1642
if sys.version_info.major == 2:
1643
nonmethod_func = (dict(
1644
zip(attribute.func_code.co_freevars,
1645
attribute.__closure__))
1646
["func"].cell_contents)
1647
else:
1648
nonmethod_func = (dict(
1649
zip(attribute.__code__.co_freevars,
1650
attribute.__closure__))
1651
["func"].cell_contents)
1652
# Create a new, but exactly alike, function
1653
# object, and decorate it to be a new D-Bus signal
1654
# with the alternate D-Bus interface name
1655
new_function = copy_function(nonmethod_func)
1656
new_function = (dbus.service.signal(
1657
alt_interface,
1658
attribute._dbus_signature)(new_function))
1659
# Copy annotations, if any
1660
try:
1661
new_function._dbus_annotations = dict(
1662
attribute._dbus_annotations)
1663
except AttributeError:
1664
pass
1665
1666
# Define a creator of a function to call both the
1667
# original and alternate functions, so both the
1668
# original and alternate signals gets sent when
1669
# the function is called
1670
def fixscope(func1, func2):
1671
"""This function is a scope container to pass
1672
func1 and func2 to the "call_both" function
1673
outside of its arguments"""
1674
1675
@functools.wraps(func2)
1676
def call_both(*args, **kwargs):
1677
"""This function will emit two D-Bus
1678
signals by calling func1 and func2"""
1679
func1(*args, **kwargs)
1680
func2(*args, **kwargs)
1681
# Make wrapper function look like a D-Bus
1682
# signal
1683
for name, attr in inspect.getmembers(func2):
1684
if name.startswith("_dbus_"):
1685
setattr(call_both, name, attr)
1686
1687
return call_both
1688
# Create the "call_both" function and add it to
1689
# the class
1690
attr[attrname] = fixscope(attribute, new_function)
1691
# Is this a D-Bus method?
1692
elif getattr(attribute, "_dbus_is_method", False):
1693
# Create a new, but exactly alike, function
1694
# object. Decorate it to be a new D-Bus method
1695
# with the alternate D-Bus interface name. Add it
1696
# to the class.
1697
attr[attrname] = (
1698
dbus.service.method(
1699
alt_interface,
1700
attribute._dbus_in_signature,
1701
attribute._dbus_out_signature)
1702
(copy_function(attribute)))
1703
# Copy annotations, if any
1704
try:
1705
attr[attrname]._dbus_annotations = dict(
1706
attribute._dbus_annotations)
1707
except AttributeError:
1708
pass
1709
# Is this a D-Bus property?
1710
elif getattr(attribute, "_dbus_is_property", False):
1711
# Create a new, but exactly alike, function
1712
# object, and decorate it to be a new D-Bus
1713
# property with the alternate D-Bus interface
1714
# name. Add it to the class.
1715
attr[attrname] = (dbus_service_property(
1716
alt_interface, attribute._dbus_signature,
1717
attribute._dbus_access,
1718
attribute._dbus_get_args_options
1719
["byte_arrays"])
1720
(copy_function(attribute)))
1721
# Copy annotations, if any
1722
try:
1723
attr[attrname]._dbus_annotations = dict(
1724
attribute._dbus_annotations)
1725
except AttributeError:
1726
pass
1727
# Is this a D-Bus interface?
1728
elif getattr(attribute, "_dbus_is_interface", False):
1729
# Create a new, but exactly alike, function
1730
# object. Decorate it to be a new D-Bus interface
1731
# with the alternate D-Bus interface name. Add it
1732
# to the class.
1733
attr[attrname] = (
1734
dbus_interface_annotations(alt_interface)
1735
(copy_function(attribute)))
1736
if deprecate:
1737
# Deprecate all alternate interfaces
1738
iname = "_AlternateDBusNames_interface_annotation{}"
1739
for interface_name in interface_names:
1740
1741
@dbus_interface_annotations(interface_name)
1742
def func(self):
1743
return {"org.freedesktop.DBus.Deprecated":
1744
"true"}
1745
# Find an unused name
1746
for aname in (iname.format(i)
1747
for i in itertools.count()):
1748
if aname not in attr:
1749
attr[aname] = func
1750
break
1751
if interface_names:
1752
# Replace the class with a new subclass of it with
1753
# methods, signals, etc. as created above.
1754
if sys.version_info.major == 2:
1755
cls = type(b"{}Alternate".format(cls.__name__),
1756
(cls, ), attr)
1757
else:
1758
cls = type("{}Alternate".format(cls.__name__),
1759
(cls, ), attr)
1760
return cls
1761
1762
return wrapper
1763
1764
1765
@alternate_dbus_interfaces({"se.recompile.Mandos":
1766
"se.bsnet.fukt.Mandos"})
671
if (if_tag.getAttribute(u"name")
672
== u"org.freedesktop.DBus.Properties"):
673
for cn in if_tag.getElementsByTagName(u"method"):
674
if cn.getAttribute(u"name") == u"Get":
675
for arg in cn.getElementsByTagName(u"arg"):
676
if (arg.getAttribute(u"direction")
677
== u"out"):
678
arg.setAttribute(u"name", u"value")
679
elif cn.getAttribute(u"name") == u"GetAll":
680
for arg in cn.getElementsByTagName(u"arg"):
681
if (arg.getAttribute(u"direction")
682
== u"out"):
683
arg.setAttribute(u"name", u"props")
684
xmlstring = document.toxml(u"utf-8")
685
document.unlink()
686
except (AttributeError, xml.dom.DOMException,
687
xml.parsers.expat.ExpatError), error:
688
logger.error(u"Failed to override Introspection method",
689
error)
690
return xmlstring
691
692
1767
693
class ClientDBus(Client, DBusObjectWithProperties):
1768
694
"""A Client class using D-Bus
1769
695
1770
696
Attributes:
1771
697
dbus_object_path: dbus.ObjectPath
1772
698
bus: dbus.SystemBus()
1773
699
"""
1774
1775
runtime_expansions = (Client.runtime_expansions
1776
+ ("dbus_object_path", ))
1777
1778
_interface = "se.recompile.Mandos.Client"
1779
1780
700
# dbus.service.Object doesn't use super(), so we can't either.
1781
1782
def __init__(self, bus=None, *args, **kwargs):
701
702
def __init__(self, bus = None, *args, **kwargs):
1783
703
self.bus = bus
1784
704
Client.__init__(self, *args, **kwargs)
1785
705
# Only now, when this client is initialized, can it show up on
1786
706
# the D-Bus
1787
client_object_name = str(self.name).translate(
1788
{ord("."): ord("_"),
1789
ord("-"): ord("_")})
1790
self.dbus_object_path = dbus.ObjectPath(
1791
"/clients/" + client_object_name)
707
self.dbus_object_path = (dbus.ObjectPath
708
(u"/clients/"
709
+ self.name.replace(u".", u"_")))
1792
710
DBusObjectWithProperties.__init__(self, self.bus,
1793
711
self.dbus_object_path)
1794
1795
def notifychangeproperty(transform_func, dbus_name,
1796
type_func=lambda x: x,
1797
variant_level=1,
1798
invalidate_only=False,
1799
_interface=_interface):
1800
""" Modify a variable so that it's a property which announces
1801
its changes to DBus.
1802
1803
transform_fun: Function that takes a value and a variant_level
1804
and transforms it to a D-Bus type.
1805
dbus_name: D-Bus name of the variable
1806
type_func: Function that transform the value before sending it
1807
to the D-Bus. Default: no transform
1808
variant_level: D-Bus variant level. Default: 1
1809
"""
1810
attrname = "_{}".format(dbus_name)
1811
1812
def setter(self, value):
1813
if hasattr(self, "dbus_object_path"):
1814
if (not hasattr(self, attrname) or
1815
type_func(getattr(self, attrname, None))
1816
!= type_func(value)):
1817
if invalidate_only:
1818
self.PropertiesChanged(
1819
_interface, dbus.Dictionary(),
1820
dbus.Array((dbus_name, )))
1821
else:
1822
dbus_value = transform_func(
1823
type_func(value),
1824
variant_level=variant_level)
1825
self.PropertyChanged(dbus.String(dbus_name),
1826
dbus_value)
1827
self.PropertiesChanged(
1828
_interface,
1829
dbus.Dictionary({dbus.String(dbus_name):
1830
dbus_value}),
1831
dbus.Array())
1832
setattr(self, attrname, value)
1833
1834
return property(lambda self: getattr(self, attrname), setter)
1835
1836
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1837
approvals_pending = notifychangeproperty(dbus.Boolean,
1838
"ApprovalPending",
1839
type_func=bool)
1840
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1841
last_enabled = notifychangeproperty(datetime_to_dbus,
1842
"LastEnabled")
1843
checker = notifychangeproperty(
1844
dbus.Boolean, "CheckerRunning",
1845
type_func=lambda checker: checker is not None)
1846
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1847
"LastCheckedOK")
1848
last_checker_status = notifychangeproperty(dbus.Int16,
1849
"LastCheckerStatus")
1850
last_approval_request = notifychangeproperty(
1851
datetime_to_dbus, "LastApprovalRequest")
1852
approved_by_default = notifychangeproperty(dbus.Boolean,
1853
"ApprovedByDefault")
1854
approval_delay = notifychangeproperty(
1855
dbus.UInt64, "ApprovalDelay",
1856
type_func=lambda td: td.total_seconds() * 1000)
1857
approval_duration = notifychangeproperty(
1858
dbus.UInt64, "ApprovalDuration",
1859
type_func=lambda td: td.total_seconds() * 1000)
1860
host = notifychangeproperty(dbus.String, "Host")
1861
timeout = notifychangeproperty(
1862
dbus.UInt64, "Timeout",
1863
type_func=lambda td: td.total_seconds() * 1000)
1864
extended_timeout = notifychangeproperty(
1865
dbus.UInt64, "ExtendedTimeout",
1866
type_func=lambda td: td.total_seconds() * 1000)
1867
interval = notifychangeproperty(
1868
dbus.UInt64, "Interval",
1869
type_func=lambda td: td.total_seconds() * 1000)
1870
checker_command = notifychangeproperty(dbus.String, "Checker")
1871
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1872
invalidate_only=True)
1873
1874
del notifychangeproperty
1875
712
713
@staticmethod
714
def _datetime_to_dbus(dt, variant_level=0):
715
"""Convert a UTC datetime.datetime() to a D-Bus type."""
716
return dbus.String(dt.isoformat(),
717
variant_level=variant_level)
718
719
def enable(self):
720
oldstate = getattr(self, u"enabled", False)
721
r = Client.enable(self)
722
if oldstate != self.enabled:
723
# Emit D-Bus signals
724
self.PropertyChanged(dbus.String(u"enabled"),
725
dbus.Boolean(True, variant_level=1))
726
self.PropertyChanged(
727
dbus.String(u"last_enabled"),
728
self._datetime_to_dbus(self.last_enabled,
729
variant_level=1))
730
return r
731
732
def disable(self, quiet = False):
733
oldstate = getattr(self, u"enabled", False)
734
r = Client.disable(self, quiet=quiet)
735
if not quiet and oldstate != self.enabled:
736
# Emit D-Bus signal
737
self.PropertyChanged(dbus.String(u"enabled"),
738
dbus.Boolean(False, variant_level=1))
739
return r
740
1876
741
def __del__(self, *args, **kwargs):
1877
742
try:
1878
743
self.remove_from_connection()
1879
744
except LookupError:
1880
745
pass
1881
if hasattr(DBusObjectWithProperties, "__del__"):
746
if hasattr(DBusObjectWithProperties, u"__del__"):
1882
747
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1883
748
Client.__del__(self, *args, **kwargs)
1884
1885
def checker_callback(self, source, condition,
1886
connection, command, *args, **kwargs):
1887
ret = Client.checker_callback(self, source, condition,
1888
connection, command, *args,
1889
**kwargs)
1890
exitstatus = self.last_checker_status
1891
if exitstatus >= 0:
749
750
def checker_callback(self, pid, condition, command,
751
*args, **kwargs):
752
self.checker_callback_tag = None
753
self.checker = None
754
# Emit D-Bus signal
755
self.PropertyChanged(dbus.String(u"checker_running"),
756
dbus.Boolean(False, variant_level=1))
757
if os.WIFEXITED(condition):
758
exitstatus = os.WEXITSTATUS(condition)
1892
759
# Emit D-Bus signal
1893
760
self.CheckerCompleted(dbus.Int16(exitstatus),
1894
# This is specific to GNU libC
1895
dbus.Int64(exitstatus << 8),
761
dbus.Int64(condition),
1896
762
dbus.String(command))
1897
763
else:
1898
764
# Emit D-Bus signal
1899
765
self.CheckerCompleted(dbus.Int16(-1),
1900
dbus.Int64(
1901
# This is specific to GNU libC
1902
(exitstatus << 8)
1903
| self.last_checker_signal),
766
dbus.Int64(condition),
1904
767
dbus.String(command))
1905
return ret
1906
768
769
return Client.checker_callback(self, pid, condition, command,
770
*args, **kwargs)
771
772
def checked_ok(self, *args, **kwargs):
773
r = Client.checked_ok(self, *args, **kwargs)
774
# Emit D-Bus signal
775
self.PropertyChanged(
776
dbus.String(u"last_checked_ok"),
777
(self._datetime_to_dbus(self.last_checked_ok,
778
variant_level=1)))
779
return r
780
1907
781
def start_checker(self, *args, **kwargs):
1908
old_checker_pid = getattr(self.checker, "pid", None)
782
old_checker = self.checker
783
if self.checker is not None:
784
old_checker_pid = self.checker.pid
785
else:
786
old_checker_pid = None
1909
787
r = Client.start_checker(self, *args, **kwargs)
1910
788
# Only if new checker process was started
1911
789
if (self.checker is not None
1912
790
and old_checker_pid != self.checker.pid):
1913
791
# Emit D-Bus signal
1914
792
self.CheckerStarted(self.current_checker_command)
793
self.PropertyChanged(
794
dbus.String(u"checker_running"),
795
dbus.Boolean(True, variant_level=1))
796
return r
797
798
def stop_checker(self, *args, **kwargs):
799
old_checker = getattr(self, u"checker", None)
800
r = Client.stop_checker(self, *args, **kwargs)
801
if (old_checker is not None
802
and getattr(self, u"checker", None) is None):
803
self.PropertyChanged(dbus.String(u"checker_running"),
804
dbus.Boolean(False, variant_level=1))
1915
805
return r
1916
806
1917
807
def _reset_approved(self):
1918
self.approved = None
808
self._approved = None
1919
809
return False
1920
810
1921
811
def approve(self, value=True):
1922
self.approved = value
1923
GLib.timeout_add(int(self.approval_duration.total_seconds()
1924
* 1000), self._reset_approved)
1925
self.send_changedstate()
1926
1927
# D-Bus methods, signals & properties
1928
1929
# Interfaces
1930
1931
# Signals
1932
812
self._approved = value
813
gobject.timeout_add(self._timedelta_to_milliseconds(self.approved_duration, self._reset_approved))
814
815
def approved_pending(self):
816
return self.approvals_pending > 0
817
818
819
## D-Bus methods, signals & properties
820
_interface = u"se.bsnet.fukt.Mandos.Client"
821
822
## Signals
823
1933
824
# CheckerCompleted - signal
1934
@dbus.service.signal(_interface, signature="nxs")
825
@dbus.service.signal(_interface, signature=u"nxs")
1935
826
def CheckerCompleted(self, exitcode, waitstatus, command):
1936
827
"D-Bus signal"
1937
828
pass
1938
829
1939
830
# CheckerStarted - signal
1940
@dbus.service.signal(_interface, signature="s")
831
@dbus.service.signal(_interface, signature=u"s")
1941
832
def CheckerStarted(self, command):
1942
833
"D-Bus signal"
1943
834
pass
1944
835
1945
836
# PropertyChanged - signal
1946
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1947
@dbus.service.signal(_interface, signature="sv")
837
@dbus.service.signal(_interface, signature=u"sv")
1948
838
def PropertyChanged(self, property, value):
1949
839
"D-Bus signal"
1950
840
pass
1951
841
1952
842
# GotSecret - signal
1953
843
@dbus.service.signal(_interface)
1954
844
def GotSecret(self):
1955
"""D-Bus signal
1956
Is sent after a successful transfer of secret from the Mandos
1957
server to mandos-client
1958
"""
845
"D-Bus signal"
1959
846
pass
1960
847
1961
848
# Rejected - signal
1962
@dbus.service.signal(_interface, signature="s")
849
@dbus.service.signal(_interface, signature=u"s")
1963
850
def Rejected(self, reason):
1964
851
"D-Bus signal"
1965
852
pass
1966
853
1967
854
# NeedApproval - signal
1968
@dbus.service.signal(_interface, signature="tb")
855
@dbus.service.signal(_interface, signature=u"db")
1969
856
def NeedApproval(self, timeout, default):
1970
857
"D-Bus signal"
1971
return self.need_approval()
1972
1973
# Methods
858
pass
859
860
## Methods
1974
861
1975
862
# Approve - method
1976
@dbus.service.method(_interface, in_signature="b")
863
@dbus.service.method(_interface, in_signature=u"b")
1977
864
def Approve(self, value):
1978
865
self.approve(value)
1979
866
1980
867
# CheckedOK - method
1981
868
@dbus.service.method(_interface)
1982
869
def CheckedOK(self):
1983
self.checked_ok()
1984
870
return self.checked_ok()
871
1985
872
# Enable - method
1986
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1987
873
@dbus.service.method(_interface)
1988
874
def Enable(self):
1989
875
"D-Bus method"
1990
876
self.enable()
1991
877
1992
878
# StartChecker - method
1993
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1994
879
@dbus.service.method(_interface)
1995
880
def StartChecker(self):
1996
881
"D-Bus method"
1997
882
self.start_checker()
1998
883
1999
884
# Disable - method
2000
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2001
885
@dbus.service.method(_interface)
2002
886
def Disable(self):
2003
887
"D-Bus method"
2004
888
self.disable()
2005
889
2006
890
# StopChecker - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2008
891
@dbus.service.method(_interface)
2009
892
def StopChecker(self):
2010
893
self.stop_checker()
2011
2012
# Properties
2013
2014
# ApprovalPending - property
2015
@dbus_service_property(_interface, signature="b", access="read")
2016
def ApprovalPending_dbus_property(self):
2017
return dbus.Boolean(bool(self.approvals_pending))
2018
2019
# ApprovedByDefault - property
2020
@dbus_service_property(_interface,
2021
signature="b",
2022
access="readwrite")
2023
def ApprovedByDefault_dbus_property(self, value=None):
2024
if value is None: # get
2025
return dbus.Boolean(self.approved_by_default)
2026
self.approved_by_default = bool(value)
2027
2028
# ApprovalDelay - property
2029
@dbus_service_property(_interface,
2030
signature="t",
2031
access="readwrite")
2032
def ApprovalDelay_dbus_property(self, value=None):
2033
if value is None: # get
2034
return dbus.UInt64(self.approval_delay.total_seconds()
2035
* 1000)
2036
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2037
2038
# ApprovalDuration - property
2039
@dbus_service_property(_interface,
2040
signature="t",
2041
access="readwrite")
2042
def ApprovalDuration_dbus_property(self, value=None):
2043
if value is None: # get
2044
return dbus.UInt64(self.approval_duration.total_seconds()
2045
* 1000)
2046
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2047
2048
# Name - property
2049
@dbus_annotations(
2050
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2051
@dbus_service_property(_interface, signature="s", access="read")
2052
def Name_dbus_property(self):
894
895
## Properties
896
897
# approved_pending - property
898
@dbus_service_property(_interface, signature=u"b", access=u"read")
899
def approved_pending_dbus_property(self):
900
return dbus.Boolean(self.approved_pending())
901
902
# approved_by_default - property
903
@dbus_service_property(_interface, signature=u"b",
904
access=u"readwrite")
905
def approved_by_default_dbus_property(self):
906
return dbus.Boolean(self.approved_by_default)
907
908
# approved_delay - property
909
@dbus_service_property(_interface, signature=u"t",
910
access=u"readwrite")
911
def approved_delay_dbus_property(self):
912
return dbus.UInt64(self.approved_delay_milliseconds())
913
914
# approved_duration - property
915
@dbus_service_property(_interface, signature=u"t",
916
access=u"readwrite")
917
def approved_duration_dbus_property(self):
918
return dbus.UInt64(self._timedelta_to_milliseconds(
919
self.approved_duration))
920
921
# name - property
922
@dbus_service_property(_interface, signature=u"s", access=u"read")
923
def name_dbus_property(self):
2053
924
return dbus.String(self.name)
2054
2055
# KeyID - property
2056
@dbus_annotations(
2057
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2058
@dbus_service_property(_interface, signature="s", access="read")
2059
def KeyID_dbus_property(self):
2060
return dbus.String(self.key_id)
2061
2062
# Fingerprint - property
2063
@dbus_annotations(
2064
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2065
@dbus_service_property(_interface, signature="s", access="read")
2066
def Fingerprint_dbus_property(self):
925
926
# fingerprint - property
927
@dbus_service_property(_interface, signature=u"s", access=u"read")
928
def fingerprint_dbus_property(self):
2067
929
return dbus.String(self.fingerprint)
2068
2069
# Host - property
2070
@dbus_service_property(_interface,
2071
signature="s",
2072
access="readwrite")
2073
def Host_dbus_property(self, value=None):
930
931
# host - property
932
@dbus_service_property(_interface, signature=u"s",
933
access=u"readwrite")
934
def host_dbus_property(self, value=None):
2074
935
if value is None: # get
2075
936
return dbus.String(self.host)
2076
self.host = str(value)
2077
2078
# Created - property
2079
@dbus_annotations(
2080
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2081
@dbus_service_property(_interface, signature="s", access="read")
2082
def Created_dbus_property(self):
2083
return datetime_to_dbus(self.created)
2084
2085
# LastEnabled - property
2086
@dbus_service_property(_interface, signature="s", access="read")
2087
def LastEnabled_dbus_property(self):
2088
return datetime_to_dbus(self.last_enabled)
2089
2090
# Enabled - property
2091
@dbus_service_property(_interface,
2092
signature="b",
2093
access="readwrite")
2094
def Enabled_dbus_property(self, value=None):
937
self.host = value
938
# Emit D-Bus signal
939
self.PropertyChanged(dbus.String(u"host"),
940
dbus.String(value, variant_level=1))
941
942
# created - property
943
@dbus_service_property(_interface, signature=u"s", access=u"read")
944
def created_dbus_property(self):
945
return dbus.String(self._datetime_to_dbus(self.created))
946
947
# last_enabled - property
948
@dbus_service_property(_interface, signature=u"s", access=u"read")
949
def last_enabled_dbus_property(self):
950
if self.last_enabled is None:
951
return dbus.String(u"")
952
return dbus.String(self._datetime_to_dbus(self.last_enabled))
953
954
# enabled - property
955
@dbus_service_property(_interface, signature=u"b",
956
access=u"readwrite")
957
def enabled_dbus_property(self, value=None):
2095
958
if value is None: # get
2096
959
return dbus.Boolean(self.enabled)
2097
960
if value:
2098
961
self.enable()
2099
962
else:
2100
963
self.disable()
2101
2102
# LastCheckedOK - property
2103
@dbus_service_property(_interface,
2104
signature="s",
2105
access="readwrite")
2106
def LastCheckedOK_dbus_property(self, value=None):
964
965
# last_checked_ok - property
966
@dbus_service_property(_interface, signature=u"s",
967
access=u"readwrite")
968
def last_checked_ok_dbus_property(self, value=None):
2107
969
if value is not None:
2108
970
self.checked_ok()
2109
971
return
2110
return datetime_to_dbus(self.last_checked_ok)
2111
2112
# LastCheckerStatus - property
2113
@dbus_service_property(_interface, signature="n", access="read")
2114
def LastCheckerStatus_dbus_property(self):
2115
return dbus.Int16(self.last_checker_status)
2116
2117
# Expires - property
2118
@dbus_service_property(_interface, signature="s", access="read")
2119
def Expires_dbus_property(self):
2120
return datetime_to_dbus(self.expires)
2121
2122
# LastApprovalRequest - property
2123
@dbus_service_property(_interface, signature="s", access="read")
2124
def LastApprovalRequest_dbus_property(self):
2125
return datetime_to_dbus(self.last_approval_request)
2126
2127
# Timeout - property
2128
@dbus_service_property(_interface,
2129
signature="t",
2130
access="readwrite")
2131
def Timeout_dbus_property(self, value=None):
972
if self.last_checked_ok is None:
973
return dbus.String(u"")
974
return dbus.String(self._datetime_to_dbus(self
975
.last_checked_ok))
976
977
# timeout - property
978
@dbus_service_property(_interface, signature=u"t",
979
access=u"readwrite")
980
def timeout_dbus_property(self, value=None):
2132
981
if value is None: # get
2133
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2134
old_timeout = self.timeout
982
return dbus.UInt64(self.timeout_milliseconds())
2135
983
self.timeout = datetime.timedelta(0, 0, 0, value)
2136
# Reschedule disabling
2137
if self.enabled:
2138
now = datetime.datetime.utcnow()
2139
self.expires += self.timeout - old_timeout
2140
if self.expires <= now:
2141
# The timeout has passed
2142
self.disable()
2143
else:
2144
if (getattr(self, "disable_initiator_tag", None)
2145
is None):
2146
return
2147
GLib.source_remove(self.disable_initiator_tag)
2148
self.disable_initiator_tag = GLib.timeout_add(
2149
int((self.expires - now).total_seconds() * 1000),
2150
self.disable)
2151
2152
# ExtendedTimeout - property
2153
@dbus_service_property(_interface,
2154
signature="t",
2155
access="readwrite")
2156
def ExtendedTimeout_dbus_property(self, value=None):
2157
if value is None: # get
2158
return dbus.UInt64(self.extended_timeout.total_seconds()
2159
* 1000)
2160
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2161
2162
# Interval - property
2163
@dbus_service_property(_interface,
2164
signature="t",
2165
access="readwrite")
2166
def Interval_dbus_property(self, value=None):
2167
if value is None: # get
2168
return dbus.UInt64(self.interval.total_seconds() * 1000)
984
# Emit D-Bus signal
985
self.PropertyChanged(dbus.String(u"timeout"),
986
dbus.UInt64(value, variant_level=1))
987
if getattr(self, u"disable_initiator_tag", None) is None:
988
return
989
# Reschedule timeout
990
gobject.source_remove(self.disable_initiator_tag)
991
self.disable_initiator_tag = None
992
time_to_die = (self.
993
_timedelta_to_milliseconds((self
994
.last_checked_ok
995
+ self.timeout)
996
- datetime.datetime
997
.utcnow()))
998
if time_to_die <= 0:
999
# The timeout has passed
1000
self.disable()
1001
else:
1002
self.disable_initiator_tag = (gobject.timeout_add
1003
(time_to_die, self.disable))
1004
1005
# interval - property
1006
@dbus_service_property(_interface, signature=u"t",
1007
access=u"readwrite")
1008
def interval_dbus_property(self, value=None):
1009
if value is None: # get
1010
return dbus.UInt64(self.interval_milliseconds())
2169
1011
self.interval = datetime.timedelta(0, 0, 0, value)
2170
if getattr(self, "checker_initiator_tag", None) is None:
1012
# Emit D-Bus signal
1013
self.PropertyChanged(dbus.String(u"interval"),
1014
dbus.UInt64(value, variant_level=1))
1015
if getattr(self, u"checker_initiator_tag", None) is None:
2171
1016
return
2172
if self.enabled:
2173
# Reschedule checker run
2174
GLib.source_remove(self.checker_initiator_tag)
2175
self.checker_initiator_tag = GLib.timeout_add(
2176
value, self.start_checker)
2177
self.start_checker() # Start one now, too
1017
# Reschedule checker run
1018
gobject.source_remove(self.checker_initiator_tag)
1019
self.checker_initiator_tag = (gobject.timeout_add
1020
(value, self.start_checker))
1021
self.start_checker() # Start one now, too
2178
1022
2179
# Checker - property
2180
@dbus_service_property(_interface,
2181
signature="s",
2182
access="readwrite")
2183
def Checker_dbus_property(self, value=None):
1023
# checker - property
1024
@dbus_service_property(_interface, signature=u"s",
1025
access=u"readwrite")
1026
def checker_dbus_property(self, value=None):
2184
1027
if value is None: # get
2185
1028
return dbus.String(self.checker_command)
2186
self.checker_command = str(value)
2187
2188
# CheckerRunning - property
2189
@dbus_service_property(_interface,
2190
signature="b",
2191
access="readwrite")
2192
def CheckerRunning_dbus_property(self, value=None):
1029
self.checker_command = value
1030
# Emit D-Bus signal
1031
self.PropertyChanged(dbus.String(u"checker"),
1032
dbus.String(self.checker_command,
1033
variant_level=1))
1034
1035
# checker_running - property
1036
@dbus_service_property(_interface, signature=u"b",
1037
access=u"readwrite")
1038
def checker_running_dbus_property(self, value=None):
2193
1039
if value is None: # get
2194
1040
return dbus.Boolean(self.checker is not None)
2195
1041
if value:
2196
1042
self.start_checker()
2197
1043
else:
2198
1044
self.stop_checker()
2199
2200
# ObjectPath - property
2201
@dbus_annotations(
2202
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2203
"org.freedesktop.DBus.Deprecated": "true"})
2204
@dbus_service_property(_interface, signature="o", access="read")
2205
def ObjectPath_dbus_property(self):
2206
return self.dbus_object_path # is already a dbus.ObjectPath
2207
2208
# Secret = property
2209
@dbus_annotations(
2210
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2211
"invalidates"})
2212
@dbus_service_property(_interface,
2213
signature="ay",
2214
access="write",
2215
byte_arrays=True)
2216
def Secret_dbus_property(self, value):
2217
self.secret = bytes(value)
2218
1045
1046
# object_path - property
1047
@dbus_service_property(_interface, signature=u"o", access=u"read")
1048
def object_path_dbus_property(self):
1049
return self.dbus_object_path # is already a dbus.ObjectPath
1050
1051
# secret = property
1052
@dbus_service_property(_interface, signature=u"ay",
1053
access=u"write", byte_arrays=True)
1054
def secret_dbus_property(self, value):
1055
self.secret = str(value)
1056
2219
1057
del _interface
2220
1058
2221
1059
2222
1060
class ProxyClient(object):
2223
def __init__(self, child_pipe, key_id, fpr, address):
1061
def __init__(self, child_pipe, fpr, address):
2224
1062
self._pipe = child_pipe
2225
self._pipe.send(('init', key_id, fpr, address))
1063
self._pipe.send(('init', fpr, address))
2226
1064
if not self._pipe.recv():
2227
raise KeyError(key_id or fpr)
1065
raise KeyError()
2228
1066
2229
1067
def __getattribute__(self, name):
2230
if name == '_pipe':
1068
if(name == '_pipe'):
2231
1069
return super(ProxyClient, self).__getattribute__(name)
2232
1070
self._pipe.send(('getattr', name))
2233
1071
data = self._pipe.recv()
2234
1072
if data[0] == 'data':
2235
1073
return data[1]
2236
1074
if data[0] == 'function':
2237
2238
1075
def func(*args, **kwargs):
2239
1076
self._pipe.send(('funcall', name, args, kwargs))
2240
1077
return self._pipe.recv()[1]
2241
2242
1078
return func
2243
1079
2244
1080
def __setattr__(self, name, value):
2245
if name == '_pipe':
1081
if(name == '_pipe'):
2246
1082
return super(ProxyClient, self).__setattr__(name, value)
2247
1083
self._pipe.send(('setattr', name, value))
2248
1084
2249
1085
2250
1086
class ClientHandler(socketserver.BaseRequestHandler, object):
2251
1087
"""A class to handle client connections.
2252
1088
2253
1089
Instantiated once for each connection to handle it.
2254
1090
Note: This will run in its own forked process."""
2255
1091
2256
1092
def handle(self):
2257
1093
with contextlib.closing(self.server.child_pipe) as child_pipe:
2258
logger.info("TCP connection from: %s",
2259
str(self.client_address))
2260
logger.debug("Pipe FD: %d",
1094
logger.info(u"TCP connection from: %s",
1095
unicode(self.client_address))
1096
logger.debug(u"Pipe FD: %d",
2261
1097
self.server.child_pipe.fileno())
2262
1098
2263
session = gnutls.ClientSession(self.request)
2264
2265
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2266
# "+AES-256-CBC", "+SHA1",
2267
# "+COMP-NULL", "+CTYPE-OPENPGP",
2268
# "+DHE-DSS"))
1099
session = (gnutls.connection
1100
.ClientSession(self.request,
1101
gnutls.connection
1102
.X509Credentials()))
1103
1104
# Note: gnutls.connection.X509Credentials is really a
1105
# generic GnuTLS certificate credentials object so long as
1106
# no X.509 keys are added to it. Therefore, we can use it
1107
# here despite using OpenPGP certificates.
1108
1109
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1110
# u"+AES-256-CBC", u"+SHA1",
1111
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1112
# u"+DHE-DSS"))
2269
1113
# Use a fallback default, since this MUST be set.
2270
1114
priority = self.server.gnutls_priority
2271
1115
if priority is None:
2272
priority = "NORMAL"
2273
gnutls.priority_set_direct(session._c_object,
2274
priority.encode("utf-8"),
2275
None)
1116
priority = u"NORMAL"
1117
(gnutls.library.functions
1118
.gnutls_priority_set_direct(session._c_object,
1119
priority, None))
2276
1120
2277
1121
# Start communication using the Mandos protocol
2278
1122
# Get protocol number
2279
1123
line = self.request.makefile().readline()
2280
logger.debug("Protocol version: %r", line)
1124
logger.debug(u"Protocol version: %r", line)
2281
1125
try:
2282
1126
if int(line.strip().split()[0]) > 1:
2283
raise RuntimeError(line)
2284
except (ValueError, IndexError, RuntimeError) as error:
2285
logger.error("Unknown protocol version: %s", error)
1127
raise RuntimeError
1128
except (ValueError, IndexError, RuntimeError), error:
1129
logger.error(u"Unknown protocol version: %s", error)
2286
1130
return
2287
1131
2288
1132
# Start GnuTLS connection
2289
1133
try:
2290
1134
session.handshake()
2291
except gnutls.Error as error:
2292
logger.warning("Handshake failed: %s", error)
1135
except gnutls.errors.GNUTLSError, error:
1136
logger.warning(u"Handshake failed: %s", error)
2293
1137
# Do not run session.bye() here: the session is not
2294
1138
# established. Just abandon the request.
2295
1139
return
2296
logger.debug("Handshake succeeded")
1140
logger.debug(u"Handshake succeeded")
2297
1141
2298
1142
approval_required = False
2299
1143
try:
2300
if gnutls.has_rawpk:
2301
fpr = ""
2302
try:
2303
key_id = self.key_id(
2304
self.peer_certificate(session))
2305
except (TypeError, gnutls.Error) as error:
2306
logger.warning("Bad certificate: %s", error)
2307
return
2308
logger.debug("Key ID: %s", key_id)
2309
2310
else:
2311
key_id = ""
2312
try:
2313
fpr = self.fingerprint(
2314
self.peer_certificate(session))
2315
except (TypeError, gnutls.Error) as error:
2316
logger.warning("Bad certificate: %s", error)
2317
return
2318
logger.debug("Fingerprint: %s", fpr)
2319
2320
try:
2321
client = ProxyClient(child_pipe, key_id, fpr,
1144
try:
1145
fpr = self.fingerprint(self.peer_certificate
1146
(session))
1147
except (TypeError, gnutls.errors.GNUTLSError), error:
1148
logger.warning(u"Bad certificate: %s", error)
1149
return
1150
logger.debug(u"Fingerprint: %s", fpr)
1151
1152
try:
1153
client = ProxyClient(child_pipe, fpr,
2322
1154
self.client_address)
2323
1155
except KeyError:
2324
1156
return
2325
2326
if client.approval_delay:
2327
delay = client.approval_delay
1157
1158
if client.approved_delay:
1159
delay = client.approved_delay
2328
1160
client.approvals_pending += 1
2329
1161
approval_required = True
2330
1162
2331
1163
while True:
2332
1164
if not client.enabled:
2333
logger.info("Client %s is disabled",
2334
client.name)
1165
logger.warning(u"Client %s is disabled",
1166
client.name)
2335
1167
if self.server.use_dbus:
2336
1168
# Emit D-Bus signal
2337
client.Rejected("Disabled")
1169
client.Rejected("Disabled")
2338
1170
return
2339
2340
if client.approved or not client.approval_delay:
2341
# We are approved or approval is disabled
1171
1172
if client._approved or not client.approved_delay:
1173
#We are approved or approval is disabled
2342
1174
break
2343
elif client.approved is None:
2344
logger.info("Client %s needs approval",
1175
elif client._approved is None:
1176
logger.info(u"Client %s need approval",
2345
1177
client.name)
2346
1178
if self.server.use_dbus:
2347
1179
# Emit D-Bus signal
2348
1180
client.NeedApproval(
2349
client.approval_delay.total_seconds()
2350
* 1000, client.approved_by_default)
1181
client.approved_delay_milliseconds(),
1182
client.approved_by_default)
2351
1183
else:
2352
logger.warning("Client %s was not approved",
1184
logger.warning(u"Client %s was not approved",
2353
1185
client.name)
2354
1186
if self.server.use_dbus:
2355
1187
# Emit D-Bus signal
2356
client.Rejected("Denied")
1188
client.Rejected("Disapproved")
2357
1189
return
2358
2359
# wait until timeout or approved
1190
1191
#wait until timeout or approved
1192
#x = float(client._timedelta_to_milliseconds(delay))
2360
1193
time = datetime.datetime.now()
2361
1194
client.changedstate.acquire()
2362
client.changedstate.wait(delay.total_seconds())
1195
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2363
1196
client.changedstate.release()
2364
1197
time2 = datetime.datetime.now()
2365
1198
if (time2 - time) >= delay:
2369
1202
client.name)
2370
1203
if self.server.use_dbus:
2371
1204
# Emit D-Bus signal
2372
client.Rejected("Approval timed out")
1205
client.Rejected("Time out")
2373
1206
return
2374
1207
else:
2375
1208
break
2376
1209
else:
2377
1210
delay -= time2 - time
2378
2379
try:
2380
session.send(client.secret)
2381
except gnutls.Error as error:
2382
logger.warning("gnutls send failed",
2383
exc_info=error)
2384
return
2385
2386
logger.info("Sending secret to %s", client.name)
2387
# bump the timeout using extended_timeout
2388
client.bump_timeout(client.extended_timeout)
1211
1212
sent_size = 0
1213
while sent_size < len(client.secret):
1214
# XXX handle session exception
1215
sent = session.send(client.secret[sent_size:])
1216
logger.debug(u"Sent: %d, remaining: %d",
1217
sent, len(client.secret)
1218
- (sent_size + sent))
1219
sent_size += sent
1220
1221
logger.info(u"Sending secret to %s", client.name)
1222
# bump the timeout as if seen
1223
client.checked_ok()
2389
1224
if self.server.use_dbus:
2390
1225
# Emit D-Bus signal
2391
1226
client.GotSecret()
2392
1227
2393
1228
finally:
2394
1229
if approval_required:
2395
1230
client.approvals_pending -= 1
2396
try:
2397
session.bye()
2398
except gnutls.Error as error:
2399
logger.warning("GnuTLS bye failed",
2400
exc_info=error)
2401
1231
session.bye()
1232
2402
1233
@staticmethod
2403
1234
def peer_certificate(session):
2404
"Return the peer's certificate as a bytestring"
2405
try:
2406
cert_type = gnutls.certificate_type_get2(session._c_object,
2407
gnutls.CTYPE_PEERS)
2408
except AttributeError:
2409
cert_type = gnutls.certificate_type_get(session._c_object)
2410
if gnutls.has_rawpk:
2411
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2412
else:
2413
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2414
# If not a valid certificate type...
2415
if cert_type not in valid_cert_types:
2416
logger.info("Cert type %r not in %r", cert_type,
2417
valid_cert_types)
2418
# ...return invalid data
2419
return b""
1235
"Return the peer's OpenPGP certificate as a bytestring"
1236
# If not an OpenPGP certificate...
1237
if (gnutls.library.functions
1238
.gnutls_certificate_type_get(session._c_object)
1239
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1240
# ...do the normal thing
1241
return session.peer_certificate
2420
1242
list_size = ctypes.c_uint(1)
2421
cert_list = (gnutls.certificate_get_peers
1243
cert_list = (gnutls.library.functions
1244
.gnutls_certificate_get_peers
2422
1245
(session._c_object, ctypes.byref(list_size)))
2423
1246
if not bool(cert_list) and list_size.value != 0:
2424
raise gnutls.Error("error getting peer certificate")
1247
raise gnutls.errors.GNUTLSError(u"error getting peer"
1248
u" certificate")
2425
1249
if list_size.value == 0:
2426
1250
return None
2427
1251
cert = cert_list[0]
2428
1252
return ctypes.string_at(cert.data, cert.size)
2429
2430
@staticmethod
2431
def key_id(certificate):
2432
"Convert a certificate bytestring to a hexdigit key ID"
2433
# New GnuTLS "datum" with the public key
2434
datum = gnutls.datum_t(
2435
ctypes.cast(ctypes.c_char_p(certificate),
2436
ctypes.POINTER(ctypes.c_ubyte)),
2437
ctypes.c_uint(len(certificate)))
2438
# XXX all these need to be created in the gnutls "module"
2439
# New empty GnuTLS certificate
2440
pubkey = gnutls.pubkey_t()
2441
gnutls.pubkey_init(ctypes.byref(pubkey))
2442
# Import the raw public key into the certificate
2443
gnutls.pubkey_import(pubkey,
2444
ctypes.byref(datum),
2445
gnutls.X509_FMT_DER)
2446
# New buffer for the key ID
2447
buf = ctypes.create_string_buffer(32)
2448
buf_len = ctypes.c_size_t(len(buf))
2449
# Get the key ID from the raw public key into the buffer
2450
gnutls.pubkey_get_key_id(pubkey,
2451
gnutls.KEYID_USE_SHA256,
2452
ctypes.cast(ctypes.byref(buf),
2453
ctypes.POINTER(ctypes.c_ubyte)),
2454
ctypes.byref(buf_len))
2455
# Deinit the certificate
2456
gnutls.pubkey_deinit(pubkey)
2457
2458
# Convert the buffer to a Python bytestring
2459
key_id = ctypes.string_at(buf, buf_len.value)
2460
# Convert the bytestring to hexadecimal notation
2461
hex_key_id = binascii.hexlify(key_id).upper()
2462
return hex_key_id
2463
1253
2464
1254
@staticmethod
2465
1255
def fingerprint(openpgp):
2466
1256
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2467
1257
# New GnuTLS "datum" with the OpenPGP public key
2468
datum = gnutls.datum_t(
2469
ctypes.cast(ctypes.c_char_p(openpgp),
2470
ctypes.POINTER(ctypes.c_ubyte)),
2471
ctypes.c_uint(len(openpgp)))
1258
datum = (gnutls.library.types
1259
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1260
ctypes.POINTER
1261
(ctypes.c_ubyte)),
1262
ctypes.c_uint(len(openpgp))))
2472
1263
# New empty GnuTLS certificate
2473
crt = gnutls.openpgp_crt_t()
2474
gnutls.openpgp_crt_init(ctypes.byref(crt))
1264
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1265
(gnutls.library.functions
1266
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2475
1267
# Import the OpenPGP public key into the certificate
2476
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2477
gnutls.OPENPGP_FMT_RAW)
1268
(gnutls.library.functions
1269
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1270
gnutls.library.constants
1271
.GNUTLS_OPENPGP_FMT_RAW))
2478
1272
# Verify the self signature in the key
2479
1273
crtverify = ctypes.c_uint()
2480
gnutls.openpgp_crt_verify_self(crt, 0,
2481
ctypes.byref(crtverify))
1274
(gnutls.library.functions
1275
.gnutls_openpgp_crt_verify_self(crt, 0,
1276
ctypes.byref(crtverify)))
2482
1277
if crtverify.value != 0:
2483
gnutls.openpgp_crt_deinit(crt)
2484
raise gnutls.CertificateSecurityError(code
2485
=crtverify.value)
1278
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1279
raise (gnutls.errors.CertificateSecurityError
1280
(u"Verify failed"))
2486
1281
# New buffer for the fingerprint
2487
1282
buf = ctypes.create_string_buffer(20)
2488
1283
buf_len = ctypes.c_size_t()
2489
1284
# Get the fingerprint from the certificate into the buffer
2490
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2491
ctypes.byref(buf_len))
1285
(gnutls.library.functions
1286
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1287
ctypes.byref(buf_len)))
2492
1288
# Deinit the certificate
2493
gnutls.openpgp_crt_deinit(crt)
1289
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2494
1290
# Convert the buffer to a Python bytestring
2495
1291
fpr = ctypes.string_at(buf, buf_len.value)
2496
1292
# Convert the bytestring to hexadecimal notation
2497
hex_fpr = binascii.hexlify(fpr).upper()
1293
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2498
1294
return hex_fpr
2499
1295
2500
1296
2501
1297
class MultiprocessingMixIn(object):
2502
1298
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2503
2504
1299
def sub_process_main(self, request, address):
2505
1300
try:
2506
1301
self.finish_request(request, address)
2507
except Exception:
1302
except:
2508
1303
self.handle_error(request, address)
2509
1304
self.close_request(request)
2510
1305
2511
1306
def process_request(self, request, address):
2512
1307
"""Start a new process to process the request."""
2513
proc = multiprocessing.Process(target=self.sub_process_main,
2514
args=(request, address))
2515
proc.start()
2516
return proc
2517
1308
multiprocessing.Process(target = self.sub_process_main,
1309
args = (request, address)).start()
2518
1310
2519
1311
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2520
1312
""" adds a pipe to the MixIn """
2521
2522
1313
def process_request(self, request, client_address):
2523
1314
"""Overrides and wraps the original process_request().
2524
1315
2525
1316
This function creates a new pipe in self.pipe
2526
1317
"""
2527
1318
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2528
1319
2529
proc = MultiprocessingMixIn.process_request(self, request,
2530
client_address)
1320
super(MultiprocessingMixInWithPipe,
1321
self).process_request(request, client_address)
2531
1322
self.child_pipe.close()
2532
self.add_pipe(parent_pipe, proc)
2533
2534
def add_pipe(self, parent_pipe, proc):
1323
self.add_pipe(parent_pipe)
1324
1325
def add_pipe(self, parent_pipe):
2535
1326
"""Dummy function; override as necessary"""
2536
raise NotImplementedError()
2537
1327
pass
2538
1328
2539
1329
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2540
1330
socketserver.TCPServer, object):
2541
1331
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2542
1332
2543
1333
Attributes:
2544
1334
enabled: Boolean; whether this server is activated yet
2545
1335
interface: None or a network interface name (string)
2546
1336
use_ipv6: Boolean; to use IPv6 or not
2547
1337
"""
2548
2549
1338
def __init__(self, server_address, RequestHandlerClass,
2550
interface=None,
2551
use_ipv6=True,
2552
socketfd=None):
2553
"""If socketfd is set, use that file descriptor instead of
2554
creating a new one with socket.socket().
2555
"""
1339
interface=None, use_ipv6=True):
2556
1340
self.interface = interface
2557
1341
if use_ipv6:
2558
1342
self.address_family = socket.AF_INET6
2559
if socketfd is not None:
2560
# Save the file descriptor
2561
self.socketfd = socketfd
2562
# Save the original socket.socket() function
2563
self.socket_socket = socket.socket
2564
2565
# To implement --socket, we monkey patch socket.socket.
2566
#
2567
# (When socketserver.TCPServer is a new-style class, we
2568
# could make self.socket into a property instead of monkey
2569
# patching socket.socket.)
2570
#
2571
# Create a one-time-only replacement for socket.socket()
2572
@functools.wraps(socket.socket)
2573
def socket_wrapper(*args, **kwargs):
2574
# Restore original function so subsequent calls are
2575
# not affected.
2576
socket.socket = self.socket_socket
2577
del self.socket_socket
2578
# This time only, return a new socket object from the
2579
# saved file descriptor.
2580
return socket.fromfd(self.socketfd, *args, **kwargs)
2581
# Replace socket.socket() function with wrapper
2582
socket.socket = socket_wrapper
2583
# The socketserver.TCPServer.__init__ will call
2584
# socket.socket(), which might be our replacement,
2585
# socket_wrapper(), if socketfd was set.
2586
1343
socketserver.TCPServer.__init__(self, server_address,
2587
1344
RequestHandlerClass)
2588
2589
1345
def server_bind(self):
2590
1346
"""This overrides the normal server_bind() function
2591
1347
to bind to an interface if one was specified, and also NOT to
2592
1348
bind to an address or port if they were not specified."""
2593
global SO_BINDTODEVICE
2594
1349
if self.interface is not None:
2595
1350
if SO_BINDTODEVICE is None:
2596
# Fall back to a hard-coded value which seems to be
2597
# common enough.
2598
logger.warning("SO_BINDTODEVICE not found, trying 25")
2599
SO_BINDTODEVICE = 25
2600
try:
2601
self.socket.setsockopt(
2602
socket.SOL_SOCKET, SO_BINDTODEVICE,
2603
(self.interface + "\0").encode("utf-8"))
2604
except socket.error as error:
2605
if error.errno == errno.EPERM:
2606
logger.error("No permission to bind to"
2607
" interface %s", self.interface)
2608
elif error.errno == errno.ENOPROTOOPT:
2609
logger.error("SO_BINDTODEVICE not available;"
2610
" cannot bind to interface %s",
2611
self.interface)
2612
elif error.errno == errno.ENODEV:
2613
logger.error("Interface %s does not exist,"
2614
" cannot bind", self.interface)
2615
else:
2616
raise
1351
logger.error(u"SO_BINDTODEVICE does not exist;"
1352
u" cannot bind to interface %s",
1353
self.interface)
1354
else:
1355
try:
1356
self.socket.setsockopt(socket.SOL_SOCKET,
1357
SO_BINDTODEVICE,
1358
str(self.interface
1359
+ u'\0'))
1360
except socket.error, error:
1361
if error[0] == errno.EPERM:
1362
logger.error(u"No permission to"
1363
u" bind to interface %s",
1364
self.interface)
1365
elif error[0] == errno.ENOPROTOOPT:
1366
logger.error(u"SO_BINDTODEVICE not available;"
1367
u" cannot bind to interface %s",
1368
self.interface)
1369
else:
1370
raise
2617
1371
# Only bind(2) the socket if we really need to.
2618
1372
if self.server_address[0] or self.server_address[1]:
2619
1373
if not self.server_address[0]:
2620
1374
if self.address_family == socket.AF_INET6:
2621
any_address = "::" # in6addr_any
1375
any_address = u"::" # in6addr_any
2622
1376
else:
2623
any_address = "0.0.0.0" # INADDR_ANY
1377
any_address = socket.INADDR_ANY
2624
1378
self.server_address = (any_address,
2625
1379
self.server_address[1])
2626
1380
elif not self.server_address[1]:
2627
self.server_address = (self.server_address[0], 0)
1381
self.server_address = (self.server_address[0],
1382
0)
2628
1383
# if self.interface:
2629
1384
# self.server_address = (self.server_address[0],
2630
1385
# 0, # port
2636
1391
2637
1392
class MandosServer(IPv6_TCPServer):
2638
1393
"""Mandos server.
2639
1394
2640
1395
Attributes:
2641
1396
clients: set of Client objects
2642
1397
gnutls_priority GnuTLS priority string
2643
1398
use_dbus: Boolean; to emit D-Bus signals or not
2644
2645
Assumes a GLib.MainLoop event loop.
1399
1400
Assumes a gobject.MainLoop event loop.
2646
1401
"""
2647
2648
1402
def __init__(self, server_address, RequestHandlerClass,
2649
interface=None,
2650
use_ipv6=True,
2651
clients=None,
2652
gnutls_priority=None,
2653
use_dbus=True,
2654
socketfd=None):
1403
interface=None, use_ipv6=True, clients=None,
1404
gnutls_priority=None, use_dbus=True):
2655
1405
self.enabled = False
2656
1406
self.clients = clients
2657
1407
if self.clients is None:
2658
self.clients = {}
1408
self.clients = set()
2659
1409
self.use_dbus = use_dbus
2660
1410
self.gnutls_priority = gnutls_priority
2661
1411
IPv6_TCPServer.__init__(self, server_address,
2662
1412
RequestHandlerClass,
2663
interface=interface,
2664
use_ipv6=use_ipv6,
2665
socketfd=socketfd)
2666
1413
interface = interface,
1414
use_ipv6 = use_ipv6)
2667
1415
def server_activate(self):
2668
1416
if self.enabled:
2669
1417
return socketserver.TCPServer.server_activate(self)
2670
2671
1418
def enable(self):
2672
1419
self.enabled = True
2673
2674
def add_pipe(self, parent_pipe, proc):
1420
def add_pipe(self, parent_pipe):
2675
1421
# Call "handle_ipc" for both data and EOF events
2676
GLib.io_add_watch(
2677
parent_pipe.fileno(),
2678
GLib.IO_IN | GLib.IO_HUP,
2679
functools.partial(self.handle_ipc,
2680
parent_pipe=parent_pipe,
2681
proc=proc))
2682
2683
def handle_ipc(self, source, condition,
2684
parent_pipe=None,
2685
proc=None,
1422
gobject.io_add_watch(parent_pipe.fileno(),
1423
gobject.IO_IN | gobject.IO_HUP,
1424
functools.partial(self.handle_ipc,
1425
parent_pipe = parent_pipe))
1426
1427
def handle_ipc(self, source, condition, parent_pipe=None,
2686
1428
client_object=None):
2687
# error, or the other end of multiprocessing.Pipe has closed
2688
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2689
# Wait for other process to exit
2690
proc.join()
1429
condition_names = {
1430
gobject.IO_IN: u"IN", # There is data to read.
1431
gobject.IO_OUT: u"OUT", # Data can be written (without
1432
# blocking).
1433
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1434
gobject.IO_ERR: u"ERR", # Error condition.
1435
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1436
# broken, usually for pipes and
1437
# sockets).
1438
}
1439
conditions_string = ' | '.join(name
1440
for cond, name in
1441
condition_names.iteritems()
1442
if cond & condition)
1443
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1444
conditions_string)
1445
1446
# error or the other end of multiprocessing.Pipe has closed
1447
if condition & gobject.IO_HUP or condition & gobject.IO_ERR:
2691
1448
return False
2692
1449
2693
1450
# Read a request from the child
2694
1451
request = parent_pipe.recv()
1452
logger.debug(u"IPC request: %s", repr(request))
2695
1453
command = request[0]
2696
1454
2697
1455
if command == 'init':
2698
key_id = request[1].decode("ascii")
2699
fpr = request[2].decode("ascii")
2700
address = request[3]
2701
2702
for c in self.clients.values():
2703
if key_id and c.key_id == key_id:
2704
client = c
2705
break
2706
if fpr and c.fingerprint == fpr:
1456
fpr = request[1]
1457
address = request[2]
1458
1459
for c in self.clients:
1460
if c.fingerprint == fpr:
2707
1461
client = c
2708
1462
break
2709
1463
else:
2710
logger.info("Client not found for key ID: %s, address"
2711
": %s", key_id or fpr, address)
1464
logger.warning(u"Client not found for fingerprint: %s, ad"
1465
u"dress: %s", fpr, address)
2712
1466
if self.use_dbus:
2713
1467
# Emit D-Bus signal
2714
mandos_dbus_service.ClientNotFound(key_id or fpr,
2715
address[0])
1468
mandos_dbus_service.ClientNotFound(fpr, address)
2716
1469
parent_pipe.send(False)
2717
1470
return False
2718
2719
GLib.io_add_watch(
2720
parent_pipe.fileno(),
2721
GLib.IO_IN | GLib.IO_HUP,
2722
functools.partial(self.handle_ipc,
2723
parent_pipe=parent_pipe,
2724
proc=proc,
2725
client_object=client))
1471
1472
gobject.io_add_watch(parent_pipe.fileno(),
1473
gobject.IO_IN | gobject.IO_HUP,
1474
functools.partial(self.handle_ipc,
1475
parent_pipe = parent_pipe,
1476
client_object = client))
2726
1477
parent_pipe.send(True)
2727
# remove the old hook in favor of the new above hook on
2728
# same fileno
1478
# remove the old hook in favor of the new above hook on same fileno
2729
1479
return False
2730
1480
if command == 'funcall':
2731
1481
funcname = request[1]
2732
1482
args = request[2]
2733
1483
kwargs = request[3]
2734
2735
parent_pipe.send(('data', getattr(client_object,
2736
funcname)(*args,
2737
**kwargs)))
1484
1485
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2738
1486
2739
1487
if command == 'getattr':
2740
1488
attrname = request[1]
2741
if isinstance(client_object.__getattribute__(attrname),
2742
collections.Callable):
2743
parent_pipe.send(('function', ))
1489
if callable(client_object.__getattribute__(attrname)):
1490
parent_pipe.send(('function',))
2744
1491
else:
2745
parent_pipe.send((
2746
'data', client_object.__getattribute__(attrname)))
1492
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2747
1493
2748
1494
if command == 'setattr':
2749
1495
attrname = request[1]
2750
1496
value = request[2]
2751
1497
setattr(client_object, attrname, value)
2752
1498
2753
1499
return True
2754
1500
2755
1501
2756
def rfc3339_duration_to_delta(duration):
2757
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2758
2759
>>> rfc3339_duration_to_delta("P7D")
2760
datetime.timedelta(7)
2761
>>> rfc3339_duration_to_delta("PT60S")
2762
datetime.timedelta(0, 60)
2763
>>> rfc3339_duration_to_delta("PT60M")
2764
datetime.timedelta(0, 3600)
2765
>>> rfc3339_duration_to_delta("PT24H")
2766
datetime.timedelta(1)
2767
>>> rfc3339_duration_to_delta("P1W")
2768
datetime.timedelta(7)
2769
>>> rfc3339_duration_to_delta("PT5M30S")
2770
datetime.timedelta(0, 330)
2771
>>> rfc3339_duration_to_delta("P1DT3M20S")
2772
datetime.timedelta(1, 200)
2773
"""
2774
2775
# Parsing an RFC 3339 duration with regular expressions is not
2776
# possible - there would have to be multiple places for the same
2777
# values, like seconds. The current code, while more esoteric, is
2778
# cleaner without depending on a parsing library. If Python had a
2779
# built-in library for parsing we would use it, but we'd like to
2780
# avoid excessive use of external libraries.
2781
2782
# New type for defining tokens, syntax, and semantics all-in-one
2783
Token = collections.namedtuple("Token", (
2784
"regexp", # To match token; if "value" is not None, must have
2785
# a "group" containing digits
2786
"value", # datetime.timedelta or None
2787
"followers")) # Tokens valid after this token
2788
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2789
# the "duration" ABNF definition in RFC 3339, Appendix A.
2790
token_end = Token(re.compile(r"$"), None, frozenset())
2791
token_second = Token(re.compile(r"(\d+)S"),
2792
datetime.timedelta(seconds=1),
2793
frozenset((token_end, )))
2794
token_minute = Token(re.compile(r"(\d+)M"),
2795
datetime.timedelta(minutes=1),
2796
frozenset((token_second, token_end)))
2797
token_hour = Token(re.compile(r"(\d+)H"),
2798
datetime.timedelta(hours=1),
2799
frozenset((token_minute, token_end)))
2800
token_time = Token(re.compile(r"T"),
2801
None,
2802
frozenset((token_hour, token_minute,
2803
token_second)))
2804
token_day = Token(re.compile(r"(\d+)D"),
2805
datetime.timedelta(days=1),
2806
frozenset((token_time, token_end)))
2807
token_month = Token(re.compile(r"(\d+)M"),
2808
datetime.timedelta(weeks=4),
2809
frozenset((token_day, token_end)))
2810
token_year = Token(re.compile(r"(\d+)Y"),
2811
datetime.timedelta(weeks=52),
2812
frozenset((token_month, token_end)))
2813
token_week = Token(re.compile(r"(\d+)W"),
2814
datetime.timedelta(weeks=1),
2815
frozenset((token_end, )))
2816
token_duration = Token(re.compile(r"P"), None,
2817
frozenset((token_year, token_month,
2818
token_day, token_time,
2819
token_week)))
2820
# Define starting values:
2821
# Value so far
2822
value = datetime.timedelta()
2823
found_token = None
2824
# Following valid tokens
2825
followers = frozenset((token_duration, ))
2826
# String left to parse
2827
s = duration
2828
# Loop until end token is found
2829
while found_token is not token_end:
2830
# Search for any currently valid tokens
2831
for token in followers:
2832
match = token.regexp.match(s)
2833
if match is not None:
2834
# Token found
2835
if token.value is not None:
2836
# Value found, parse digits
2837
factor = int(match.group(1), 10)
2838
# Add to value so far
2839
value += factor * token.value
2840
# Strip token from string
2841
s = token.regexp.sub("", s, 1)
2842
# Go to found token
2843
found_token = token
2844
# Set valid next tokens
2845
followers = found_token.followers
2846
break
2847
else:
2848
# No currently valid tokens were found
2849
raise ValueError("Invalid RFC 3339 duration: {!r}"
2850
.format(duration))
2851
# End token found
2852
return value
2853
2854
2855
1502
def string_to_delta(interval):
2856
1503
"""Parse a string and return a datetime.timedelta
2857
2858
>>> string_to_delta('7d')
1504
1505
>>> string_to_delta(u'7d')
2859
1506
datetime.timedelta(7)
2860
>>> string_to_delta('60s')
1507
>>> string_to_delta(u'60s')
2861
1508
datetime.timedelta(0, 60)
2862
>>> string_to_delta('60m')
1509
>>> string_to_delta(u'60m')
2863
1510
datetime.timedelta(0, 3600)
2864
>>> string_to_delta('24h')
1511
>>> string_to_delta(u'24h')
2865
1512
datetime.timedelta(1)
2866
>>> string_to_delta('1w')
1513
>>> string_to_delta(u'1w')
2867
1514
datetime.timedelta(7)
2868
>>> string_to_delta('5m 30s')
1515
>>> string_to_delta(u'5m 30s')
2869
1516
datetime.timedelta(0, 330)
2870
1517
"""
2871
2872
try:
2873
return rfc3339_duration_to_delta(interval)
2874
except ValueError:
2875
pass
2876
2877
1518
timevalue = datetime.timedelta(0)
2878
1519
for s in interval.split():
2879
1520
try:
2880
suffix = s[-1]
1521
suffix = unicode(s[-1])
2881
1522
value = int(s[:-1])
2882
if suffix == "d":
1523
if suffix == u"d":
2883
1524
delta = datetime.timedelta(value)
2884
elif suffix == "s":
1525
elif suffix == u"s":
2885
1526
delta = datetime.timedelta(0, value)
2886
elif suffix == "m":
1527
elif suffix == u"m":
2887
1528
delta = datetime.timedelta(0, 0, 0, 0, value)
2888
elif suffix == "h":
1529
elif suffix == u"h":
2889
1530
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2890
elif suffix == "w":
1531
elif suffix == u"w":
2891
1532
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2892
1533
else:
2893
raise ValueError("Unknown suffix {!r}".format(suffix))
2894
except IndexError as e:
2895
raise ValueError(*(e.args))
1534
raise ValueError(u"Unknown suffix %r" % suffix)
1535
except (ValueError, IndexError), e:
1536
raise ValueError(e.message)
2896
1537
timevalue += delta
2897
1538
return timevalue
2898
1539
2899
1540
2900
def daemon(nochdir=False, noclose=False):
1541
def if_nametoindex(interface):
1542
"""Call the C function if_nametoindex(), or equivalent
1543
1544
Note: This function cannot accept a unicode string."""
1545
global if_nametoindex
1546
try:
1547
if_nametoindex = (ctypes.cdll.LoadLibrary
1548
(ctypes.util.find_library(u"c"))
1549
.if_nametoindex)
1550
except (OSError, AttributeError):
1551
logger.warning(u"Doing if_nametoindex the hard way")
1552
def if_nametoindex(interface):
1553
"Get an interface index the hard way, i.e. using fcntl()"
1554
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1555
with contextlib.closing(socket.socket()) as s:
1556
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1557
struct.pack(str(u"16s16x"),
1558
interface))
1559
interface_index = struct.unpack(str(u"I"),
1560
ifreq[16:20])[0]
1561
return interface_index
1562
return if_nametoindex(interface)
1563
1564
1565
def daemon(nochdir = False, noclose = False):
2901
1566
"""See daemon(3). Standard BSD Unix function.
2902
1567
2903
1568
This should really exist as os.daemon, but it doesn't (yet)."""
2904
1569
if os.fork():
2905
1570
sys.exit()
2906
1571
os.setsid()
2907
1572
if not nochdir:
2908
os.chdir("/")
1573
os.chdir(u"/")
2909
1574
if os.fork():
2910
1575
sys.exit()
2911
1576
if not noclose:
2912
1577
# Close all standard open file descriptors
2913
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1578
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2914
1579
if not stat.S_ISCHR(os.fstat(null).st_mode):
2915
1580
raise OSError(errno.ENODEV,
2916
"{} not a character device"
2917
.format(os.devnull))
1581
u"%s not a character device"
1582
% os.path.devnull)
2918
1583
os.dup2(null, sys.stdin.fileno())
2919
1584
os.dup2(null, sys.stdout.fileno())
2920
1585
os.dup2(null, sys.stderr.fileno())
2923
1588
2924
1589
2925
1590
def main():
2926
1591
2927
1592
##################################################################
2928
1593
# Parsing of options, both command line and config file
2929
2930
parser = argparse.ArgumentParser()
2931
parser.add_argument("-v", "--version", action="version",
2932
version="%(prog)s {}".format(version),
2933
help="show version number and exit")
2934
parser.add_argument("-i", "--interface", metavar="IF",
2935
help="Bind to interface IF")
2936
parser.add_argument("-a", "--address",
2937
help="Address to listen for requests on")
2938
parser.add_argument("-p", "--port", type=int,
2939
help="Port number to receive requests on")
2940
parser.add_argument("--check", action="store_true",
2941
help="Run self-test")
2942
parser.add_argument("--debug", action="store_true",
2943
help="Debug mode; run in foreground and log"
2944
" to terminal", default=None)
2945
parser.add_argument("--debuglevel", metavar="LEVEL",
2946
help="Debug level for stdout output")
2947
parser.add_argument("--priority", help="GnuTLS"
2948
" priority string (see GnuTLS documentation)")
2949
parser.add_argument("--servicename",
2950
metavar="NAME", help="Zeroconf service name")
2951
parser.add_argument("--configdir",
2952
default="/etc/mandos", metavar="DIR",
2953
help="Directory to search for configuration"
2954
" files")
2955
parser.add_argument("--no-dbus", action="store_false",
2956
dest="use_dbus", help="Do not provide D-Bus"
2957
" system bus interface", default=None)
2958
parser.add_argument("--no-ipv6", action="store_false",
2959
dest="use_ipv6", help="Do not use IPv6",
2960
default=None)
2961
parser.add_argument("--no-restore", action="store_false",
2962
dest="restore", help="Do not restore stored"
2963
" state", default=None)
2964
parser.add_argument("--socket", type=int,
2965
help="Specify a file descriptor to a network"
2966
" socket to use instead of creating one")
2967
parser.add_argument("--statedir", metavar="DIR",
2968
help="Directory to save/restore state in")
2969
parser.add_argument("--foreground", action="store_true",
2970
help="Run in foreground", default=None)
2971
parser.add_argument("--no-zeroconf", action="store_false",
2972
dest="zeroconf", help="Do not use Zeroconf",
2973
default=None)
2974
2975
options = parser.parse_args()
2976
1594
1595
parser = optparse.OptionParser(version = "%%prog %s" % version)
1596
parser.add_option("-i", u"--interface", type=u"string",
1597
metavar="IF", help=u"Bind to interface IF")
1598
parser.add_option("-a", u"--address", type=u"string",
1599
help=u"Address to listen for requests on")
1600
parser.add_option("-p", u"--port", type=u"int",
1601
help=u"Port number to receive requests on")
1602
parser.add_option("--check", action=u"store_true",
1603
help=u"Run self-test")
1604
parser.add_option("--debug", action=u"store_true",
1605
help=u"Debug mode; run in foreground and log to"
1606
u" terminal")
1607
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1608
u" priority string (see GnuTLS documentation)")
1609
parser.add_option("--servicename", type=u"string",
1610
metavar=u"NAME", help=u"Zeroconf service name")
1611
parser.add_option("--configdir", type=u"string",
1612
default=u"/etc/mandos", metavar=u"DIR",
1613
help=u"Directory to search for configuration"
1614
u" files")
1615
parser.add_option("--no-dbus", action=u"store_false",
1616
dest=u"use_dbus", help=u"Do not provide D-Bus"
1617
u" system bus interface")
1618
parser.add_option("--no-ipv6", action=u"store_false",
1619
dest=u"use_ipv6", help=u"Do not use IPv6")
1620
options = parser.parse_args()[0]
1621
2977
1622
if options.check:
2978
1623
import doctest
2979
fail_count, test_count = doctest.testmod()
2980
sys.exit(os.EX_OK if fail_count == 0 else 1)
2981
1624
doctest.testmod()
1625
sys.exit()
1626
2982
1627
# Default values for config file for server-global settings
2983
if gnutls.has_rawpk:
2984
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2985
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2986
else:
2987
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2988
":+SIGN-DSA-SHA256")
2989
server_defaults = {"interface": "",
2990
"address": "",
2991
"port": "",
2992
"debug": "False",
2993
"priority": priority,
2994
"servicename": "Mandos",
2995
"use_dbus": "True",
2996
"use_ipv6": "True",
2997
"debuglevel": "",
2998
"restore": "True",
2999
"socket": "",
3000
"statedir": "/var/lib/mandos",
3001
"foreground": "False",
3002
"zeroconf": "True",
3003
}
3004
del priority
3005
1628
server_defaults = { u"interface": u"",
1629
u"address": u"",
1630
u"port": u"",
1631
u"debug": u"False",
1632
u"priority":
1633
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1634
u"servicename": u"Mandos",
1635
u"use_dbus": u"True",
1636
u"use_ipv6": u"True",
1637
}
1638
3006
1639
# Parse config file for server-global settings
3007
1640
server_config = configparser.SafeConfigParser(server_defaults)
3008
1641
del server_defaults
3009
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1642
server_config.read(os.path.join(options.configdir,
1643
u"mandos.conf"))
3010
1644
# Convert the SafeConfigParser object to a dict
3011
1645
server_settings = server_config.defaults()
3012
1646
# Use the appropriate methods on the non-string config options
3013
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3014
"foreground", "zeroconf"):
3015
server_settings[option] = server_config.getboolean("DEFAULT",
1647
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1648
server_settings[option] = server_config.getboolean(u"DEFAULT",
3016
1649
option)
3017
1650
if server_settings["port"]:
3018
server_settings["port"] = server_config.getint("DEFAULT",
3019
"port")
3020
if server_settings["socket"]:
3021
server_settings["socket"] = server_config.getint("DEFAULT",
3022
"socket")
3023
# Later, stdin will, and stdout and stderr might, be dup'ed
3024
# over with an opened os.devnull. But we don't want this to
3025
# happen with a supplied network socket.
3026
if 0 <= server_settings["socket"] <= 2:
3027
server_settings["socket"] = os.dup(server_settings
3028
["socket"])
1651
server_settings["port"] = server_config.getint(u"DEFAULT",
1652
u"port")
3029
1653
del server_config
3030
1654
3031
1655
# Override the settings from the config file with command line
3032
1656
# options, if set.
3033
for option in ("interface", "address", "port", "debug",
3034
"priority", "servicename", "configdir", "use_dbus",
3035
"use_ipv6", "debuglevel", "restore", "statedir",
3036
"socket", "foreground", "zeroconf"):
1657
for option in (u"interface", u"address", u"port", u"debug",
1658
u"priority", u"servicename", u"configdir",
1659
u"use_dbus", u"use_ipv6"):
3037
1660
value = getattr(options, option)
3038
1661
if value is not None:
3039
1662
server_settings[option] = value
3040
1663
del options
3041
1664
# Force all strings to be unicode
3042
1665
for option in server_settings.keys():
3043
if isinstance(server_settings[option], bytes):
3044
server_settings[option] = (server_settings[option]
3045
.decode("utf-8"))
3046
# Force all boolean options to be boolean
3047
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3048
"foreground", "zeroconf"):
3049
server_settings[option] = bool(server_settings[option])
3050
# Debug implies foreground
3051
if server_settings["debug"]:
3052
server_settings["foreground"] = True
1666
if type(server_settings[option]) is str:
1667
server_settings[option] = unicode(server_settings[option])
3053
1668
# Now we have our good server settings in "server_settings"
3054
1669
3055
1670
##################################################################
3056
3057
if (not server_settings["zeroconf"]
3058
and not (server_settings["port"]
3059
or server_settings["socket"] != "")):
3060
parser.error("Needs port or socket to work without Zeroconf")
3061
1671
3062
1672
# For convenience
3063
debug = server_settings["debug"]
3064
debuglevel = server_settings["debuglevel"]
3065
use_dbus = server_settings["use_dbus"]
3066
use_ipv6 = server_settings["use_ipv6"]
3067
stored_state_path = os.path.join(server_settings["statedir"],
3068
stored_state_file)
3069
foreground = server_settings["foreground"]
3070
zeroconf = server_settings["zeroconf"]
3071
3072
if debug:
3073
initlogger(debug, logging.DEBUG)
3074
else:
3075
if not debuglevel:
3076
initlogger(debug)
3077
else:
3078
level = getattr(logging, debuglevel.upper())
3079
initlogger(debug, level)
3080
3081
if server_settings["servicename"] != "Mandos":
3082
syslogger.setFormatter(
3083
logging.Formatter('Mandos ({}) [%(process)d]:'
3084
' %(levelname)s: %(message)s'.format(
3085
server_settings["servicename"])))
3086
1673
debug = server_settings[u"debug"]
1674
use_dbus = server_settings[u"use_dbus"]
1675
use_ipv6 = server_settings[u"use_ipv6"]
1676
1677
if not debug:
1678
syslogger.setLevel(logging.WARNING)
1679
console.setLevel(logging.WARNING)
1680
1681
if server_settings[u"servicename"] != u"Mandos":
1682
syslogger.setFormatter(logging.Formatter
1683
(u'Mandos (%s) [%%(process)d]:'
1684
u' %%(levelname)s: %%(message)s'
1685
% server_settings[u"servicename"]))
1686
3087
1687
# Parse config file with clients
3088
client_config = configparser.SafeConfigParser(Client
3089
.client_defaults)
3090
client_config.read(os.path.join(server_settings["configdir"],
3091
"clients.conf"))
3092
1688
client_defaults = { u"timeout": u"1h",
1689
u"interval": u"5m",
1690
u"checker": u"fping -q -- %%(host)s",
1691
u"host": u"",
1692
u"approved_delay": u"5m",
1693
u"approved_duration": u"1s",
1694
}
1695
client_config = configparser.SafeConfigParser(client_defaults)
1696
client_config.read(os.path.join(server_settings[u"configdir"],
1697
u"clients.conf"))
1698
3093
1699
global mandos_dbus_service
3094
1700
mandos_dbus_service = None
3095
3096
socketfd = None
3097
if server_settings["socket"] != "":
3098
socketfd = server_settings["socket"]
3099
tcp_server = MandosServer(
3100
(server_settings["address"], server_settings["port"]),
3101
ClientHandler,
3102
interface=(server_settings["interface"] or None),
3103
use_ipv6=use_ipv6,
3104
gnutls_priority=server_settings["priority"],
3105
use_dbus=use_dbus,
3106
socketfd=socketfd)
3107
if not foreground:
3108
pidfilename = "/run/mandos.pid"
3109
if not os.path.isdir("/run/."):
3110
pidfilename = "/var/run/mandos.pid"
3111
pidfile = None
3112
try:
3113
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3114
except IOError as e:
3115
logger.error("Could not open file %r", pidfilename,
3116
exc_info=e)
3117
3118
for name, group in (("_mandos", "_mandos"),
3119
("mandos", "mandos"),
3120
("nobody", "nogroup")):
3121
try:
3122
uid = pwd.getpwnam(name).pw_uid
3123
gid = pwd.getpwnam(group).pw_gid
3124
break
1701
1702
tcp_server = MandosServer((server_settings[u"address"],
1703
server_settings[u"port"]),
1704
ClientHandler,
1705
interface=server_settings[u"interface"],
1706
use_ipv6=use_ipv6,
1707
gnutls_priority=
1708
server_settings[u"priority"],
1709
use_dbus=use_dbus)
1710
pidfilename = u"/var/run/mandos.pid"
1711
try:
1712
pidfile = open(pidfilename, u"w")
1713
except IOError:
1714
logger.error(u"Could not open file %r", pidfilename)
1715
1716
try:
1717
uid = pwd.getpwnam(u"_mandos").pw_uid
1718
gid = pwd.getpwnam(u"_mandos").pw_gid
1719
except KeyError:
1720
try:
1721
uid = pwd.getpwnam(u"mandos").pw_uid
1722
gid = pwd.getpwnam(u"mandos").pw_gid
3125
1723
except KeyError:
3126
continue
3127
else:
3128
uid = 65534
3129
gid = 65534
1724
try:
1725
uid = pwd.getpwnam(u"nobody").pw_uid
1726
gid = pwd.getpwnam(u"nobody").pw_gid
1727
except KeyError:
1728
uid = 65534
1729
gid = 65534
3130
1730
try:
3131
1731
os.setgid(gid)
3132
1732
os.setuid(uid)
3133
if debug:
3134
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3135
gid))
3136
except OSError as error:
3137
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3138
.format(uid, gid, os.strerror(error.errno)))
3139
if error.errno != errno.EPERM:
3140
raise
3141
1733
except OSError, error:
1734
if error[0] != errno.EPERM:
1735
raise error
1736
1737
# Enable all possible GnuTLS debugging
3142
1738
if debug:
3143
# Enable all possible GnuTLS debugging
3144
3145
1739
# "Use a log level over 10 to enable all debugging options."
3146
1740
# - GnuTLS manual
3147
gnutls.global_set_log_level(11)
3148
3149
@gnutls.log_func
1741
gnutls.library.functions.gnutls_global_set_log_level(11)
1742
1743
@gnutls.library.types.gnutls_log_func
3150
1744
def debug_gnutls(level, string):
3151
logger.debug("GnuTLS: %s", string[:-1])
3152
3153
gnutls.global_set_log_function(debug_gnutls)
3154
3155
# Redirect stdin so all checkers get /dev/null
3156
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3157
os.dup2(null, sys.stdin.fileno())
3158
if null > 2:
3159
os.close(null)
3160
3161
# Need to fork before connecting to D-Bus
3162
if not foreground:
3163
# Close all input and output, do double fork, etc.
3164
daemon()
3165
3166
# multiprocessing will use threads, so before we use GLib we need
3167
# to inform GLib that threads will be used.
3168
GLib.threads_init()
3169
1745
logger.debug(u"GnuTLS: %s", string[:-1])
1746
1747
(gnutls.library.functions
1748
.gnutls_global_set_log_function(debug_gnutls))
1749
3170
1750
global main_loop
3171
1751
# From the Avahi example code
3172
DBusGMainLoop(set_as_default=True)
3173
main_loop = GLib.MainLoop()
1752
DBusGMainLoop(set_as_default=True )
1753
main_loop = gobject.MainLoop()
3174
1754
bus = dbus.SystemBus()
3175
1755
# End of Avahi example code
3176
1756
if use_dbus:
3177
1757
try:
3178
bus_name = dbus.service.BusName("se.recompile.Mandos",
3179
bus,
3180
do_not_queue=True)
3181
old_bus_name = dbus.service.BusName(
3182
"se.bsnet.fukt.Mandos", bus,
3183
do_not_queue=True)
3184
except dbus.exceptions.DBusException as e:
3185
logger.error("Disabling D-Bus:", exc_info=e)
1758
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1759
bus, do_not_queue=True)
1760
except dbus.exceptions.NameExistsException, e:
1761
logger.error(unicode(e) + u", disabling D-Bus")
3186
1762
use_dbus = False
3187
server_settings["use_dbus"] = False
1763
server_settings[u"use_dbus"] = False
3188
1764
tcp_server.use_dbus = False
3189
if zeroconf:
3190
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3191
service = AvahiServiceToSyslog(
3192
name=server_settings["servicename"],
3193
servicetype="_mandos._tcp",
3194
protocol=protocol,
3195
bus=bus)
3196
if server_settings["interface"]:
3197
service.interface = if_nametoindex(
3198
server_settings["interface"].encode("utf-8"))
1765
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1766
service = AvahiService(name = server_settings[u"servicename"],
1767
servicetype = u"_mandos._tcp",
1768
protocol = protocol, bus = bus)
1769
if server_settings["interface"]:
1770
service.interface = (if_nametoindex
1771
(str(server_settings[u"interface"])))
3199
1772
3200
1773
global multiprocessing_manager
3201
1774
multiprocessing_manager = multiprocessing.Manager()
3202
1775
3203
1776
client_class = Client
3204
1777
if use_dbus:
3205
client_class = functools.partial(ClientDBus, bus=bus)
3206
3207
client_settings = Client.config_parser(client_config)
3208
old_client_settings = {}
3209
clients_data = {}
3210
3211
# This is used to redirect stdout and stderr for checker processes
3212
global wnull
3213
wnull = open(os.devnull, "w") # A writable /dev/null
3214
# Only used if server is running in foreground but not in debug
3215
# mode
3216
if debug or not foreground:
3217
wnull.close()
3218
3219
# Get client data and settings from last running state.
3220
if server_settings["restore"]:
3221
try:
3222
with open(stored_state_path, "rb") as stored_state:
3223
if sys.version_info.major == 2:
3224
clients_data, old_client_settings = pickle.load(
3225
stored_state)
3226
else:
3227
bytes_clients_data, bytes_old_client_settings = (
3228
pickle.load(stored_state, encoding="bytes"))
3229
# Fix bytes to strings
3230
# clients_data
3231
# .keys()
3232
clients_data = {(key.decode("utf-8")
3233
if isinstance(key, bytes)
3234
else key): value
3235
for key, value in
3236
bytes_clients_data.items()}
3237
del bytes_clients_data
3238
for key in clients_data:
3239
value = {(k.decode("utf-8")
3240
if isinstance(k, bytes) else k): v
3241
for k, v in
3242
clients_data[key].items()}
3243
clients_data[key] = value
3244
# .client_structure
3245
value["client_structure"] = [
3246
(s.decode("utf-8")
3247
if isinstance(s, bytes)
3248
else s) for s in
3249
value["client_structure"]]
3250
# .name & .host
3251
for k in ("name", "host"):
3252
if isinstance(value[k], bytes):
3253
value[k] = value[k].decode("utf-8")
3254
if not value.has_key("key_id"):
3255
value["key_id"] = ""
3256
elif not value.has_key("fingerprint"):
3257
value["fingerprint"] = ""
3258
# old_client_settings
3259
# .keys()
3260
old_client_settings = {
3261
(key.decode("utf-8")
3262
if isinstance(key, bytes)
3263
else key): value
3264
for key, value in
3265
bytes_old_client_settings.items()}
3266
del bytes_old_client_settings
3267
# .host
3268
for value in old_client_settings.values():
3269
if isinstance(value["host"], bytes):
3270
value["host"] = (value["host"]
3271
.decode("utf-8"))
3272
os.remove(stored_state_path)
3273
except IOError as e:
3274
if e.errno == errno.ENOENT:
3275
logger.warning("Could not load persistent state:"
3276
" {}".format(os.strerror(e.errno)))
3277
else:
3278
logger.critical("Could not load persistent state:",
3279
exc_info=e)
3280
raise
3281
except EOFError as e:
3282
logger.warning("Could not load persistent state: "
3283
"EOFError:",
3284
exc_info=e)
3285
3286
with PGPEngine() as pgp:
3287
for client_name, client in clients_data.items():
3288
# Skip removed clients
3289
if client_name not in client_settings:
3290
continue
3291
3292
# Decide which value to use after restoring saved state.
3293
# We have three different values: Old config file,
3294
# new config file, and saved state.
3295
# New config value takes precedence if it differs from old
3296
# config value, otherwise use saved state.
3297
for name, value in client_settings[client_name].items():
3298
try:
3299
# For each value in new config, check if it
3300
# differs from the old config value (Except for
3301
# the "secret" attribute)
3302
if (name != "secret"
3303
and (value !=
3304
old_client_settings[client_name][name])):
3305
client[name] = value
3306
except KeyError:
3307
pass
3308
3309
# Clients who has passed its expire date can still be
3310
# enabled if its last checker was successful. A Client
3311
# whose checker succeeded before we stored its state is
3312
# assumed to have successfully run all checkers during
3313
# downtime.
3314
if client["enabled"]:
3315
if datetime.datetime.utcnow() >= client["expires"]:
3316
if not client["last_checked_ok"]:
3317
logger.warning(
3318
"disabling client {} - Client never "
3319
"performed a successful checker".format(
3320
client_name))
3321
client["enabled"] = False
3322
elif client["last_checker_status"] != 0:
3323
logger.warning(
3324
"disabling client {} - Client last"
3325
" checker failed with error code"
3326
" {}".format(
3327
client_name,
3328
client["last_checker_status"]))
3329
client["enabled"] = False
3330
else:
3331
client["expires"] = (
3332
datetime.datetime.utcnow()
3333
+ client["timeout"])
3334
logger.debug("Last checker succeeded,"
3335
" keeping {} enabled".format(
3336
client_name))
1778
client_class = functools.partial(ClientDBus, bus = bus)
1779
def client_config_items(config, section):
1780
special_settings = {
1781
"approved_by_default":
1782
lambda: config.getboolean(section,
1783
"approved_by_default"),
1784
}
1785
for name, value in config.items(section):
3337
1786
try:
3338
client["secret"] = pgp.decrypt(
3339
client["encrypted_secret"],
3340
client_settings[client_name]["secret"])
3341
except PGPError:
3342
# If decryption fails, we use secret from new settings
3343
logger.debug("Failed to decrypt {} old secret".format(
3344
client_name))
3345
client["secret"] = (client_settings[client_name]
3346
["secret"])
3347
3348
# Add/remove clients based on new changes made to config
3349
for client_name in (set(old_client_settings)
3350
- set(client_settings)):
3351
del clients_data[client_name]
3352
for client_name in (set(client_settings)
3353
- set(old_client_settings)):
3354
clients_data[client_name] = client_settings[client_name]
3355
3356
# Create all client objects
3357
for client_name, client in clients_data.items():
3358
tcp_server.clients[client_name] = client_class(
3359
name=client_name,
3360
settings=client,
3361
server_settings=server_settings)
3362
1787
yield (name, special_settings[name]())
1788
except KeyError:
1789
yield (name, value)
1790
1791
tcp_server.clients.update(set(
1792
client_class(name = section,
1793
config= dict(client_config_items(
1794
client_config, section)))
1795
for section in client_config.sections()))
3363
1796
if not tcp_server.clients:
3364
logger.warning("No clients defined")
3365
3366
if not foreground:
3367
if pidfile is not None:
1797
logger.warning(u"No clients defined")
1798
1799
if debug:
1800
# Redirect stdin so all checkers get /dev/null
1801
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1802
os.dup2(null, sys.stdin.fileno())
1803
if null > 2:
1804
os.close(null)
1805
else:
1806
# No console logging
1807
logger.removeHandler(console)
1808
# Close all input and output, do double fork, etc.
1809
daemon()
1810
1811
try:
1812
with pidfile:
3368
1813
pid = os.getpid()
3369
try:
3370
with pidfile:
3371
print(pid, file=pidfile)
3372
except IOError:
3373
logger.error("Could not write to file %r with PID %d",
3374
pidfilename, pid)
1814
pidfile.write(str(pid) + "\n")
3375
1815
del pidfile
3376
del pidfilename
3377
3378
for termsig in (signal.SIGHUP, signal.SIGTERM):
3379
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3380
lambda: main_loop.quit() and False)
3381
1816
except IOError:
1817
logger.error(u"Could not write to file %r with PID %d",
1818
pidfilename, pid)
1819
except NameError:
1820
# "pidfile" was never created
1821
pass
1822
del pidfilename
1823
1824
if not debug:
1825
signal.signal(signal.SIGINT, signal.SIG_IGN)
1826
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1827
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1828
3382
1829
if use_dbus:
3383
3384
@alternate_dbus_interfaces(
3385
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3386
class MandosDBusService(DBusObjectWithObjectManager):
1830
class MandosDBusService(dbus.service.Object):
3387
1831
"""A D-Bus proxy object"""
3388
3389
1832
def __init__(self):
3390
dbus.service.Object.__init__(self, bus, "/")
3391
3392
_interface = "se.recompile.Mandos"
3393
3394
@dbus.service.signal(_interface, signature="o")
1833
dbus.service.Object.__init__(self, bus, u"/")
1834
_interface = u"se.bsnet.fukt.Mandos"
1835
1836
@dbus.service.signal(_interface, signature=u"o")
3395
1837
def ClientAdded(self, objpath):
3396
1838
"D-Bus signal"
3397
1839
pass
3398
3399
@dbus.service.signal(_interface, signature="ss")
3400
def ClientNotFound(self, key_id, address):
1840
1841
@dbus.service.signal(_interface, signature=u"ss")
1842
def ClientNotFound(self, fingerprint, address):
3401
1843
"D-Bus signal"
3402
1844
pass
3403
3404
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3405
"true"})
3406
@dbus.service.signal(_interface, signature="os")
1845
1846
@dbus.service.signal(_interface, signature=u"os")
3407
1847
def ClientRemoved(self, objpath, name):
3408
1848
"D-Bus signal"
3409
1849
pass
3410
3411
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3412
"true"})
3413
@dbus.service.method(_interface, out_signature="ao")
1850
1851
@dbus.service.method(_interface, out_signature=u"ao")
3414
1852
def GetAllClients(self):
3415
1853
"D-Bus method"
3416
return dbus.Array(c.dbus_object_path for c in
3417
tcp_server.clients.values())
3418
3419
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3420
"true"})
1854
return dbus.Array(c.dbus_object_path
1855
for c in tcp_server.clients)
1856
3421
1857
@dbus.service.method(_interface,
3422
out_signature="a{oa{sv}}")
1858
out_signature=u"a{oa{sv}}")
3423
1859
def GetAllClientsWithProperties(self):
3424
1860
"D-Bus method"
3425
1861
return dbus.Dictionary(
3426
{c.dbus_object_path: c.GetAll(
3427
"se.recompile.Mandos.Client")
3428
for c in tcp_server.clients.values()},
3429
signature="oa{sv}")
3430
3431
@dbus.service.method(_interface, in_signature="o")
1862
((c.dbus_object_path, c.GetAll(u""))
1863
for c in tcp_server.clients),
1864
signature=u"oa{sv}")
1865
1866
@dbus.service.method(_interface, in_signature=u"o")
3432
1867
def RemoveClient(self, object_path):
3433
1868
"D-Bus method"
3434
for c in tcp_server.clients.values():
1869
for c in tcp_server.clients:
3435
1870
if c.dbus_object_path == object_path:
3436
del tcp_server.clients[c.name]
1871
tcp_server.clients.remove(c)
3437
1872
c.remove_from_connection()
3438
# Don't signal the disabling
1873
# Don't signal anything except ClientRemoved
3439
1874
c.disable(quiet=True)
3440
# Emit D-Bus signal for removal
3441
self.client_removed_signal(c)
1875
# Emit D-Bus signal
1876
self.ClientRemoved(object_path, c.name)
3442
1877
return
3443
1878
raise KeyError(object_path)
3444
1879
3445
1880
del _interface
3446
3447
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3448
out_signature="a{oa{sa{sv}}}")
3449
def GetManagedObjects(self):
3450
"""D-Bus method"""
3451
return dbus.Dictionary(
3452
{client.dbus_object_path:
3453
dbus.Dictionary(
3454
{interface: client.GetAll(interface)
3455
for interface in
3456
client._get_all_interface_names()})
3457
for client in tcp_server.clients.values()})
3458
3459
def client_added_signal(self, client):
3460
"""Send the new standard signal and the old signal"""
3461
if use_dbus:
3462
# New standard signal
3463
self.InterfacesAdded(
3464
client.dbus_object_path,
3465
dbus.Dictionary(
3466
{interface: client.GetAll(interface)
3467
for interface in
3468
client._get_all_interface_names()}))
3469
# Old signal
3470
self.ClientAdded(client.dbus_object_path)
3471
3472
def client_removed_signal(self, client):
3473
"""Send the new standard signal and the old signal"""
3474
if use_dbus:
3475
# New standard signal
3476
self.InterfacesRemoved(
3477
client.dbus_object_path,
3478
client._get_all_interface_names())
3479
# Old signal
3480
self.ClientRemoved(client.dbus_object_path,
3481
client.name)
3482
1881
3483
1882
mandos_dbus_service = MandosDBusService()
3484
3485
# Save modules to variables to exempt the modules from being
3486
# unloaded before the function registered with atexit() is run.
3487
mp = multiprocessing
3488
wn = wnull
3489
1883
3490
1884
def cleanup():
3491
1885
"Cleanup function; run on exit"
3492
if zeroconf:
3493
service.cleanup()
3494
3495
mp.active_children()
3496
wn.close()
3497
if not (tcp_server.clients or client_settings):
3498
return
3499
3500
# Store client before exiting. Secrets are encrypted with key
3501
# based on what config file has. If config file is
3502
# removed/edited, old secret will thus be unrecovable.
3503
clients = {}
3504
with PGPEngine() as pgp:
3505
for client in tcp_server.clients.values():
3506
key = client_settings[client.name]["secret"]
3507
client.encrypted_secret = pgp.encrypt(client.secret,
3508
key)
3509
client_dict = {}
3510
3511
# A list of attributes that can not be pickled
3512
# + secret.
3513
exclude = {"bus", "changedstate", "secret",
3514
"checker", "server_settings"}
3515
for name, typ in inspect.getmembers(dbus.service
3516
.Object):
3517
exclude.add(name)
3518
3519
client_dict["encrypted_secret"] = (client
3520
.encrypted_secret)
3521
for attr in client.client_structure:
3522
if attr not in exclude:
3523
client_dict[attr] = getattr(client, attr)
3524
3525
clients[client.name] = client_dict
3526
del client_settings[client.name]["secret"]
3527
3528
try:
3529
with tempfile.NamedTemporaryFile(
3530
mode='wb',
3531
suffix=".pickle",
3532
prefix='clients-',
3533
dir=os.path.dirname(stored_state_path),
3534
delete=False) as stored_state:
3535
pickle.dump((clients, client_settings), stored_state,
3536
protocol=2)
3537
tempname = stored_state.name
3538
os.rename(tempname, stored_state_path)
3539
except (IOError, OSError) as e:
3540
if not debug:
3541
try:
3542
os.remove(tempname)
3543
except NameError:
3544
pass
3545
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3546
logger.warning("Could not save persistent state: {}"
3547
.format(os.strerror(e.errno)))
3548
else:
3549
logger.warning("Could not save persistent state:",
3550
exc_info=e)
3551
raise
3552
3553
# Delete all clients, and settings from config
1886
service.cleanup()
1887
3554
1888
while tcp_server.clients:
3555
name, client = tcp_server.clients.popitem()
1889
client = tcp_server.clients.pop()
3556
1890
if use_dbus:
3557
1891
client.remove_from_connection()
3558
# Don't signal the disabling
1892
client.disable_hook = None
1893
# Don't signal anything except ClientRemoved
3559
1894
client.disable(quiet=True)
3560
# Emit D-Bus signal for removal
3561
1895
if use_dbus:
3562
mandos_dbus_service.client_removed_signal(client)
3563
client_settings.clear()
3564
1896
# Emit D-Bus signal
1897
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1898
client.name)
1899
3565
1900
atexit.register(cleanup)
3566
3567
for client in tcp_server.clients.values():
1901
1902
for client in tcp_server.clients:
3568
1903
if use_dbus:
3569
# Emit D-Bus signal for adding
3570
mandos_dbus_service.client_added_signal(client)
3571
# Need to initiate checking of clients
3572
if client.enabled:
3573
client.init_checker()
3574
1904
# Emit D-Bus signal
1905
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1906
client.enable()
1907
3575
1908
tcp_server.enable()
3576
1909
tcp_server.server_activate()
3577
1910
3578
1911
# Find out what port we got
3579
if zeroconf:
3580
service.port = tcp_server.socket.getsockname()[1]
1912
service.port = tcp_server.socket.getsockname()[1]
3581
1913
if use_ipv6:
3582
logger.info("Now listening on address %r, port %d,"
3583
" flowinfo %d, scope_id %d",
3584
*tcp_server.socket.getsockname())
1914
logger.info(u"Now listening on address %r, port %d,"
1915
" flowinfo %d, scope_id %d"
1916
% tcp_server.socket.getsockname())
3585
1917
else: # IPv4
3586
logger.info("Now listening on address %r, port %d",
3587
*tcp_server.socket.getsockname())
3588
3589
# service.interface = tcp_server.socket.getsockname()[3]
3590
1918
logger.info(u"Now listening on address %r, port %d"
1919
% tcp_server.socket.getsockname())
1920
1921
#service.interface = tcp_server.socket.getsockname()[3]
1922
3591
1923
try:
3592
if zeroconf:
3593
# From the Avahi example code
3594
try:
3595
service.activate()
3596
except dbus.exceptions.DBusException as error:
3597
logger.critical("D-Bus Exception", exc_info=error)
3598
cleanup()
3599
sys.exit(1)
3600
# End of Avahi example code
3601
3602
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3603
lambda *args, **kwargs:
3604
(tcp_server.handle_request
3605
(*args[2:], **kwargs) or True))
3606
3607
logger.debug("Starting main loop")
1924
# From the Avahi example code
1925
try:
1926
service.activate()
1927
except dbus.exceptions.DBusException, error:
1928
logger.critical(u"DBusException: %s", error)
1929
cleanup()
1930
sys.exit(1)
1931
# End of Avahi example code
1932
1933
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1934
lambda *args, **kwargs:
1935
(tcp_server.handle_request
1936
(*args[2:], **kwargs) or True))
1937
1938
logger.debug(u"Starting main loop")
3608
1939
main_loop.run()
3609
except AvahiError as error:
3610
logger.critical("Avahi Error", exc_info=error)
1940
except AvahiError, error:
1941
logger.critical(u"AvahiError: %s", error)
3611
1942
cleanup()
3612
1943
sys.exit(1)
3613
1944
except KeyboardInterrupt:
3614
1945
if debug:
3615
print("", file=sys.stderr)
3616
logger.debug("Server received KeyboardInterrupt")
3617
logger.debug("Server exiting")
1946
print >> sys.stderr
1947
logger.debug(u"Server received KeyboardInterrupt")
1948
logger.debug(u"Server exiting")
3618
1949
# Must run before the D-Bus bus name gets deregistered
3619
1950
cleanup()
3620
1951
3621
3622
1952
if __name__ == '__main__':
3623
1953
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0