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- Committer: Teddy Hogeborn
- Date: 2019-08-05 14:31:51 UTC
- Revision ID: teddy@recompile.se-20190805143151-lt5d97wqif3t8250
Client: Debian package fix: Make uninstall when using dracut(8) work
Use the same logic to rebuild the initramfs image when uninstalling as
when installing the package.
* debian/mandos-client.postrm (update_initramfs): Use the same logic
as the update_initramfs function in debian/mandos-client.postinst.
Use the same logic to rebuild the initramfs image when uninstalling as
when installing the package.
* debian/mandos-client.postrm (update_initramfs): Use the same logic
as the update_initramfs function in debian/mandos-client.postinst.
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
from future_builtins import *
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
38
42
39
import SocketServer as socketserver
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
40
47
import socket
41
48
import argparse
42
49
import datetime
43
50
import errno
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
51
55
import sys
52
56
import re
53
57
import os
62
66
import struct
63
67
import fcntl
64
68
import functools
65
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
66
73
import multiprocessing
67
74
import types
68
75
import binascii
69
76
import tempfile
70
77
import itertools
78
import collections
79
import codecs
71
80
72
81
import dbus
73
82
import dbus.service
74
import gobject
75
import avahi
83
import gi
84
from gi.repository import GLib
76
85
from dbus.mainloop.glib import DBusGMainLoop
77
86
import ctypes
78
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import ctypes.util
79
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import xml.dom.minidom
80
89
import inspect
81
import GnuPGInterface
82
90
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# Try to find the value of SO_BINDTODEVICE:
83
92
try:
93
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
94
# newer, and it is also the most natural place for it:
84
95
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
96
except AttributeError:
86
97
try:
98
# This is where SO_BINDTODEVICE was up to and including Python
99
# 2.6, and also 3.2:
87
100
from IN import SO_BINDTODEVICE
88
101
except ImportError:
89
SO_BINDTODEVICE = None
90
91
version = "1.5.3"
102
# In Python 2.7 it seems to have been removed entirely.
103
# Try running the C preprocessor:
104
try:
105
cc = subprocess.Popen(["cc", "--language=c", "-E",
106
"/dev/stdin"],
107
stdin=subprocess.PIPE,
108
stdout=subprocess.PIPE)
109
stdout = cc.communicate(
110
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
111
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
112
except (OSError, ValueError, IndexError):
113
# No value found
114
SO_BINDTODEVICE = None
115
116
if sys.version_info.major == 2:
117
str = unicode
118
119
if sys.version_info < (3, 2):
120
configparser.Configparser = configparser.SafeConfigParser
121
122
version = "1.8.6"
92
123
stored_state_file = "clients.pickle"
93
124
94
125
logger = logging.getLogger()
95
syslogger = (logging.handlers.SysLogHandler
96
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
97
address = str("/dev/log")))
126
syslogger = None
98
127
99
128
try:
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
102
.if_nametoindex)
129
if_nametoindex = ctypes.cdll.LoadLibrary(
130
ctypes.util.find_library("c")).if_nametoindex
103
131
except (OSError, AttributeError):
132
104
133
def if_nametoindex(interface):
105
134
"Get an interface index the hard way, i.e. using fcntl()"
106
135
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
107
136
with contextlib.closing(socket.socket()) as s:
108
137
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
109
struct.pack(str("16s16x"),
110
interface))
111
interface_index = struct.unpack(str("I"),
112
ifreq[16:20])[0]
138
struct.pack(b"16s16x", interface))
139
interface_index = struct.unpack("I", ifreq[16:20])[0]
113
140
return interface_index
114
141
115
142
143
def copy_function(func):
144
"""Make a copy of a function"""
145
if sys.version_info.major == 2:
146
return types.FunctionType(func.func_code,
147
func.func_globals,
148
func.func_name,
149
func.func_defaults,
150
func.func_closure)
151
else:
152
return types.FunctionType(func.__code__,
153
func.__globals__,
154
func.__name__,
155
func.__defaults__,
156
func.__closure__)
157
158
116
159
def initlogger(debug, level=logging.WARNING):
117
160
"""init logger and add loglevel"""
118
161
162
global syslogger
163
syslogger = (logging.handlers.SysLogHandler(
164
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
165
address="/dev/log"))
119
166
syslogger.setFormatter(logging.Formatter
120
167
('Mandos [%(process)d]: %(levelname)s:'
121
168
' %(message)s'))
122
169
logger.addHandler(syslogger)
123
170
124
171
if debug:
125
172
console = logging.StreamHandler()
126
173
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
138
185
139
186
class PGPEngine(object):
140
187
"""A simple class for OpenPGP symmetric encryption & decryption"""
188
141
189
def __init__(self):
142
self.gnupg = GnuPGInterface.GnuPG()
143
190
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
144
self.gnupg = GnuPGInterface.GnuPG()
145
self.gnupg.options.meta_interactive = False
146
self.gnupg.options.homedir = self.tempdir
147
self.gnupg.options.extra_args.extend(['--force-mdc',
148
'--quiet',
149
'--no-use-agent'])
150
191
self.gpg = "gpg"
192
try:
193
output = subprocess.check_output(["gpgconf"])
194
for line in output.splitlines():
195
name, text, path = line.split(b":")
196
if name == "gpg":
197
self.gpg = path
198
break
199
except OSError as e:
200
if e.errno != errno.ENOENT:
201
raise
202
self.gnupgargs = ['--batch',
203
'--homedir', self.tempdir,
204
'--force-mdc',
205
'--quiet']
206
# Only GPG version 1 has the --no-use-agent option.
207
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
208
self.gnupgargs.append("--no-use-agent")
209
151
210
def __enter__(self):
152
211
return self
153
154
def __exit__ (self, exc_type, exc_value, traceback):
212
213
def __exit__(self, exc_type, exc_value, traceback):
155
214
self._cleanup()
156
215
return False
157
216
158
217
def __del__(self):
159
218
self._cleanup()
160
219
161
220
def _cleanup(self):
162
221
if self.tempdir is not None:
163
222
# Delete contents of tempdir
164
223
for root, dirs, files in os.walk(self.tempdir,
165
topdown = False):
224
topdown=False):
166
225
for filename in files:
167
226
os.remove(os.path.join(root, filename))
168
227
for dirname in dirs:
170
229
# Remove tempdir
171
230
os.rmdir(self.tempdir)
172
231
self.tempdir = None
173
232
174
233
def password_encode(self, password):
175
234
# Passphrase can not be empty and can not contain newlines or
176
235
# NUL bytes. So we prefix it and hex encode it.
177
return b"mandos" + binascii.hexlify(password)
178
236
encoded = b"mandos" + binascii.hexlify(password)
237
if len(encoded) > 2048:
238
# GnuPG can't handle long passwords, so encode differently
239
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
240
.replace(b"\n", b"\\n")
241
.replace(b"\0", b"\\x00"))
242
return encoded
243
179
244
def encrypt(self, data, password):
180
self.gnupg.passphrase = self.password_encode(password)
181
with open(os.devnull, "w") as devnull:
182
try:
183
proc = self.gnupg.run(['--symmetric'],
184
create_fhs=['stdin', 'stdout'],
185
attach_fhs={'stderr': devnull})
186
with contextlib.closing(proc.handles['stdin']) as f:
187
f.write(data)
188
with contextlib.closing(proc.handles['stdout']) as f:
189
ciphertext = f.read()
190
proc.wait()
191
except IOError as e:
192
raise PGPError(e)
193
self.gnupg.passphrase = None
245
passphrase = self.password_encode(password)
246
with tempfile.NamedTemporaryFile(
247
dir=self.tempdir) as passfile:
248
passfile.write(passphrase)
249
passfile.flush()
250
proc = subprocess.Popen([self.gpg, '--symmetric',
251
'--passphrase-file',
252
passfile.name]
253
+ self.gnupgargs,
254
stdin=subprocess.PIPE,
255
stdout=subprocess.PIPE,
256
stderr=subprocess.PIPE)
257
ciphertext, err = proc.communicate(input=data)
258
if proc.returncode != 0:
259
raise PGPError(err)
194
260
return ciphertext
195
261
196
262
def decrypt(self, data, password):
197
self.gnupg.passphrase = self.password_encode(password)
198
with open(os.devnull, "w") as devnull:
199
try:
200
proc = self.gnupg.run(['--decrypt'],
201
create_fhs=['stdin', 'stdout'],
202
attach_fhs={'stderr': devnull})
203
with contextlib.closing(proc.handles['stdin']) as f:
204
f.write(data)
205
with contextlib.closing(proc.handles['stdout']) as f:
206
decrypted_plaintext = f.read()
207
proc.wait()
208
except IOError as e:
209
raise PGPError(e)
210
self.gnupg.passphrase = None
263
passphrase = self.password_encode(password)
264
with tempfile.NamedTemporaryFile(
265
dir=self.tempdir) as passfile:
266
passfile.write(passphrase)
267
passfile.flush()
268
proc = subprocess.Popen([self.gpg, '--decrypt',
269
'--passphrase-file',
270
passfile.name]
271
+ self.gnupgargs,
272
stdin=subprocess.PIPE,
273
stdout=subprocess.PIPE,
274
stderr=subprocess.PIPE)
275
decrypted_plaintext, err = proc.communicate(input=data)
276
if proc.returncode != 0:
277
raise PGPError(err)
211
278
return decrypted_plaintext
212
279
213
280
281
# Pretend that we have an Avahi module
282
class avahi(object):
283
"""This isn't so much a class as it is a module-like namespace."""
284
IF_UNSPEC = -1 # avahi-common/address.h
285
PROTO_UNSPEC = -1 # avahi-common/address.h
286
PROTO_INET = 0 # avahi-common/address.h
287
PROTO_INET6 = 1 # avahi-common/address.h
288
DBUS_NAME = "org.freedesktop.Avahi"
289
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
290
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
291
DBUS_PATH_SERVER = "/"
292
293
@staticmethod
294
def string_array_to_txt_array(t):
295
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
296
for s in t), signature="ay")
297
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
298
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
299
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
300
SERVER_INVALID = 0 # avahi-common/defs.h
301
SERVER_REGISTERING = 1 # avahi-common/defs.h
302
SERVER_RUNNING = 2 # avahi-common/defs.h
303
SERVER_COLLISION = 3 # avahi-common/defs.h
304
SERVER_FAILURE = 4 # avahi-common/defs.h
305
306
214
307
class AvahiError(Exception):
215
308
def __init__(self, value, *args, **kwargs):
216
309
self.value = value
217
super(AvahiError, self).__init__(value, *args, **kwargs)
218
def __unicode__(self):
219
return unicode(repr(self.value))
310
return super(AvahiError, self).__init__(value, *args,
311
**kwargs)
312
220
313
221
314
class AvahiServiceError(AvahiError):
222
315
pass
223
316
317
224
318
class AvahiGroupError(AvahiError):
225
319
pass
226
320
227
321
228
322
class AvahiService(object):
229
323
"""An Avahi (Zeroconf) service.
230
324
231
325
Attributes:
232
326
interface: integer; avahi.IF_UNSPEC or an interface index.
233
327
Used to optionally bind to the specified interface.
234
328
name: string; Example: 'Mandos'
235
329
type: string; Example: '_mandos._tcp'.
236
See <http://www.dns-sd.org/ServiceTypes.html>
330
See <https://www.iana.org/assignments/service-names-port-numbers>
237
331
port: integer; what port to announce
238
332
TXT: list of strings; TXT record for the service
239
333
domain: string; Domain to publish on, default to .local if empty.
245
339
server: D-Bus Server
246
340
bus: dbus.SystemBus()
247
341
"""
248
249
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
250
servicetype = None, port = None, TXT = None,
251
domain = "", host = "", max_renames = 32768,
252
protocol = avahi.PROTO_UNSPEC, bus = None):
342
343
def __init__(self,
344
interface=avahi.IF_UNSPEC,
345
name=None,
346
servicetype=None,
347
port=None,
348
TXT=None,
349
domain="",
350
host="",
351
max_renames=32768,
352
protocol=avahi.PROTO_UNSPEC,
353
bus=None):
253
354
self.interface = interface
254
355
self.name = name
255
356
self.type = servicetype
264
365
self.server = None
265
366
self.bus = bus
266
367
self.entry_group_state_changed_match = None
267
268
def rename(self):
368
369
def rename(self, remove=True):
269
370
"""Derived from the Avahi example code"""
270
371
if self.rename_count >= self.max_renames:
271
372
logger.critical("No suitable Zeroconf service name found"
272
373
" after %i retries, exiting.",
273
374
self.rename_count)
274
375
raise AvahiServiceError("Too many renames")
275
self.name = unicode(self.server
276
.GetAlternativeServiceName(self.name))
376
self.name = str(
377
self.server.GetAlternativeServiceName(self.name))
378
self.rename_count += 1
277
379
logger.info("Changing Zeroconf service name to %r ...",
278
380
self.name)
279
self.remove()
381
if remove:
382
self.remove()
280
383
try:
281
384
self.add()
282
385
except dbus.exceptions.DBusException as error:
283
logger.critical("D-Bus Exception", exc_info=error)
284
self.cleanup()
285
os._exit(1)
286
self.rename_count += 1
287
386
if (error.get_dbus_name()
387
== "org.freedesktop.Avahi.CollisionError"):
388
logger.info("Local Zeroconf service name collision.")
389
return self.rename(remove=False)
390
else:
391
logger.critical("D-Bus Exception", exc_info=error)
392
self.cleanup()
393
os._exit(1)
394
288
395
def remove(self):
289
396
"""Derived from the Avahi example code"""
290
397
if self.entry_group_state_changed_match is not None:
292
399
self.entry_group_state_changed_match = None
293
400
if self.group is not None:
294
401
self.group.Reset()
295
402
296
403
def add(self):
297
404
"""Derived from the Avahi example code"""
298
405
self.remove()
315
422
dbus.UInt16(self.port),
316
423
avahi.string_array_to_txt_array(self.TXT))
317
424
self.group.Commit()
318
425
319
426
def entry_group_state_changed(self, state, error):
320
427
"""Derived from the Avahi example code"""
321
428
logger.debug("Avahi entry group state change: %i", state)
322
429
323
430
if state == avahi.ENTRY_GROUP_ESTABLISHED:
324
431
logger.debug("Zeroconf service established.")
325
432
elif state == avahi.ENTRY_GROUP_COLLISION:
327
434
self.rename()
328
435
elif state == avahi.ENTRY_GROUP_FAILURE:
329
436
logger.critical("Avahi: Error in group state changed %s",
330
unicode(error))
331
raise AvahiGroupError("State changed: {0!s}"
332
.format(error))
333
437
str(error))
438
raise AvahiGroupError("State changed: {!s}".format(error))
439
334
440
def cleanup(self):
335
441
"""Derived from the Avahi example code"""
336
442
if self.group is not None:
341
447
pass
342
448
self.group = None
343
449
self.remove()
344
450
345
451
def server_state_changed(self, state, error=None):
346
452
"""Derived from the Avahi example code"""
347
453
logger.debug("Avahi server state change: %i", state)
348
bad_states = { avahi.SERVER_INVALID:
349
"Zeroconf server invalid",
350
avahi.SERVER_REGISTERING: None,
351
avahi.SERVER_COLLISION:
352
"Zeroconf server name collision",
353
avahi.SERVER_FAILURE:
354
"Zeroconf server failure" }
454
bad_states = {
455
avahi.SERVER_INVALID: "Zeroconf server invalid",
456
avahi.SERVER_REGISTERING: None,
457
avahi.SERVER_COLLISION: "Zeroconf server name collision",
458
avahi.SERVER_FAILURE: "Zeroconf server failure",
459
}
355
460
if state in bad_states:
356
461
if bad_states[state] is not None:
357
462
if error is None:
360
465
logger.error(bad_states[state] + ": %r", error)
361
466
self.cleanup()
362
467
elif state == avahi.SERVER_RUNNING:
363
self.add()
468
try:
469
self.add()
470
except dbus.exceptions.DBusException as error:
471
if (error.get_dbus_name()
472
== "org.freedesktop.Avahi.CollisionError"):
473
logger.info("Local Zeroconf service name"
474
" collision.")
475
return self.rename(remove=False)
476
else:
477
logger.critical("D-Bus Exception", exc_info=error)
478
self.cleanup()
479
os._exit(1)
364
480
else:
365
481
if error is None:
366
482
logger.debug("Unknown state: %r", state)
367
483
else:
368
484
logger.debug("Unknown state: %r: %r", state, error)
369
485
370
486
def activate(self):
371
487
"""Derived from the Avahi example code"""
372
488
if self.server is None:
376
492
follow_name_owner_changes=True),
377
493
avahi.DBUS_INTERFACE_SERVER)
378
494
self.server.connect_to_signal("StateChanged",
379
self.server_state_changed)
495
self.server_state_changed)
380
496
self.server_state_changed(self.server.GetState())
381
497
382
498
383
499
class AvahiServiceToSyslog(AvahiService):
384
def rename(self):
500
def rename(self, *args, **kwargs):
385
501
"""Add the new name to the syslog messages"""
386
ret = AvahiService.rename(self)
387
syslogger.setFormatter(logging.Formatter
388
('Mandos ({0}) [%(process)d]:'
389
' %(levelname)s: %(message)s'
390
.format(self.name)))
502
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
503
syslogger.setFormatter(logging.Formatter(
504
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
505
.format(self.name)))
391
506
return ret
392
507
393
508
394
def timedelta_to_milliseconds(td):
395
"Convert a datetime.timedelta() to milliseconds"
396
return ((td.days * 24 * 60 * 60 * 1000)
397
+ (td.seconds * 1000)
398
+ (td.microseconds // 1000))
509
# Pretend that we have a GnuTLS module
510
class gnutls(object):
511
"""This isn't so much a class as it is a module-like namespace."""
512
513
library = ctypes.util.find_library("gnutls")
514
if library is None:
515
library = ctypes.util.find_library("gnutls-deb0")
516
_library = ctypes.cdll.LoadLibrary(library)
517
del library
518
519
# Unless otherwise indicated, the constants and types below are
520
# all from the gnutls/gnutls.h C header file.
521
522
# Constants
523
E_SUCCESS = 0
524
E_INTERRUPTED = -52
525
E_AGAIN = -28
526
CRT_OPENPGP = 2
527
CRT_RAWPK = 3
528
CLIENT = 2
529
SHUT_RDWR = 0
530
CRD_CERTIFICATE = 1
531
E_NO_CERTIFICATE_FOUND = -49
532
X509_FMT_DER = 0
533
NO_TICKETS = 1<<10
534
ENABLE_RAWPK = 1<<18
535
CTYPE_PEERS = 3
536
KEYID_USE_SHA256 = 1 # gnutls/x509.h
537
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
538
539
# Types
540
class session_int(ctypes.Structure):
541
_fields_ = []
542
session_t = ctypes.POINTER(session_int)
543
544
class certificate_credentials_st(ctypes.Structure):
545
_fields_ = []
546
certificate_credentials_t = ctypes.POINTER(
547
certificate_credentials_st)
548
certificate_type_t = ctypes.c_int
549
550
class datum_t(ctypes.Structure):
551
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
552
('size', ctypes.c_uint)]
553
554
class openpgp_crt_int(ctypes.Structure):
555
_fields_ = []
556
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
557
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
558
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
559
credentials_type_t = ctypes.c_int
560
transport_ptr_t = ctypes.c_void_p
561
close_request_t = ctypes.c_int
562
563
# Exceptions
564
class Error(Exception):
565
def __init__(self, message=None, code=None, args=()):
566
# Default usage is by a message string, but if a return
567
# code is passed, convert it to a string with
568
# gnutls.strerror()
569
self.code = code
570
if message is None and code is not None:
571
message = gnutls.strerror(code)
572
return super(gnutls.Error, self).__init__(
573
message, *args)
574
575
class CertificateSecurityError(Error):
576
pass
577
578
# Classes
579
class Credentials(object):
580
def __init__(self):
581
self._c_object = gnutls.certificate_credentials_t()
582
gnutls.certificate_allocate_credentials(
583
ctypes.byref(self._c_object))
584
self.type = gnutls.CRD_CERTIFICATE
585
586
def __del__(self):
587
gnutls.certificate_free_credentials(self._c_object)
588
589
class ClientSession(object):
590
def __init__(self, socket, credentials=None):
591
self._c_object = gnutls.session_t()
592
gnutls_flags = gnutls.CLIENT
593
if gnutls.check_version(b"3.5.6"):
594
gnutls_flags |= gnutls.NO_TICKETS
595
if gnutls.has_rawpk:
596
gnutls_flags |= gnutls.ENABLE_RAWPK
597
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
598
del gnutls_flags
599
gnutls.set_default_priority(self._c_object)
600
gnutls.transport_set_ptr(self._c_object, socket.fileno())
601
gnutls.handshake_set_private_extensions(self._c_object,
602
True)
603
self.socket = socket
604
if credentials is None:
605
credentials = gnutls.Credentials()
606
gnutls.credentials_set(self._c_object, credentials.type,
607
ctypes.cast(credentials._c_object,
608
ctypes.c_void_p))
609
self.credentials = credentials
610
611
def __del__(self):
612
gnutls.deinit(self._c_object)
613
614
def handshake(self):
615
return gnutls.handshake(self._c_object)
616
617
def send(self, data):
618
data = bytes(data)
619
data_len = len(data)
620
while data_len > 0:
621
data_len -= gnutls.record_send(self._c_object,
622
data[-data_len:],
623
data_len)
624
625
def bye(self):
626
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
627
628
# Error handling functions
629
def _error_code(result):
630
"""A function to raise exceptions on errors, suitable
631
for the 'restype' attribute on ctypes functions"""
632
if result >= 0:
633
return result
634
if result == gnutls.E_NO_CERTIFICATE_FOUND:
635
raise gnutls.CertificateSecurityError(code=result)
636
raise gnutls.Error(code=result)
637
638
def _retry_on_error(result, func, arguments):
639
"""A function to retry on some errors, suitable
640
for the 'errcheck' attribute on ctypes functions"""
641
while result < 0:
642
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
643
return _error_code(result)
644
result = func(*arguments)
645
return result
646
647
# Unless otherwise indicated, the function declarations below are
648
# all from the gnutls/gnutls.h C header file.
649
650
# Functions
651
priority_set_direct = _library.gnutls_priority_set_direct
652
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
653
ctypes.POINTER(ctypes.c_char_p)]
654
priority_set_direct.restype = _error_code
655
656
init = _library.gnutls_init
657
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
658
init.restype = _error_code
659
660
set_default_priority = _library.gnutls_set_default_priority
661
set_default_priority.argtypes = [session_t]
662
set_default_priority.restype = _error_code
663
664
record_send = _library.gnutls_record_send
665
record_send.argtypes = [session_t, ctypes.c_void_p,
666
ctypes.c_size_t]
667
record_send.restype = ctypes.c_ssize_t
668
record_send.errcheck = _retry_on_error
669
670
certificate_allocate_credentials = (
671
_library.gnutls_certificate_allocate_credentials)
672
certificate_allocate_credentials.argtypes = [
673
ctypes.POINTER(certificate_credentials_t)]
674
certificate_allocate_credentials.restype = _error_code
675
676
certificate_free_credentials = (
677
_library.gnutls_certificate_free_credentials)
678
certificate_free_credentials.argtypes = [
679
certificate_credentials_t]
680
certificate_free_credentials.restype = None
681
682
handshake_set_private_extensions = (
683
_library.gnutls_handshake_set_private_extensions)
684
handshake_set_private_extensions.argtypes = [session_t,
685
ctypes.c_int]
686
handshake_set_private_extensions.restype = None
687
688
credentials_set = _library.gnutls_credentials_set
689
credentials_set.argtypes = [session_t, credentials_type_t,
690
ctypes.c_void_p]
691
credentials_set.restype = _error_code
692
693
strerror = _library.gnutls_strerror
694
strerror.argtypes = [ctypes.c_int]
695
strerror.restype = ctypes.c_char_p
696
697
certificate_type_get = _library.gnutls_certificate_type_get
698
certificate_type_get.argtypes = [session_t]
699
certificate_type_get.restype = _error_code
700
701
certificate_get_peers = _library.gnutls_certificate_get_peers
702
certificate_get_peers.argtypes = [session_t,
703
ctypes.POINTER(ctypes.c_uint)]
704
certificate_get_peers.restype = ctypes.POINTER(datum_t)
705
706
global_set_log_level = _library.gnutls_global_set_log_level
707
global_set_log_level.argtypes = [ctypes.c_int]
708
global_set_log_level.restype = None
709
710
global_set_log_function = _library.gnutls_global_set_log_function
711
global_set_log_function.argtypes = [log_func]
712
global_set_log_function.restype = None
713
714
deinit = _library.gnutls_deinit
715
deinit.argtypes = [session_t]
716
deinit.restype = None
717
718
handshake = _library.gnutls_handshake
719
handshake.argtypes = [session_t]
720
handshake.restype = _error_code
721
handshake.errcheck = _retry_on_error
722
723
transport_set_ptr = _library.gnutls_transport_set_ptr
724
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
725
transport_set_ptr.restype = None
726
727
bye = _library.gnutls_bye
728
bye.argtypes = [session_t, close_request_t]
729
bye.restype = _error_code
730
bye.errcheck = _retry_on_error
731
732
check_version = _library.gnutls_check_version
733
check_version.argtypes = [ctypes.c_char_p]
734
check_version.restype = ctypes.c_char_p
735
736
_need_version = b"3.3.0"
737
if check_version(_need_version) is None:
738
raise self.Error("Needs GnuTLS {} or later"
739
.format(_need_version))
740
741
_tls_rawpk_version = b"3.6.6"
742
has_rawpk = bool(check_version(_tls_rawpk_version))
743
744
if has_rawpk:
745
# Types
746
class pubkey_st(ctypes.Structure):
747
_fields = []
748
pubkey_t = ctypes.POINTER(pubkey_st)
749
750
x509_crt_fmt_t = ctypes.c_int
751
752
# All the function declarations below are from gnutls/abstract.h
753
pubkey_init = _library.gnutls_pubkey_init
754
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
755
pubkey_init.restype = _error_code
756
757
pubkey_import = _library.gnutls_pubkey_import
758
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
759
x509_crt_fmt_t]
760
pubkey_import.restype = _error_code
761
762
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
763
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
764
ctypes.POINTER(ctypes.c_ubyte),
765
ctypes.POINTER(ctypes.c_size_t)]
766
pubkey_get_key_id.restype = _error_code
767
768
pubkey_deinit = _library.gnutls_pubkey_deinit
769
pubkey_deinit.argtypes = [pubkey_t]
770
pubkey_deinit.restype = None
771
else:
772
# All the function declarations below are from gnutls/openpgp.h
773
774
openpgp_crt_init = _library.gnutls_openpgp_crt_init
775
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
776
openpgp_crt_init.restype = _error_code
777
778
openpgp_crt_import = _library.gnutls_openpgp_crt_import
779
openpgp_crt_import.argtypes = [openpgp_crt_t,
780
ctypes.POINTER(datum_t),
781
openpgp_crt_fmt_t]
782
openpgp_crt_import.restype = _error_code
783
784
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
785
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
786
ctypes.POINTER(ctypes.c_uint)]
787
openpgp_crt_verify_self.restype = _error_code
788
789
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
790
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
791
openpgp_crt_deinit.restype = None
792
793
openpgp_crt_get_fingerprint = (
794
_library.gnutls_openpgp_crt_get_fingerprint)
795
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
796
ctypes.c_void_p,
797
ctypes.POINTER(
798
ctypes.c_size_t)]
799
openpgp_crt_get_fingerprint.restype = _error_code
800
801
if check_version(b"3.6.4"):
802
certificate_type_get2 = _library.gnutls_certificate_type_get2
803
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
804
certificate_type_get2.restype = _error_code
805
806
# Remove non-public functions
807
del _error_code, _retry_on_error
808
809
810
def call_pipe(connection, # : multiprocessing.Connection
811
func, *args, **kwargs):
812
"""This function is meant to be called by multiprocessing.Process
813
814
This function runs func(*args, **kwargs), and writes the resulting
815
return value on the provided multiprocessing.Connection.
816
"""
817
connection.send(func(*args, **kwargs))
818
connection.close()
399
819
400
820
401
821
class Client(object):
402
822
"""A representation of a client host served by this server.
403
823
404
824
Attributes:
405
825
approved: bool(); 'None' if not yet approved/disapproved
406
826
approval_delay: datetime.timedelta(); Time to wait for approval
407
827
approval_duration: datetime.timedelta(); Duration of one approval
408
checker: subprocess.Popen(); a running checker process used
409
to see if the client lives.
410
'None' if no process is running.
411
checker_callback_tag: a gobject event source tag, or None
828
checker: multiprocessing.Process(); a running checker process used
829
to see if the client lives. 'None' if no process is
830
running.
831
checker_callback_tag: a GLib event source tag, or None
412
832
checker_command: string; External command which is run to check
413
833
if client lives. %() expansions are done at
414
834
runtime with vars(self) as dict, so that for
415
835
instance %(name)s can be used in the command.
416
checker_initiator_tag: a gobject event source tag, or None
836
checker_initiator_tag: a GLib event source tag, or None
417
837
created: datetime.datetime(); (UTC) object creation
418
838
client_structure: Object describing what attributes a client has
419
839
and is used for storing the client at exit
420
840
current_checker_command: string; current running checker_command
421
disable_initiator_tag: a gobject event source tag, or None
841
disable_initiator_tag: a GLib event source tag, or None
422
842
enabled: bool()
423
843
fingerprint: string (40 or 32 hexadecimal digits); used to
424
uniquely identify the client
844
uniquely identify an OpenPGP client
845
key_id: string (64 hexadecimal digits); used to uniquely identify
846
a client using raw public keys
425
847
host: string; available for use by the checker command
426
848
interval: datetime.timedelta(); How often to start a new checker
427
849
last_approval_request: datetime.datetime(); (UTC) or None
429
851
last_checker_status: integer between 0 and 255 reflecting exit
430
852
status of last checker. -1 reflects crashed
431
853
checker, -2 means no checker completed yet.
854
last_checker_signal: The signal which killed the last checker, if
855
last_checker_status is -1
432
856
last_enabled: datetime.datetime(); (UTC) or None
433
857
name: string; from the config file, used in log messages and
434
858
D-Bus identifiers
439
863
runtime_expansions: Allowed attributes for runtime expansion.
440
864
expires: datetime.datetime(); time (UTC) when a client will be
441
865
disabled, or None
866
server_settings: The server_settings dict from main()
442
867
"""
443
868
444
869
runtime_expansions = ("approval_delay", "approval_duration",
445
"created", "enabled", "expires",
870
"created", "enabled", "expires", "key_id",
446
871
"fingerprint", "host", "interval",
447
872
"last_approval_request", "last_checked_ok",
448
873
"last_enabled", "name", "timeout")
449
client_defaults = { "timeout": "5m",
450
"extended_timeout": "15m",
451
"interval": "2m",
452
"checker": "fping -q -- %%(host)s",
453
"host": "",
454
"approval_delay": "0s",
455
"approval_duration": "1s",
456
"approved_by_default": "True",
457
"enabled": "True",
458
}
459
460
def timeout_milliseconds(self):
461
"Return the 'timeout' attribute in milliseconds"
462
return timedelta_to_milliseconds(self.timeout)
463
464
def extended_timeout_milliseconds(self):
465
"Return the 'extended_timeout' attribute in milliseconds"
466
return timedelta_to_milliseconds(self.extended_timeout)
467
468
def interval_milliseconds(self):
469
"Return the 'interval' attribute in milliseconds"
470
return timedelta_to_milliseconds(self.interval)
471
472
def approval_delay_milliseconds(self):
473
return timedelta_to_milliseconds(self.approval_delay)
474
874
client_defaults = {
875
"timeout": "PT5M",
876
"extended_timeout": "PT15M",
877
"interval": "PT2M",
878
"checker": "fping -q -- %%(host)s",
879
"host": "",
880
"approval_delay": "PT0S",
881
"approval_duration": "PT1S",
882
"approved_by_default": "True",
883
"enabled": "True",
884
}
885
475
886
@staticmethod
476
887
def config_parser(config):
477
888
"""Construct a new dict of client settings of this form:
484
895
for client_name in config.sections():
485
896
section = dict(config.items(client_name))
486
897
client = settings[client_name] = {}
487
898
488
899
client["host"] = section["host"]
489
900
# Reformat values from string types to Python types
490
901
client["approved_by_default"] = config.getboolean(
491
902
client_name, "approved_by_default")
492
903
client["enabled"] = config.getboolean(client_name,
493
904
"enabled")
494
905
906
# Uppercase and remove spaces from key_id and fingerprint
907
# for later comparison purposes with return value from the
908
# key_id() and fingerprint() functions
909
client["key_id"] = (section.get("key_id", "").upper()
910
.replace(" ", ""))
495
911
client["fingerprint"] = (section["fingerprint"].upper()
496
912
.replace(" ", ""))
497
913
if "secret" in section:
498
client["secret"] = section["secret"].decode("base64")
914
client["secret"] = codecs.decode(section["secret"]
915
.encode("utf-8"),
916
"base64")
499
917
elif "secfile" in section:
500
918
with open(os.path.expanduser(os.path.expandvars
501
919
(section["secfile"])),
502
920
"rb") as secfile:
503
921
client["secret"] = secfile.read()
504
922
else:
505
raise TypeError("No secret or secfile for section {0}"
923
raise TypeError("No secret or secfile for section {}"
506
924
.format(section))
507
925
client["timeout"] = string_to_delta(section["timeout"])
508
926
client["extended_timeout"] = string_to_delta(
516
934
client["last_approval_request"] = None
517
935
client["last_checked_ok"] = None
518
936
client["last_checker_status"] = -2
519
937
520
938
return settings
521
522
def __init__(self, settings, name = None):
939
940
def __init__(self, settings, name=None, server_settings=None):
523
941
self.name = name
942
if server_settings is None:
943
server_settings = {}
944
self.server_settings = server_settings
524
945
# adding all client settings
525
for setting, value in settings.iteritems():
946
for setting, value in settings.items():
526
947
setattr(self, setting, value)
527
948
528
949
if self.enabled:
529
950
if not hasattr(self, "last_enabled"):
530
951
self.last_enabled = datetime.datetime.utcnow()
534
955
else:
535
956
self.last_enabled = None
536
957
self.expires = None
537
958
538
959
logger.debug("Creating client %r", self.name)
539
# Uppercase and remove spaces from fingerprint for later
540
# comparison purposes with return value from the fingerprint()
541
# function
960
logger.debug(" Key ID: %s", self.key_id)
542
961
logger.debug(" Fingerprint: %s", self.fingerprint)
543
962
self.created = settings.get("created",
544
963
datetime.datetime.utcnow())
545
964
546
965
# attributes specific for this server instance
547
966
self.checker = None
548
967
self.checker_initiator_tag = None
551
970
self.current_checker_command = None
552
971
self.approved = None
553
972
self.approvals_pending = 0
554
self.changedstate = (multiprocessing_manager
555
.Condition(multiprocessing_manager
556
.Lock()))
557
self.client_structure = [attr for attr in
558
self.__dict__.iterkeys()
973
self.changedstate = multiprocessing_manager.Condition(
974
multiprocessing_manager.Lock())
975
self.client_structure = [attr
976
for attr in self.__dict__.keys()
559
977
if not attr.startswith("_")]
560
978
self.client_structure.append("client_structure")
561
562
for name, t in inspect.getmembers(type(self),
563
lambda obj:
564
isinstance(obj,
565
property)):
979
980
for name, t in inspect.getmembers(
981
type(self), lambda obj: isinstance(obj, property)):
566
982
if not name.startswith("_"):
567
983
self.client_structure.append(name)
568
984
569
985
# Send notice to process children that client state has changed
570
986
def send_changedstate(self):
571
987
with self.changedstate:
572
988
self.changedstate.notify_all()
573
989
574
990
def enable(self):
575
991
"""Start this client's checker and timeout hooks"""
576
992
if getattr(self, "enabled", False):
581
997
self.last_enabled = datetime.datetime.utcnow()
582
998
self.init_checker()
583
999
self.send_changedstate()
584
1000
585
1001
def disable(self, quiet=True):
586
1002
"""Disable this client."""
587
1003
if not getattr(self, "enabled", False):
589
1005
if not quiet:
590
1006
logger.info("Disabling client %s", self.name)
591
1007
if getattr(self, "disable_initiator_tag", None) is not None:
592
gobject.source_remove(self.disable_initiator_tag)
1008
GLib.source_remove(self.disable_initiator_tag)
593
1009
self.disable_initiator_tag = None
594
1010
self.expires = None
595
1011
if getattr(self, "checker_initiator_tag", None) is not None:
596
gobject.source_remove(self.checker_initiator_tag)
1012
GLib.source_remove(self.checker_initiator_tag)
597
1013
self.checker_initiator_tag = None
598
1014
self.stop_checker()
599
1015
self.enabled = False
600
1016
if not quiet:
601
1017
self.send_changedstate()
602
# Do not run this again if called by a gobject.timeout_add
1018
# Do not run this again if called by a GLib.timeout_add
603
1019
return False
604
1020
605
1021
def __del__(self):
606
1022
self.disable()
607
1023
608
1024
def init_checker(self):
609
1025
# Schedule a new checker to be started an 'interval' from now,
610
1026
# and every interval from then on.
611
1027
if self.checker_initiator_tag is not None:
612
gobject.source_remove(self.checker_initiator_tag)
613
self.checker_initiator_tag = (gobject.timeout_add
614
(self.interval_milliseconds(),
615
self.start_checker))
1028
GLib.source_remove(self.checker_initiator_tag)
1029
self.checker_initiator_tag = GLib.timeout_add(
1030
int(self.interval.total_seconds() * 1000),
1031
self.start_checker)
616
1032
# Schedule a disable() when 'timeout' has passed
617
1033
if self.disable_initiator_tag is not None:
618
gobject.source_remove(self.disable_initiator_tag)
619
self.disable_initiator_tag = (gobject.timeout_add
620
(self.timeout_milliseconds(),
621
self.disable))
1034
GLib.source_remove(self.disable_initiator_tag)
1035
self.disable_initiator_tag = GLib.timeout_add(
1036
int(self.timeout.total_seconds() * 1000), self.disable)
622
1037
# Also start a new checker *right now*.
623
1038
self.start_checker()
624
625
def checker_callback(self, pid, condition, command):
1039
1040
def checker_callback(self, source, condition, connection,
1041
command):
626
1042
"""The checker has completed, so take appropriate actions."""
1043
# Read return code from connection (see call_pipe)
1044
returncode = connection.recv()
1045
connection.close()
1046
self.checker.join()
627
1047
self.checker_callback_tag = None
628
1048
self.checker = None
629
if os.WIFEXITED(condition):
630
self.last_checker_status = os.WEXITSTATUS(condition)
1049
1050
if returncode >= 0:
1051
self.last_checker_status = returncode
1052
self.last_checker_signal = None
631
1053
if self.last_checker_status == 0:
632
1054
logger.info("Checker for %(name)s succeeded",
633
1055
vars(self))
634
1056
self.checked_ok()
635
1057
else:
636
logger.info("Checker for %(name)s failed",
637
vars(self))
1058
logger.info("Checker for %(name)s failed", vars(self))
638
1059
else:
639
1060
self.last_checker_status = -1
1061
self.last_checker_signal = -returncode
640
1062
logger.warning("Checker for %(name)s crashed?",
641
1063
vars(self))
642
1064
return False
1065
643
1066
def checked_ok(self):
644
1067
"""Assert that the client has been seen, alive and well."""
645
1068
self.last_checked_ok = datetime.datetime.utcnow()
646
1069
self.last_checker_status = 0
1070
self.last_checker_signal = None
647
1071
self.bump_timeout()
648
1072
649
1073
def bump_timeout(self, timeout=None):
650
1074
"""Bump up the timeout for this client."""
651
1075
if timeout is None:
652
1076
timeout = self.timeout
653
1077
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
1078
GLib.source_remove(self.disable_initiator_tag)
655
1079
self.disable_initiator_tag = None
656
1080
if getattr(self, "enabled", False):
657
self.disable_initiator_tag = (gobject.timeout_add
658
(timedelta_to_milliseconds
659
(timeout), self.disable))
1081
self.disable_initiator_tag = GLib.timeout_add(
1082
int(timeout.total_seconds() * 1000), self.disable)
660
1083
self.expires = datetime.datetime.utcnow() + timeout
661
1084
662
1085
def need_approval(self):
663
1086
self.last_approval_request = datetime.datetime.utcnow()
664
1087
665
1088
def start_checker(self):
666
1089
"""Start a new checker subprocess if one is not running.
667
1090
668
1091
If a checker already exists, leave it running and do
669
1092
nothing."""
670
1093
# The reason for not killing a running checker is that if we
675
1098
# checkers alone, the checker would have to take more time
676
1099
# than 'timeout' for the client to be disabled, which is as it
677
1100
# should be.
678
679
# If a checker exists, make sure it is not a zombie
680
try:
681
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
682
except (AttributeError, OSError) as error:
683
if (isinstance(error, OSError)
684
and error.errno != errno.ECHILD):
685
raise error
686
else:
687
if pid:
688
logger.warning("Checker was a zombie")
689
gobject.source_remove(self.checker_callback_tag)
690
self.checker_callback(pid, status,
691
self.current_checker_command)
1101
1102
if self.checker is not None and not self.checker.is_alive():
1103
logger.warning("Checker was not alive; joining")
1104
self.checker.join()
1105
self.checker = None
692
1106
# Start a new checker if needed
693
1107
if self.checker is None:
694
1108
# Escape attributes for the shell
695
escaped_attrs = dict(
696
(attr, re.escape(unicode(getattr(self, attr))))
697
for attr in
698
self.runtime_expansions)
1109
escaped_attrs = {
1110
attr: re.escape(str(getattr(self, attr)))
1111
for attr in self.runtime_expansions}
699
1112
try:
700
1113
command = self.checker_command % escaped_attrs
701
1114
except TypeError as error:
702
1115
logger.error('Could not format string "%s"',
703
self.checker_command, exc_info=error)
704
return True # Try again later
1116
self.checker_command,
1117
exc_info=error)
1118
return True # Try again later
705
1119
self.current_checker_command = command
706
try:
707
logger.info("Starting checker %r for %s",
708
command, self.name)
709
# We don't need to redirect stdout and stderr, since
710
# in normal mode, that is already done by daemon(),
711
# and in debug mode we don't want to. (Stdin is
712
# always replaced by /dev/null.)
713
self.checker = subprocess.Popen(command,
714
close_fds=True,
715
shell=True, cwd="/")
716
except OSError as error:
717
logger.error("Failed to start subprocess",
718
exc_info=error)
719
self.checker_callback_tag = (gobject.child_watch_add
720
(self.checker.pid,
721
self.checker_callback,
722
data=command))
723
# The checker may have completed before the gobject
724
# watch was added. Check for this.
725
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
726
if pid:
727
gobject.source_remove(self.checker_callback_tag)
728
self.checker_callback(pid, status, command)
729
# Re-run this periodically if run by gobject.timeout_add
1120
logger.info("Starting checker %r for %s", command,
1121
self.name)
1122
# We don't need to redirect stdout and stderr, since
1123
# in normal mode, that is already done by daemon(),
1124
# and in debug mode we don't want to. (Stdin is
1125
# always replaced by /dev/null.)
1126
# The exception is when not debugging but nevertheless
1127
# running in the foreground; use the previously
1128
# created wnull.
1129
popen_args = {"close_fds": True,
1130
"shell": True,
1131
"cwd": "/"}
1132
if (not self.server_settings["debug"]
1133
and self.server_settings["foreground"]):
1134
popen_args.update({"stdout": wnull,
1135
"stderr": wnull})
1136
pipe = multiprocessing.Pipe(duplex=False)
1137
self.checker = multiprocessing.Process(
1138
target=call_pipe,
1139
args=(pipe[1], subprocess.call, command),
1140
kwargs=popen_args)
1141
self.checker.start()
1142
self.checker_callback_tag = GLib.io_add_watch(
1143
pipe[0].fileno(), GLib.IO_IN,
1144
self.checker_callback, pipe[0], command)
1145
# Re-run this periodically if run by GLib.timeout_add
730
1146
return True
731
1147
732
1148
def stop_checker(self):
733
1149
"""Force the checker process, if any, to stop."""
734
1150
if self.checker_callback_tag:
735
gobject.source_remove(self.checker_callback_tag)
1151
GLib.source_remove(self.checker_callback_tag)
736
1152
self.checker_callback_tag = None
737
1153
if getattr(self, "checker", None) is None:
738
1154
return
739
1155
logger.debug("Stopping checker for %(name)s", vars(self))
740
try:
741
self.checker.terminate()
742
#time.sleep(0.5)
743
#if self.checker.poll() is None:
744
# self.checker.kill()
745
except OSError as error:
746
if error.errno != errno.ESRCH: # No such process
747
raise
1156
self.checker.terminate()
748
1157
self.checker = None
749
1158
750
1159
751
def dbus_service_property(dbus_interface, signature="v",
752
access="readwrite", byte_arrays=False):
1160
def dbus_service_property(dbus_interface,
1161
signature="v",
1162
access="readwrite",
1163
byte_arrays=False):
753
1164
"""Decorators for marking methods of a DBusObjectWithProperties to
754
1165
become properties on the D-Bus.
755
1166
756
1167
The decorated method will be called with no arguments by "Get"
757
1168
and with one argument by "Set".
758
1169
759
1170
The parameters, where they are supported, are the same as
760
1171
dbus.service.method, except there is only "signature", since the
761
1172
type from Get() and the type sent to Set() is the same.
764
1175
# "Set" method, so we fail early here:
765
1176
if byte_arrays and signature != "ay":
766
1177
raise ValueError("Byte arrays not supported for non-'ay'"
767
" signature {0!r}".format(signature))
1178
" signature {!r}".format(signature))
1179
768
1180
def decorator(func):
769
1181
func._dbus_is_property = True
770
1182
func._dbus_interface = dbus_interface
773
1185
func._dbus_name = func.__name__
774
1186
if func._dbus_name.endswith("_dbus_property"):
775
1187
func._dbus_name = func._dbus_name[:-14]
776
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1188
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
777
1189
return func
1190
778
1191
return decorator
779
1192
780
1193
781
1194
def dbus_interface_annotations(dbus_interface):
782
1195
"""Decorator for marking functions returning interface annotations
783
1196
784
1197
Usage:
785
1198
786
1199
@dbus_interface_annotations("org.example.Interface")
787
1200
def _foo(self): # Function name does not matter
788
1201
return {"org.freedesktop.DBus.Deprecated": "true",
789
1202
"org.freedesktop.DBus.Property.EmitsChangedSignal":
790
1203
"false"}
791
1204
"""
1205
792
1206
def decorator(func):
793
1207
func._dbus_is_interface = True
794
1208
func._dbus_interface = dbus_interface
795
1209
func._dbus_name = dbus_interface
796
1210
return func
1211
797
1212
return decorator
798
1213
799
1214
800
1215
def dbus_annotations(annotations):
801
1216
"""Decorator to annotate D-Bus methods, signals or properties
802
1217
Usage:
803
1218
1219
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1220
"org.freedesktop.DBus.Property."
1221
"EmitsChangedSignal": "false"})
804
1222
@dbus_service_property("org.example.Interface", signature="b",
805
1223
access="r")
806
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
807
"org.freedesktop.DBus.Property."
808
"EmitsChangedSignal": "false"})
809
1224
def Property_dbus_property(self):
810
1225
return dbus.Boolean(False)
1226
1227
See also the DBusObjectWithAnnotations class.
811
1228
"""
1229
812
1230
def decorator(func):
813
1231
func._dbus_annotations = annotations
814
1232
return func
1233
815
1234
return decorator
816
1235
817
1236
818
1237
class DBusPropertyException(dbus.exceptions.DBusException):
819
1238
"""A base class for D-Bus property-related exceptions
820
1239
"""
821
def __unicode__(self):
822
return unicode(str(self))
1240
pass
823
1241
824
1242
825
1243
class DBusPropertyAccessException(DBusPropertyException):
834
1252
pass
835
1253
836
1254
837
class DBusObjectWithProperties(dbus.service.Object):
838
"""A D-Bus object with properties.
839
840
Classes inheriting from this can use the dbus_service_property
841
decorator to expose methods as D-Bus properties. It exposes the
842
standard Get(), Set(), and GetAll() methods on the D-Bus.
1255
class DBusObjectWithAnnotations(dbus.service.Object):
1256
"""A D-Bus object with annotations.
1257
1258
Classes inheriting from this can use the dbus_annotations
1259
decorator to add annotations to methods or signals.
843
1260
"""
844
1261
845
1262
@staticmethod
846
1263
def _is_dbus_thing(thing):
847
1264
"""Returns a function testing if an attribute is a D-Bus thing
848
1265
849
1266
If called like _is_dbus_thing("method") it returns a function
850
1267
suitable for use as predicate to inspect.getmembers().
851
1268
"""
852
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1269
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
853
1270
False)
854
1271
855
1272
def _get_all_dbus_things(self, thing):
856
1273
"""Returns a generator of (name, attribute) pairs
857
1274
"""
858
return ((getattr(athing.__get__(self), "_dbus_name",
859
name),
1275
return ((getattr(athing.__get__(self), "_dbus_name", name),
860
1276
athing.__get__(self))
861
1277
for cls in self.__class__.__mro__
862
1278
for name, athing in
863
inspect.getmembers(cls,
864
self._is_dbus_thing(thing)))
865
1279
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1280
1281
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1282
out_signature="s",
1283
path_keyword='object_path',
1284
connection_keyword='connection')
1285
def Introspect(self, object_path, connection):
1286
"""Overloading of standard D-Bus method.
1287
1288
Inserts annotation tags on methods and signals.
1289
"""
1290
xmlstring = dbus.service.Object.Introspect(self, object_path,
1291
connection)
1292
try:
1293
document = xml.dom.minidom.parseString(xmlstring)
1294
1295
for if_tag in document.getElementsByTagName("interface"):
1296
# Add annotation tags
1297
for typ in ("method", "signal"):
1298
for tag in if_tag.getElementsByTagName(typ):
1299
annots = dict()
1300
for name, prop in (self.
1301
_get_all_dbus_things(typ)):
1302
if (name == tag.getAttribute("name")
1303
and prop._dbus_interface
1304
== if_tag.getAttribute("name")):
1305
annots.update(getattr(
1306
prop, "_dbus_annotations", {}))
1307
for name, value in annots.items():
1308
ann_tag = document.createElement(
1309
"annotation")
1310
ann_tag.setAttribute("name", name)
1311
ann_tag.setAttribute("value", value)
1312
tag.appendChild(ann_tag)
1313
# Add interface annotation tags
1314
for annotation, value in dict(
1315
itertools.chain.from_iterable(
1316
annotations().items()
1317
for name, annotations
1318
in self._get_all_dbus_things("interface")
1319
if name == if_tag.getAttribute("name")
1320
)).items():
1321
ann_tag = document.createElement("annotation")
1322
ann_tag.setAttribute("name", annotation)
1323
ann_tag.setAttribute("value", value)
1324
if_tag.appendChild(ann_tag)
1325
# Fix argument name for the Introspect method itself
1326
if (if_tag.getAttribute("name")
1327
== dbus.INTROSPECTABLE_IFACE):
1328
for cn in if_tag.getElementsByTagName("method"):
1329
if cn.getAttribute("name") == "Introspect":
1330
for arg in cn.getElementsByTagName("arg"):
1331
if (arg.getAttribute("direction")
1332
== "out"):
1333
arg.setAttribute("name",
1334
"xml_data")
1335
xmlstring = document.toxml("utf-8")
1336
document.unlink()
1337
except (AttributeError, xml.dom.DOMException,
1338
xml.parsers.expat.ExpatError) as error:
1339
logger.error("Failed to override Introspection method",
1340
exc_info=error)
1341
return xmlstring
1342
1343
1344
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1345
"""A D-Bus object with properties.
1346
1347
Classes inheriting from this can use the dbus_service_property
1348
decorator to expose methods as D-Bus properties. It exposes the
1349
standard Get(), Set(), and GetAll() methods on the D-Bus.
1350
"""
1351
866
1352
def _get_dbus_property(self, interface_name, property_name):
867
1353
"""Returns a bound method if one exists which is a D-Bus
868
1354
property with the specified name and interface.
869
1355
"""
870
for cls in self.__class__.__mro__:
871
for name, value in (inspect.getmembers
872
(cls,
873
self._is_dbus_thing("property"))):
1356
for cls in self.__class__.__mro__:
1357
for name, value in inspect.getmembers(
1358
cls, self._is_dbus_thing("property")):
874
1359
if (value._dbus_name == property_name
875
1360
and value._dbus_interface == interface_name):
876
1361
return value.__get__(self)
877
1362
878
1363
# No such property
879
raise DBusPropertyNotFound(self.dbus_object_path + ":"
880
+ interface_name + "."
881
+ property_name)
882
883
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1364
raise DBusPropertyNotFound("{}:{}.{}".format(
1365
self.dbus_object_path, interface_name, property_name))
1366
1367
@classmethod
1368
def _get_all_interface_names(cls):
1369
"""Get a sequence of all interfaces supported by an object"""
1370
return (name for name in set(getattr(getattr(x, attr),
1371
"_dbus_interface", None)
1372
for x in (inspect.getmro(cls))
1373
for attr in dir(x))
1374
if name is not None)
1375
1376
@dbus.service.method(dbus.PROPERTIES_IFACE,
1377
in_signature="ss",
884
1378
out_signature="v")
885
1379
def Get(self, interface_name, property_name):
886
1380
"""Standard D-Bus property Get() method, see D-Bus standard.
892
1386
if not hasattr(value, "variant_level"):
893
1387
return value
894
1388
return type(value)(value, variant_level=value.variant_level+1)
895
1389
896
1390
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
897
1391
def Set(self, interface_name, property_name, value):
898
1392
"""Standard D-Bus property Set() method, see D-Bus standard.
904
1398
# The byte_arrays option is not supported yet on
905
1399
# signatures other than "ay".
906
1400
if prop._dbus_signature != "ay":
907
raise ValueError
1401
raise ValueError("Byte arrays not supported for non-"
1402
"'ay' signature {!r}"
1403
.format(prop._dbus_signature))
908
1404
value = dbus.ByteArray(b''.join(chr(byte)
909
1405
for byte in value))
910
1406
prop(value)
911
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1407
1408
@dbus.service.method(dbus.PROPERTIES_IFACE,
1409
in_signature="s",
913
1410
out_signature="a{sv}")
914
1411
def GetAll(self, interface_name):
915
1412
"""Standard D-Bus property GetAll() method, see D-Bus
916
1413
standard.
917
1414
918
1415
Note: Will not include properties with access="write".
919
1416
"""
920
1417
properties = {}
930
1427
if not hasattr(value, "variant_level"):
931
1428
properties[name] = value
932
1429
continue
933
properties[name] = type(value)(value, variant_level=
934
value.variant_level+1)
1430
properties[name] = type(value)(
1431
value, variant_level=value.variant_level + 1)
935
1432
return dbus.Dictionary(properties, signature="sv")
936
1433
1434
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1435
def PropertiesChanged(self, interface_name, changed_properties,
1436
invalidated_properties):
1437
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1438
standard.
1439
"""
1440
pass
1441
937
1442
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
938
1443
out_signature="s",
939
1444
path_keyword='object_path',
940
1445
connection_keyword='connection')
941
1446
def Introspect(self, object_path, connection):
942
1447
"""Overloading of standard D-Bus method.
943
1448
944
1449
Inserts property tags and interface annotation tags.
945
1450
"""
946
xmlstring = dbus.service.Object.Introspect(self, object_path,
947
connection)
1451
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1452
object_path,
1453
connection)
948
1454
try:
949
1455
document = xml.dom.minidom.parseString(xmlstring)
1456
950
1457
def make_tag(document, name, prop):
951
1458
e = document.createElement("property")
952
1459
e.setAttribute("name", name)
953
1460
e.setAttribute("type", prop._dbus_signature)
954
1461
e.setAttribute("access", prop._dbus_access)
955
1462
return e
1463
956
1464
for if_tag in document.getElementsByTagName("interface"):
957
1465
# Add property tags
958
1466
for tag in (make_tag(document, name, prop)
961
1469
if prop._dbus_interface
962
1470
== if_tag.getAttribute("name")):
963
1471
if_tag.appendChild(tag)
964
# Add annotation tags
965
for typ in ("method", "signal", "property"):
966
for tag in if_tag.getElementsByTagName(typ):
967
annots = dict()
968
for name, prop in (self.
969
_get_all_dbus_things(typ)):
970
if (name == tag.getAttribute("name")
971
and prop._dbus_interface
972
== if_tag.getAttribute("name")):
973
annots.update(getattr
974
(prop,
975
"_dbus_annotations",
976
{}))
977
for name, value in annots.iteritems():
978
ann_tag = document.createElement(
979
"annotation")
980
ann_tag.setAttribute("name", name)
981
ann_tag.setAttribute("value", value)
982
tag.appendChild(ann_tag)
983
# Add interface annotation tags
984
for annotation, value in dict(
985
itertools.chain.from_iterable(
986
annotations().iteritems()
987
for name, annotations in
988
self._get_all_dbus_things("interface")
989
if name == if_tag.getAttribute("name")
990
)).iteritems():
991
ann_tag = document.createElement("annotation")
992
ann_tag.setAttribute("name", annotation)
993
ann_tag.setAttribute("value", value)
994
if_tag.appendChild(ann_tag)
1472
# Add annotation tags for properties
1473
for tag in if_tag.getElementsByTagName("property"):
1474
annots = dict()
1475
for name, prop in self._get_all_dbus_things(
1476
"property"):
1477
if (name == tag.getAttribute("name")
1478
and prop._dbus_interface
1479
== if_tag.getAttribute("name")):
1480
annots.update(getattr(
1481
prop, "_dbus_annotations", {}))
1482
for name, value in annots.items():
1483
ann_tag = document.createElement(
1484
"annotation")
1485
ann_tag.setAttribute("name", name)
1486
ann_tag.setAttribute("value", value)
1487
tag.appendChild(ann_tag)
995
1488
# Add the names to the return values for the
996
1489
# "org.freedesktop.DBus.Properties" methods
997
1490
if (if_tag.getAttribute("name")
1016
1509
return xmlstring
1017
1510
1018
1511
1019
def datetime_to_dbus (dt, variant_level=0):
1512
try:
1513
dbus.OBJECT_MANAGER_IFACE
1514
except AttributeError:
1515
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1516
1517
1518
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1519
"""A D-Bus object with an ObjectManager.
1520
1521
Classes inheriting from this exposes the standard
1522
GetManagedObjects call and the InterfacesAdded and
1523
InterfacesRemoved signals on the standard
1524
"org.freedesktop.DBus.ObjectManager" interface.
1525
1526
Note: No signals are sent automatically; they must be sent
1527
manually.
1528
"""
1529
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1530
out_signature="a{oa{sa{sv}}}")
1531
def GetManagedObjects(self):
1532
"""This function must be overridden"""
1533
raise NotImplementedError()
1534
1535
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1536
signature="oa{sa{sv}}")
1537
def InterfacesAdded(self, object_path, interfaces_and_properties):
1538
pass
1539
1540
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1541
def InterfacesRemoved(self, object_path, interfaces):
1542
pass
1543
1544
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1545
out_signature="s",
1546
path_keyword='object_path',
1547
connection_keyword='connection')
1548
def Introspect(self, object_path, connection):
1549
"""Overloading of standard D-Bus method.
1550
1551
Override return argument name of GetManagedObjects to be
1552
"objpath_interfaces_and_properties"
1553
"""
1554
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1555
object_path,
1556
connection)
1557
try:
1558
document = xml.dom.minidom.parseString(xmlstring)
1559
1560
for if_tag in document.getElementsByTagName("interface"):
1561
# Fix argument name for the GetManagedObjects method
1562
if (if_tag.getAttribute("name")
1563
== dbus.OBJECT_MANAGER_IFACE):
1564
for cn in if_tag.getElementsByTagName("method"):
1565
if (cn.getAttribute("name")
1566
== "GetManagedObjects"):
1567
for arg in cn.getElementsByTagName("arg"):
1568
if (arg.getAttribute("direction")
1569
== "out"):
1570
arg.setAttribute(
1571
"name",
1572
"objpath_interfaces"
1573
"_and_properties")
1574
xmlstring = document.toxml("utf-8")
1575
document.unlink()
1576
except (AttributeError, xml.dom.DOMException,
1577
xml.parsers.expat.ExpatError) as error:
1578
logger.error("Failed to override Introspection method",
1579
exc_info=error)
1580
return xmlstring
1581
1582
1583
def datetime_to_dbus(dt, variant_level=0):
1020
1584
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1021
1585
if dt is None:
1022
return dbus.String("", variant_level = variant_level)
1023
return dbus.String(dt.isoformat(),
1024
variant_level=variant_level)
1586
return dbus.String("", variant_level=variant_level)
1587
return dbus.String(dt.isoformat(), variant_level=variant_level)
1025
1588
1026
1589
1027
1590
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1029
1592
dbus.service.Object, it will add alternate D-Bus attributes with
1030
1593
interface names according to the "alt_interface_names" mapping.
1031
1594
Usage:
1032
1033
@alternate_dbus_names({"org.example.Interface":
1034
"net.example.AlternateInterface"})
1595
1596
@alternate_dbus_interfaces({"org.example.Interface":
1597
"net.example.AlternateInterface"})
1035
1598
class SampleDBusObject(dbus.service.Object):
1036
1599
@dbus.service.method("org.example.Interface")
1037
1600
def SampleDBusMethod():
1038
1601
pass
1039
1602
1040
1603
The above "SampleDBusMethod" on "SampleDBusObject" will be
1041
1604
reachable via two interfaces: "org.example.Interface" and
1042
1605
"net.example.AlternateInterface", the latter of which will have
1043
1606
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1044
1607
"true", unless "deprecate" is passed with a False value.
1045
1608
1046
1609
This works for methods and signals, and also for D-Bus properties
1047
1610
(from DBusObjectWithProperties) and interfaces (from the
1048
1611
dbus_interface_annotations decorator).
1049
1612
"""
1613
1050
1614
def wrapper(cls):
1051
1615
for orig_interface_name, alt_interface_name in (
1052
alt_interface_names.iteritems()):
1616
alt_interface_names.items()):
1053
1617
attr = {}
1054
1618
interface_names = set()
1055
1619
# Go though all attributes of the class
1057
1621
# Ignore non-D-Bus attributes, and D-Bus attributes
1058
1622
# with the wrong interface name
1059
1623
if (not hasattr(attribute, "_dbus_interface")
1060
or not attribute._dbus_interface
1061
.startswith(orig_interface_name)):
1624
or not attribute._dbus_interface.startswith(
1625
orig_interface_name)):
1062
1626
continue
1063
1627
# Create an alternate D-Bus interface name based on
1064
1628
# the current name
1065
alt_interface = (attribute._dbus_interface
1066
.replace(orig_interface_name,
1067
alt_interface_name))
1629
alt_interface = attribute._dbus_interface.replace(
1630
orig_interface_name, alt_interface_name)
1068
1631
interface_names.add(alt_interface)
1069
1632
# Is this a D-Bus signal?
1070
1633
if getattr(attribute, "_dbus_is_signal", False):
1071
# Extract the original non-method function by
1072
# black magic
1073
nonmethod_func = (dict(
1634
# Extract the original non-method undecorated
1635
# function by black magic
1636
if sys.version_info.major == 2:
1637
nonmethod_func = (dict(
1074
1638
zip(attribute.func_code.co_freevars,
1075
attribute.__closure__))["func"]
1076
.cell_contents)
1639
attribute.__closure__))
1640
["func"].cell_contents)
1641
else:
1642
nonmethod_func = (dict(
1643
zip(attribute.__code__.co_freevars,
1644
attribute.__closure__))
1645
["func"].cell_contents)
1077
1646
# Create a new, but exactly alike, function
1078
1647
# object, and decorate it to be a new D-Bus signal
1079
1648
# with the alternate D-Bus interface name
1080
new_function = (dbus.service.signal
1081
(alt_interface,
1082
attribute._dbus_signature)
1083
(types.FunctionType(
1084
nonmethod_func.func_code,
1085
nonmethod_func.func_globals,
1086
nonmethod_func.func_name,
1087
nonmethod_func.func_defaults,
1088
nonmethod_func.func_closure)))
1649
new_function = copy_function(nonmethod_func)
1650
new_function = (dbus.service.signal(
1651
alt_interface,
1652
attribute._dbus_signature)(new_function))
1089
1653
# Copy annotations, if any
1090
1654
try:
1091
new_function._dbus_annotations = (
1092
dict(attribute._dbus_annotations))
1655
new_function._dbus_annotations = dict(
1656
attribute._dbus_annotations)
1093
1657
except AttributeError:
1094
1658
pass
1659
1095
1660
# Define a creator of a function to call both the
1096
1661
# original and alternate functions, so both the
1097
1662
# original and alternate signals gets sent when
1100
1665
"""This function is a scope container to pass
1101
1666
func1 and func2 to the "call_both" function
1102
1667
outside of its arguments"""
1668
1669
@functools.wraps(func2)
1103
1670
def call_both(*args, **kwargs):
1104
1671
"""This function will emit two D-Bus
1105
1672
signals by calling func1 and func2"""
1106
1673
func1(*args, **kwargs)
1107
1674
func2(*args, **kwargs)
1675
# Make wrapper function look like a D-Bus
1676
# signal
1677
for name, attr in inspect.getmembers(func2):
1678
if name.startswith("_dbus_"):
1679
setattr(call_both, name, attr)
1680
1108
1681
return call_both
1109
1682
# Create the "call_both" function and add it to
1110
1683
# the class
1115
1688
# object. Decorate it to be a new D-Bus method
1116
1689
# with the alternate D-Bus interface name. Add it
1117
1690
# to the class.
1118
attr[attrname] = (dbus.service.method
1119
(alt_interface,
1120
attribute._dbus_in_signature,
1121
attribute._dbus_out_signature)
1122
(types.FunctionType
1123
(attribute.func_code,
1124
attribute.func_globals,
1125
attribute.func_name,
1126
attribute.func_defaults,
1127
attribute.func_closure)))
1691
attr[attrname] = (
1692
dbus.service.method(
1693
alt_interface,
1694
attribute._dbus_in_signature,
1695
attribute._dbus_out_signature)
1696
(copy_function(attribute)))
1128
1697
# Copy annotations, if any
1129
1698
try:
1130
attr[attrname]._dbus_annotations = (
1131
dict(attribute._dbus_annotations))
1699
attr[attrname]._dbus_annotations = dict(
1700
attribute._dbus_annotations)
1132
1701
except AttributeError:
1133
1702
pass
1134
1703
# Is this a D-Bus property?
1137
1706
# object, and decorate it to be a new D-Bus
1138
1707
# property with the alternate D-Bus interface
1139
1708
# name. Add it to the class.
1140
attr[attrname] = (dbus_service_property
1141
(alt_interface,
1142
attribute._dbus_signature,
1143
attribute._dbus_access,
1144
attribute
1145
._dbus_get_args_options
1146
["byte_arrays"])
1147
(types.FunctionType
1148
(attribute.func_code,
1149
attribute.func_globals,
1150
attribute.func_name,
1151
attribute.func_defaults,
1152
attribute.func_closure)))
1709
attr[attrname] = (dbus_service_property(
1710
alt_interface, attribute._dbus_signature,
1711
attribute._dbus_access,
1712
attribute._dbus_get_args_options
1713
["byte_arrays"])
1714
(copy_function(attribute)))
1153
1715
# Copy annotations, if any
1154
1716
try:
1155
attr[attrname]._dbus_annotations = (
1156
dict(attribute._dbus_annotations))
1717
attr[attrname]._dbus_annotations = dict(
1718
attribute._dbus_annotations)
1157
1719
except AttributeError:
1158
1720
pass
1159
1721
# Is this a D-Bus interface?
1162
1724
# object. Decorate it to be a new D-Bus interface
1163
1725
# with the alternate D-Bus interface name. Add it
1164
1726
# to the class.
1165
attr[attrname] = (dbus_interface_annotations
1166
(alt_interface)
1167
(types.FunctionType
1168
(attribute.func_code,
1169
attribute.func_globals,
1170
attribute.func_name,
1171
attribute.func_defaults,
1172
attribute.func_closure)))
1727
attr[attrname] = (
1728
dbus_interface_annotations(alt_interface)
1729
(copy_function(attribute)))
1173
1730
if deprecate:
1174
1731
# Deprecate all alternate interfaces
1175
iname="_AlternateDBusNames_interface_annotation{0}"
1732
iname = "_AlternateDBusNames_interface_annotation{}"
1176
1733
for interface_name in interface_names:
1734
1177
1735
@dbus_interface_annotations(interface_name)
1178
1736
def func(self):
1179
return { "org.freedesktop.DBus.Deprecated":
1180
"true" }
1737
return {"org.freedesktop.DBus.Deprecated":
1738
"true"}
1181
1739
# Find an unused name
1182
1740
for aname in (iname.format(i)
1183
1741
for i in itertools.count()):
1187
1745
if interface_names:
1188
1746
# Replace the class with a new subclass of it with
1189
1747
# methods, signals, etc. as created above.
1190
cls = type(b"{0}Alternate".format(cls.__name__),
1191
(cls,), attr)
1748
if sys.version_info.major == 2:
1749
cls = type(b"{}Alternate".format(cls.__name__),
1750
(cls, ), attr)
1751
else:
1752
cls = type("{}Alternate".format(cls.__name__),
1753
(cls, ), attr)
1192
1754
return cls
1755
1193
1756
return wrapper
1194
1757
1195
1758
1196
1759
@alternate_dbus_interfaces({"se.recompile.Mandos":
1197
"se.bsnet.fukt.Mandos"})
1760
"se.bsnet.fukt.Mandos"})
1198
1761
class ClientDBus(Client, DBusObjectWithProperties):
1199
1762
"""A Client class using D-Bus
1200
1763
1201
1764
Attributes:
1202
1765
dbus_object_path: dbus.ObjectPath
1203
1766
bus: dbus.SystemBus()
1204
1767
"""
1205
1768
1206
1769
runtime_expansions = (Client.runtime_expansions
1207
+ ("dbus_object_path",))
1208
1770
+ ("dbus_object_path", ))
1771
1772
_interface = "se.recompile.Mandos.Client"
1773
1209
1774
# dbus.service.Object doesn't use super(), so we can't either.
1210
1211
def __init__(self, bus = None, *args, **kwargs):
1775
1776
def __init__(self, bus=None, *args, **kwargs):
1212
1777
self.bus = bus
1213
1778
Client.__init__(self, *args, **kwargs)
1214
1779
# Only now, when this client is initialized, can it show up on
1215
1780
# the D-Bus
1216
client_object_name = unicode(self.name).translate(
1781
client_object_name = str(self.name).translate(
1217
1782
{ord("."): ord("_"),
1218
1783
ord("-"): ord("_")})
1219
self.dbus_object_path = (dbus.ObjectPath
1220
("/clients/" + client_object_name))
1784
self.dbus_object_path = dbus.ObjectPath(
1785
"/clients/" + client_object_name)
1221
1786
DBusObjectWithProperties.__init__(self, self.bus,
1222
1787
self.dbus_object_path)
1223
1224
def notifychangeproperty(transform_func,
1225
dbus_name, type_func=lambda x: x,
1226
variant_level=1):
1788
1789
def notifychangeproperty(transform_func, dbus_name,
1790
type_func=lambda x: x,
1791
variant_level=1,
1792
invalidate_only=False,
1793
_interface=_interface):
1227
1794
""" Modify a variable so that it's a property which announces
1228
1795
its changes to DBus.
1229
1796
1230
1797
transform_fun: Function that takes a value and a variant_level
1231
1798
and transforms it to a D-Bus type.
1232
1799
dbus_name: D-Bus name of the variable
1234
1801
to the D-Bus. Default: no transform
1235
1802
variant_level: D-Bus variant level. Default: 1
1236
1803
"""
1237
attrname = "_{0}".format(dbus_name)
1804
attrname = "_{}".format(dbus_name)
1805
1238
1806
def setter(self, value):
1239
1807
if hasattr(self, "dbus_object_path"):
1240
1808
if (not hasattr(self, attrname) or
1241
1809
type_func(getattr(self, attrname, None))
1242
1810
!= type_func(value)):
1243
dbus_value = transform_func(type_func(value),
1244
variant_level
1245
=variant_level)
1246
self.PropertyChanged(dbus.String(dbus_name),
1247
dbus_value)
1811
if invalidate_only:
1812
self.PropertiesChanged(
1813
_interface, dbus.Dictionary(),
1814
dbus.Array((dbus_name, )))
1815
else:
1816
dbus_value = transform_func(
1817
type_func(value),
1818
variant_level=variant_level)
1819
self.PropertyChanged(dbus.String(dbus_name),
1820
dbus_value)
1821
self.PropertiesChanged(
1822
_interface,
1823
dbus.Dictionary({dbus.String(dbus_name):
1824
dbus_value}),
1825
dbus.Array())
1248
1826
setattr(self, attrname, value)
1249
1827
1250
1828
return property(lambda self: getattr(self, attrname), setter)
1251
1829
1252
1830
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1253
1831
approvals_pending = notifychangeproperty(dbus.Boolean,
1254
1832
"ApprovalPending",
1255
type_func = bool)
1833
type_func=bool)
1256
1834
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1257
1835
last_enabled = notifychangeproperty(datetime_to_dbus,
1258
1836
"LastEnabled")
1259
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1260
type_func = lambda checker:
1261
checker is not None)
1837
checker = notifychangeproperty(
1838
dbus.Boolean, "CheckerRunning",
1839
type_func=lambda checker: checker is not None)
1262
1840
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1263
1841
"LastCheckedOK")
1264
1842
last_checker_status = notifychangeproperty(dbus.Int16,
1267
1845
datetime_to_dbus, "LastApprovalRequest")
1268
1846
approved_by_default = notifychangeproperty(dbus.Boolean,
1269
1847
"ApprovedByDefault")
1270
approval_delay = notifychangeproperty(dbus.UInt64,
1271
"ApprovalDelay",
1272
type_func =
1273
timedelta_to_milliseconds)
1848
approval_delay = notifychangeproperty(
1849
dbus.UInt64, "ApprovalDelay",
1850
type_func=lambda td: td.total_seconds() * 1000)
1274
1851
approval_duration = notifychangeproperty(
1275
1852
dbus.UInt64, "ApprovalDuration",
1276
type_func = timedelta_to_milliseconds)
1853
type_func=lambda td: td.total_seconds() * 1000)
1277
1854
host = notifychangeproperty(dbus.String, "Host")
1278
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1279
type_func =
1280
timedelta_to_milliseconds)
1855
timeout = notifychangeproperty(
1856
dbus.UInt64, "Timeout",
1857
type_func=lambda td: td.total_seconds() * 1000)
1281
1858
extended_timeout = notifychangeproperty(
1282
1859
dbus.UInt64, "ExtendedTimeout",
1283
type_func = timedelta_to_milliseconds)
1284
interval = notifychangeproperty(dbus.UInt64,
1285
"Interval",
1286
type_func =
1287
timedelta_to_milliseconds)
1860
type_func=lambda td: td.total_seconds() * 1000)
1861
interval = notifychangeproperty(
1862
dbus.UInt64, "Interval",
1863
type_func=lambda td: td.total_seconds() * 1000)
1288
1864
checker_command = notifychangeproperty(dbus.String, "Checker")
1289
1865
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1866
invalidate_only=True)
1867
1290
1868
del notifychangeproperty
1291
1869
1292
1870
def __del__(self, *args, **kwargs):
1293
1871
try:
1294
1872
self.remove_from_connection()
1297
1875
if hasattr(DBusObjectWithProperties, "__del__"):
1298
1876
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1299
1877
Client.__del__(self, *args, **kwargs)
1300
1301
def checker_callback(self, pid, condition, command,
1302
*args, **kwargs):
1303
self.checker_callback_tag = None
1304
self.checker = None
1305
if os.WIFEXITED(condition):
1306
exitstatus = os.WEXITSTATUS(condition)
1878
1879
def checker_callback(self, source, condition,
1880
connection, command, *args, **kwargs):
1881
ret = Client.checker_callback(self, source, condition,
1882
connection, command, *args,
1883
**kwargs)
1884
exitstatus = self.last_checker_status
1885
if exitstatus >= 0:
1307
1886
# Emit D-Bus signal
1308
1887
self.CheckerCompleted(dbus.Int16(exitstatus),
1309
dbus.Int64(condition),
1888
# This is specific to GNU libC
1889
dbus.Int64(exitstatus << 8),
1310
1890
dbus.String(command))
1311
1891
else:
1312
1892
# Emit D-Bus signal
1313
1893
self.CheckerCompleted(dbus.Int16(-1),
1314
dbus.Int64(condition),
1894
dbus.Int64(
1895
# This is specific to GNU libC
1896
(exitstatus << 8)
1897
| self.last_checker_signal),
1315
1898
dbus.String(command))
1316
1317
return Client.checker_callback(self, pid, condition, command,
1318
*args, **kwargs)
1319
1899
return ret
1900
1320
1901
def start_checker(self, *args, **kwargs):
1321
old_checker = self.checker
1322
if self.checker is not None:
1323
old_checker_pid = self.checker.pid
1324
else:
1325
old_checker_pid = None
1902
old_checker_pid = getattr(self.checker, "pid", None)
1326
1903
r = Client.start_checker(self, *args, **kwargs)
1327
1904
# Only if new checker process was started
1328
1905
if (self.checker is not None
1330
1907
# Emit D-Bus signal
1331
1908
self.CheckerStarted(self.current_checker_command)
1332
1909
return r
1333
1910
1334
1911
def _reset_approved(self):
1335
1912
self.approved = None
1336
1913
return False
1337
1914
1338
1915
def approve(self, value=True):
1339
1916
self.approved = value
1340
gobject.timeout_add(timedelta_to_milliseconds
1341
(self.approval_duration),
1342
self._reset_approved)
1917
GLib.timeout_add(int(self.approval_duration.total_seconds()
1918
* 1000), self._reset_approved)
1343
1919
self.send_changedstate()
1344
1345
## D-Bus methods, signals & properties
1346
_interface = "se.recompile.Mandos.Client"
1347
1348
## Interfaces
1349
1350
@dbus_interface_annotations(_interface)
1351
def _foo(self):
1352
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1353
"false"}
1354
1355
## Signals
1356
1920
1921
# D-Bus methods, signals & properties
1922
1923
# Interfaces
1924
1925
# Signals
1926
1357
1927
# CheckerCompleted - signal
1358
1928
@dbus.service.signal(_interface, signature="nxs")
1359
1929
def CheckerCompleted(self, exitcode, waitstatus, command):
1360
1930
"D-Bus signal"
1361
1931
pass
1362
1932
1363
1933
# CheckerStarted - signal
1364
1934
@dbus.service.signal(_interface, signature="s")
1365
1935
def CheckerStarted(self, command):
1366
1936
"D-Bus signal"
1367
1937
pass
1368
1938
1369
1939
# PropertyChanged - signal
1940
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1370
1941
@dbus.service.signal(_interface, signature="sv")
1371
1942
def PropertyChanged(self, property, value):
1372
1943
"D-Bus signal"
1373
1944
pass
1374
1945
1375
1946
# GotSecret - signal
1376
1947
@dbus.service.signal(_interface)
1377
1948
def GotSecret(self):
1380
1951
server to mandos-client
1381
1952
"""
1382
1953
pass
1383
1954
1384
1955
# Rejected - signal
1385
1956
@dbus.service.signal(_interface, signature="s")
1386
1957
def Rejected(self, reason):
1387
1958
"D-Bus signal"
1388
1959
pass
1389
1960
1390
1961
# NeedApproval - signal
1391
1962
@dbus.service.signal(_interface, signature="tb")
1392
1963
def NeedApproval(self, timeout, default):
1393
1964
"D-Bus signal"
1394
1965
return self.need_approval()
1395
1396
## Methods
1397
1966
1967
# Methods
1968
1398
1969
# Approve - method
1399
1970
@dbus.service.method(_interface, in_signature="b")
1400
1971
def Approve(self, value):
1401
1972
self.approve(value)
1402
1973
1403
1974
# CheckedOK - method
1404
1975
@dbus.service.method(_interface)
1405
1976
def CheckedOK(self):
1406
1977
self.checked_ok()
1407
1978
1408
1979
# Enable - method
1980
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1409
1981
@dbus.service.method(_interface)
1410
1982
def Enable(self):
1411
1983
"D-Bus method"
1412
1984
self.enable()
1413
1985
1414
1986
# StartChecker - method
1987
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1415
1988
@dbus.service.method(_interface)
1416
1989
def StartChecker(self):
1417
1990
"D-Bus method"
1418
1991
self.start_checker()
1419
1992
1420
1993
# Disable - method
1994
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1421
1995
@dbus.service.method(_interface)
1422
1996
def Disable(self):
1423
1997
"D-Bus method"
1424
1998
self.disable()
1425
1999
1426
2000
# StopChecker - method
2001
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1427
2002
@dbus.service.method(_interface)
1428
2003
def StopChecker(self):
1429
2004
self.stop_checker()
1430
1431
## Properties
1432
2005
2006
# Properties
2007
1433
2008
# ApprovalPending - property
1434
2009
@dbus_service_property(_interface, signature="b", access="read")
1435
2010
def ApprovalPending_dbus_property(self):
1436
2011
return dbus.Boolean(bool(self.approvals_pending))
1437
2012
1438
2013
# ApprovedByDefault - property
1439
@dbus_service_property(_interface, signature="b",
2014
@dbus_service_property(_interface,
2015
signature="b",
1440
2016
access="readwrite")
1441
2017
def ApprovedByDefault_dbus_property(self, value=None):
1442
2018
if value is None: # get
1443
2019
return dbus.Boolean(self.approved_by_default)
1444
2020
self.approved_by_default = bool(value)
1445
2021
1446
2022
# ApprovalDelay - property
1447
@dbus_service_property(_interface, signature="t",
2023
@dbus_service_property(_interface,
2024
signature="t",
1448
2025
access="readwrite")
1449
2026
def ApprovalDelay_dbus_property(self, value=None):
1450
2027
if value is None: # get
1451
return dbus.UInt64(self.approval_delay_milliseconds())
2028
return dbus.UInt64(self.approval_delay.total_seconds()
2029
* 1000)
1452
2030
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1453
2031
1454
2032
# ApprovalDuration - property
1455
@dbus_service_property(_interface, signature="t",
2033
@dbus_service_property(_interface,
2034
signature="t",
1456
2035
access="readwrite")
1457
2036
def ApprovalDuration_dbus_property(self, value=None):
1458
2037
if value is None: # get
1459
return dbus.UInt64(timedelta_to_milliseconds(
1460
self.approval_duration))
2038
return dbus.UInt64(self.approval_duration.total_seconds()
2039
* 1000)
1461
2040
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1462
2041
1463
2042
# Name - property
2043
@dbus_annotations(
2044
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1464
2045
@dbus_service_property(_interface, signature="s", access="read")
1465
2046
def Name_dbus_property(self):
1466
2047
return dbus.String(self.name)
1467
2048
2049
# KeyID - property
2050
@dbus_annotations(
2051
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2052
@dbus_service_property(_interface, signature="s", access="read")
2053
def KeyID_dbus_property(self):
2054
return dbus.String(self.key_id)
2055
1468
2056
# Fingerprint - property
2057
@dbus_annotations(
2058
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1469
2059
@dbus_service_property(_interface, signature="s", access="read")
1470
2060
def Fingerprint_dbus_property(self):
1471
2061
return dbus.String(self.fingerprint)
1472
2062
1473
2063
# Host - property
1474
@dbus_service_property(_interface, signature="s",
2064
@dbus_service_property(_interface,
2065
signature="s",
1475
2066
access="readwrite")
1476
2067
def Host_dbus_property(self, value=None):
1477
2068
if value is None: # get
1478
2069
return dbus.String(self.host)
1479
self.host = unicode(value)
1480
2070
self.host = str(value)
2071
1481
2072
# Created - property
2073
@dbus_annotations(
2074
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1482
2075
@dbus_service_property(_interface, signature="s", access="read")
1483
2076
def Created_dbus_property(self):
1484
2077
return datetime_to_dbus(self.created)
1485
2078
1486
2079
# LastEnabled - property
1487
2080
@dbus_service_property(_interface, signature="s", access="read")
1488
2081
def LastEnabled_dbus_property(self):
1489
2082
return datetime_to_dbus(self.last_enabled)
1490
2083
1491
2084
# Enabled - property
1492
@dbus_service_property(_interface, signature="b",
2085
@dbus_service_property(_interface,
2086
signature="b",
1493
2087
access="readwrite")
1494
2088
def Enabled_dbus_property(self, value=None):
1495
2089
if value is None: # get
1498
2092
self.enable()
1499
2093
else:
1500
2094
self.disable()
1501
2095
1502
2096
# LastCheckedOK - property
1503
@dbus_service_property(_interface, signature="s",
2097
@dbus_service_property(_interface,
2098
signature="s",
1504
2099
access="readwrite")
1505
2100
def LastCheckedOK_dbus_property(self, value=None):
1506
2101
if value is not None:
1507
2102
self.checked_ok()
1508
2103
return
1509
2104
return datetime_to_dbus(self.last_checked_ok)
1510
2105
1511
2106
# LastCheckerStatus - property
1512
@dbus_service_property(_interface, signature="n",
1513
access="read")
2107
@dbus_service_property(_interface, signature="n", access="read")
1514
2108
def LastCheckerStatus_dbus_property(self):
1515
2109
return dbus.Int16(self.last_checker_status)
1516
2110
1517
2111
# Expires - property
1518
2112
@dbus_service_property(_interface, signature="s", access="read")
1519
2113
def Expires_dbus_property(self):
1520
2114
return datetime_to_dbus(self.expires)
1521
2115
1522
2116
# LastApprovalRequest - property
1523
2117
@dbus_service_property(_interface, signature="s", access="read")
1524
2118
def LastApprovalRequest_dbus_property(self):
1525
2119
return datetime_to_dbus(self.last_approval_request)
1526
2120
1527
2121
# Timeout - property
1528
@dbus_service_property(_interface, signature="t",
2122
@dbus_service_property(_interface,
2123
signature="t",
1529
2124
access="readwrite")
1530
2125
def Timeout_dbus_property(self, value=None):
1531
2126
if value is None: # get
1532
return dbus.UInt64(self.timeout_milliseconds())
2127
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1533
2128
old_timeout = self.timeout
1534
2129
self.timeout = datetime.timedelta(0, 0, 0, value)
1535
2130
# Reschedule disabling
1543
2138
if (getattr(self, "disable_initiator_tag", None)
1544
2139
is None):
1545
2140
return
1546
gobject.source_remove(self.disable_initiator_tag)
1547
self.disable_initiator_tag = (
1548
gobject.timeout_add(
1549
timedelta_to_milliseconds(self.expires - now),
1550
self.disable))
1551
2141
GLib.source_remove(self.disable_initiator_tag)
2142
self.disable_initiator_tag = GLib.timeout_add(
2143
int((self.expires - now).total_seconds() * 1000),
2144
self.disable)
2145
1552
2146
# ExtendedTimeout - property
1553
@dbus_service_property(_interface, signature="t",
2147
@dbus_service_property(_interface,
2148
signature="t",
1554
2149
access="readwrite")
1555
2150
def ExtendedTimeout_dbus_property(self, value=None):
1556
2151
if value is None: # get
1557
return dbus.UInt64(self.extended_timeout_milliseconds())
2152
return dbus.UInt64(self.extended_timeout.total_seconds()
2153
* 1000)
1558
2154
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1559
2155
1560
2156
# Interval - property
1561
@dbus_service_property(_interface, signature="t",
2157
@dbus_service_property(_interface,
2158
signature="t",
1562
2159
access="readwrite")
1563
2160
def Interval_dbus_property(self, value=None):
1564
2161
if value is None: # get
1565
return dbus.UInt64(self.interval_milliseconds())
2162
return dbus.UInt64(self.interval.total_seconds() * 1000)
1566
2163
self.interval = datetime.timedelta(0, 0, 0, value)
1567
2164
if getattr(self, "checker_initiator_tag", None) is None:
1568
2165
return
1569
2166
if self.enabled:
1570
2167
# Reschedule checker run
1571
gobject.source_remove(self.checker_initiator_tag)
1572
self.checker_initiator_tag = (gobject.timeout_add
1573
(value, self.start_checker))
1574
self.start_checker() # Start one now, too
1575
2168
GLib.source_remove(self.checker_initiator_tag)
2169
self.checker_initiator_tag = GLib.timeout_add(
2170
value, self.start_checker)
2171
self.start_checker() # Start one now, too
2172
1576
2173
# Checker - property
1577
@dbus_service_property(_interface, signature="s",
2174
@dbus_service_property(_interface,
2175
signature="s",
1578
2176
access="readwrite")
1579
2177
def Checker_dbus_property(self, value=None):
1580
2178
if value is None: # get
1581
2179
return dbus.String(self.checker_command)
1582
self.checker_command = unicode(value)
1583
2180
self.checker_command = str(value)
2181
1584
2182
# CheckerRunning - property
1585
@dbus_service_property(_interface, signature="b",
2183
@dbus_service_property(_interface,
2184
signature="b",
1586
2185
access="readwrite")
1587
2186
def CheckerRunning_dbus_property(self, value=None):
1588
2187
if value is None: # get
1591
2190
self.start_checker()
1592
2191
else:
1593
2192
self.stop_checker()
1594
2193
1595
2194
# ObjectPath - property
2195
@dbus_annotations(
2196
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2197
"org.freedesktop.DBus.Deprecated": "true"})
1596
2198
@dbus_service_property(_interface, signature="o", access="read")
1597
2199
def ObjectPath_dbus_property(self):
1598
return self.dbus_object_path # is already a dbus.ObjectPath
1599
2200
return self.dbus_object_path # is already a dbus.ObjectPath
2201
1600
2202
# Secret = property
1601
@dbus_service_property(_interface, signature="ay",
1602
access="write", byte_arrays=True)
2203
@dbus_annotations(
2204
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2205
"invalidates"})
2206
@dbus_service_property(_interface,
2207
signature="ay",
2208
access="write",
2209
byte_arrays=True)
1603
2210
def Secret_dbus_property(self, value):
1604
self.secret = str(value)
1605
2211
self.secret = bytes(value)
2212
1606
2213
del _interface
1607
2214
1608
2215
1609
2216
class ProxyClient(object):
1610
def __init__(self, child_pipe, fpr, address):
2217
def __init__(self, child_pipe, key_id, fpr, address):
1611
2218
self._pipe = child_pipe
1612
self._pipe.send(('init', fpr, address))
2219
self._pipe.send(('init', key_id, fpr, address))
1613
2220
if not self._pipe.recv():
1614
raise KeyError()
1615
2221
raise KeyError(key_id or fpr)
2222
1616
2223
def __getattribute__(self, name):
1617
2224
if name == '_pipe':
1618
2225
return super(ProxyClient, self).__getattribute__(name)
1621
2228
if data[0] == 'data':
1622
2229
return data[1]
1623
2230
if data[0] == 'function':
2231
1624
2232
def func(*args, **kwargs):
1625
2233
self._pipe.send(('funcall', name, args, kwargs))
1626
2234
return self._pipe.recv()[1]
2235
1627
2236
return func
1628
2237
1629
2238
def __setattr__(self, name, value):
1630
2239
if name == '_pipe':
1631
2240
return super(ProxyClient, self).__setattr__(name, value)
1634
2243
1635
2244
class ClientHandler(socketserver.BaseRequestHandler, object):
1636
2245
"""A class to handle client connections.
1637
2246
1638
2247
Instantiated once for each connection to handle it.
1639
2248
Note: This will run in its own forked process."""
1640
2249
1641
2250
def handle(self):
1642
2251
with contextlib.closing(self.server.child_pipe) as child_pipe:
1643
2252
logger.info("TCP connection from: %s",
1644
unicode(self.client_address))
2253
str(self.client_address))
1645
2254
logger.debug("Pipe FD: %d",
1646
2255
self.server.child_pipe.fileno())
1647
1648
session = (gnutls.connection
1649
.ClientSession(self.request,
1650
gnutls.connection
1651
.X509Credentials()))
1652
1653
# Note: gnutls.connection.X509Credentials is really a
1654
# generic GnuTLS certificate credentials object so long as
1655
# no X.509 keys are added to it. Therefore, we can use it
1656
# here despite using OpenPGP certificates.
1657
1658
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1659
# "+AES-256-CBC", "+SHA1",
1660
# "+COMP-NULL", "+CTYPE-OPENPGP",
1661
# "+DHE-DSS"))
2256
2257
session = gnutls.ClientSession(self.request)
2258
2259
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2260
# "+AES-256-CBC", "+SHA1",
2261
# "+COMP-NULL", "+CTYPE-OPENPGP",
2262
# "+DHE-DSS"))
1662
2263
# Use a fallback default, since this MUST be set.
1663
2264
priority = self.server.gnutls_priority
1664
2265
if priority is None:
1665
2266
priority = "NORMAL"
1666
(gnutls.library.functions
1667
.gnutls_priority_set_direct(session._c_object,
1668
priority, None))
1669
2267
gnutls.priority_set_direct(session._c_object,
2268
priority.encode("utf-8"),
2269
None)
2270
1670
2271
# Start communication using the Mandos protocol
1671
2272
# Get protocol number
1672
2273
line = self.request.makefile().readline()
1673
2274
logger.debug("Protocol version: %r", line)
1674
2275
try:
1675
2276
if int(line.strip().split()[0]) > 1:
1676
raise RuntimeError
2277
raise RuntimeError(line)
1677
2278
except (ValueError, IndexError, RuntimeError) as error:
1678
2279
logger.error("Unknown protocol version: %s", error)
1679
2280
return
1680
2281
1681
2282
# Start GnuTLS connection
1682
2283
try:
1683
2284
session.handshake()
1684
except gnutls.errors.GNUTLSError as error:
2285
except gnutls.Error as error:
1685
2286
logger.warning("Handshake failed: %s", error)
1686
2287
# Do not run session.bye() here: the session is not
1687
2288
# established. Just abandon the request.
1688
2289
return
1689
2290
logger.debug("Handshake succeeded")
1690
2291
1691
2292
approval_required = False
1692
2293
try:
1693
try:
1694
fpr = self.fingerprint(self.peer_certificate
1695
(session))
1696
except (TypeError,
1697
gnutls.errors.GNUTLSError) as error:
1698
logger.warning("Bad certificate: %s", error)
1699
return
1700
logger.debug("Fingerprint: %s", fpr)
1701
1702
try:
1703
client = ProxyClient(child_pipe, fpr,
2294
if gnutls.has_rawpk:
2295
fpr = b""
2296
try:
2297
key_id = self.key_id(
2298
self.peer_certificate(session))
2299
except (TypeError, gnutls.Error) as error:
2300
logger.warning("Bad certificate: %s", error)
2301
return
2302
logger.debug("Key ID: %s", key_id)
2303
2304
else:
2305
key_id = b""
2306
try:
2307
fpr = self.fingerprint(
2308
self.peer_certificate(session))
2309
except (TypeError, gnutls.Error) as error:
2310
logger.warning("Bad certificate: %s", error)
2311
return
2312
logger.debug("Fingerprint: %s", fpr)
2313
2314
try:
2315
client = ProxyClient(child_pipe, key_id, fpr,
1704
2316
self.client_address)
1705
2317
except KeyError:
1706
2318
return
1707
2319
1708
2320
if client.approval_delay:
1709
2321
delay = client.approval_delay
1710
2322
client.approvals_pending += 1
1711
2323
approval_required = True
1712
2324
1713
2325
while True:
1714
2326
if not client.enabled:
1715
2327
logger.info("Client %s is disabled",
1716
client.name)
2328
client.name)
1717
2329
if self.server.use_dbus:
1718
2330
# Emit D-Bus signal
1719
2331
client.Rejected("Disabled")
1720
2332
return
1721
2333
1722
2334
if client.approved or not client.approval_delay:
1723
#We are approved or approval is disabled
2335
# We are approved or approval is disabled
1724
2336
break
1725
2337
elif client.approved is None:
1726
2338
logger.info("Client %s needs approval",
1728
2340
if self.server.use_dbus:
1729
2341
# Emit D-Bus signal
1730
2342
client.NeedApproval(
1731
client.approval_delay_milliseconds(),
1732
client.approved_by_default)
2343
client.approval_delay.total_seconds()
2344
* 1000, client.approved_by_default)
1733
2345
else:
1734
2346
logger.warning("Client %s was not approved",
1735
2347
client.name)
1737
2349
# Emit D-Bus signal
1738
2350
client.Rejected("Denied")
1739
2351
return
1740
1741
#wait until timeout or approved
2352
2353
# wait until timeout or approved
1742
2354
time = datetime.datetime.now()
1743
2355
client.changedstate.acquire()
1744
client.changedstate.wait(
1745
float(timedelta_to_milliseconds(delay)
1746
/ 1000))
2356
client.changedstate.wait(delay.total_seconds())
1747
2357
client.changedstate.release()
1748
2358
time2 = datetime.datetime.now()
1749
2359
if (time2 - time) >= delay:
1759
2369
break
1760
2370
else:
1761
2371
delay -= time2 - time
1762
1763
sent_size = 0
1764
while sent_size < len(client.secret):
1765
try:
1766
sent = session.send(client.secret[sent_size:])
1767
except gnutls.errors.GNUTLSError as error:
1768
logger.warning("gnutls send failed",
1769
exc_info=error)
1770
return
1771
logger.debug("Sent: %d, remaining: %d",
1772
sent, len(client.secret)
1773
- (sent_size + sent))
1774
sent_size += sent
1775
2372
2373
try:
2374
session.send(client.secret)
2375
except gnutls.Error as error:
2376
logger.warning("gnutls send failed",
2377
exc_info=error)
2378
return
2379
1776
2380
logger.info("Sending secret to %s", client.name)
1777
2381
# bump the timeout using extended_timeout
1778
2382
client.bump_timeout(client.extended_timeout)
1779
2383
if self.server.use_dbus:
1780
2384
# Emit D-Bus signal
1781
2385
client.GotSecret()
1782
2386
1783
2387
finally:
1784
2388
if approval_required:
1785
2389
client.approvals_pending -= 1
1786
2390
try:
1787
2391
session.bye()
1788
except gnutls.errors.GNUTLSError as error:
2392
except gnutls.Error as error:
1789
2393
logger.warning("GnuTLS bye failed",
1790
2394
exc_info=error)
1791
2395
1792
2396
@staticmethod
1793
2397
def peer_certificate(session):
1794
"Return the peer's OpenPGP certificate as a bytestring"
1795
# If not an OpenPGP certificate...
1796
if (gnutls.library.functions
1797
.gnutls_certificate_type_get(session._c_object)
1798
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1799
# ...do the normal thing
1800
return session.peer_certificate
2398
"Return the peer's certificate as a bytestring"
2399
try:
2400
cert_type = gnutls.certificate_type_get2(session._c_object,
2401
gnutls.CTYPE_PEERS)
2402
except AttributeError:
2403
cert_type = gnutls.certificate_type_get(session._c_object)
2404
if gnutls.has_rawpk:
2405
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2406
else:
2407
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2408
# If not a valid certificate type...
2409
if cert_type not in valid_cert_types:
2410
logger.info("Cert type %r not in %r", cert_type,
2411
valid_cert_types)
2412
# ...return invalid data
2413
return b""
1801
2414
list_size = ctypes.c_uint(1)
1802
cert_list = (gnutls.library.functions
1803
.gnutls_certificate_get_peers
2415
cert_list = (gnutls.certificate_get_peers
1804
2416
(session._c_object, ctypes.byref(list_size)))
1805
2417
if not bool(cert_list) and list_size.value != 0:
1806
raise gnutls.errors.GNUTLSError("error getting peer"
1807
" certificate")
2418
raise gnutls.Error("error getting peer certificate")
1808
2419
if list_size.value == 0:
1809
2420
return None
1810
2421
cert = cert_list[0]
1811
2422
return ctypes.string_at(cert.data, cert.size)
1812
2423
2424
@staticmethod
2425
def key_id(certificate):
2426
"Convert a certificate bytestring to a hexdigit key ID"
2427
# New GnuTLS "datum" with the public key
2428
datum = gnutls.datum_t(
2429
ctypes.cast(ctypes.c_char_p(certificate),
2430
ctypes.POINTER(ctypes.c_ubyte)),
2431
ctypes.c_uint(len(certificate)))
2432
# XXX all these need to be created in the gnutls "module"
2433
# New empty GnuTLS certificate
2434
pubkey = gnutls.pubkey_t()
2435
gnutls.pubkey_init(ctypes.byref(pubkey))
2436
# Import the raw public key into the certificate
2437
gnutls.pubkey_import(pubkey,
2438
ctypes.byref(datum),
2439
gnutls.X509_FMT_DER)
2440
# New buffer for the key ID
2441
buf = ctypes.create_string_buffer(32)
2442
buf_len = ctypes.c_size_t(len(buf))
2443
# Get the key ID from the raw public key into the buffer
2444
gnutls.pubkey_get_key_id(pubkey,
2445
gnutls.KEYID_USE_SHA256,
2446
ctypes.cast(ctypes.byref(buf),
2447
ctypes.POINTER(ctypes.c_ubyte)),
2448
ctypes.byref(buf_len))
2449
# Deinit the certificate
2450
gnutls.pubkey_deinit(pubkey)
2451
2452
# Convert the buffer to a Python bytestring
2453
key_id = ctypes.string_at(buf, buf_len.value)
2454
# Convert the bytestring to hexadecimal notation
2455
hex_key_id = binascii.hexlify(key_id).upper()
2456
return hex_key_id
2457
1813
2458
@staticmethod
1814
2459
def fingerprint(openpgp):
1815
2460
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1816
2461
# New GnuTLS "datum" with the OpenPGP public key
1817
datum = (gnutls.library.types
1818
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1819
ctypes.POINTER
1820
(ctypes.c_ubyte)),
1821
ctypes.c_uint(len(openpgp))))
2462
datum = gnutls.datum_t(
2463
ctypes.cast(ctypes.c_char_p(openpgp),
2464
ctypes.POINTER(ctypes.c_ubyte)),
2465
ctypes.c_uint(len(openpgp)))
1822
2466
# New empty GnuTLS certificate
1823
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1824
(gnutls.library.functions
1825
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2467
crt = gnutls.openpgp_crt_t()
2468
gnutls.openpgp_crt_init(ctypes.byref(crt))
1826
2469
# Import the OpenPGP public key into the certificate
1827
(gnutls.library.functions
1828
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1829
gnutls.library.constants
1830
.GNUTLS_OPENPGP_FMT_RAW))
2470
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2471
gnutls.OPENPGP_FMT_RAW)
1831
2472
# Verify the self signature in the key
1832
2473
crtverify = ctypes.c_uint()
1833
(gnutls.library.functions
1834
.gnutls_openpgp_crt_verify_self(crt, 0,
1835
ctypes.byref(crtverify)))
2474
gnutls.openpgp_crt_verify_self(crt, 0,
2475
ctypes.byref(crtverify))
1836
2476
if crtverify.value != 0:
1837
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1838
raise (gnutls.errors.CertificateSecurityError
1839
("Verify failed"))
2477
gnutls.openpgp_crt_deinit(crt)
2478
raise gnutls.CertificateSecurityError(code
2479
=crtverify.value)
1840
2480
# New buffer for the fingerprint
1841
2481
buf = ctypes.create_string_buffer(20)
1842
2482
buf_len = ctypes.c_size_t()
1843
2483
# Get the fingerprint from the certificate into the buffer
1844
(gnutls.library.functions
1845
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1846
ctypes.byref(buf_len)))
2484
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2485
ctypes.byref(buf_len))
1847
2486
# Deinit the certificate
1848
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2487
gnutls.openpgp_crt_deinit(crt)
1849
2488
# Convert the buffer to a Python bytestring
1850
2489
fpr = ctypes.string_at(buf, buf_len.value)
1851
2490
# Convert the bytestring to hexadecimal notation
1855
2494
1856
2495
class MultiprocessingMixIn(object):
1857
2496
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2497
1858
2498
def sub_process_main(self, request, address):
1859
2499
try:
1860
2500
self.finish_request(request, address)
1861
2501
except Exception:
1862
2502
self.handle_error(request, address)
1863
2503
self.close_request(request)
1864
2504
1865
2505
def process_request(self, request, address):
1866
2506
"""Start a new process to process the request."""
1867
proc = multiprocessing.Process(target = self.sub_process_main,
1868
args = (request, address))
2507
proc = multiprocessing.Process(target=self.sub_process_main,
2508
args=(request, address))
1869
2509
proc.start()
1870
2510
return proc
1871
2511
1872
2512
1873
2513
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1874
2514
""" adds a pipe to the MixIn """
2515
1875
2516
def process_request(self, request, client_address):
1876
2517
"""Overrides and wraps the original process_request().
1877
2518
1878
2519
This function creates a new pipe in self.pipe
1879
2520
"""
1880
2521
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1881
2522
1882
2523
proc = MultiprocessingMixIn.process_request(self, request,
1883
2524
client_address)
1884
2525
self.child_pipe.close()
1885
2526
self.add_pipe(parent_pipe, proc)
1886
2527
1887
2528
def add_pipe(self, parent_pipe, proc):
1888
2529
"""Dummy function; override as necessary"""
1889
raise NotImplementedError
2530
raise NotImplementedError()
1890
2531
1891
2532
1892
2533
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1893
2534
socketserver.TCPServer, object):
1894
2535
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1895
2536
1896
2537
Attributes:
1897
2538
enabled: Boolean; whether this server is activated yet
1898
2539
interface: None or a network interface name (string)
1899
2540
use_ipv6: Boolean; to use IPv6 or not
1900
2541
"""
2542
1901
2543
def __init__(self, server_address, RequestHandlerClass,
1902
interface=None, use_ipv6=True):
2544
interface=None,
2545
use_ipv6=True,
2546
socketfd=None):
2547
"""If socketfd is set, use that file descriptor instead of
2548
creating a new one with socket.socket().
2549
"""
1903
2550
self.interface = interface
1904
2551
if use_ipv6:
1905
2552
self.address_family = socket.AF_INET6
2553
if socketfd is not None:
2554
# Save the file descriptor
2555
self.socketfd = socketfd
2556
# Save the original socket.socket() function
2557
self.socket_socket = socket.socket
2558
2559
# To implement --socket, we monkey patch socket.socket.
2560
#
2561
# (When socketserver.TCPServer is a new-style class, we
2562
# could make self.socket into a property instead of monkey
2563
# patching socket.socket.)
2564
#
2565
# Create a one-time-only replacement for socket.socket()
2566
@functools.wraps(socket.socket)
2567
def socket_wrapper(*args, **kwargs):
2568
# Restore original function so subsequent calls are
2569
# not affected.
2570
socket.socket = self.socket_socket
2571
del self.socket_socket
2572
# This time only, return a new socket object from the
2573
# saved file descriptor.
2574
return socket.fromfd(self.socketfd, *args, **kwargs)
2575
# Replace socket.socket() function with wrapper
2576
socket.socket = socket_wrapper
2577
# The socketserver.TCPServer.__init__ will call
2578
# socket.socket(), which might be our replacement,
2579
# socket_wrapper(), if socketfd was set.
1906
2580
socketserver.TCPServer.__init__(self, server_address,
1907
2581
RequestHandlerClass)
2582
1908
2583
def server_bind(self):
1909
2584
"""This overrides the normal server_bind() function
1910
2585
to bind to an interface if one was specified, and also NOT to
1911
2586
bind to an address or port if they were not specified."""
2587
global SO_BINDTODEVICE
1912
2588
if self.interface is not None:
1913
2589
if SO_BINDTODEVICE is None:
1914
logger.error("SO_BINDTODEVICE does not exist;"
1915
" cannot bind to interface %s",
1916
self.interface)
1917
else:
1918
try:
1919
self.socket.setsockopt(socket.SOL_SOCKET,
1920
SO_BINDTODEVICE,
1921
str(self.interface
1922
+ '\0'))
1923
except socket.error as error:
1924
if error.errno == errno.EPERM:
1925
logger.error("No permission to"
1926
" bind to interface %s",
1927
self.interface)
1928
elif error.errno == errno.ENOPROTOOPT:
1929
logger.error("SO_BINDTODEVICE not available;"
1930
" cannot bind to interface %s",
1931
self.interface)
1932
elif error.errno == errno.ENODEV:
1933
logger.error("Interface %s does not"
1934
" exist, cannot bind",
1935
self.interface)
1936
else:
1937
raise
2590
# Fall back to a hard-coded value which seems to be
2591
# common enough.
2592
logger.warning("SO_BINDTODEVICE not found, trying 25")
2593
SO_BINDTODEVICE = 25
2594
try:
2595
self.socket.setsockopt(
2596
socket.SOL_SOCKET, SO_BINDTODEVICE,
2597
(self.interface + "\0").encode("utf-8"))
2598
except socket.error as error:
2599
if error.errno == errno.EPERM:
2600
logger.error("No permission to bind to"
2601
" interface %s", self.interface)
2602
elif error.errno == errno.ENOPROTOOPT:
2603
logger.error("SO_BINDTODEVICE not available;"
2604
" cannot bind to interface %s",
2605
self.interface)
2606
elif error.errno == errno.ENODEV:
2607
logger.error("Interface %s does not exist,"
2608
" cannot bind", self.interface)
2609
else:
2610
raise
1938
2611
# Only bind(2) the socket if we really need to.
1939
2612
if self.server_address[0] or self.server_address[1]:
2613
if self.server_address[1]:
2614
self.allow_reuse_address = True
1940
2615
if not self.server_address[0]:
1941
2616
if self.address_family == socket.AF_INET6:
1942
any_address = "::" # in6addr_any
2617
any_address = "::" # in6addr_any
1943
2618
else:
1944
any_address = socket.INADDR_ANY
2619
any_address = "0.0.0.0" # INADDR_ANY
1945
2620
self.server_address = (any_address,
1946
2621
self.server_address[1])
1947
2622
elif not self.server_address[1]:
1948
self.server_address = (self.server_address[0],
1949
0)
2623
self.server_address = (self.server_address[0], 0)
1950
2624
# if self.interface:
1951
2625
# self.server_address = (self.server_address[0],
1952
2626
# 0, # port
1958
2632
1959
2633
class MandosServer(IPv6_TCPServer):
1960
2634
"""Mandos server.
1961
2635
1962
2636
Attributes:
1963
2637
clients: set of Client objects
1964
2638
gnutls_priority GnuTLS priority string
1965
2639
use_dbus: Boolean; to emit D-Bus signals or not
1966
1967
Assumes a gobject.MainLoop event loop.
2640
2641
Assumes a GLib.MainLoop event loop.
1968
2642
"""
2643
1969
2644
def __init__(self, server_address, RequestHandlerClass,
1970
interface=None, use_ipv6=True, clients=None,
1971
gnutls_priority=None, use_dbus=True):
2645
interface=None,
2646
use_ipv6=True,
2647
clients=None,
2648
gnutls_priority=None,
2649
use_dbus=True,
2650
socketfd=None):
1972
2651
self.enabled = False
1973
2652
self.clients = clients
1974
2653
if self.clients is None:
1977
2656
self.gnutls_priority = gnutls_priority
1978
2657
IPv6_TCPServer.__init__(self, server_address,
1979
2658
RequestHandlerClass,
1980
interface = interface,
1981
use_ipv6 = use_ipv6)
2659
interface=interface,
2660
use_ipv6=use_ipv6,
2661
socketfd=socketfd)
2662
1982
2663
def server_activate(self):
1983
2664
if self.enabled:
1984
2665
return socketserver.TCPServer.server_activate(self)
1985
2666
1986
2667
def enable(self):
1987
2668
self.enabled = True
1988
2669
1989
2670
def add_pipe(self, parent_pipe, proc):
1990
2671
# Call "handle_ipc" for both data and EOF events
1991
gobject.io_add_watch(parent_pipe.fileno(),
1992
gobject.IO_IN | gobject.IO_HUP,
1993
functools.partial(self.handle_ipc,
1994
parent_pipe =
1995
parent_pipe,
1996
proc = proc))
1997
1998
def handle_ipc(self, source, condition, parent_pipe=None,
1999
proc = None, client_object=None):
2672
GLib.io_add_watch(
2673
parent_pipe.fileno(),
2674
GLib.IO_IN | GLib.IO_HUP,
2675
functools.partial(self.handle_ipc,
2676
parent_pipe=parent_pipe,
2677
proc=proc))
2678
2679
def handle_ipc(self, source, condition,
2680
parent_pipe=None,
2681
proc=None,
2682
client_object=None):
2000
2683
# error, or the other end of multiprocessing.Pipe has closed
2001
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2684
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2002
2685
# Wait for other process to exit
2003
2686
proc.join()
2004
2687
return False
2005
2688
2006
2689
# Read a request from the child
2007
2690
request = parent_pipe.recv()
2008
2691
command = request[0]
2009
2692
2010
2693
if command == 'init':
2011
fpr = request[1]
2012
address = request[2]
2013
2014
for c in self.clients.itervalues():
2015
if c.fingerprint == fpr:
2694
key_id = request[1].decode("ascii")
2695
fpr = request[2].decode("ascii")
2696
address = request[3]
2697
2698
for c in self.clients.values():
2699
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2700
continue
2701
if key_id and c.key_id == key_id:
2702
client = c
2703
break
2704
if fpr and c.fingerprint == fpr:
2016
2705
client = c
2017
2706
break
2018
2707
else:
2019
logger.info("Client not found for fingerprint: %s, ad"
2020
"dress: %s", fpr, address)
2708
logger.info("Client not found for key ID: %s, address"
2709
": %s", key_id or fpr, address)
2021
2710
if self.use_dbus:
2022
2711
# Emit D-Bus signal
2023
mandos_dbus_service.ClientNotFound(fpr,
2712
mandos_dbus_service.ClientNotFound(key_id or fpr,
2024
2713
address[0])
2025
2714
parent_pipe.send(False)
2026
2715
return False
2027
2028
gobject.io_add_watch(parent_pipe.fileno(),
2029
gobject.IO_IN | gobject.IO_HUP,
2030
functools.partial(self.handle_ipc,
2031
parent_pipe =
2032
parent_pipe,
2033
proc = proc,
2034
client_object =
2035
client))
2716
2717
GLib.io_add_watch(
2718
parent_pipe.fileno(),
2719
GLib.IO_IN | GLib.IO_HUP,
2720
functools.partial(self.handle_ipc,
2721
parent_pipe=parent_pipe,
2722
proc=proc,
2723
client_object=client))
2036
2724
parent_pipe.send(True)
2037
2725
# remove the old hook in favor of the new above hook on
2038
2726
# same fileno
2041
2729
funcname = request[1]
2042
2730
args = request[2]
2043
2731
kwargs = request[3]
2044
2732
2045
2733
parent_pipe.send(('data', getattr(client_object,
2046
2734
funcname)(*args,
2047
**kwargs)))
2048
2735
**kwargs)))
2736
2049
2737
if command == 'getattr':
2050
2738
attrname = request[1]
2051
if callable(client_object.__getattribute__(attrname)):
2052
parent_pipe.send(('function',))
2739
if isinstance(client_object.__getattribute__(attrname),
2740
collections.Callable):
2741
parent_pipe.send(('function', ))
2053
2742
else:
2054
parent_pipe.send(('data', client_object
2055
.__getattribute__(attrname)))
2056
2743
parent_pipe.send((
2744
'data', client_object.__getattribute__(attrname)))
2745
2057
2746
if command == 'setattr':
2058
2747
attrname = request[1]
2059
2748
value = request[2]
2060
2749
setattr(client_object, attrname, value)
2061
2750
2062
2751
return True
2063
2752
2064
2753
2754
def rfc3339_duration_to_delta(duration):
2755
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2756
2757
>>> rfc3339_duration_to_delta("P7D")
2758
datetime.timedelta(7)
2759
>>> rfc3339_duration_to_delta("PT60S")
2760
datetime.timedelta(0, 60)
2761
>>> rfc3339_duration_to_delta("PT60M")
2762
datetime.timedelta(0, 3600)
2763
>>> rfc3339_duration_to_delta("PT24H")
2764
datetime.timedelta(1)
2765
>>> rfc3339_duration_to_delta("P1W")
2766
datetime.timedelta(7)
2767
>>> rfc3339_duration_to_delta("PT5M30S")
2768
datetime.timedelta(0, 330)
2769
>>> rfc3339_duration_to_delta("P1DT3M20S")
2770
datetime.timedelta(1, 200)
2771
"""
2772
2773
# Parsing an RFC 3339 duration with regular expressions is not
2774
# possible - there would have to be multiple places for the same
2775
# values, like seconds. The current code, while more esoteric, is
2776
# cleaner without depending on a parsing library. If Python had a
2777
# built-in library for parsing we would use it, but we'd like to
2778
# avoid excessive use of external libraries.
2779
2780
# New type for defining tokens, syntax, and semantics all-in-one
2781
Token = collections.namedtuple("Token", (
2782
"regexp", # To match token; if "value" is not None, must have
2783
# a "group" containing digits
2784
"value", # datetime.timedelta or None
2785
"followers")) # Tokens valid after this token
2786
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2787
# the "duration" ABNF definition in RFC 3339, Appendix A.
2788
token_end = Token(re.compile(r"$"), None, frozenset())
2789
token_second = Token(re.compile(r"(\d+)S"),
2790
datetime.timedelta(seconds=1),
2791
frozenset((token_end, )))
2792
token_minute = Token(re.compile(r"(\d+)M"),
2793
datetime.timedelta(minutes=1),
2794
frozenset((token_second, token_end)))
2795
token_hour = Token(re.compile(r"(\d+)H"),
2796
datetime.timedelta(hours=1),
2797
frozenset((token_minute, token_end)))
2798
token_time = Token(re.compile(r"T"),
2799
None,
2800
frozenset((token_hour, token_minute,
2801
token_second)))
2802
token_day = Token(re.compile(r"(\d+)D"),
2803
datetime.timedelta(days=1),
2804
frozenset((token_time, token_end)))
2805
token_month = Token(re.compile(r"(\d+)M"),
2806
datetime.timedelta(weeks=4),
2807
frozenset((token_day, token_end)))
2808
token_year = Token(re.compile(r"(\d+)Y"),
2809
datetime.timedelta(weeks=52),
2810
frozenset((token_month, token_end)))
2811
token_week = Token(re.compile(r"(\d+)W"),
2812
datetime.timedelta(weeks=1),
2813
frozenset((token_end, )))
2814
token_duration = Token(re.compile(r"P"), None,
2815
frozenset((token_year, token_month,
2816
token_day, token_time,
2817
token_week)))
2818
# Define starting values:
2819
# Value so far
2820
value = datetime.timedelta()
2821
found_token = None
2822
# Following valid tokens
2823
followers = frozenset((token_duration, ))
2824
# String left to parse
2825
s = duration
2826
# Loop until end token is found
2827
while found_token is not token_end:
2828
# Search for any currently valid tokens
2829
for token in followers:
2830
match = token.regexp.match(s)
2831
if match is not None:
2832
# Token found
2833
if token.value is not None:
2834
# Value found, parse digits
2835
factor = int(match.group(1), 10)
2836
# Add to value so far
2837
value += factor * token.value
2838
# Strip token from string
2839
s = token.regexp.sub("", s, 1)
2840
# Go to found token
2841
found_token = token
2842
# Set valid next tokens
2843
followers = found_token.followers
2844
break
2845
else:
2846
# No currently valid tokens were found
2847
raise ValueError("Invalid RFC 3339 duration: {!r}"
2848
.format(duration))
2849
# End token found
2850
return value
2851
2852
2065
2853
def string_to_delta(interval):
2066
2854
"""Parse a string and return a datetime.timedelta
2067
2855
2068
2856
>>> string_to_delta('7d')
2069
2857
datetime.timedelta(7)
2070
2858
>>> string_to_delta('60s')
2078
2866
>>> string_to_delta('5m 30s')
2079
2867
datetime.timedelta(0, 330)
2080
2868
"""
2869
2870
try:
2871
return rfc3339_duration_to_delta(interval)
2872
except ValueError:
2873
pass
2874
2081
2875
timevalue = datetime.timedelta(0)
2082
2876
for s in interval.split():
2083
2877
try:
2084
suffix = unicode(s[-1])
2878
suffix = s[-1]
2085
2879
value = int(s[:-1])
2086
2880
if suffix == "d":
2087
2881
delta = datetime.timedelta(value)
2094
2888
elif suffix == "w":
2095
2889
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2096
2890
else:
2097
raise ValueError("Unknown suffix {0!r}"
2098
.format(suffix))
2099
except (ValueError, IndexError) as e:
2891
raise ValueError("Unknown suffix {!r}".format(suffix))
2892
except IndexError as e:
2100
2893
raise ValueError(*(e.args))
2101
2894
timevalue += delta
2102
2895
return timevalue
2103
2896
2104
2897
2105
def daemon(nochdir = False, noclose = False):
2898
def daemon(nochdir=False, noclose=False):
2106
2899
"""See daemon(3). Standard BSD Unix function.
2107
2900
2108
2901
This should really exist as os.daemon, but it doesn't (yet)."""
2109
2902
if os.fork():
2110
2903
sys.exit()
2118
2911
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2119
2912
if not stat.S_ISCHR(os.fstat(null).st_mode):
2120
2913
raise OSError(errno.ENODEV,
2121
"{0} not a character device"
2914
"{} not a character device"
2122
2915
.format(os.devnull))
2123
2916
os.dup2(null, sys.stdin.fileno())
2124
2917
os.dup2(null, sys.stdout.fileno())
2128
2921
2129
2922
2130
2923
def main():
2131
2924
2132
2925
##################################################################
2133
2926
# Parsing of options, both command line and config file
2134
2927
2135
2928
parser = argparse.ArgumentParser()
2136
2929
parser.add_argument("-v", "--version", action="version",
2137
version = "%(prog)s {0}".format(version),
2930
version="%(prog)s {}".format(version),
2138
2931
help="show version number and exit")
2139
2932
parser.add_argument("-i", "--interface", metavar="IF",
2140
2933
help="Bind to interface IF")
2146
2939
help="Run self-test")
2147
2940
parser.add_argument("--debug", action="store_true",
2148
2941
help="Debug mode; run in foreground and log"
2149
" to terminal")
2942
" to terminal", default=None)
2150
2943
parser.add_argument("--debuglevel", metavar="LEVEL",
2151
2944
help="Debug level for stdout output")
2152
2945
parser.add_argument("--priority", help="GnuTLS"
2159
2952
" files")
2160
2953
parser.add_argument("--no-dbus", action="store_false",
2161
2954
dest="use_dbus", help="Do not provide D-Bus"
2162
" system bus interface")
2955
" system bus interface", default=None)
2163
2956
parser.add_argument("--no-ipv6", action="store_false",
2164
dest="use_ipv6", help="Do not use IPv6")
2957
dest="use_ipv6", help="Do not use IPv6",
2958
default=None)
2165
2959
parser.add_argument("--no-restore", action="store_false",
2166
2960
dest="restore", help="Do not restore stored"
2167
" state")
2961
" state", default=None)
2962
parser.add_argument("--socket", type=int,
2963
help="Specify a file descriptor to a network"
2964
" socket to use instead of creating one")
2168
2965
parser.add_argument("--statedir", metavar="DIR",
2169
2966
help="Directory to save/restore state in")
2170
2967
parser.add_argument("--foreground", action="store_true",
2968
help="Run in foreground", default=None)
2969
parser.add_argument("--no-zeroconf", action="store_false",
2970
dest="zeroconf", help="Do not use Zeroconf",
2971
default=None)
2972
2171
2973
options = parser.parse_args()
2172
2974
2173
2975
if options.check:
2174
2976
import doctest
2175
doctest.testmod()
2176
sys.exit()
2177
2977
fail_count, test_count = doctest.testmod()
2978
sys.exit(os.EX_OK if fail_count == 0 else 1)
2979
2178
2980
# Default values for config file for server-global settings
2179
server_defaults = { "interface": "",
2180
"address": "",
2181
"port": "",
2182
"debug": "False",
2183
"priority":
2184
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2185
"servicename": "Mandos",
2186
"use_dbus": "True",
2187
"use_ipv6": "True",
2188
"debuglevel": "",
2189
"restore": "True",
2190
"statedir": "/var/lib/mandos"
2191
}
2192
2981
if gnutls.has_rawpk:
2982
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2983
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2984
else:
2985
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2986
":+SIGN-DSA-SHA256")
2987
server_defaults = {"interface": "",
2988
"address": "",
2989
"port": "",
2990
"debug": "False",
2991
"priority": priority,
2992
"servicename": "Mandos",
2993
"use_dbus": "True",
2994
"use_ipv6": "True",
2995
"debuglevel": "",
2996
"restore": "True",
2997
"socket": "",
2998
"statedir": "/var/lib/mandos",
2999
"foreground": "False",
3000
"zeroconf": "True",
3001
}
3002
del priority
3003
2193
3004
# Parse config file for server-global settings
2194
server_config = configparser.SafeConfigParser(server_defaults)
3005
server_config = configparser.ConfigParser(server_defaults)
2195
3006
del server_defaults
2196
server_config.read(os.path.join(options.configdir,
2197
"mandos.conf"))
2198
# Convert the SafeConfigParser object to a dict
3007
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3008
# Convert the ConfigParser object to a dict
2199
3009
server_settings = server_config.defaults()
2200
3010
# Use the appropriate methods on the non-string config options
2201
for option in ("debug", "use_dbus", "use_ipv6"):
3011
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3012
"foreground", "zeroconf"):
2202
3013
server_settings[option] = server_config.getboolean("DEFAULT",
2203
3014
option)
2204
3015
if server_settings["port"]:
2205
3016
server_settings["port"] = server_config.getint("DEFAULT",
2206
3017
"port")
3018
if server_settings["socket"]:
3019
server_settings["socket"] = server_config.getint("DEFAULT",
3020
"socket")
3021
# Later, stdin will, and stdout and stderr might, be dup'ed
3022
# over with an opened os.devnull. But we don't want this to
3023
# happen with a supplied network socket.
3024
if 0 <= server_settings["socket"] <= 2:
3025
server_settings["socket"] = os.dup(server_settings
3026
["socket"])
2207
3027
del server_config
2208
3028
2209
3029
# Override the settings from the config file with command line
2210
3030
# options, if set.
2211
3031
for option in ("interface", "address", "port", "debug",
2212
"priority", "servicename", "configdir",
2213
"use_dbus", "use_ipv6", "debuglevel", "restore",
2214
"statedir"):
3032
"priority", "servicename", "configdir", "use_dbus",
3033
"use_ipv6", "debuglevel", "restore", "statedir",
3034
"socket", "foreground", "zeroconf"):
2215
3035
value = getattr(options, option)
2216
3036
if value is not None:
2217
3037
server_settings[option] = value
2218
3038
del options
2219
3039
# Force all strings to be unicode
2220
3040
for option in server_settings.keys():
2221
if type(server_settings[option]) is str:
2222
server_settings[option] = unicode(server_settings[option])
3041
if isinstance(server_settings[option], bytes):
3042
server_settings[option] = (server_settings[option]
3043
.decode("utf-8"))
3044
# Force all boolean options to be boolean
3045
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3046
"foreground", "zeroconf"):
3047
server_settings[option] = bool(server_settings[option])
3048
# Debug implies foreground
3049
if server_settings["debug"]:
3050
server_settings["foreground"] = True
2223
3051
# Now we have our good server settings in "server_settings"
2224
3052
2225
3053
##################################################################
2226
3054
3055
if (not server_settings["zeroconf"]
3056
and not (server_settings["port"]
3057
or server_settings["socket"] != "")):
3058
parser.error("Needs port or socket to work without Zeroconf")
3059
2227
3060
# For convenience
2228
3061
debug = server_settings["debug"]
2229
3062
debuglevel = server_settings["debuglevel"]
2231
3064
use_ipv6 = server_settings["use_ipv6"]
2232
3065
stored_state_path = os.path.join(server_settings["statedir"],
2233
3066
stored_state_file)
2234
3067
foreground = server_settings["foreground"]
3068
zeroconf = server_settings["zeroconf"]
3069
2235
3070
if debug:
2236
3071
initlogger(debug, logging.DEBUG)
2237
3072
else:
2240
3075
else:
2241
3076
level = getattr(logging, debuglevel.upper())
2242
3077
initlogger(debug, level)
2243
3078
2244
3079
if server_settings["servicename"] != "Mandos":
2245
syslogger.setFormatter(logging.Formatter
2246
('Mandos ({0}) [%(process)d]:'
2247
' %(levelname)s: %(message)s'
2248
.format(server_settings
2249
["servicename"])))
2250
3080
syslogger.setFormatter(
3081
logging.Formatter('Mandos ({}) [%(process)d]:'
3082
' %(levelname)s: %(message)s'.format(
3083
server_settings["servicename"])))
3084
2251
3085
# Parse config file with clients
2252
client_config = configparser.SafeConfigParser(Client
2253
.client_defaults)
3086
client_config = configparser.ConfigParser(Client.client_defaults)
2254
3087
client_config.read(os.path.join(server_settings["configdir"],
2255
3088
"clients.conf"))
2256
3089
2257
3090
global mandos_dbus_service
2258
3091
mandos_dbus_service = None
2259
2260
tcp_server = MandosServer((server_settings["address"],
2261
server_settings["port"]),
2262
ClientHandler,
2263
interface=(server_settings["interface"]
2264
or None),
2265
use_ipv6=use_ipv6,
2266
gnutls_priority=
2267
server_settings["priority"],
2268
use_dbus=use_dbus)
2269
if not debug:
2270
pidfilename = "/var/run/mandos.pid"
3092
3093
socketfd = None
3094
if server_settings["socket"] != "":
3095
socketfd = server_settings["socket"]
3096
tcp_server = MandosServer(
3097
(server_settings["address"], server_settings["port"]),
3098
ClientHandler,
3099
interface=(server_settings["interface"] or None),
3100
use_ipv6=use_ipv6,
3101
gnutls_priority=server_settings["priority"],
3102
use_dbus=use_dbus,
3103
socketfd=socketfd)
3104
if not foreground:
3105
pidfilename = "/run/mandos.pid"
3106
if not os.path.isdir("/run/."):
3107
pidfilename = "/var/run/mandos.pid"
3108
pidfile = None
2271
3109
try:
2272
pidfile = open(pidfilename, "w")
3110
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2273
3111
except IOError as e:
2274
3112
logger.error("Could not open file %r", pidfilename,
2275
3113
exc_info=e)
2276
2277
for name in ("_mandos", "mandos", "nobody"):
3114
3115
for name, group in (("_mandos", "_mandos"),
3116
("mandos", "mandos"),
3117
("nobody", "nogroup")):
2278
3118
try:
2279
3119
uid = pwd.getpwnam(name).pw_uid
2280
gid = pwd.getpwnam(name).pw_gid
3120
gid = pwd.getpwnam(group).pw_gid
2281
3121
break
2282
3122
except KeyError:
2283
3123
continue
2287
3127
try:
2288
3128
os.setgid(gid)
2289
3129
os.setuid(uid)
3130
if debug:
3131
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3132
gid))
2290
3133
except OSError as error:
3134
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3135
.format(uid, gid, os.strerror(error.errno)))
2291
3136
if error.errno != errno.EPERM:
2292
raise error
2293
3137
raise
3138
2294
3139
if debug:
2295
3140
# Enable all possible GnuTLS debugging
2296
3141
2297
3142
# "Use a log level over 10 to enable all debugging options."
2298
3143
# - GnuTLS manual
2299
gnutls.library.functions.gnutls_global_set_log_level(11)
2300
2301
@gnutls.library.types.gnutls_log_func
3144
gnutls.global_set_log_level(11)
3145
3146
@gnutls.log_func
2302
3147
def debug_gnutls(level, string):
2303
3148
logger.debug("GnuTLS: %s", string[:-1])
2304
2305
(gnutls.library.functions
2306
.gnutls_global_set_log_function(debug_gnutls))
2307
3149
3150
gnutls.global_set_log_function(debug_gnutls)
3151
2308
3152
# Redirect stdin so all checkers get /dev/null
2309
3153
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2310
3154
os.dup2(null, sys.stdin.fileno())
2311
3155
if null > 2:
2312
3156
os.close(null)
2313
3157
2314
3158
# Need to fork before connecting to D-Bus
2315
if not debug:
3159
if not foreground:
2316
3160
# Close all input and output, do double fork, etc.
2317
3161
daemon()
2318
2319
gobject.threads_init()
2320
3162
3163
if gi.version_info < (3, 10, 2):
3164
# multiprocessing will use threads, so before we use GLib we
3165
# need to inform GLib that threads will be used.
3166
GLib.threads_init()
3167
2321
3168
global main_loop
2322
3169
# From the Avahi example code
2323
3170
DBusGMainLoop(set_as_default=True)
2324
main_loop = gobject.MainLoop()
3171
main_loop = GLib.MainLoop()
2325
3172
bus = dbus.SystemBus()
2326
3173
# End of Avahi example code
2327
3174
if use_dbus:
2328
3175
try:
2329
3176
bus_name = dbus.service.BusName("se.recompile.Mandos",
2330
bus, do_not_queue=True)
2331
old_bus_name = (dbus.service.BusName
2332
("se.bsnet.fukt.Mandos", bus,
2333
do_not_queue=True))
2334
except dbus.exceptions.NameExistsException as e:
3177
bus,
3178
do_not_queue=True)
3179
old_bus_name = dbus.service.BusName(
3180
"se.bsnet.fukt.Mandos", bus,
3181
do_not_queue=True)
3182
except dbus.exceptions.DBusException as e:
2335
3183
logger.error("Disabling D-Bus:", exc_info=e)
2336
3184
use_dbus = False
2337
3185
server_settings["use_dbus"] = False
2338
3186
tcp_server.use_dbus = False
2339
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2340
service = AvahiServiceToSyslog(name =
2341
server_settings["servicename"],
2342
servicetype = "_mandos._tcp",
2343
protocol = protocol, bus = bus)
2344
if server_settings["interface"]:
2345
service.interface = (if_nametoindex
2346
(str(server_settings["interface"])))
2347
3187
if zeroconf:
3188
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3189
service = AvahiServiceToSyslog(
3190
name=server_settings["servicename"],
3191
servicetype="_mandos._tcp",
3192
protocol=protocol,
3193
bus=bus)
3194
if server_settings["interface"]:
3195
service.interface = if_nametoindex(
3196
server_settings["interface"].encode("utf-8"))
3197
2348
3198
global multiprocessing_manager
2349
3199
multiprocessing_manager = multiprocessing.Manager()
2350
3200
2351
3201
client_class = Client
2352
3202
if use_dbus:
2353
client_class = functools.partial(ClientDBus, bus = bus)
2354
3203
client_class = functools.partial(ClientDBus, bus=bus)
3204
2355
3205
client_settings = Client.config_parser(client_config)
2356
3206
old_client_settings = {}
2357
3207
clients_data = {}
2358
3208
3209
# This is used to redirect stdout and stderr for checker processes
3210
global wnull
3211
wnull = open(os.devnull, "w") # A writable /dev/null
3212
# Only used if server is running in foreground but not in debug
3213
# mode
3214
if debug or not foreground:
3215
wnull.close()
3216
2359
3217
# Get client data and settings from last running state.
2360
3218
if server_settings["restore"]:
2361
3219
try:
2362
3220
with open(stored_state_path, "rb") as stored_state:
2363
clients_data, old_client_settings = (pickle.load
2364
(stored_state))
3221
if sys.version_info.major == 2:
3222
clients_data, old_client_settings = pickle.load(
3223
stored_state)
3224
else:
3225
bytes_clients_data, bytes_old_client_settings = (
3226
pickle.load(stored_state, encoding="bytes"))
3227
# Fix bytes to strings
3228
# clients_data
3229
# .keys()
3230
clients_data = {(key.decode("utf-8")
3231
if isinstance(key, bytes)
3232
else key): value
3233
for key, value in
3234
bytes_clients_data.items()}
3235
del bytes_clients_data
3236
for key in clients_data:
3237
value = {(k.decode("utf-8")
3238
if isinstance(k, bytes) else k): v
3239
for k, v in
3240
clients_data[key].items()}
3241
clients_data[key] = value
3242
# .client_structure
3243
value["client_structure"] = [
3244
(s.decode("utf-8")
3245
if isinstance(s, bytes)
3246
else s) for s in
3247
value["client_structure"]]
3248
# .name & .host
3249
for k in ("name", "host"):
3250
if isinstance(value[k], bytes):
3251
value[k] = value[k].decode("utf-8")
3252
if "key_id" not in value:
3253
value["key_id"] = ""
3254
elif "fingerprint" not in value:
3255
value["fingerprint"] = ""
3256
# old_client_settings
3257
# .keys()
3258
old_client_settings = {
3259
(key.decode("utf-8")
3260
if isinstance(key, bytes)
3261
else key): value
3262
for key, value in
3263
bytes_old_client_settings.items()}
3264
del bytes_old_client_settings
3265
# .host
3266
for value in old_client_settings.values():
3267
if isinstance(value["host"], bytes):
3268
value["host"] = (value["host"]
3269
.decode("utf-8"))
2365
3270
os.remove(stored_state_path)
2366
3271
except IOError as e:
2367
3272
if e.errno == errno.ENOENT:
2368
logger.warning("Could not load persistent state: {0}"
2369
.format(os.strerror(e.errno)))
3273
logger.warning("Could not load persistent state:"
3274
" {}".format(os.strerror(e.errno)))
2370
3275
else:
2371
3276
logger.critical("Could not load persistent state:",
2372
3277
exc_info=e)
2373
3278
raise
2374
3279
except EOFError as e:
2375
3280
logger.warning("Could not load persistent state: "
2376
"EOFError:", exc_info=e)
2377
3281
"EOFError:",
3282
exc_info=e)
3283
2378
3284
with PGPEngine() as pgp:
2379
for client_name, client in clients_data.iteritems():
3285
for client_name, client in clients_data.items():
3286
# Skip removed clients
3287
if client_name not in client_settings:
3288
continue
3289
2380
3290
# Decide which value to use after restoring saved state.
2381
3291
# We have three different values: Old config file,
2382
3292
# new config file, and saved state.
2387
3297
# For each value in new config, check if it
2388
3298
# differs from the old config value (Except for
2389
3299
# the "secret" attribute)
2390
if (name != "secret" and
2391
value != old_client_settings[client_name]
2392
[name]):
3300
if (name != "secret"
3301
and (value !=
3302
old_client_settings[client_name][name])):
2393
3303
client[name] = value
2394
3304
except KeyError:
2395
3305
pass
2396
3306
2397
3307
# Clients who has passed its expire date can still be
2398
# enabled if its last checker was successful. Clients
3308
# enabled if its last checker was successful. A Client
2399
3309
# whose checker succeeded before we stored its state is
2400
3310
# assumed to have successfully run all checkers during
2401
3311
# downtime.
2403
3313
if datetime.datetime.utcnow() >= client["expires"]:
2404
3314
if not client["last_checked_ok"]:
2405
3315
logger.warning(
2406
"disabling client {0} - Client never "
2407
"performed a successful checker"
2408
.format(client_name))
3316
"disabling client {} - Client never "
3317
"performed a successful checker".format(
3318
client_name))
2409
3319
client["enabled"] = False
2410
3320
elif client["last_checker_status"] != 0:
2411
3321
logger.warning(
2412
"disabling client {0} - Client "
2413
"last checker failed with error code {1}"
2414
.format(client_name,
2415
client["last_checker_status"]))
3322
"disabling client {} - Client last"
3323
" checker failed with error code"
3324
" {}".format(
3325
client_name,
3326
client["last_checker_status"]))
2416
3327
client["enabled"] = False
2417
3328
else:
2418
client["expires"] = (datetime.datetime
2419
.utcnow()
2420
+ client["timeout"])
3329
client["expires"] = (
3330
datetime.datetime.utcnow()
3331
+ client["timeout"])
2421
3332
logger.debug("Last checker succeeded,"
2422
" keeping {0} enabled"
2423
.format(client_name))
3333
" keeping {} enabled".format(
3334
client_name))
2424
3335
try:
2425
client["secret"] = (
2426
pgp.decrypt(client["encrypted_secret"],
2427
client_settings[client_name]
2428
["secret"]))
3336
client["secret"] = pgp.decrypt(
3337
client["encrypted_secret"],
3338
client_settings[client_name]["secret"])
2429
3339
except PGPError:
2430
3340
# If decryption fails, we use secret from new settings
2431
logger.debug("Failed to decrypt {0} old secret"
2432
.format(client_name))
2433
client["secret"] = (
2434
client_settings[client_name]["secret"])
2435
3341
logger.debug("Failed to decrypt {} old secret".format(
3342
client_name))
3343
client["secret"] = (client_settings[client_name]
3344
["secret"])
3345
2436
3346
# Add/remove clients based on new changes made to config
2437
3347
for client_name in (set(old_client_settings)
2438
3348
- set(client_settings)):
2440
3350
for client_name in (set(client_settings)
2441
3351
- set(old_client_settings)):
2442
3352
clients_data[client_name] = client_settings[client_name]
2443
3353
2444
3354
# Create all client objects
2445
for client_name, client in clients_data.iteritems():
3355
for client_name, client in clients_data.items():
2446
3356
tcp_server.clients[client_name] = client_class(
2447
name = client_name, settings = client)
2448
3357
name=client_name,
3358
settings=client,
3359
server_settings=server_settings)
3360
2449
3361
if not tcp_server.clients:
2450
3362
logger.warning("No clients defined")
2451
2452
if not debug:
2453
try:
2454
with pidfile:
2455
pid = os.getpid()
2456
pidfile.write(str(pid) + "\n".encode("utf-8"))
2457
del pidfile
2458
except IOError:
2459
logger.error("Could not write to file %r with PID %d",
2460
pidfilename, pid)
2461
except NameError:
2462
# "pidfile" was never created
2463
pass
3363
3364
if not foreground:
3365
if pidfile is not None:
3366
pid = os.getpid()
3367
try:
3368
with pidfile:
3369
print(pid, file=pidfile)
3370
except IOError:
3371
logger.error("Could not write to file %r with PID %d",
3372
pidfilename, pid)
3373
del pidfile
2464
3374
del pidfilename
2465
2466
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2467
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2468
3375
3376
for termsig in (signal.SIGHUP, signal.SIGTERM):
3377
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3378
lambda: main_loop.quit() and False)
3379
2469
3380
if use_dbus:
2470
@alternate_dbus_interfaces({"se.recompile.Mandos":
2471
"se.bsnet.fukt.Mandos"})
2472
class MandosDBusService(DBusObjectWithProperties):
3381
3382
@alternate_dbus_interfaces(
3383
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3384
class MandosDBusService(DBusObjectWithObjectManager):
2473
3385
"""A D-Bus proxy object"""
3386
2474
3387
def __init__(self):
2475
3388
dbus.service.Object.__init__(self, bus, "/")
3389
2476
3390
_interface = "se.recompile.Mandos"
2477
2478
@dbus_interface_annotations(_interface)
2479
def _foo(self):
2480
return { "org.freedesktop.DBus.Property"
2481
".EmitsChangedSignal":
2482
"false"}
2483
3391
2484
3392
@dbus.service.signal(_interface, signature="o")
2485
3393
def ClientAdded(self, objpath):
2486
3394
"D-Bus signal"
2487
3395
pass
2488
3396
2489
3397
@dbus.service.signal(_interface, signature="ss")
2490
def ClientNotFound(self, fingerprint, address):
3398
def ClientNotFound(self, key_id, address):
2491
3399
"D-Bus signal"
2492
3400
pass
2493
3401
3402
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3403
"true"})
2494
3404
@dbus.service.signal(_interface, signature="os")
2495
3405
def ClientRemoved(self, objpath, name):
2496
3406
"D-Bus signal"
2497
3407
pass
2498
3408
3409
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3410
"true"})
2499
3411
@dbus.service.method(_interface, out_signature="ao")
2500
3412
def GetAllClients(self):
2501
3413
"D-Bus method"
2502
return dbus.Array(c.dbus_object_path
2503
for c in
2504
tcp_server.clients.itervalues())
2505
3414
return dbus.Array(c.dbus_object_path for c in
3415
tcp_server.clients.values())
3416
3417
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3418
"true"})
2506
3419
@dbus.service.method(_interface,
2507
3420
out_signature="a{oa{sv}}")
2508
3421
def GetAllClientsWithProperties(self):
2509
3422
"D-Bus method"
2510
3423
return dbus.Dictionary(
2511
((c.dbus_object_path, c.GetAll(""))
2512
for c in tcp_server.clients.itervalues()),
3424
{c.dbus_object_path: c.GetAll(
3425
"se.recompile.Mandos.Client")
3426
for c in tcp_server.clients.values()},
2513
3427
signature="oa{sv}")
2514
3428
2515
3429
@dbus.service.method(_interface, in_signature="o")
2516
3430
def RemoveClient(self, object_path):
2517
3431
"D-Bus method"
2518
for c in tcp_server.clients.itervalues():
3432
for c in tcp_server.clients.values():
2519
3433
if c.dbus_object_path == object_path:
2520
3434
del tcp_server.clients[c.name]
2521
3435
c.remove_from_connection()
2522
# Don't signal anything except ClientRemoved
3436
# Don't signal the disabling
2523
3437
c.disable(quiet=True)
2524
# Emit D-Bus signal
2525
self.ClientRemoved(object_path, c.name)
3438
# Emit D-Bus signal for removal
3439
self.client_removed_signal(c)
2526
3440
return
2527
3441
raise KeyError(object_path)
2528
3442
2529
3443
del _interface
2530
3444
3445
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3446
out_signature="a{oa{sa{sv}}}")
3447
def GetManagedObjects(self):
3448
"""D-Bus method"""
3449
return dbus.Dictionary(
3450
{client.dbus_object_path:
3451
dbus.Dictionary(
3452
{interface: client.GetAll(interface)
3453
for interface in
3454
client._get_all_interface_names()})
3455
for client in tcp_server.clients.values()})
3456
3457
def client_added_signal(self, client):
3458
"""Send the new standard signal and the old signal"""
3459
if use_dbus:
3460
# New standard signal
3461
self.InterfacesAdded(
3462
client.dbus_object_path,
3463
dbus.Dictionary(
3464
{interface: client.GetAll(interface)
3465
for interface in
3466
client._get_all_interface_names()}))
3467
# Old signal
3468
self.ClientAdded(client.dbus_object_path)
3469
3470
def client_removed_signal(self, client):
3471
"""Send the new standard signal and the old signal"""
3472
if use_dbus:
3473
# New standard signal
3474
self.InterfacesRemoved(
3475
client.dbus_object_path,
3476
client._get_all_interface_names())
3477
# Old signal
3478
self.ClientRemoved(client.dbus_object_path,
3479
client.name)
3480
2531
3481
mandos_dbus_service = MandosDBusService()
2532
3482
3483
# Save modules to variables to exempt the modules from being
3484
# unloaded before the function registered with atexit() is run.
3485
mp = multiprocessing
3486
wn = wnull
3487
2533
3488
def cleanup():
2534
3489
"Cleanup function; run on exit"
2535
service.cleanup()
2536
2537
multiprocessing.active_children()
3490
if zeroconf:
3491
service.cleanup()
3492
3493
mp.active_children()
3494
wn.close()
2538
3495
if not (tcp_server.clients or client_settings):
2539
3496
return
2540
3497
2541
3498
# Store client before exiting. Secrets are encrypted with key
2542
3499
# based on what config file has. If config file is
2543
3500
# removed/edited, old secret will thus be unrecovable.
2544
3501
clients = {}
2545
3502
with PGPEngine() as pgp:
2546
for client in tcp_server.clients.itervalues():
3503
for client in tcp_server.clients.values():
2547
3504
key = client_settings[client.name]["secret"]
2548
3505
client.encrypted_secret = pgp.encrypt(client.secret,
2549
3506
key)
2550
3507
client_dict = {}
2551
3508
2552
3509
# A list of attributes that can not be pickled
2553
3510
# + secret.
2554
exclude = set(("bus", "changedstate", "secret",
2555
"checker"))
2556
for name, typ in (inspect.getmembers
2557
(dbus.service.Object)):
3511
exclude = {"bus", "changedstate", "secret",
3512
"checker", "server_settings"}
3513
for name, typ in inspect.getmembers(dbus.service
3514
.Object):
2558
3515
exclude.add(name)
2559
3516
2560
3517
client_dict["encrypted_secret"] = (client
2561
3518
.encrypted_secret)
2562
3519
for attr in client.client_structure:
2563
3520
if attr not in exclude:
2564
3521
client_dict[attr] = getattr(client, attr)
2565
3522
2566
3523
clients[client.name] = client_dict
2567
3524
del client_settings[client.name]["secret"]
2568
3525
2569
3526
try:
2570
with (tempfile.NamedTemporaryFile
2571
(mode='wb', suffix=".pickle", prefix='clients-',
2572
dir=os.path.dirname(stored_state_path),
2573
delete=False)) as stored_state:
2574
pickle.dump((clients, client_settings), stored_state)
2575
tempname=stored_state.name
3527
with tempfile.NamedTemporaryFile(
3528
mode='wb',
3529
suffix=".pickle",
3530
prefix='clients-',
3531
dir=os.path.dirname(stored_state_path),
3532
delete=False) as stored_state:
3533
pickle.dump((clients, client_settings), stored_state,
3534
protocol=2)
3535
tempname = stored_state.name
2576
3536
os.rename(tempname, stored_state_path)
2577
3537
except (IOError, OSError) as e:
2578
3538
if not debug:
2581
3541
except NameError:
2582
3542
pass
2583
3543
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2584
logger.warning("Could not save persistent state: {0}"
3544
logger.warning("Could not save persistent state: {}"
2585
3545
.format(os.strerror(e.errno)))
2586
3546
else:
2587
3547
logger.warning("Could not save persistent state:",
2588
3548
exc_info=e)
2589
raise e
2590
3549
raise
3550
2591
3551
# Delete all clients, and settings from config
2592
3552
while tcp_server.clients:
2593
3553
name, client = tcp_server.clients.popitem()
2594
3554
if use_dbus:
2595
3555
client.remove_from_connection()
2596
# Don't signal anything except ClientRemoved
3556
# Don't signal the disabling
2597
3557
client.disable(quiet=True)
3558
# Emit D-Bus signal for removal
2598
3559
if use_dbus:
2599
# Emit D-Bus signal
2600
mandos_dbus_service.ClientRemoved(client
2601
.dbus_object_path,
2602
client.name)
3560
mandos_dbus_service.client_removed_signal(client)
2603
3561
client_settings.clear()
2604
3562
2605
3563
atexit.register(cleanup)
2606
2607
for client in tcp_server.clients.itervalues():
3564
3565
for client in tcp_server.clients.values():
2608
3566
if use_dbus:
2609
# Emit D-Bus signal
2610
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3567
# Emit D-Bus signal for adding
3568
mandos_dbus_service.client_added_signal(client)
2611
3569
# Need to initiate checking of clients
2612
3570
if client.enabled:
2613
3571
client.init_checker()
2614
3572
2615
3573
tcp_server.enable()
2616
3574
tcp_server.server_activate()
2617
3575
2618
3576
# Find out what port we got
2619
service.port = tcp_server.socket.getsockname()[1]
3577
if zeroconf:
3578
service.port = tcp_server.socket.getsockname()[1]
2620
3579
if use_ipv6:
2621
3580
logger.info("Now listening on address %r, port %d,"
2622
3581
" flowinfo %d, scope_id %d",
2624
3583
else: # IPv4
2625
3584
logger.info("Now listening on address %r, port %d",
2626
3585
*tcp_server.socket.getsockname())
2627
2628
#service.interface = tcp_server.socket.getsockname()[3]
2629
3586
3587
# service.interface = tcp_server.socket.getsockname()[3]
3588
2630
3589
try:
2631
# From the Avahi example code
2632
try:
2633
service.activate()
2634
except dbus.exceptions.DBusException as error:
2635
logger.critical("D-Bus Exception", exc_info=error)
2636
cleanup()
2637
sys.exit(1)
2638
# End of Avahi example code
2639
2640
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2641
lambda *args, **kwargs:
2642
(tcp_server.handle_request
2643
(*args[2:], **kwargs) or True))
2644
3590
if zeroconf:
3591
# From the Avahi example code
3592
try:
3593
service.activate()
3594
except dbus.exceptions.DBusException as error:
3595
logger.critical("D-Bus Exception", exc_info=error)
3596
cleanup()
3597
sys.exit(1)
3598
# End of Avahi example code
3599
3600
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3601
lambda *args, **kwargs:
3602
(tcp_server.handle_request
3603
(*args[2:], **kwargs) or True))
3604
2645
3605
logger.debug("Starting main loop")
2646
3606
main_loop.run()
2647
3607
except AvahiError as error:
2656
3616
# Must run before the D-Bus bus name gets deregistered
2657
3617
cleanup()
2658
3618
3619
2659
3620
if __name__ == '__main__':
2660
3621
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0