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- Committer: Teddy Hogeborn
- Date: 2009-09-22 12:48:07 UTC
- mto: (24.1.146 mandos) (237.12.2 mandos-persistent) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 270.
- Revision ID: teddy@fukt.bsnet.se-20090922124807-i2cr0zv4vxjv38g4
* mandos-ctl: Made work again after D-Bus API changes.
(datetime_to_milliseconds): Renamed to "timedelta_to_milliseconds".
All callers changed.
(milliseconds_to_string): Use clearer mapping string format.
(string_to_delta): Add some comments.
(datetime_to_milliseconds): Renamed to "timedelta_to_milliseconds".
All callers changed.
(milliseconds_to_string): Use clearer mapping string format.
(string_to_delta): Add some comments.
- files added:
- initramfs-tools-hook-conf
- files removed:
- DBUS-API
- debian/source
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python3 -bI
2
# -*- coding: utf-8; lexical-binding: t -*-
3
#
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
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 © 2008-2022 Teddy Hogeborn
15
# Copyright © 2008-2022 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
32
# Contact the authors at <mandos@recompile.se>.
33
#
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
41
42
import sys
43
import unittest
44
import argparse
45
import logging
46
import os
47
try:
48
import SocketServer as socketserver
49
except ImportError:
50
import socketserver
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
#
33
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
51
37
import socket
38
import optparse
52
39
import datetime
53
40
import errno
54
try:
55
import ConfigParser as configparser
56
except ImportError:
57
import configparser
41
import gnutls.crypto
42
import gnutls.connection
43
import gnutls.errors
44
import gnutls.library.functions
45
import gnutls.library.constants
46
import gnutls.library.types
47
import ConfigParser as configparser
48
import sys
58
49
import re
50
import os
59
51
import signal
60
52
import subprocess
61
53
import atexit
62
54
import stat
55
import logging
63
56
import logging.handlers
64
57
import pwd
65
import contextlib
58
from contextlib import closing
66
59
import struct
67
60
import fcntl
68
61
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
73
import multiprocessing
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import random
81
import shlex
82
62
83
63
import dbus
84
64
import dbus.service
85
import gi
86
from gi.repository import GLib
65
import gobject
66
import avahi
87
67
from dbus.mainloop.glib import DBusGMainLoop
88
68
import ctypes
89
69
import ctypes.util
90
70
import xml.dom.minidom
91
71
import inspect
92
72
93
if sys.version_info.major == 2:
94
__metaclass__ = type
95
str = unicode
96
input = raw_input
97
98
# Add collections.abc.Callable if it does not exist
99
try:
100
collections.abc.Callable
101
except AttributeError:
102
class abc:
103
Callable = collections.Callable
104
collections.abc = abc
105
del abc
106
107
# Add shlex.quote if it does not exist
108
try:
109
shlex.quote
110
except AttributeError:
111
shlex.quote = re.escape
112
113
# Show warnings by default
114
if not sys.warnoptions:
115
import warnings
116
warnings.simplefilter("default")
117
118
# Try to find the value of SO_BINDTODEVICE:
119
try:
120
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
121
# newer, and it is also the most natural place for it:
73
try:
122
74
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
123
75
except AttributeError:
124
76
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
127
77
from IN import SO_BINDTODEVICE
128
78
except ImportError:
129
# In Python 2.7 it seems to have been removed entirely.
130
# Try running the C preprocessor:
131
try:
132
cc = subprocess.Popen(["cc", "--language=c", "-E",
133
"/dev/stdin"],
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE)
136
stdout = cc.communicate(
137
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
138
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
139
except (OSError, ValueError, IndexError):
140
# No value found
141
SO_BINDTODEVICE = None
142
143
if sys.version_info < (3, 2):
144
configparser.Configparser = configparser.SafeConfigParser
145
146
version = "1.8.17"
147
stored_state_file = "clients.pickle"
148
149
log = logging.getLogger(os.path.basename(sys.argv[0]))
150
logging.captureWarnings(True) # Show warnings via the logging system
151
syslogger = None
152
153
try:
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
156
except (OSError, AttributeError):
157
158
def if_nametoindex(interface):
159
"Get an interface index the hard way, i.e. using fcntl()"
160
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
161
with contextlib.closing(socket.socket()) as s:
162
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
165
return interface_index
166
167
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
172
func.func_globals,
173
func.func_name,
174
func.func_defaults,
175
func.func_closure)
176
else:
177
return types.FunctionType(func.__code__,
178
func.__globals__,
179
func.__name__,
180
func.__defaults__,
181
func.__closure__)
182
183
184
def initlogger(debug, level=logging.WARNING):
185
"""init logger and add loglevel"""
186
187
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
191
syslogger.setFormatter(logging.Formatter
192
("Mandos [%(process)d]: %(levelname)s:"
193
" %(message)s"))
194
log.addHandler(syslogger)
195
196
if debug:
197
console = logging.StreamHandler()
198
console.setFormatter(logging.Formatter("%(asctime)s %(name)s"
199
" [%(process)d]:"
200
" %(levelname)s:"
201
" %(message)s"))
202
log.addHandler(console)
203
log.setLevel(level)
204
205
206
class PGPError(Exception):
207
"""Exception if encryption/decryption fails"""
208
pass
209
210
211
class PGPEngine:
212
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
214
def __init__(self):
215
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
216
self.gpg = "gpg"
217
try:
218
output = subprocess.check_output(["gpgconf"])
219
for line in output.splitlines():
220
name, text, path = line.split(b":")
221
if name == b"gpg":
222
self.gpg = path
223
break
224
except OSError as e:
225
if e.errno != errno.ENOENT:
226
raise
227
self.gnupgargs = ["--batch",
228
"--homedir", self.tempdir,
229
"--force-mdc",
230
"--quiet"]
231
# Only GPG version 1 has the --no-use-agent option.
232
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
233
self.gnupgargs.append("--no-use-agent")
234
235
def __enter__(self):
236
return self
237
238
def __exit__(self, exc_type, exc_value, traceback):
239
self._cleanup()
240
return False
241
242
def __del__(self):
243
self._cleanup()
244
245
def _cleanup(self):
246
if self.tempdir is not None:
247
# Delete contents of tempdir
248
for root, dirs, files in os.walk(self.tempdir,
249
topdown=False):
250
for filename in files:
251
os.remove(os.path.join(root, filename))
252
for dirname in dirs:
253
os.rmdir(os.path.join(root, dirname))
254
# Remove tempdir
255
os.rmdir(self.tempdir)
256
self.tempdir = None
257
258
def password_encode(self, password):
259
# Passphrase can not be empty and can not contain newlines or
260
# NUL bytes. So we prefix it and hex encode it.
261
encoded = b"mandos" + binascii.hexlify(password)
262
if len(encoded) > 2048:
263
# GnuPG can't handle long passwords, so encode differently
264
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
265
.replace(b"\n", b"\\n")
266
.replace(b"\0", b"\\x00"))
267
return encoded
268
269
def encrypt(self, data, password):
270
passphrase = self.password_encode(password)
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
273
passfile.write(passphrase)
274
passfile.flush()
275
proc = subprocess.Popen([self.gpg, "--symmetric",
276
"--passphrase-file",
277
passfile.name]
278
+ self.gnupgargs,
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
283
if proc.returncode != 0:
284
raise PGPError(err)
285
return ciphertext
286
287
def decrypt(self, data, password):
288
passphrase = self.password_encode(password)
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
291
passfile.write(passphrase)
292
passfile.flush()
293
proc = subprocess.Popen([self.gpg, "--decrypt",
294
"--passphrase-file",
295
passfile.name]
296
+ self.gnupgargs,
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
301
if proc.returncode != 0:
302
raise PGPError(err)
303
return decrypted_plaintext
304
305
306
# Pretend that we have an Avahi module
307
class avahi:
308
"""This isn't so much a class as it is a module-like namespace."""
309
IF_UNSPEC = -1 # avahi-common/address.h
310
PROTO_UNSPEC = -1 # avahi-common/address.h
311
PROTO_INET = 0 # avahi-common/address.h
312
PROTO_INET6 = 1 # avahi-common/address.h
313
DBUS_NAME = "org.freedesktop.Avahi"
314
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
315
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
DBUS_PATH_SERVER = "/"
317
318
@staticmethod
319
def string_array_to_txt_array(t):
320
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
for s in t), signature="ay")
322
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
323
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
324
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
325
SERVER_INVALID = 0 # avahi-common/defs.h
326
SERVER_REGISTERING = 1 # avahi-common/defs.h
327
SERVER_RUNNING = 2 # avahi-common/defs.h
328
SERVER_COLLISION = 3 # avahi-common/defs.h
329
SERVER_FAILURE = 4 # avahi-common/defs.h
330
79
SO_BINDTODEVICE = None
80
81
82
version = "1.0.12"
83
84
logger = logging.Logger(u'mandos')
85
syslogger = (logging.handlers.SysLogHandler
86
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
87
address = "/dev/log"))
88
syslogger.setFormatter(logging.Formatter
89
(u'Mandos [%(process)d]: %(levelname)s:'
90
u' %(message)s'))
91
logger.addHandler(syslogger)
92
93
console = logging.StreamHandler()
94
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
95
u' %(levelname)s:'
96
u' %(message)s'))
97
logger.addHandler(console)
331
98
332
99
class AvahiError(Exception):
333
100
def __init__(self, value, *args, **kwargs):
334
101
self.value = value
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
102
super(AvahiError, self).__init__(value, *args, **kwargs)
103
def __unicode__(self):
104
return unicode(repr(self.value))
338
105
339
106
class AvahiServiceError(AvahiError):
340
107
pass
341
108
342
343
109
class AvahiGroupError(AvahiError):
344
110
pass
345
111
346
112
347
class AvahiService:
113
class AvahiService(object):
348
114
"""An Avahi (Zeroconf) service.
349
115
350
116
Attributes:
351
117
interface: integer; avahi.IF_UNSPEC or an interface index.
352
118
Used to optionally bind to the specified interface.
353
name: string; Example: "Mandos"
354
type: string; Example: "_mandos._tcp".
355
See <https://www.iana.org/assignments/service-names-port-numbers>
119
name: string; Example: u'Mandos'
120
type: string; Example: u'_mandos._tcp'.
121
See <http://www.dns-sd.org/ServiceTypes.html>
356
122
port: integer; what port to announce
357
123
TXT: list of strings; TXT record for the service
358
124
domain: string; Domain to publish on, default to .local if empty.
364
130
server: D-Bus Server
365
131
bus: dbus.SystemBus()
366
132
"""
367
368
def __init__(self,
369
interface=avahi.IF_UNSPEC,
370
name=None,
371
servicetype=None,
372
port=None,
373
TXT=None,
374
domain="",
375
host="",
376
max_renames=32768,
377
protocol=avahi.PROTO_UNSPEC,
378
bus=None):
133
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
134
servicetype = None, port = None, TXT = None,
135
domain = u"", host = u"", max_renames = 32768,
136
protocol = avahi.PROTO_UNSPEC, bus = None):
379
137
self.interface = interface
380
138
self.name = name
381
139
self.type = servicetype
389
147
self.group = None # our entry group
390
148
self.server = None
391
149
self.bus = bus
392
self.entry_group_state_changed_match = None
393
394
def rename(self, remove=True):
150
def rename(self):
395
151
"""Derived from the Avahi example code"""
396
152
if self.rename_count >= self.max_renames:
397
log.critical("No suitable Zeroconf service name found"
398
" after %i retries, exiting.",
399
self.rename_count)
400
raise AvahiServiceError("Too many renames")
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
153
logger.critical(u"No suitable Zeroconf service name found"
154
u" after %i retries, exiting.",
155
self.rename_count)
156
raise AvahiServiceError(u"Too many renames")
157
self.name = self.server.GetAlternativeServiceName(self.name)
158
logger.info(u"Changing Zeroconf service name to %r ...",
159
unicode(self.name))
160
syslogger.setFormatter(logging.Formatter
161
(u'Mandos (%s) [%%(process)d]:'
162
u' %%(levelname)s: %%(message)s'
163
% self.name))
164
self.remove()
165
self.add()
403
166
self.rename_count += 1
404
log.info("Changing Zeroconf service name to %r ...",
405
self.name)
406
if remove:
407
self.remove()
408
try:
409
self.add()
410
except dbus.exceptions.DBusException as error:
411
if (error.get_dbus_name()
412
== "org.freedesktop.Avahi.CollisionError"):
413
log.info("Local Zeroconf service name collision.")
414
return self.rename(remove=False)
415
else:
416
log.critical("D-Bus Exception", exc_info=error)
417
self.cleanup()
418
os._exit(1)
419
420
167
def remove(self):
421
168
"""Derived from the Avahi example code"""
422
if self.entry_group_state_changed_match is not None:
423
self.entry_group_state_changed_match.remove()
424
self.entry_group_state_changed_match = None
425
169
if self.group is not None:
426
170
self.group.Reset()
427
428
171
def add(self):
429
172
"""Derived from the Avahi example code"""
430
self.remove()
431
173
if self.group is None:
432
174
self.group = dbus.Interface(
433
175
self.bus.get_object(avahi.DBUS_NAME,
434
176
self.server.EntryGroupNew()),
435
177
avahi.DBUS_INTERFACE_ENTRY_GROUP)
436
self.entry_group_state_changed_match = (
437
self.group.connect_to_signal(
438
"StateChanged", self.entry_group_state_changed))
439
log.debug("Adding Zeroconf service '%s' of type '%s' ...",
440
self.name, self.type)
178
self.group.connect_to_signal('StateChanged',
179
self
180
.entry_group_state_changed)
181
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
182
self.name, self.type)
441
183
self.group.AddService(
442
184
self.interface,
443
185
self.protocol,
447
189
dbus.UInt16(self.port),
448
190
avahi.string_array_to_txt_array(self.TXT))
449
191
self.group.Commit()
450
451
192
def entry_group_state_changed(self, state, error):
452
193
"""Derived from the Avahi example code"""
453
log.debug("Avahi entry group state change: %i", state)
454
194
logger.debug(u"Avahi state change: %i", state)
195
455
196
if state == avahi.ENTRY_GROUP_ESTABLISHED:
456
log.debug("Zeroconf service established.")
197
logger.debug(u"Zeroconf service established.")
457
198
elif state == avahi.ENTRY_GROUP_COLLISION:
458
log.info("Zeroconf service name collision.")
199
logger.warning(u"Zeroconf service name collision.")
459
200
self.rename()
460
201
elif state == avahi.ENTRY_GROUP_FAILURE:
461
log.critical("Avahi: Error in group state changed %s",
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
202
logger.critical(u"Avahi: Error in group state changed %s",
203
unicode(error))
204
raise AvahiGroupError(u"State changed: %s"
205
% unicode(error))
465
206
def cleanup(self):
466
207
"""Derived from the Avahi example code"""
467
208
if self.group is not None:
468
try:
469
self.group.Free()
470
except (dbus.exceptions.UnknownMethodException,
471
dbus.exceptions.DBusException):
472
pass
209
self.group.Free()
473
210
self.group = None
474
self.remove()
475
476
def server_state_changed(self, state, error=None):
211
def server_state_changed(self, state):
477
212
"""Derived from the Avahi example code"""
478
log.debug("Avahi server state change: %i", state)
479
bad_states = {
480
avahi.SERVER_INVALID: "Zeroconf server invalid",
481
avahi.SERVER_REGISTERING: None,
482
avahi.SERVER_COLLISION: "Zeroconf server name collision",
483
avahi.SERVER_FAILURE: "Zeroconf server failure",
484
}
485
if state in bad_states:
486
if bad_states[state] is not None:
487
if error is None:
488
log.error(bad_states[state])
489
else:
490
log.error(bad_states[state] + ": %r", error)
491
self.cleanup()
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
215
self.remove()
492
216
elif state == avahi.SERVER_RUNNING:
493
try:
494
self.add()
495
except dbus.exceptions.DBusException as error:
496
if (error.get_dbus_name()
497
== "org.freedesktop.Avahi.CollisionError"):
498
log.info("Local Zeroconf service name collision.")
499
return self.rename(remove=False)
500
else:
501
log.critical("D-Bus Exception", exc_info=error)
502
self.cleanup()
503
os._exit(1)
504
else:
505
if error is None:
506
log.debug("Unknown state: %r", state)
507
else:
508
log.debug("Unknown state: %r: %r", state, error)
509
217
self.add()
510
218
def activate(self):
511
219
"""Derived from the Avahi example code"""
512
220
if self.server is None:
513
221
self.server = dbus.Interface(
514
222
self.bus.get_object(avahi.DBUS_NAME,
515
avahi.DBUS_PATH_SERVER,
516
follow_name_owner_changes=True),
223
avahi.DBUS_PATH_SERVER),
517
224
avahi.DBUS_INTERFACE_SERVER)
518
self.server.connect_to_signal("StateChanged",
519
self.server_state_changed)
225
self.server.connect_to_signal(u"StateChanged",
226
self.server_state_changed)
520
227
self.server_state_changed(self.server.GetState())
521
228
522
229
523
class AvahiServiceToSyslog(AvahiService):
524
def rename(self, *args, **kwargs):
525
"""Add the new name to the syslog messages"""
526
ret = super(AvahiServiceToSyslog, self).rename(*args,
527
**kwargs)
528
syslogger.setFormatter(logging.Formatter(
529
"Mandos ({}) [%(process)d]: %(levelname)s: %(message)s"
530
.format(self.name)))
531
return ret
532
533
534
# Pretend that we have a GnuTLS module
535
class gnutls:
536
"""This isn't so much a class as it is a module-like namespace."""
537
538
library = ctypes.util.find_library("gnutls")
539
if library is None:
540
library = ctypes.util.find_library("gnutls-deb0")
541
_library = ctypes.cdll.LoadLibrary(library)
542
del library
543
544
# Unless otherwise indicated, the constants and types below are
545
# all from the gnutls/gnutls.h C header file.
546
547
# Constants
548
E_SUCCESS = 0
549
E_INTERRUPTED = -52
550
E_AGAIN = -28
551
CRT_OPENPGP = 2
552
CRT_RAWPK = 3
553
CLIENT = 2
554
SHUT_RDWR = 0
555
CRD_CERTIFICATE = 1
556
E_NO_CERTIFICATE_FOUND = -49
557
X509_FMT_DER = 0
558
NO_TICKETS = 1<<10
559
ENABLE_RAWPK = 1<<18
560
CTYPE_PEERS = 3
561
KEYID_USE_SHA256 = 1 # gnutls/x509.h
562
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
563
564
# Types
565
class _session_int(ctypes.Structure):
566
_fields_ = []
567
session_t = ctypes.POINTER(_session_int)
568
569
class certificate_credentials_st(ctypes.Structure):
570
_fields_ = []
571
certificate_credentials_t = ctypes.POINTER(
572
certificate_credentials_st)
573
certificate_type_t = ctypes.c_int
574
575
class datum_t(ctypes.Structure):
576
_fields_ = [("data", ctypes.POINTER(ctypes.c_ubyte)),
577
("size", ctypes.c_uint)]
578
579
class _openpgp_crt_int(ctypes.Structure):
580
_fields_ = []
581
openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)
582
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
583
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
584
credentials_type_t = ctypes.c_int
585
transport_ptr_t = ctypes.c_void_p
586
close_request_t = ctypes.c_int
587
588
# Exceptions
589
class Error(Exception):
590
def __init__(self, message=None, code=None, args=()):
591
# Default usage is by a message string, but if a return
592
# code is passed, convert it to a string with
593
# gnutls.strerror()
594
self.code = code
595
if message is None and code is not None:
596
message = gnutls.strerror(code).decode(
597
"utf-8", errors="replace")
598
return super(gnutls.Error, self).__init__(
599
message, *args)
600
601
class CertificateSecurityError(Error):
602
pass
603
604
class PointerTo:
605
def __init__(self, cls):
606
self.cls = cls
607
608
def from_param(self, obj):
609
if not isinstance(obj, self.cls):
610
raise TypeError("Not of type {}: {!r}"
611
.format(self.cls.__name__, obj))
612
return ctypes.byref(obj.from_param(obj))
613
614
class CastToVoidPointer:
615
def __init__(self, cls):
616
self.cls = cls
617
618
def from_param(self, obj):
619
if not isinstance(obj, self.cls):
620
raise TypeError("Not of type {}: {!r}"
621
.format(self.cls.__name__, obj))
622
return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)
623
624
class With_from_param:
625
@classmethod
626
def from_param(cls, obj):
627
return obj._as_parameter_
628
629
# Classes
630
class Credentials(With_from_param):
631
def __init__(self):
632
self._as_parameter_ = gnutls.certificate_credentials_t()
633
gnutls.certificate_allocate_credentials(self)
634
self.type = gnutls.CRD_CERTIFICATE
635
636
def __del__(self):
637
gnutls.certificate_free_credentials(self)
638
639
class ClientSession(With_from_param):
640
def __init__(self, socket, credentials=None):
641
self._as_parameter_ = gnutls.session_t()
642
gnutls_flags = gnutls.CLIENT
643
if gnutls.check_version(b"3.5.6"):
644
gnutls_flags |= gnutls.NO_TICKETS
645
if gnutls.has_rawpk:
646
gnutls_flags |= gnutls.ENABLE_RAWPK
647
gnutls.init(self, gnutls_flags)
648
del gnutls_flags
649
gnutls.set_default_priority(self)
650
gnutls.transport_set_ptr(self, socket.fileno())
651
gnutls.handshake_set_private_extensions(self, True)
652
self.socket = socket
653
if credentials is None:
654
credentials = gnutls.Credentials()
655
gnutls.credentials_set(self, credentials.type,
656
credentials)
657
self.credentials = credentials
658
659
def __del__(self):
660
gnutls.deinit(self)
661
662
def handshake(self):
663
return gnutls.handshake(self)
664
665
def send(self, data):
666
data = bytes(data)
667
data_len = len(data)
668
while data_len > 0:
669
data_len -= gnutls.record_send(self, data[-data_len:],
670
data_len)
671
672
def bye(self):
673
return gnutls.bye(self, gnutls.SHUT_RDWR)
674
675
# Error handling functions
676
def _error_code(result):
677
"""A function to raise exceptions on errors, suitable
678
for the "restype" attribute on ctypes functions"""
679
if result >= gnutls.E_SUCCESS:
680
return result
681
if result == gnutls.E_NO_CERTIFICATE_FOUND:
682
raise gnutls.CertificateSecurityError(code=result)
683
raise gnutls.Error(code=result)
684
685
def _retry_on_error(result, func, arguments,
686
_error_code=_error_code):
687
"""A function to retry on some errors, suitable
688
for the "errcheck" attribute on ctypes functions"""
689
while result < gnutls.E_SUCCESS:
690
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
691
return _error_code(result)
692
result = func(*arguments)
693
return result
694
695
# Unless otherwise indicated, the function declarations below are
696
# all from the gnutls/gnutls.h C header file.
697
698
# Functions
699
priority_set_direct = _library.gnutls_priority_set_direct
700
priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,
701
ctypes.POINTER(ctypes.c_char_p)]
702
priority_set_direct.restype = _error_code
703
704
init = _library.gnutls_init
705
init.argtypes = [PointerTo(ClientSession), ctypes.c_int]
706
init.restype = _error_code
707
708
set_default_priority = _library.gnutls_set_default_priority
709
set_default_priority.argtypes = [ClientSession]
710
set_default_priority.restype = _error_code
711
712
record_send = _library.gnutls_record_send
713
record_send.argtypes = [ClientSession, ctypes.c_void_p,
714
ctypes.c_size_t]
715
record_send.restype = ctypes.c_ssize_t
716
record_send.errcheck = _retry_on_error
717
718
certificate_allocate_credentials = (
719
_library.gnutls_certificate_allocate_credentials)
720
certificate_allocate_credentials.argtypes = [
721
PointerTo(Credentials)]
722
certificate_allocate_credentials.restype = _error_code
723
724
certificate_free_credentials = (
725
_library.gnutls_certificate_free_credentials)
726
certificate_free_credentials.argtypes = [Credentials]
727
certificate_free_credentials.restype = None
728
729
handshake_set_private_extensions = (
730
_library.gnutls_handshake_set_private_extensions)
731
handshake_set_private_extensions.argtypes = [ClientSession,
732
ctypes.c_int]
733
handshake_set_private_extensions.restype = None
734
735
credentials_set = _library.gnutls_credentials_set
736
credentials_set.argtypes = [ClientSession, credentials_type_t,
737
CastToVoidPointer(Credentials)]
738
credentials_set.restype = _error_code
739
740
strerror = _library.gnutls_strerror
741
strerror.argtypes = [ctypes.c_int]
742
strerror.restype = ctypes.c_char_p
743
744
certificate_type_get = _library.gnutls_certificate_type_get
745
certificate_type_get.argtypes = [ClientSession]
746
certificate_type_get.restype = _error_code
747
748
certificate_get_peers = _library.gnutls_certificate_get_peers
749
certificate_get_peers.argtypes = [ClientSession,
750
ctypes.POINTER(ctypes.c_uint)]
751
certificate_get_peers.restype = ctypes.POINTER(datum_t)
752
753
global_set_log_level = _library.gnutls_global_set_log_level
754
global_set_log_level.argtypes = [ctypes.c_int]
755
global_set_log_level.restype = None
756
757
global_set_log_function = _library.gnutls_global_set_log_function
758
global_set_log_function.argtypes = [log_func]
759
global_set_log_function.restype = None
760
761
deinit = _library.gnutls_deinit
762
deinit.argtypes = [ClientSession]
763
deinit.restype = None
764
765
handshake = _library.gnutls_handshake
766
handshake.argtypes = [ClientSession]
767
handshake.restype = ctypes.c_int
768
handshake.errcheck = _retry_on_error
769
770
transport_set_ptr = _library.gnutls_transport_set_ptr
771
transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]
772
transport_set_ptr.restype = None
773
774
bye = _library.gnutls_bye
775
bye.argtypes = [ClientSession, close_request_t]
776
bye.restype = ctypes.c_int
777
bye.errcheck = _retry_on_error
778
779
check_version = _library.gnutls_check_version
780
check_version.argtypes = [ctypes.c_char_p]
781
check_version.restype = ctypes.c_char_p
782
783
_need_version = b"3.3.0"
784
if check_version(_need_version) is None:
785
raise self.Error("Needs GnuTLS {} or later"
786
.format(_need_version))
787
788
_tls_rawpk_version = b"3.6.6"
789
has_rawpk = bool(check_version(_tls_rawpk_version))
790
791
if has_rawpk:
792
# Types
793
class pubkey_st(ctypes.Structure):
794
_fields = []
795
pubkey_t = ctypes.POINTER(pubkey_st)
796
797
x509_crt_fmt_t = ctypes.c_int
798
799
# All the function declarations below are from
800
# gnutls/abstract.h
801
pubkey_init = _library.gnutls_pubkey_init
802
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
803
pubkey_init.restype = _error_code
804
805
pubkey_import = _library.gnutls_pubkey_import
806
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
807
x509_crt_fmt_t]
808
pubkey_import.restype = _error_code
809
810
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
811
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
812
ctypes.POINTER(ctypes.c_ubyte),
813
ctypes.POINTER(ctypes.c_size_t)]
814
pubkey_get_key_id.restype = _error_code
815
816
pubkey_deinit = _library.gnutls_pubkey_deinit
817
pubkey_deinit.argtypes = [pubkey_t]
818
pubkey_deinit.restype = None
819
else:
820
# All the function declarations below are from
821
# gnutls/openpgp.h
822
823
openpgp_crt_init = _library.gnutls_openpgp_crt_init
824
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
825
openpgp_crt_init.restype = _error_code
826
827
openpgp_crt_import = _library.gnutls_openpgp_crt_import
828
openpgp_crt_import.argtypes = [openpgp_crt_t,
829
ctypes.POINTER(datum_t),
830
openpgp_crt_fmt_t]
831
openpgp_crt_import.restype = _error_code
832
833
openpgp_crt_verify_self = \
834
_library.gnutls_openpgp_crt_verify_self
835
openpgp_crt_verify_self.argtypes = [
836
openpgp_crt_t,
837
ctypes.c_uint,
838
ctypes.POINTER(ctypes.c_uint),
839
]
840
openpgp_crt_verify_self.restype = _error_code
841
842
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
843
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
844
openpgp_crt_deinit.restype = None
845
846
openpgp_crt_get_fingerprint = (
847
_library.gnutls_openpgp_crt_get_fingerprint)
848
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
849
ctypes.c_void_p,
850
ctypes.POINTER(
851
ctypes.c_size_t)]
852
openpgp_crt_get_fingerprint.restype = _error_code
853
854
if check_version(b"3.6.4"):
855
certificate_type_get2 = _library.gnutls_certificate_type_get2
856
certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]
857
certificate_type_get2.restype = _error_code
858
859
# Remove non-public functions
860
del _error_code, _retry_on_error
861
862
863
def call_pipe(connection, # : multiprocessing.Connection
864
func, *args, **kwargs):
865
"""This function is meant to be called by multiprocessing.Process
866
867
This function runs func(*args, **kwargs), and writes the resulting
868
return value on the provided multiprocessing.Connection.
869
"""
870
connection.send(func(*args, **kwargs))
871
connection.close()
872
873
874
class Client:
230
class Client(object):
875
231
"""A representation of a client host served by this server.
876
232
877
233
Attributes:
878
approved: bool(); None if not yet approved/disapproved
879
approval_delay: datetime.timedelta(); Time to wait for approval
880
approval_duration: datetime.timedelta(); Duration of one approval
881
checker: multiprocessing.Process(); a running checker process used
882
to see if the client lives. None if no process is
883
running.
884
checker_callback_tag: a GLib event source tag, or None
885
checker_command: string; External command which is run to check
886
if client lives. %() expansions are done at
887
runtime with vars(self) as dict, so that for
888
instance %(name)s can be used in the command.
889
checker_initiator_tag: a GLib event source tag, or None
234
name: string; from the config file, used in log messages and
235
D-Bus identifiers
236
fingerprint: string (40 or 32 hexadecimal digits); used to
237
uniquely identify the client
238
secret: bytestring; sent verbatim (over TLS) to client
239
host: string; available for use by the checker command
890
240
created: datetime.datetime(); (UTC) object creation
891
client_structure: Object describing what attributes a client has
892
and is used for storing the client at exit
893
current_checker_command: string; current running checker_command
894
disable_initiator_tag: a GLib event source tag, or None
241
last_enabled: datetime.datetime(); (UTC)
895
242
enabled: bool()
896
fingerprint: string (40 or 32 hexadecimal digits); used to
897
uniquely identify an OpenPGP client
898
key_id: string (64 hexadecimal digits); used to uniquely identify
899
a client using raw public keys
900
host: string; available for use by the checker command
901
interval: datetime.timedelta(); How often to start a new checker
902
last_approval_request: datetime.datetime(); (UTC) or None
903
243
last_checked_ok: datetime.datetime(); (UTC) or None
904
last_checker_status: integer between 0 and 255 reflecting exit
905
status of last checker. -1 reflects crashed
906
checker, -2 means no checker completed yet.
907
last_checker_signal: The signal which killed the last checker, if
908
last_checker_status is -1
909
last_enabled: datetime.datetime(); (UTC) or None
910
name: string; from the config file, used in log messages and
911
D-Bus identifiers
912
secret: bytestring; sent verbatim (over TLS) to client
913
244
timeout: datetime.timedelta(); How long from last_checked_ok
914
until this client is disabled
915
extended_timeout: extra long timeout when secret has been sent
916
runtime_expansions: Allowed attributes for runtime expansion.
917
expires: datetime.datetime(); time (UTC) when a client will be
918
disabled, or None
919
server_settings: The server_settings dict from main()
245
until this client is invalid
246
interval: datetime.timedelta(); How often to start a new checker
247
disable_hook: If set, called by disable() as disable_hook(self)
248
checker: subprocess.Popen(); a running checker process used
249
to see if the client lives.
250
'None' if no process is running.
251
checker_initiator_tag: a gobject event source tag, or None
252
disable_initiator_tag: - '' -
253
checker_callback_tag: - '' -
254
checker_command: string; External command which is run to check if
255
client lives. %() expansions are done at
256
runtime with vars(self) as dict, so that for
257
instance %(name)s can be used in the command.
258
current_checker_command: string; current running checker_command
920
259
"""
921
922
runtime_expansions = ("approval_delay", "approval_duration",
923
"created", "enabled", "expires", "key_id",
924
"fingerprint", "host", "interval",
925
"last_approval_request", "last_checked_ok",
926
"last_enabled", "name", "timeout")
927
client_defaults = {
928
"timeout": "PT5M",
929
"extended_timeout": "PT15M",
930
"interval": "PT2M",
931
"checker": "fping -q -- %%(host)s",
932
"host": "",
933
"approval_delay": "PT0S",
934
"approval_duration": "PT1S",
935
"approved_by_default": "True",
936
"enabled": "True",
937
}
938
260
939
261
@staticmethod
940
def config_parser(config):
941
"""Construct a new dict of client settings of this form:
942
{ client_name: {setting_name: value, ...}, ...}
943
with exceptions for any special settings as defined above.
944
NOTE: Must be a pure function. Must return the same result
945
value given the same arguments.
946
"""
947
settings = {}
948
for client_name in config.sections():
949
section = dict(config.items(client_name))
950
client = settings[client_name] = {}
951
952
client["host"] = section["host"]
953
# Reformat values from string types to Python types
954
client["approved_by_default"] = config.getboolean(
955
client_name, "approved_by_default")
956
client["enabled"] = config.getboolean(client_name,
957
"enabled")
958
959
# Uppercase and remove spaces from key_id and fingerprint
960
# for later comparison purposes with return value from the
961
# key_id() and fingerprint() functions
962
client["key_id"] = (section.get("key_id", "").upper()
963
.replace(" ", ""))
964
client["fingerprint"] = (section.get("fingerprint",
965
"").upper()
966
.replace(" ", ""))
967
if not (client["key_id"] or client["fingerprint"]):
968
log.error("Skipping client %s without key_id or"
969
" fingerprint", client_name)
970
del settings[client_name]
971
continue
972
if "secret" in section:
973
client["secret"] = codecs.decode(section["secret"]
974
.encode("utf-8"),
975
"base64")
976
elif "secfile" in section:
977
with open(os.path.expanduser(os.path.expandvars
978
(section["secfile"])),
979
"rb") as secfile:
980
client["secret"] = secfile.read()
981
else:
982
raise TypeError("No secret or secfile for section {}"
983
.format(section))
984
client["timeout"] = string_to_delta(section["timeout"])
985
client["extended_timeout"] = string_to_delta(
986
section["extended_timeout"])
987
client["interval"] = string_to_delta(section["interval"])
988
client["approval_delay"] = string_to_delta(
989
section["approval_delay"])
990
client["approval_duration"] = string_to_delta(
991
section["approval_duration"])
992
client["checker_command"] = section["checker"]
993
client["last_approval_request"] = None
994
client["last_checked_ok"] = None
995
client["last_checker_status"] = -2
996
997
return settings
998
999
def __init__(self, settings, name=None, server_settings=None):
262
def _timedelta_to_milliseconds(td):
263
"Convert a datetime.timedelta() to milliseconds"
264
return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
266
+ (td.microseconds // 1000))
267
268
def timeout_milliseconds(self):
269
"Return the 'timeout' attribute in milliseconds"
270
return self._timedelta_to_milliseconds(self.timeout)
271
272
def interval_milliseconds(self):
273
"Return the 'interval' attribute in milliseconds"
274
return self._timedelta_to_milliseconds(self.interval)
275
276
def __init__(self, name = None, disable_hook=None, config=None):
277
"""Note: the 'checker' key in 'config' sets the
278
'checker_command' attribute and *not* the 'checker'
279
attribute."""
1000
280
self.name = name
1001
if server_settings is None:
1002
server_settings = {}
1003
self.server_settings = server_settings
1004
# adding all client settings
1005
for setting, value in settings.items():
1006
setattr(self, setting, value)
1007
1008
if self.enabled:
1009
if not hasattr(self, "last_enabled"):
1010
self.last_enabled = datetime.datetime.utcnow()
1011
if not hasattr(self, "expires"):
1012
self.expires = (datetime.datetime.utcnow()
1013
+ self.timeout)
281
if config is None:
282
config = {}
283
logger.debug(u"Creating client %r", self.name)
284
# Uppercase and remove spaces from fingerprint for later
285
# comparison purposes with return value from the fingerprint()
286
# function
287
self.fingerprint = (config[u"fingerprint"].upper()
288
.replace(u" ", u""))
289
logger.debug(u" Fingerprint: %s", self.fingerprint)
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
293
with closing(open(os.path.expanduser
294
(os.path.expandvars
295
(config[u"secfile"])))) as secfile:
296
self.secret = secfile.read()
1014
297
else:
1015
self.last_enabled = None
1016
self.expires = None
1017
1018
log.debug("Creating client %r", self.name)
1019
log.debug(" Key ID: %s", self.key_id)
1020
log.debug(" Fingerprint: %s", self.fingerprint)
1021
self.created = settings.get("created",
1022
datetime.datetime.utcnow())
1023
1024
# attributes specific for this server instance
298
raise TypeError(u"No secret or secfile for client %s"
299
% self.name)
300
self.host = config.get(u"host", u"")
301
self.created = datetime.datetime.utcnow()
302
self.enabled = False
303
self.last_enabled = None
304
self.last_checked_ok = None
305
self.timeout = string_to_delta(config[u"timeout"])
306
self.interval = string_to_delta(config[u"interval"])
307
self.disable_hook = disable_hook
1025
308
self.checker = None
1026
309
self.checker_initiator_tag = None
1027
310
self.disable_initiator_tag = None
1028
311
self.checker_callback_tag = None
312
self.checker_command = config[u"checker"]
1029
313
self.current_checker_command = None
1030
self.approved = None
1031
self.approvals_pending = 0
1032
self.changedstate = multiprocessing_manager.Condition(
1033
multiprocessing_manager.Lock())
1034
self.client_structure = [attr
1035
for attr in self.__dict__.keys()
1036
if not attr.startswith("_")]
1037
self.client_structure.append("client_structure")
1038
1039
for name, t in inspect.getmembers(
1040
type(self), lambda obj: isinstance(obj, property)):
1041
if not name.startswith("_"):
1042
self.client_structure.append(name)
1043
1044
# Send notice to process children that client state has changed
1045
def send_changedstate(self):
1046
with self.changedstate:
1047
self.changedstate.notify_all()
1048
314
self.last_connect = None
315
1049
316
def enable(self):
1050
317
"""Start this client's checker and timeout hooks"""
1051
if getattr(self, "enabled", False):
318
if getattr(self, u"enabled", False):
1052
319
# Already enabled
1053
320
return
1054
self.enabled = True
1055
321
self.last_enabled = datetime.datetime.utcnow()
1056
self.init_checker()
1057
self.send_changedstate()
1058
1059
def disable(self, quiet=True):
322
# Schedule a new checker to be started an 'interval' from now,
323
# and every interval from then on.
324
self.checker_initiator_tag = (gobject.timeout_add
325
(self.interval_milliseconds(),
326
self.start_checker))
327
# Also start a new checker *right now*.
328
self.start_checker()
329
# Schedule a disable() when 'timeout' has passed
330
self.disable_initiator_tag = (gobject.timeout_add
331
(self.timeout_milliseconds(),
332
self.disable))
333
self.enabled = True
334
335
def disable(self):
1060
336
"""Disable this client."""
1061
337
if not getattr(self, "enabled", False):
1062
338
return False
1063
if not quiet:
1064
log.info("Disabling client %s", self.name)
1065
if getattr(self, "disable_initiator_tag", None) is not None:
1066
GLib.source_remove(self.disable_initiator_tag)
339
logger.info(u"Disabling client %s", self.name)
340
if getattr(self, u"disable_initiator_tag", False):
341
gobject.source_remove(self.disable_initiator_tag)
1067
342
self.disable_initiator_tag = None
1068
self.expires = None
1069
if getattr(self, "checker_initiator_tag", None) is not None:
1070
GLib.source_remove(self.checker_initiator_tag)
343
if getattr(self, u"checker_initiator_tag", False):
344
gobject.source_remove(self.checker_initiator_tag)
1071
345
self.checker_initiator_tag = None
1072
346
self.stop_checker()
347
if self.disable_hook:
348
self.disable_hook(self)
1073
349
self.enabled = False
1074
if not quiet:
1075
self.send_changedstate()
1076
# Do not run this again if called by a GLib.timeout_add
350
# Do not run this again if called by a gobject.timeout_add
1077
351
return False
1078
352
1079
353
def __del__(self):
354
self.disable_hook = None
1080
355
self.disable()
1081
1082
def init_checker(self, randomize_start=False):
1083
# Schedule a new checker to be started a randomly selected
1084
# time (a fraction of 'interval') from now. This spreads out
1085
# the startup of checkers over time when the server is
1086
# started.
1087
if self.checker_initiator_tag is not None:
1088
GLib.source_remove(self.checker_initiator_tag)
1089
interval_milliseconds = int(self.interval.total_seconds()
1090
* 1000)
1091
if randomize_start:
1092
delay_milliseconds = random.randrange(
1093
interval_milliseconds + 1)
1094
else:
1095
delay_milliseconds = interval_milliseconds
1096
self.checker_initiator_tag = GLib.timeout_add(
1097
delay_milliseconds, self.start_checker, randomize_start)
1098
delay = datetime.timedelta(0, 0, 0, delay_milliseconds)
1099
# A checker might take up to an 'interval' of time, so we can
1100
# expire at the soonest one interval after a checker was
1101
# started. Since the initial checker is delayed, the expire
1102
# time might have to be extended.
1103
now = datetime.datetime.utcnow()
1104
self.expires = now + delay + self.interval
1105
# Schedule a disable() at expire time
1106
if self.disable_initiator_tag is not None:
1107
GLib.source_remove(self.disable_initiator_tag)
1108
self.disable_initiator_tag = GLib.timeout_add(
1109
int((self.expires - now).total_seconds() * 1000),
1110
self.disable)
1111
1112
def checker_callback(self, source, condition, connection,
1113
command):
356
357
def checker_callback(self, pid, condition, command):
1114
358
"""The checker has completed, so take appropriate actions."""
1115
# Read return code from connection (see call_pipe)
1116
returncode = connection.recv()
1117
connection.close()
1118
if self.checker is not None:
1119
self.checker.join()
1120
359
self.checker_callback_tag = None
1121
360
self.checker = None
1122
1123
if returncode >= 0:
1124
self.last_checker_status = returncode
1125
self.last_checker_signal = None
1126
if self.last_checker_status == 0:
1127
log.info("Checker for %(name)s succeeded", vars(self))
361
if os.WIFEXITED(condition):
362
exitstatus = os.WEXITSTATUS(condition)
363
if exitstatus == 0:
364
logger.info(u"Checker for %(name)s succeeded",
365
vars(self))
1128
366
self.checked_ok()
1129
367
else:
1130
log.info("Checker for %(name)s failed", vars(self))
368
logger.info(u"Checker for %(name)s failed",
369
vars(self))
1131
370
else:
1132
self.last_checker_status = -1
1133
self.last_checker_signal = -returncode
1134
log.warning("Checker for %(name)s crashed?", vars(self))
1135
return False
1136
371
logger.warning(u"Checker for %(name)s crashed?",
372
vars(self))
373
1137
374
def checked_ok(self):
1138
"""Assert that the client has been seen, alive and well."""
375
"""Bump up the timeout for this client.
376
377
This should only be called when the client has been seen,
378
alive and well.
379
"""
1139
380
self.last_checked_ok = datetime.datetime.utcnow()
1140
self.last_checker_status = 0
1141
self.last_checker_signal = None
1142
self.bump_timeout()
1143
1144
def bump_timeout(self, timeout=None):
1145
"""Bump up the timeout for this client."""
1146
if timeout is None:
1147
timeout = self.timeout
1148
if self.disable_initiator_tag is not None:
1149
GLib.source_remove(self.disable_initiator_tag)
1150
self.disable_initiator_tag = None
1151
if getattr(self, "enabled", False):
1152
self.disable_initiator_tag = GLib.timeout_add(
1153
int(timeout.total_seconds() * 1000), self.disable)
1154
self.expires = datetime.datetime.utcnow() + timeout
1155
1156
def need_approval(self):
1157
self.last_approval_request = datetime.datetime.utcnow()
1158
1159
def start_checker(self, start_was_randomized=False):
381
gobject.source_remove(self.disable_initiator_tag)
382
self.disable_initiator_tag = (gobject.timeout_add
383
(self.timeout_milliseconds(),
384
self.disable))
385
386
def start_checker(self):
1160
387
"""Start a new checker subprocess if one is not running.
1161
388
1162
389
If a checker already exists, leave it running and do
1163
390
nothing."""
1164
391
# The reason for not killing a running checker is that if we
1165
# did that, and if a checker (for some reason) started running
1166
# slowly and taking more than 'interval' time, then the client
1167
# would inevitably timeout, since no checker would get a
1168
# chance to run to completion. If we instead leave running
392
# did that, then if a checker (for some reason) started
393
# running slowly and taking more than 'interval' time, the
394
# client would inevitably timeout, since no checker would get
395
# a chance to run to completion. If we instead leave running
1169
396
# checkers alone, the checker would have to take more time
1170
# than 'timeout' for the client to be disabled, which is as it
1171
# should be.
1172
1173
if self.checker is not None and not self.checker.is_alive():
1174
log.warning("Checker was not alive; joining")
1175
self.checker.join()
1176
self.checker = None
397
# than 'timeout' for the client to be declared invalid, which
398
# is as it should be.
399
400
# If a checker exists, make sure it is not a zombie
401
if self.checker is not None:
402
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
403
if pid:
404
logger.warning(u"Checker was a zombie")
405
gobject.source_remove(self.checker_callback_tag)
406
self.checker_callback(pid, status,
407
self.current_checker_command)
1177
408
# Start a new checker if needed
1178
409
if self.checker is None:
1179
# Escape attributes for the shell
1180
escaped_attrs = {
1181
attr: shlex.quote(str(getattr(self, attr)))
1182
for attr in self.runtime_expansions}
1183
410
try:
1184
command = self.checker_command % escaped_attrs
1185
except TypeError as error:
1186
log.error('Could not format string "%s"',
1187
self.checker_command, exc_info=error)
1188
return True # Try again later
411
# In case checker_command has exactly one % operator
412
command = self.checker_command % self.host
413
except TypeError:
414
# Escape attributes for the shell
415
escaped_attrs = dict((key,
416
re.escape(unicode(str(val),
417
errors=
418
u'replace')))
419
for key, val in
420
vars(self).iteritems())
421
try:
422
command = self.checker_command % escaped_attrs
423
except TypeError, error:
424
logger.error(u'Could not format string "%s":'
425
u' %s', self.checker_command, error)
426
return True # Try again later
1189
427
self.current_checker_command = command
1190
log.info("Starting checker %r for %s", command, self.name)
1191
# We don't need to redirect stdout and stderr, since
1192
# in normal mode, that is already done by daemon(),
1193
# and in debug mode we don't want to. (Stdin is
1194
# always replaced by /dev/null.)
1195
# The exception is when not debugging but nevertheless
1196
# running in the foreground; use the previously
1197
# created wnull.
1198
popen_args = {"close_fds": True,
1199
"shell": True,
1200
"cwd": "/"}
1201
if (not self.server_settings["debug"]
1202
and self.server_settings["foreground"]):
1203
popen_args.update({"stdout": wnull,
1204
"stderr": wnull})
1205
pipe = multiprocessing.Pipe(duplex=False)
1206
self.checker = multiprocessing.Process(
1207
target=call_pipe,
1208
args=(pipe[1], subprocess.call, command),
1209
kwargs=popen_args)
1210
self.checker.start()
1211
self.checker_callback_tag = GLib.io_add_watch(
1212
GLib.IOChannel.unix_new(pipe[0].fileno()),
1213
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1214
self.checker_callback, pipe[0], command)
1215
if start_was_randomized:
1216
# We were started after a random delay; Schedule a new
1217
# checker to be started an 'interval' from now, and every
1218
# interval from then on.
1219
now = datetime.datetime.utcnow()
1220
self.checker_initiator_tag = GLib.timeout_add(
1221
int(self.interval.total_seconds() * 1000),
1222
self.start_checker)
1223
self.expires = max(self.expires, now + self.interval)
1224
# Don't start a new checker again after same random delay
1225
return False
1226
# Re-run this periodically if run by GLib.timeout_add
428
try:
429
logger.info(u"Starting checker %r for %s",
430
command, self.name)
431
# We don't need to redirect stdout and stderr, since
432
# in normal mode, that is already done by daemon(),
433
# and in debug mode we don't want to. (Stdin is
434
# always replaced by /dev/null.)
435
self.checker = subprocess.Popen(command,
436
close_fds=True,
437
shell=True, cwd=u"/")
438
self.checker_callback_tag = (gobject.child_watch_add
439
(self.checker.pid,
440
self.checker_callback,
441
data=command))
442
# The checker may have completed before the gobject
443
# watch was added. Check for this.
444
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
445
if pid:
446
gobject.source_remove(self.checker_callback_tag)
447
self.checker_callback(pid, status, command)
448
except OSError, error:
449
logger.error(u"Failed to start subprocess: %s",
450
error)
451
# Re-run this periodically if run by gobject.timeout_add
1227
452
return True
1228
453
1229
454
def stop_checker(self):
1230
455
"""Force the checker process, if any, to stop."""
1231
456
if self.checker_callback_tag:
1232
GLib.source_remove(self.checker_callback_tag)
457
gobject.source_remove(self.checker_callback_tag)
1233
458
self.checker_callback_tag = None
1234
if getattr(self, "checker", None) is None:
459
if getattr(self, u"checker", None) is None:
1235
460
return
1236
log.debug("Stopping checker for %(name)s", vars(self))
1237
self.checker.terminate()
461
logger.debug(u"Stopping checker for %(name)s", vars(self))
462
try:
463
os.kill(self.checker.pid, signal.SIGTERM)
464
#os.sleep(0.5)
465
#if self.checker.poll() is None:
466
# os.kill(self.checker.pid, signal.SIGKILL)
467
except OSError, error:
468
if error.errno != errno.ESRCH: # No such process
469
raise
1238
470
self.checker = None
1239
1240
1241
def dbus_service_property(dbus_interface,
1242
signature="v",
1243
access="readwrite",
1244
byte_arrays=False):
471
472
def still_valid(self):
473
"""Has the timeout not yet passed for this client?"""
474
if not getattr(self, u"enabled", False):
475
return False
476
now = datetime.datetime.utcnow()
477
if self.last_checked_ok is None:
478
return now < (self.created + self.timeout)
479
else:
480
return now < (self.last_checked_ok + self.timeout)
481
482
483
def dbus_service_property(dbus_interface, signature=u"v",
484
access=u"readwrite", byte_arrays=False):
1245
485
"""Decorators for marking methods of a DBusObjectWithProperties to
1246
486
become properties on the D-Bus.
1247
487
1248
488
The decorated method will be called with no arguments by "Get"
1249
489
and with one argument by "Set".
1250
490
1251
491
The parameters, where they are supported, are the same as
1252
492
dbus.service.method, except there is only "signature", since the
1253
493
type from Get() and the type sent to Set() is the same.
1254
494
"""
1255
# Encoding deeply encoded byte arrays is not supported yet by the
1256
# "Set" method, so we fail early here:
1257
if byte_arrays and signature != "ay":
1258
raise ValueError("Byte arrays not supported for non-'ay'"
1259
" signature {!r}".format(signature))
1260
1261
495
def decorator(func):
1262
496
func._dbus_is_property = True
1263
497
func._dbus_interface = dbus_interface
1264
498
func._dbus_signature = signature
1265
499
func._dbus_access = access
1266
500
func._dbus_name = func.__name__
1267
if func._dbus_name.endswith("_dbus_property"):
501
if func._dbus_name.endswith(u"_dbus_property"):
1268
502
func._dbus_name = func._dbus_name[:-14]
1269
func._dbus_get_args_options = {"byte_arrays": byte_arrays}
1270
return func
1271
1272
return decorator
1273
1274
1275
def dbus_interface_annotations(dbus_interface):
1276
"""Decorator for marking functions returning interface annotations
1277
1278
Usage:
1279
1280
@dbus_interface_annotations("org.example.Interface")
1281
def _foo(self): # Function name does not matter
1282
return {"org.freedesktop.DBus.Deprecated": "true",
1283
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1284
"false"}
1285
"""
1286
1287
def decorator(func):
1288
func._dbus_is_interface = True
1289
func._dbus_interface = dbus_interface
1290
func._dbus_name = dbus_interface
1291
return func
1292
1293
return decorator
1294
1295
1296
def dbus_annotations(annotations):
1297
"""Decorator to annotate D-Bus methods, signals or properties
1298
Usage:
1299
1300
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1301
"org.freedesktop.DBus.Property."
1302
"EmitsChangedSignal": "false"})
1303
@dbus_service_property("org.example.Interface", signature="b",
1304
access="r")
1305
def Property_dbus_property(self):
1306
return dbus.Boolean(False)
1307
1308
See also the DBusObjectWithAnnotations class.
1309
"""
1310
1311
def decorator(func):
1312
func._dbus_annotations = annotations
1313
return func
1314
503
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
504
return func
1315
505
return decorator
1316
506
1317
507
1318
508
class DBusPropertyException(dbus.exceptions.DBusException):
1319
509
"""A base class for D-Bus property-related exceptions
1320
510
"""
1321
pass
511
def __unicode__(self):
512
return unicode(str(self))
1322
513
1323
514
1324
515
class DBusPropertyAccessException(DBusPropertyException):
1333
524
pass
1334
525
1335
526
1336
class DBusObjectWithAnnotations(dbus.service.Object):
1337
"""A D-Bus object with annotations.
1338
1339
Classes inheriting from this can use the dbus_annotations
1340
decorator to add annotations to methods or signals.
1341
"""
1342
1343
@staticmethod
1344
def _is_dbus_thing(thing):
1345
"""Returns a function testing if an attribute is a D-Bus thing
1346
1347
If called like _is_dbus_thing("method") it returns a function
1348
suitable for use as predicate to inspect.getmembers().
1349
"""
1350
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1351
False)
1352
1353
def _get_all_dbus_things(self, thing):
1354
"""Returns a generator of (name, attribute) pairs
1355
"""
1356
return ((getattr(athing.__get__(self), "_dbus_name", name),
1357
athing.__get__(self))
1358
for cls in self.__class__.__mro__
1359
for name, athing in
1360
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1361
1362
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1363
out_signature="s",
1364
path_keyword="object_path",
1365
connection_keyword="connection")
1366
def Introspect(self, object_path, connection):
1367
"""Overloading of standard D-Bus method.
1368
1369
Inserts annotation tags on methods and signals.
1370
"""
1371
xmlstring = dbus.service.Object.Introspect(self, object_path,
1372
connection)
1373
try:
1374
document = xml.dom.minidom.parseString(xmlstring)
1375
1376
for if_tag in document.getElementsByTagName("interface"):
1377
# Add annotation tags
1378
for typ in ("method", "signal"):
1379
for tag in if_tag.getElementsByTagName(typ):
1380
annots = dict()
1381
for name, prop in (self.
1382
_get_all_dbus_things(typ)):
1383
if (name == tag.getAttribute("name")
1384
and prop._dbus_interface
1385
== if_tag.getAttribute("name")):
1386
annots.update(getattr(
1387
prop, "_dbus_annotations", {}))
1388
for name, value in annots.items():
1389
ann_tag = document.createElement(
1390
"annotation")
1391
ann_tag.setAttribute("name", name)
1392
ann_tag.setAttribute("value", value)
1393
tag.appendChild(ann_tag)
1394
# Add interface annotation tags
1395
for annotation, value in dict(
1396
itertools.chain.from_iterable(
1397
annotations().items()
1398
for name, annotations
1399
in self._get_all_dbus_things("interface")
1400
if name == if_tag.getAttribute("name")
1401
)).items():
1402
ann_tag = document.createElement("annotation")
1403
ann_tag.setAttribute("name", annotation)
1404
ann_tag.setAttribute("value", value)
1405
if_tag.appendChild(ann_tag)
1406
# Fix argument name for the Introspect method itself
1407
if (if_tag.getAttribute("name")
1408
== dbus.INTROSPECTABLE_IFACE):
1409
for cn in if_tag.getElementsByTagName("method"):
1410
if cn.getAttribute("name") == "Introspect":
1411
for arg in cn.getElementsByTagName("arg"):
1412
if (arg.getAttribute("direction")
1413
== "out"):
1414
arg.setAttribute("name",
1415
"xml_data")
1416
xmlstring = document.toxml("utf-8")
1417
document.unlink()
1418
except (AttributeError, xml.dom.DOMException,
1419
xml.parsers.expat.ExpatError) as error:
1420
log.error("Failed to override Introspection method",
1421
exc_info=error)
1422
return xmlstring
1423
1424
1425
class DBusObjectWithProperties(DBusObjectWithAnnotations):
527
class DBusObjectWithProperties(dbus.service.Object):
1426
528
"""A D-Bus object with properties.
1427
529
1428
530
Classes inheriting from this can use the dbus_service_property
1429
531
decorator to expose methods as D-Bus properties. It exposes the
1430
532
standard Get(), Set(), and GetAll() methods on the D-Bus.
1431
533
"""
1432
534
535
@staticmethod
536
def _is_dbus_property(obj):
537
return getattr(obj, u"_dbus_is_property", False)
538
539
def _get_all_dbus_properties(self):
540
"""Returns a generator of (name, attribute) pairs
541
"""
542
return ((prop._dbus_name, prop)
543
for name, prop in
544
inspect.getmembers(self, self._is_dbus_property))
545
1433
546
def _get_dbus_property(self, interface_name, property_name):
1434
547
"""Returns a bound method if one exists which is a D-Bus
1435
548
property with the specified name and interface.
1436
549
"""
1437
for cls in self.__class__.__mro__:
1438
for name, value in inspect.getmembers(
1439
cls, self._is_dbus_thing("property")):
1440
if (value._dbus_name == property_name
1441
and value._dbus_interface == interface_name):
1442
return value.__get__(self)
1443
550
for name in (property_name,
551
property_name + u"_dbus_property"):
552
prop = getattr(self, name, None)
553
if (prop is None
554
or not self._is_dbus_property(prop)
555
or prop._dbus_name != property_name
556
or (interface_name and prop._dbus_interface
557
and interface_name != prop._dbus_interface)):
558
continue
559
return prop
1444
560
# No such property
1445
raise DBusPropertyNotFound("{}:{}.{}".format(
1446
self.dbus_object_path, interface_name, property_name))
1447
1448
@classmethod
1449
def _get_all_interface_names(cls):
1450
"""Get a sequence of all interfaces supported by an object"""
1451
return (name for name in set(getattr(getattr(x, attr),
1452
"_dbus_interface", None)
1453
for x in (inspect.getmro(cls))
1454
for attr in dir(x))
1455
if name is not None)
1456
1457
@dbus.service.method(dbus.PROPERTIES_IFACE,
1458
in_signature="ss",
1459
out_signature="v")
561
raise DBusPropertyNotFound(self.dbus_object_path + u":"
562
+ interface_name + u"."
563
+ property_name)
564
565
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
566
out_signature=u"v")
1460
567
def Get(self, interface_name, property_name):
1461
568
"""Standard D-Bus property Get() method, see D-Bus standard.
1462
569
"""
1463
570
prop = self._get_dbus_property(interface_name, property_name)
1464
if prop._dbus_access == "write":
571
if prop._dbus_access == u"write":
1465
572
raise DBusPropertyAccessException(property_name)
1466
573
value = prop()
1467
if not hasattr(value, "variant_level"):
574
if not hasattr(value, u"variant_level"):
1468
575
return value
1469
576
return type(value)(value, variant_level=value.variant_level+1)
1470
1471
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
577
578
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1472
579
def Set(self, interface_name, property_name, value):
1473
580
"""Standard D-Bus property Set() method, see D-Bus standard.
1474
581
"""
1475
582
prop = self._get_dbus_property(interface_name, property_name)
1476
if prop._dbus_access == "read":
583
if prop._dbus_access == u"read":
1477
584
raise DBusPropertyAccessException(property_name)
1478
if prop._dbus_get_args_options["byte_arrays"]:
1479
# The byte_arrays option is not supported yet on
1480
# signatures other than "ay".
1481
if prop._dbus_signature != "ay":
1482
raise ValueError("Byte arrays not supported for non-"
1483
"'ay' signature {!r}"
1484
.format(prop._dbus_signature))
1485
value = dbus.ByteArray(bytes(value))
585
if prop._dbus_get_args_options[u"byte_arrays"]:
586
value = dbus.ByteArray(''.join(unichr(byte)
587
for byte in value))
1486
588
prop(value)
1487
1488
@dbus.service.method(dbus.PROPERTIES_IFACE,
1489
in_signature="s",
1490
out_signature="a{sv}")
589
590
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
591
out_signature=u"a{sv}")
1491
592
def GetAll(self, interface_name):
1492
593
"""Standard D-Bus property GetAll() method, see D-Bus
1493
594
standard.
1494
595
1495
596
Note: Will not include properties with access="write".
1496
597
"""
1497
properties = {}
1498
for name, prop in self._get_all_dbus_things("property"):
598
all = {}
599
for name, prop in self._get_all_dbus_properties():
1499
600
if (interface_name
1500
601
and interface_name != prop._dbus_interface):
1501
602
# Interface non-empty but did not match
1502
603
continue
1503
604
# Ignore write-only properties
1504
if prop._dbus_access == "write":
605
if prop._dbus_access == u"write":
1505
606
continue
1506
607
value = prop()
1507
if not hasattr(value, "variant_level"):
1508
properties[name] = value
608
if not hasattr(value, u"variant_level"):
609
all[name] = value
1509
610
continue
1510
properties[name] = type(value)(
1511
value, variant_level=value.variant_level + 1)
1512
return dbus.Dictionary(properties, signature="sv")
1513
1514
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1515
def PropertiesChanged(self, interface_name, changed_properties,
1516
invalidated_properties):
1517
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1518
standard.
1519
"""
1520
pass
1521
1522
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1523
out_signature="s",
1524
path_keyword="object_path",
1525
connection_keyword="connection")
1526
def Introspect(self, object_path, connection):
1527
"""Overloading of standard D-Bus method.
1528
1529
Inserts property tags and interface annotation tags.
1530
"""
1531
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1532
object_path,
1533
connection)
1534
try:
1535
document = xml.dom.minidom.parseString(xmlstring)
1536
1537
def make_tag(document, name, prop):
1538
e = document.createElement("property")
1539
e.setAttribute("name", name)
1540
e.setAttribute("type", prop._dbus_signature)
1541
e.setAttribute("access", prop._dbus_access)
1542
return e
1543
1544
for if_tag in document.getElementsByTagName("interface"):
1545
# Add property tags
1546
for tag in (make_tag(document, name, prop)
1547
for name, prop
1548
in self._get_all_dbus_things("property")
1549
if prop._dbus_interface
1550
== if_tag.getAttribute("name")):
1551
if_tag.appendChild(tag)
1552
# Add annotation tags for properties
1553
for tag in if_tag.getElementsByTagName("property"):
1554
annots = dict()
1555
for name, prop in self._get_all_dbus_things(
1556
"property"):
1557
if (name == tag.getAttribute("name")
1558
and prop._dbus_interface
1559
== if_tag.getAttribute("name")):
1560
annots.update(getattr(
1561
prop, "_dbus_annotations", {}))
1562
for name, value in annots.items():
1563
ann_tag = document.createElement(
1564
"annotation")
1565
ann_tag.setAttribute("name", name)
1566
ann_tag.setAttribute("value", value)
1567
tag.appendChild(ann_tag)
1568
# Add the names to the return values for the
1569
# "org.freedesktop.DBus.Properties" methods
1570
if (if_tag.getAttribute("name")
1571
== "org.freedesktop.DBus.Properties"):
1572
for cn in if_tag.getElementsByTagName("method"):
1573
if cn.getAttribute("name") == "Get":
1574
for arg in cn.getElementsByTagName("arg"):
1575
if (arg.getAttribute("direction")
1576
== "out"):
1577
arg.setAttribute("name", "value")
1578
elif cn.getAttribute("name") == "GetAll":
1579
for arg in cn.getElementsByTagName("arg"):
1580
if (arg.getAttribute("direction")
1581
== "out"):
1582
arg.setAttribute("name", "props")
1583
xmlstring = document.toxml("utf-8")
1584
document.unlink()
1585
except (AttributeError, xml.dom.DOMException,
1586
xml.parsers.expat.ExpatError) as error:
1587
log.error("Failed to override Introspection method",
1588
exc_info=error)
1589
return xmlstring
1590
1591
1592
try:
1593
dbus.OBJECT_MANAGER_IFACE
1594
except AttributeError:
1595
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1596
1597
1598
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1599
"""A D-Bus object with an ObjectManager.
1600
1601
Classes inheriting from this exposes the standard
1602
GetManagedObjects call and the InterfacesAdded and
1603
InterfacesRemoved signals on the standard
1604
"org.freedesktop.DBus.ObjectManager" interface.
1605
1606
Note: No signals are sent automatically; they must be sent
1607
manually.
1608
"""
1609
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1610
out_signature="a{oa{sa{sv}}}")
1611
def GetManagedObjects(self):
1612
"""This function must be overridden"""
1613
raise NotImplementedError()
1614
1615
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1616
signature="oa{sa{sv}}")
1617
def InterfacesAdded(self, object_path, interfaces_and_properties):
1618
pass
1619
1620
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1621
def InterfacesRemoved(self, object_path, interfaces):
1622
pass
1623
1624
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1625
out_signature="s",
1626
path_keyword="object_path",
1627
connection_keyword="connection")
1628
def Introspect(self, object_path, connection):
1629
"""Overloading of standard D-Bus method.
1630
1631
Override return argument name of GetManagedObjects to be
1632
"objpath_interfaces_and_properties"
1633
"""
1634
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1635
object_path,
1636
connection)
1637
try:
1638
document = xml.dom.minidom.parseString(xmlstring)
1639
1640
for if_tag in document.getElementsByTagName("interface"):
1641
# Fix argument name for the GetManagedObjects method
1642
if (if_tag.getAttribute("name")
1643
== dbus.OBJECT_MANAGER_IFACE):
1644
for cn in if_tag.getElementsByTagName("method"):
1645
if (cn.getAttribute("name")
1646
== "GetManagedObjects"):
1647
for arg in cn.getElementsByTagName("arg"):
1648
if (arg.getAttribute("direction")
1649
== "out"):
1650
arg.setAttribute(
1651
"name",
1652
"objpath_interfaces"
1653
"_and_properties")
1654
xmlstring = document.toxml("utf-8")
1655
document.unlink()
1656
except (AttributeError, xml.dom.DOMException,
1657
xml.parsers.expat.ExpatError) as error:
1658
log.error("Failed to override Introspection method",
1659
exc_info=error)
1660
return xmlstring
1661
1662
1663
def datetime_to_dbus(dt, variant_level=0):
1664
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1665
if dt is None:
1666
return dbus.String("", variant_level=variant_level)
1667
return dbus.String(dt.isoformat(), variant_level=variant_level)
1668
1669
1670
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1671
"""A class decorator; applied to a subclass of
1672
dbus.service.Object, it will add alternate D-Bus attributes with
1673
interface names according to the "alt_interface_names" mapping.
1674
Usage:
1675
1676
@alternate_dbus_interfaces({"org.example.Interface":
1677
"net.example.AlternateInterface"})
1678
class SampleDBusObject(dbus.service.Object):
1679
@dbus.service.method("org.example.Interface")
1680
def SampleDBusMethod():
1681
pass
1682
1683
The above "SampleDBusMethod" on "SampleDBusObject" will be
1684
reachable via two interfaces: "org.example.Interface" and
1685
"net.example.AlternateInterface", the latter of which will have
1686
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1687
"true", unless "deprecate" is passed with a False value.
1688
1689
This works for methods and signals, and also for D-Bus properties
1690
(from DBusObjectWithProperties) and interfaces (from the
1691
dbus_interface_annotations decorator).
1692
"""
1693
1694
def wrapper(cls):
1695
for orig_interface_name, alt_interface_name in (
1696
alt_interface_names.items()):
1697
attr = {}
1698
interface_names = set()
1699
# Go though all attributes of the class
1700
for attrname, attribute in inspect.getmembers(cls):
1701
# Ignore non-D-Bus attributes, and D-Bus attributes
1702
# with the wrong interface name
1703
if (not hasattr(attribute, "_dbus_interface")
1704
or not attribute._dbus_interface.startswith(
1705
orig_interface_name)):
1706
continue
1707
# Create an alternate D-Bus interface name based on
1708
# the current name
1709
alt_interface = attribute._dbus_interface.replace(
1710
orig_interface_name, alt_interface_name)
1711
interface_names.add(alt_interface)
1712
# Is this a D-Bus signal?
1713
if getattr(attribute, "_dbus_is_signal", False):
1714
# Extract the original non-method undecorated
1715
# function by black magic
1716
if sys.version_info.major == 2:
1717
nonmethod_func = (dict(
1718
zip(attribute.func_code.co_freevars,
1719
attribute.__closure__))
1720
["func"].cell_contents)
1721
else:
1722
nonmethod_func = (dict(
1723
zip(attribute.__code__.co_freevars,
1724
attribute.__closure__))
1725
["func"].cell_contents)
1726
# Create a new, but exactly alike, function
1727
# object, and decorate it to be a new D-Bus signal
1728
# with the alternate D-Bus interface name
1729
new_function = copy_function(nonmethod_func)
1730
new_function = (dbus.service.signal(
1731
alt_interface,
1732
attribute._dbus_signature)(new_function))
1733
# Copy annotations, if any
1734
try:
1735
new_function._dbus_annotations = dict(
1736
attribute._dbus_annotations)
1737
except AttributeError:
1738
pass
1739
1740
# Define a creator of a function to call both the
1741
# original and alternate functions, so both the
1742
# original and alternate signals gets sent when
1743
# the function is called
1744
def fixscope(func1, func2):
1745
"""This function is a scope container to pass
1746
func1 and func2 to the "call_both" function
1747
outside of its arguments"""
1748
1749
@functools.wraps(func2)
1750
def call_both(*args, **kwargs):
1751
"""This function will emit two D-Bus
1752
signals by calling func1 and func2"""
1753
func1(*args, **kwargs)
1754
func2(*args, **kwargs)
1755
# Make wrapper function look like a D-Bus
1756
# signal
1757
for name, attr in inspect.getmembers(func2):
1758
if name.startswith("_dbus_"):
1759
setattr(call_both, name, attr)
1760
1761
return call_both
1762
# Create the "call_both" function and add it to
1763
# the class
1764
attr[attrname] = fixscope(attribute, new_function)
1765
# Is this a D-Bus method?
1766
elif getattr(attribute, "_dbus_is_method", False):
1767
# Create a new, but exactly alike, function
1768
# object. Decorate it to be a new D-Bus method
1769
# with the alternate D-Bus interface name. Add it
1770
# to the class.
1771
attr[attrname] = (
1772
dbus.service.method(
1773
alt_interface,
1774
attribute._dbus_in_signature,
1775
attribute._dbus_out_signature)
1776
(copy_function(attribute)))
1777
# Copy annotations, if any
1778
try:
1779
attr[attrname]._dbus_annotations = dict(
1780
attribute._dbus_annotations)
1781
except AttributeError:
1782
pass
1783
# Is this a D-Bus property?
1784
elif getattr(attribute, "_dbus_is_property", False):
1785
# Create a new, but exactly alike, function
1786
# object, and decorate it to be a new D-Bus
1787
# property with the alternate D-Bus interface
1788
# name. Add it to the class.
1789
attr[attrname] = (dbus_service_property(
1790
alt_interface, attribute._dbus_signature,
1791
attribute._dbus_access,
1792
attribute._dbus_get_args_options
1793
["byte_arrays"])
1794
(copy_function(attribute)))
1795
# Copy annotations, if any
1796
try:
1797
attr[attrname]._dbus_annotations = dict(
1798
attribute._dbus_annotations)
1799
except AttributeError:
1800
pass
1801
# Is this a D-Bus interface?
1802
elif getattr(attribute, "_dbus_is_interface", False):
1803
# Create a new, but exactly alike, function
1804
# object. Decorate it to be a new D-Bus interface
1805
# with the alternate D-Bus interface name. Add it
1806
# to the class.
1807
attr[attrname] = (
1808
dbus_interface_annotations(alt_interface)
1809
(copy_function(attribute)))
1810
if deprecate:
1811
# Deprecate all alternate interfaces
1812
iname = "_AlternateDBusNames_interface_annotation{}"
1813
for interface_name in interface_names:
1814
1815
@dbus_interface_annotations(interface_name)
1816
def func(self):
1817
return {"org.freedesktop.DBus.Deprecated":
1818
"true"}
1819
# Find an unused name
1820
for aname in (iname.format(i)
1821
for i in itertools.count()):
1822
if aname not in attr:
1823
attr[aname] = func
1824
break
1825
if interface_names:
1826
# Replace the class with a new subclass of it with
1827
# methods, signals, etc. as created above.
1828
if sys.version_info.major == 2:
1829
cls = type(b"{}Alternate".format(cls.__name__),
1830
(cls, ), attr)
1831
else:
1832
cls = type("{}Alternate".format(cls.__name__),
1833
(cls, ), attr)
1834
return cls
1835
1836
return wrapper
1837
1838
1839
@alternate_dbus_interfaces({"se.recompile.Mandos":
1840
"se.bsnet.fukt.Mandos"})
611
all[name] = type(value)(value, variant_level=
612
value.variant_level+1)
613
return dbus.Dictionary(all, signature=u"sv")
614
615
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
616
out_signature=u"s",
617
path_keyword='object_path',
618
connection_keyword='connection')
619
def Introspect(self, object_path, connection):
620
"""Standard D-Bus method, overloaded to insert property tags.
621
"""
622
xmlstring = dbus.service.Object.Introspect(self, object_path,
623
connection)
624
document = xml.dom.minidom.parseString(xmlstring)
625
del xmlstring
626
def make_tag(document, name, prop):
627
e = document.createElement(u"property")
628
e.setAttribute(u"name", name)
629
e.setAttribute(u"type", prop._dbus_signature)
630
e.setAttribute(u"access", prop._dbus_access)
631
return e
632
for if_tag in document.getElementsByTagName(u"interface"):
633
for tag in (make_tag(document, name, prop)
634
for name, prop
635
in self._get_all_dbus_properties()
636
if prop._dbus_interface
637
== if_tag.getAttribute(u"name")):
638
if_tag.appendChild(tag)
639
xmlstring = document.toxml(u"utf-8")
640
document.unlink()
641
return xmlstring
642
643
1841
644
class ClientDBus(Client, DBusObjectWithProperties):
1842
645
"""A Client class using D-Bus
1843
646
1844
647
Attributes:
1845
648
dbus_object_path: dbus.ObjectPath
1846
649
bus: dbus.SystemBus()
1847
650
"""
1848
1849
runtime_expansions = (Client.runtime_expansions
1850
+ ("dbus_object_path", ))
1851
1852
_interface = "se.recompile.Mandos.Client"
1853
1854
651
# dbus.service.Object doesn't use super(), so we can't either.
1855
1856
def __init__(self, bus=None, *args, **kwargs):
652
653
def __init__(self, bus = None, *args, **kwargs):
1857
654
self.bus = bus
1858
655
Client.__init__(self, *args, **kwargs)
1859
656
# Only now, when this client is initialized, can it show up on
1860
657
# the D-Bus
1861
client_object_name = str(self.name).translate(
1862
{ord("."): ord("_"),
1863
ord("-"): ord("_")})
1864
self.dbus_object_path = dbus.ObjectPath(
1865
"/clients/" + client_object_name)
658
self.dbus_object_path = (dbus.ObjectPath
659
(u"/clients/"
660
+ self.name.replace(u".", u"_")))
1866
661
DBusObjectWithProperties.__init__(self, self.bus,
1867
662
self.dbus_object_path)
1868
1869
def notifychangeproperty(transform_func, dbus_name,
1870
type_func=lambda x: x,
1871
variant_level=1,
1872
invalidate_only=False,
1873
_interface=_interface):
1874
""" Modify a variable so that it's a property which announces
1875
its changes to DBus.
1876
1877
transform_fun: Function that takes a value and a variant_level
1878
and transforms it to a D-Bus type.
1879
dbus_name: D-Bus name of the variable
1880
type_func: Function that transform the value before sending it
1881
to the D-Bus. Default: no transform
1882
variant_level: D-Bus variant level. Default: 1
1883
"""
1884
attrname = "_{}".format(dbus_name)
1885
1886
def setter(self, value):
1887
if hasattr(self, "dbus_object_path"):
1888
if (not hasattr(self, attrname) or
1889
type_func(getattr(self, attrname, None))
1890
!= type_func(value)):
1891
if invalidate_only:
1892
self.PropertiesChanged(
1893
_interface, dbus.Dictionary(),
1894
dbus.Array((dbus_name, )))
1895
else:
1896
dbus_value = transform_func(
1897
type_func(value),
1898
variant_level=variant_level)
1899
self.PropertyChanged(dbus.String(dbus_name),
1900
dbus_value)
1901
self.PropertiesChanged(
1902
_interface,
1903
dbus.Dictionary({dbus.String(dbus_name):
1904
dbus_value}),
1905
dbus.Array())
1906
setattr(self, attrname, value)
1907
1908
return property(lambda self: getattr(self, attrname), setter)
1909
1910
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1911
approvals_pending = notifychangeproperty(dbus.Boolean,
1912
"ApprovalPending",
1913
type_func=bool)
1914
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1915
last_enabled = notifychangeproperty(datetime_to_dbus,
1916
"LastEnabled")
1917
checker = notifychangeproperty(
1918
dbus.Boolean, "CheckerRunning",
1919
type_func=lambda checker: checker is not None)
1920
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1921
"LastCheckedOK")
1922
last_checker_status = notifychangeproperty(dbus.Int16,
1923
"LastCheckerStatus")
1924
last_approval_request = notifychangeproperty(
1925
datetime_to_dbus, "LastApprovalRequest")
1926
approved_by_default = notifychangeproperty(dbus.Boolean,
1927
"ApprovedByDefault")
1928
approval_delay = notifychangeproperty(
1929
dbus.UInt64, "ApprovalDelay",
1930
type_func=lambda td: td.total_seconds() * 1000)
1931
approval_duration = notifychangeproperty(
1932
dbus.UInt64, "ApprovalDuration",
1933
type_func=lambda td: td.total_seconds() * 1000)
1934
host = notifychangeproperty(dbus.String, "Host")
1935
timeout = notifychangeproperty(
1936
dbus.UInt64, "Timeout",
1937
type_func=lambda td: td.total_seconds() * 1000)
1938
extended_timeout = notifychangeproperty(
1939
dbus.UInt64, "ExtendedTimeout",
1940
type_func=lambda td: td.total_seconds() * 1000)
1941
interval = notifychangeproperty(
1942
dbus.UInt64, "Interval",
1943
type_func=lambda td: td.total_seconds() * 1000)
1944
checker_command = notifychangeproperty(dbus.String, "Checker")
1945
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1946
invalidate_only=True)
1947
1948
del notifychangeproperty
1949
663
664
@staticmethod
665
def _datetime_to_dbus(dt, variant_level=0):
666
"""Convert a UTC datetime.datetime() to a D-Bus type."""
667
return dbus.String(dt.isoformat(),
668
variant_level=variant_level)
669
670
def enable(self):
671
oldstate = getattr(self, u"enabled", False)
672
r = Client.enable(self)
673
if oldstate != self.enabled:
674
# Emit D-Bus signals
675
self.PropertyChanged(dbus.String(u"enabled"),
676
dbus.Boolean(True, variant_level=1))
677
self.PropertyChanged(
678
dbus.String(u"last_enabled"),
679
self._datetime_to_dbus(self.last_enabled,
680
variant_level=1))
681
return r
682
683
def disable(self, signal = True):
684
oldstate = getattr(self, u"enabled", False)
685
r = Client.disable(self)
686
if signal and oldstate != self.enabled:
687
# Emit D-Bus signal
688
self.PropertyChanged(dbus.String(u"enabled"),
689
dbus.Boolean(False, variant_level=1))
690
return r
691
1950
692
def __del__(self, *args, **kwargs):
1951
693
try:
1952
694
self.remove_from_connection()
1953
695
except LookupError:
1954
696
pass
1955
if hasattr(DBusObjectWithProperties, "__del__"):
697
if hasattr(DBusObjectWithProperties, u"__del__"):
1956
698
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1957
699
Client.__del__(self, *args, **kwargs)
1958
1959
def checker_callback(self, source, condition,
1960
connection, command, *args, **kwargs):
1961
ret = Client.checker_callback(self, source, condition,
1962
connection, command, *args,
1963
**kwargs)
1964
exitstatus = self.last_checker_status
1965
if exitstatus >= 0:
700
701
def checker_callback(self, pid, condition, command,
702
*args, **kwargs):
703
self.checker_callback_tag = None
704
self.checker = None
705
# Emit D-Bus signal
706
self.PropertyChanged(dbus.String(u"checker_running"),
707
dbus.Boolean(False, variant_level=1))
708
if os.WIFEXITED(condition):
709
exitstatus = os.WEXITSTATUS(condition)
1966
710
# Emit D-Bus signal
1967
711
self.CheckerCompleted(dbus.Int16(exitstatus),
1968
# This is specific to GNU libC
1969
dbus.Int64(exitstatus << 8),
712
dbus.Int64(condition),
1970
713
dbus.String(command))
1971
714
else:
1972
715
# Emit D-Bus signal
1973
716
self.CheckerCompleted(dbus.Int16(-1),
1974
dbus.Int64(
1975
# This is specific to GNU libC
1976
(exitstatus << 8)
1977
| self.last_checker_signal),
717
dbus.Int64(condition),
1978
718
dbus.String(command))
1979
return ret
1980
719
720
return Client.checker_callback(self, pid, condition, command,
721
*args, **kwargs)
722
723
def checked_ok(self, *args, **kwargs):
724
r = Client.checked_ok(self, *args, **kwargs)
725
# Emit D-Bus signal
726
self.PropertyChanged(
727
dbus.String(u"last_checked_ok"),
728
(self._datetime_to_dbus(self.last_checked_ok,
729
variant_level=1)))
730
return r
731
1981
732
def start_checker(self, *args, **kwargs):
1982
old_checker_pid = getattr(self.checker, "pid", None)
733
old_checker = self.checker
734
if self.checker is not None:
735
old_checker_pid = self.checker.pid
736
else:
737
old_checker_pid = None
1983
738
r = Client.start_checker(self, *args, **kwargs)
1984
739
# Only if new checker process was started
1985
740
if (self.checker is not None
1986
741
and old_checker_pid != self.checker.pid):
1987
742
# Emit D-Bus signal
1988
743
self.CheckerStarted(self.current_checker_command)
1989
return r
1990
1991
def _reset_approved(self):
1992
self.approved = None
1993
return False
1994
1995
def approve(self, value=True):
1996
self.approved = value
1997
GLib.timeout_add(int(self.approval_duration.total_seconds()
1998
* 1000), self._reset_approved)
1999
self.send_changedstate()
2000
2001
# D-Bus methods, signals & properties
2002
2003
# Interfaces
2004
2005
# Signals
2006
744
self.PropertyChanged(
745
dbus.String(u"checker_running"),
746
dbus.Boolean(True, variant_level=1))
747
return r
748
749
def stop_checker(self, *args, **kwargs):
750
old_checker = getattr(self, u"checker", None)
751
r = Client.stop_checker(self, *args, **kwargs)
752
if (old_checker is not None
753
and getattr(self, u"checker", None) is None):
754
self.PropertyChanged(dbus.String(u"checker_running"),
755
dbus.Boolean(False, variant_level=1))
756
return r
757
758
## D-Bus methods & signals
759
_interface = u"se.bsnet.fukt.Mandos.Client"
760
761
# CheckedOK - method
762
@dbus.service.method(_interface)
763
def CheckedOK(self):
764
return self.checked_ok()
765
2007
766
# CheckerCompleted - signal
2008
@dbus.service.signal(_interface, signature="nxs")
767
@dbus.service.signal(_interface, signature=u"nxs")
2009
768
def CheckerCompleted(self, exitcode, waitstatus, command):
2010
769
"D-Bus signal"
2011
770
pass
2012
771
2013
772
# CheckerStarted - signal
2014
@dbus.service.signal(_interface, signature="s")
773
@dbus.service.signal(_interface, signature=u"s")
2015
774
def CheckerStarted(self, command):
2016
775
"D-Bus signal"
2017
776
pass
2018
777
2019
778
# PropertyChanged - signal
2020
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2021
@dbus.service.signal(_interface, signature="sv")
779
@dbus.service.signal(_interface, signature=u"sv")
2022
780
def PropertyChanged(self, property, value):
2023
781
"D-Bus signal"
2024
782
pass
2025
2026
# GotSecret - signal
783
784
# ReceivedSecret - signal
2027
785
@dbus.service.signal(_interface)
2028
def GotSecret(self):
2029
"""D-Bus signal
2030
Is sent after a successful transfer of secret from the Mandos
2031
server to mandos-client
2032
"""
786
def ReceivedSecret(self):
787
"D-Bus signal"
2033
788
pass
2034
789
2035
790
# Rejected - signal
2036
@dbus.service.signal(_interface, signature="s")
2037
def Rejected(self, reason):
791
@dbus.service.signal(_interface)
792
def Rejected(self):
2038
793
"D-Bus signal"
2039
794
pass
2040
2041
# NeedApproval - signal
2042
@dbus.service.signal(_interface, signature="tb")
2043
def NeedApproval(self, timeout, default):
2044
"D-Bus signal"
2045
return self.need_approval()
2046
2047
# Methods
2048
2049
# Approve - method
2050
@dbus.service.method(_interface, in_signature="b")
2051
def Approve(self, value):
2052
self.approve(value)
2053
2054
# CheckedOK - method
2055
@dbus.service.method(_interface)
2056
def CheckedOK(self):
2057
self.checked_ok()
2058
795
2059
796
# Enable - method
2060
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2061
797
@dbus.service.method(_interface)
2062
798
def Enable(self):
2063
799
"D-Bus method"
2064
800
self.enable()
2065
801
2066
802
# StartChecker - method
2067
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2068
803
@dbus.service.method(_interface)
2069
804
def StartChecker(self):
2070
805
"D-Bus method"
2071
806
self.start_checker()
2072
807
2073
808
# Disable - method
2074
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2075
809
@dbus.service.method(_interface)
2076
810
def Disable(self):
2077
811
"D-Bus method"
2078
812
self.disable()
2079
813
2080
814
# StopChecker - method
2081
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2082
815
@dbus.service.method(_interface)
2083
816
def StopChecker(self):
2084
817
self.stop_checker()
2085
2086
# Properties
2087
2088
# ApprovalPending - property
2089
@dbus_service_property(_interface, signature="b", access="read")
2090
def ApprovalPending_dbus_property(self):
2091
return dbus.Boolean(bool(self.approvals_pending))
2092
2093
# ApprovedByDefault - property
2094
@dbus_service_property(_interface,
2095
signature="b",
2096
access="readwrite")
2097
def ApprovedByDefault_dbus_property(self, value=None):
2098
if value is None: # get
2099
return dbus.Boolean(self.approved_by_default)
2100
self.approved_by_default = bool(value)
2101
2102
# ApprovalDelay - property
2103
@dbus_service_property(_interface,
2104
signature="t",
2105
access="readwrite")
2106
def ApprovalDelay_dbus_property(self, value=None):
2107
if value is None: # get
2108
return dbus.UInt64(self.approval_delay.total_seconds()
2109
* 1000)
2110
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2111
2112
# ApprovalDuration - property
2113
@dbus_service_property(_interface,
2114
signature="t",
2115
access="readwrite")
2116
def ApprovalDuration_dbus_property(self, value=None):
2117
if value is None: # get
2118
return dbus.UInt64(self.approval_duration.total_seconds()
2119
* 1000)
2120
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2121
2122
# Name - property
2123
@dbus_annotations(
2124
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2125
@dbus_service_property(_interface, signature="s", access="read")
2126
def Name_dbus_property(self):
818
819
# name - property
820
@dbus_service_property(_interface, signature=u"s", access=u"read")
821
def name_dbus_property(self):
2127
822
return dbus.String(self.name)
2128
2129
# KeyID - property
2130
@dbus_annotations(
2131
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2132
@dbus_service_property(_interface, signature="s", access="read")
2133
def KeyID_dbus_property(self):
2134
return dbus.String(self.key_id)
2135
2136
# Fingerprint - property
2137
@dbus_annotations(
2138
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2139
@dbus_service_property(_interface, signature="s", access="read")
2140
def Fingerprint_dbus_property(self):
823
824
# fingerprint - property
825
@dbus_service_property(_interface, signature=u"s", access=u"read")
826
def fingerprint_dbus_property(self):
2141
827
return dbus.String(self.fingerprint)
2142
2143
# Host - property
2144
@dbus_service_property(_interface,
2145
signature="s",
2146
access="readwrite")
2147
def Host_dbus_property(self, value=None):
828
829
# host - property
830
@dbus_service_property(_interface, signature=u"s",
831
access=u"readwrite")
832
def host_dbus_property(self, value=None):
2148
833
if value is None: # get
2149
834
return dbus.String(self.host)
2150
self.host = str(value)
2151
2152
# Created - property
2153
@dbus_annotations(
2154
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2155
@dbus_service_property(_interface, signature="s", access="read")
2156
def Created_dbus_property(self):
2157
return datetime_to_dbus(self.created)
2158
2159
# LastEnabled - property
2160
@dbus_service_property(_interface, signature="s", access="read")
2161
def LastEnabled_dbus_property(self):
2162
return datetime_to_dbus(self.last_enabled)
2163
2164
# Enabled - property
2165
@dbus_service_property(_interface,
2166
signature="b",
2167
access="readwrite")
2168
def Enabled_dbus_property(self, value=None):
835
self.host = value
836
# Emit D-Bus signal
837
self.PropertyChanged(dbus.String(u"host"),
838
dbus.String(value, variant_level=1))
839
840
# created - property
841
@dbus_service_property(_interface, signature=u"s", access=u"read")
842
def created_dbus_property(self):
843
return dbus.String(self._datetime_to_dbus(self.created))
844
845
# last_enabled - property
846
@dbus_service_property(_interface, signature=u"s", access=u"read")
847
def last_enabled_dbus_property(self):
848
if self.last_enabled is None:
849
return dbus.String(u"")
850
return dbus.String(self._datetime_to_dbus(self.last_enabled))
851
852
# enabled - property
853
@dbus_service_property(_interface, signature=u"b",
854
access=u"readwrite")
855
def enabled_dbus_property(self, value=None):
2169
856
if value is None: # get
2170
857
return dbus.Boolean(self.enabled)
2171
858
if value:
2172
859
self.enable()
2173
860
else:
2174
861
self.disable()
2175
2176
# LastCheckedOK - property
2177
@dbus_service_property(_interface,
2178
signature="s",
2179
access="readwrite")
2180
def LastCheckedOK_dbus_property(self, value=None):
862
863
# last_checked_ok - property
864
@dbus_service_property(_interface, signature=u"s",
865
access=u"readwrite")
866
def last_checked_ok_dbus_property(self, value=None):
2181
867
if value is not None:
2182
868
self.checked_ok()
2183
869
return
2184
return datetime_to_dbus(self.last_checked_ok)
2185
2186
# LastCheckerStatus - property
2187
@dbus_service_property(_interface, signature="n", access="read")
2188
def LastCheckerStatus_dbus_property(self):
2189
return dbus.Int16(self.last_checker_status)
2190
2191
# Expires - property
2192
@dbus_service_property(_interface, signature="s", access="read")
2193
def Expires_dbus_property(self):
2194
return datetime_to_dbus(self.expires)
2195
2196
# LastApprovalRequest - property
2197
@dbus_service_property(_interface, signature="s", access="read")
2198
def LastApprovalRequest_dbus_property(self):
2199
return datetime_to_dbus(self.last_approval_request)
2200
2201
# Timeout - property
2202
@dbus_service_property(_interface,
2203
signature="t",
2204
access="readwrite")
2205
def Timeout_dbus_property(self, value=None):
870
if self.last_checked_ok is None:
871
return dbus.String(u"")
872
return dbus.String(self._datetime_to_dbus(self
873
.last_checked_ok))
874
875
# timeout - property
876
@dbus_service_property(_interface, signature=u"t",
877
access=u"readwrite")
878
def timeout_dbus_property(self, value=None):
2206
879
if value is None: # get
2207
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2208
old_timeout = self.timeout
880
return dbus.UInt64(self.timeout_milliseconds())
2209
881
self.timeout = datetime.timedelta(0, 0, 0, value)
2210
# Reschedule disabling
2211
if self.enabled:
2212
now = datetime.datetime.utcnow()
2213
self.expires += self.timeout - old_timeout
2214
if self.expires <= now:
2215
# The timeout has passed
2216
self.disable()
2217
else:
2218
if (getattr(self, "disable_initiator_tag", None)
2219
is None):
2220
return
2221
GLib.source_remove(self.disable_initiator_tag)
2222
self.disable_initiator_tag = GLib.timeout_add(
2223
int((self.expires - now).total_seconds() * 1000),
2224
self.disable)
2225
2226
# ExtendedTimeout - property
2227
@dbus_service_property(_interface,
2228
signature="t",
2229
access="readwrite")
2230
def ExtendedTimeout_dbus_property(self, value=None):
2231
if value is None: # get
2232
return dbus.UInt64(self.extended_timeout.total_seconds()
2233
* 1000)
2234
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2235
2236
# Interval - property
2237
@dbus_service_property(_interface,
2238
signature="t",
2239
access="readwrite")
2240
def Interval_dbus_property(self, value=None):
2241
if value is None: # get
2242
return dbus.UInt64(self.interval.total_seconds() * 1000)
882
# Emit D-Bus signal
883
self.PropertyChanged(dbus.String(u"timeout"),
884
dbus.UInt64(value, variant_level=1))
885
if getattr(self, u"disable_initiator_tag", None) is None:
886
return
887
# Reschedule timeout
888
gobject.source_remove(self.disable_initiator_tag)
889
self.disable_initiator_tag = None
890
time_to_die = (self.
891
_timedelta_to_milliseconds((self
892
.last_checked_ok
893
+ self.timeout)
894
- datetime.datetime
895
.utcnow()))
896
if time_to_die <= 0:
897
# The timeout has passed
898
self.disable()
899
else:
900
self.disable_initiator_tag = (gobject.timeout_add
901
(time_to_die, self.disable))
902
903
# interval - property
904
@dbus_service_property(_interface, signature=u"t",
905
access=u"readwrite")
906
def interval_dbus_property(self, value=None):
907
if value is None: # get
908
return dbus.UInt64(self.interval_milliseconds())
2243
909
self.interval = datetime.timedelta(0, 0, 0, value)
2244
if getattr(self, "checker_initiator_tag", None) is None:
910
# Emit D-Bus signal
911
self.PropertyChanged(dbus.String(u"interval"),
912
dbus.UInt64(value, variant_level=1))
913
if getattr(self, u"checker_initiator_tag", None) is None:
2245
914
return
2246
if self.enabled:
2247
# Reschedule checker run
2248
GLib.source_remove(self.checker_initiator_tag)
2249
self.checker_initiator_tag = GLib.timeout_add(
2250
value, self.start_checker)
2251
self.start_checker() # Start one now, too
915
# Reschedule checker run
916
gobject.source_remove(self.checker_initiator_tag)
917
self.checker_initiator_tag = (gobject.timeout_add
918
(value, self.start_checker))
919
self.start_checker() # Start one now, too
2252
920
2253
# Checker - property
2254
@dbus_service_property(_interface,
2255
signature="s",
2256
access="readwrite")
2257
def Checker_dbus_property(self, value=None):
921
# checker - property
922
@dbus_service_property(_interface, signature=u"s",
923
access=u"readwrite")
924
def checker_dbus_property(self, value=None):
2258
925
if value is None: # get
2259
926
return dbus.String(self.checker_command)
2260
self.checker_command = str(value)
2261
2262
# CheckerRunning - property
2263
@dbus_service_property(_interface,
2264
signature="b",
2265
access="readwrite")
2266
def CheckerRunning_dbus_property(self, value=None):
927
self.checker_command = value
928
# Emit D-Bus signal
929
self.PropertyChanged(dbus.String(u"checker"),
930
dbus.String(self.checker_command,
931
variant_level=1))
932
933
# checker_running - property
934
@dbus_service_property(_interface, signature=u"b",
935
access=u"readwrite")
936
def checker_running_dbus_property(self, value=None):
2267
937
if value is None: # get
2268
938
return dbus.Boolean(self.checker is not None)
2269
939
if value:
2270
940
self.start_checker()
2271
941
else:
2272
942
self.stop_checker()
2273
2274
# ObjectPath - property
2275
@dbus_annotations(
2276
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2277
"org.freedesktop.DBus.Deprecated": "true"})
2278
@dbus_service_property(_interface, signature="o", access="read")
2279
def ObjectPath_dbus_property(self):
2280
return self.dbus_object_path # is already a dbus.ObjectPath
2281
2282
# Secret = property
2283
@dbus_annotations(
2284
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2285
"invalidates"})
2286
@dbus_service_property(_interface,
2287
signature="ay",
2288
access="write",
2289
byte_arrays=True)
2290
def Secret_dbus_property(self, value):
2291
self.secret = bytes(value)
2292
943
944
# object_path - property
945
@dbus_service_property(_interface, signature=u"o", access=u"read")
946
def object_path_dbus_property(self):
947
return self.dbus_object_path # is already a dbus.ObjectPath
948
949
# secret = property
950
@dbus_service_property(_interface, signature=u"ay",
951
access=u"write", byte_arrays=True)
952
def secret_dbus_property(self, value):
953
self.secret = str(value)
954
2293
955
del _interface
2294
956
2295
957
2296
class ProxyClient:
2297
def __init__(self, child_pipe, key_id, fpr, address):
2298
self._pipe = child_pipe
2299
self._pipe.send(("init", key_id, fpr, address))
2300
if not self._pipe.recv():
2301
raise KeyError(key_id or fpr)
2302
2303
def __getattribute__(self, name):
2304
if name == "_pipe":
2305
return super(ProxyClient, self).__getattribute__(name)
2306
self._pipe.send(("getattr", name))
2307
data = self._pipe.recv()
2308
if data[0] == "data":
2309
return data[1]
2310
if data[0] == "function":
2311
2312
def func(*args, **kwargs):
2313
self._pipe.send(("funcall", name, args, kwargs))
2314
return self._pipe.recv()[1]
2315
2316
return func
2317
2318
def __setattr__(self, name, value):
2319
if name == "_pipe":
2320
return super(ProxyClient, self).__setattr__(name, value)
2321
self._pipe.send(("setattr", name, value))
2322
2323
2324
958
class ClientHandler(socketserver.BaseRequestHandler, object):
2325
959
"""A class to handle client connections.
2326
960
2327
961
Instantiated once for each connection to handle it.
2328
962
Note: This will run in its own forked process."""
2329
963
2330
964
def handle(self):
2331
with contextlib.closing(self.server.child_pipe) as child_pipe:
2332
log.info("TCP connection from: %s",
2333
str(self.client_address))
2334
log.debug("Pipe FD: %d", self.server.child_pipe.fileno())
2335
2336
session = gnutls.ClientSession(self.request)
2337
2338
# priority = ":".join(("NONE", "+VERS-TLS1.1",
2339
# "+AES-256-CBC", "+SHA1",
2340
# "+COMP-NULL", "+CTYPE-OPENPGP",
2341
# "+DHE-DSS"))
965
logger.info(u"TCP connection from: %s",
966
unicode(self.client_address))
967
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
968
# Open IPC pipe to parent process
969
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
970
session = (gnutls.connection
971
.ClientSession(self.request,
972
gnutls.connection
973
.X509Credentials()))
974
975
line = self.request.makefile().readline()
976
logger.debug(u"Protocol version: %r", line)
977
try:
978
if int(line.strip().split()[0]) > 1:
979
raise RuntimeError
980
except (ValueError, IndexError, RuntimeError), error:
981
logger.error(u"Unknown protocol version: %s", error)
982
return
983
984
# Note: gnutls.connection.X509Credentials is really a
985
# generic GnuTLS certificate credentials object so long as
986
# no X.509 keys are added to it. Therefore, we can use it
987
# here despite using OpenPGP certificates.
988
989
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
990
# u"+AES-256-CBC", u"+SHA1",
991
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
992
# u"+DHE-DSS"))
2342
993
# Use a fallback default, since this MUST be set.
2343
994
priority = self.server.gnutls_priority
2344
995
if priority is None:
2345
priority = "NORMAL"
2346
gnutls.priority_set_direct(session,
2347
priority.encode("utf-8"), None)
2348
2349
# Start communication using the Mandos protocol
2350
# Get protocol number
2351
line = self.request.makefile().readline()
2352
log.debug("Protocol version: %r", line)
2353
try:
2354
if int(line.strip().split()[0]) > 1:
2355
raise RuntimeError(line)
2356
except (ValueError, IndexError, RuntimeError) as error:
2357
log.error("Unknown protocol version: %s", error)
2358
return
2359
2360
# Start GnuTLS connection
996
priority = u"NORMAL"
997
(gnutls.library.functions
998
.gnutls_priority_set_direct(session._c_object,
999
priority, None))
1000
2361
1001
try:
2362
1002
session.handshake()
2363
except gnutls.Error as error:
2364
log.warning("Handshake failed: %s", error)
1003
except gnutls.errors.GNUTLSError, error:
1004
logger.warning(u"Handshake failed: %s", error)
2365
1005
# Do not run session.bye() here: the session is not
2366
1006
# established. Just abandon the request.
2367
1007
return
2368
log.debug("Handshake succeeded")
2369
2370
approval_required = False
1008
logger.debug(u"Handshake succeeded")
2371
1009
try:
2372
if gnutls.has_rawpk:
2373
fpr = b""
2374
try:
2375
key_id = self.key_id(
2376
self.peer_certificate(session))
2377
except (TypeError, gnutls.Error) as error:
2378
log.warning("Bad certificate: %s", error)
2379
return
2380
log.debug("Key ID: %s",
2381
key_id.decode("utf-8",
2382
errors="replace"))
2383
2384
else:
2385
key_id = b""
2386
try:
2387
fpr = self.fingerprint(
2388
self.peer_certificate(session))
2389
except (TypeError, gnutls.Error) as error:
2390
log.warning("Bad certificate: %s", error)
2391
return
2392
log.debug("Fingerprint: %s", fpr)
2393
2394
try:
2395
client = ProxyClient(child_pipe, key_id, fpr,
2396
self.client_address)
2397
except KeyError:
2398
return
2399
2400
if client.approval_delay:
2401
delay = client.approval_delay
2402
client.approvals_pending += 1
2403
approval_required = True
2404
2405
while True:
2406
if not client.enabled:
2407
log.info("Client %s is disabled", client.name)
2408
if self.server.use_dbus:
2409
# Emit D-Bus signal
2410
client.Rejected("Disabled")
2411
return
2412
2413
if client.approved or not client.approval_delay:
2414
# We are approved or approval is disabled
2415
break
2416
elif client.approved is None:
2417
log.info("Client %s needs approval",
2418
client.name)
2419
if self.server.use_dbus:
2420
# Emit D-Bus signal
2421
client.NeedApproval(
2422
client.approval_delay.total_seconds()
2423
* 1000, client.approved_by_default)
2424
else:
2425
log.warning("Client %s was not approved",
2426
client.name)
2427
if self.server.use_dbus:
2428
# Emit D-Bus signal
2429
client.Rejected("Denied")
2430
return
2431
2432
# wait until timeout or approved
2433
time = datetime.datetime.now()
2434
client.changedstate.acquire()
2435
client.changedstate.wait(delay.total_seconds())
2436
client.changedstate.release()
2437
time2 = datetime.datetime.now()
2438
if (time2 - time) >= delay:
2439
if not client.approved_by_default:
2440
log.warning("Client %s timed out while"
2441
" waiting for approval",
2442
client.name)
2443
if self.server.use_dbus:
2444
# Emit D-Bus signal
2445
client.Rejected("Approval timed out")
2446
return
2447
else:
2448
break
2449
else:
2450
delay -= time2 - time
2451
2452
try:
2453
session.send(client.secret)
2454
except gnutls.Error as error:
2455
log.warning("gnutls send failed", exc_info=error)
2456
return
2457
2458
log.info("Sending secret to %s", client.name)
2459
# bump the timeout using extended_timeout
2460
client.bump_timeout(client.extended_timeout)
2461
if self.server.use_dbus:
2462
# Emit D-Bus signal
2463
client.GotSecret()
2464
2465
finally:
2466
if approval_required:
2467
client.approvals_pending -= 1
2468
try:
2469
session.bye()
2470
except gnutls.Error as error:
2471
log.warning("GnuTLS bye failed", exc_info=error)
2472
1010
fpr = self.fingerprint(self.peer_certificate(session))
1011
except (TypeError, gnutls.errors.GNUTLSError), error:
1012
logger.warning(u"Bad certificate: %s", error)
1013
session.bye()
1014
return
1015
logger.debug(u"Fingerprint: %s", fpr)
1016
1017
for c in self.server.clients:
1018
if c.fingerprint == fpr:
1019
client = c
1020
break
1021
else:
1022
ipc.write(u"NOTFOUND %s %s\n"
1023
% (fpr, unicode(self.client_address)))
1024
session.bye()
1025
return
1026
# Have to check if client.still_valid(), since it is
1027
# possible that the client timed out while establishing
1028
# the GnuTLS session.
1029
if not client.still_valid():
1030
ipc.write(u"INVALID %s\n" % client.name)
1031
session.bye()
1032
return
1033
ipc.write(u"SENDING %s\n" % client.name)
1034
sent_size = 0
1035
while sent_size < len(client.secret):
1036
sent = session.send(client.secret[sent_size:])
1037
logger.debug(u"Sent: %d, remaining: %d",
1038
sent, len(client.secret)
1039
- (sent_size + sent))
1040
sent_size += sent
1041
session.bye()
1042
2473
1043
@staticmethod
2474
1044
def peer_certificate(session):
2475
"Return the peer's certificate as a bytestring"
2476
try:
2477
cert_type = gnutls.certificate_type_get2(
2478
session, gnutls.CTYPE_PEERS)
2479
except AttributeError:
2480
cert_type = gnutls.certificate_type_get(session)
2481
if gnutls.has_rawpk:
2482
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2483
else:
2484
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2485
# If not a valid certificate type...
2486
if cert_type not in valid_cert_types:
2487
log.info("Cert type %r not in %r", cert_type,
2488
valid_cert_types)
2489
# ...return invalid data
2490
return b""
1045
"Return the peer's OpenPGP certificate as a bytestring"
1046
# If not an OpenPGP certificate...
1047
if (gnutls.library.functions
1048
.gnutls_certificate_type_get(session._c_object)
1049
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1050
# ...do the normal thing
1051
return session.peer_certificate
2491
1052
list_size = ctypes.c_uint(1)
2492
cert_list = (gnutls.certificate_get_peers
2493
(session, ctypes.byref(list_size)))
1053
cert_list = (gnutls.library.functions
1054
.gnutls_certificate_get_peers
1055
(session._c_object, ctypes.byref(list_size)))
2494
1056
if not bool(cert_list) and list_size.value != 0:
2495
raise gnutls.Error("error getting peer certificate")
1057
raise gnutls.errors.GNUTLSError(u"error getting peer"
1058
u" certificate")
2496
1059
if list_size.value == 0:
2497
1060
return None
2498
1061
cert = cert_list[0]
2499
1062
return ctypes.string_at(cert.data, cert.size)
2500
2501
@staticmethod
2502
def key_id(certificate):
2503
"Convert a certificate bytestring to a hexdigit key ID"
2504
# New GnuTLS "datum" with the public key
2505
datum = gnutls.datum_t(
2506
ctypes.cast(ctypes.c_char_p(certificate),
2507
ctypes.POINTER(ctypes.c_ubyte)),
2508
ctypes.c_uint(len(certificate)))
2509
# XXX all these need to be created in the gnutls "module"
2510
# New empty GnuTLS certificate
2511
pubkey = gnutls.pubkey_t()
2512
gnutls.pubkey_init(ctypes.byref(pubkey))
2513
# Import the raw public key into the certificate
2514
gnutls.pubkey_import(pubkey,
2515
ctypes.byref(datum),
2516
gnutls.X509_FMT_DER)
2517
# New buffer for the key ID
2518
buf = ctypes.create_string_buffer(32)
2519
buf_len = ctypes.c_size_t(len(buf))
2520
# Get the key ID from the raw public key into the buffer
2521
gnutls.pubkey_get_key_id(
2522
pubkey,
2523
gnutls.KEYID_USE_SHA256,
2524
ctypes.cast(ctypes.byref(buf),
2525
ctypes.POINTER(ctypes.c_ubyte)),
2526
ctypes.byref(buf_len))
2527
# Deinit the certificate
2528
gnutls.pubkey_deinit(pubkey)
2529
2530
# Convert the buffer to a Python bytestring
2531
key_id = ctypes.string_at(buf, buf_len.value)
2532
# Convert the bytestring to hexadecimal notation
2533
hex_key_id = binascii.hexlify(key_id).upper()
2534
return hex_key_id
2535
1063
2536
1064
@staticmethod
2537
1065
def fingerprint(openpgp):
2538
1066
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2539
1067
# New GnuTLS "datum" with the OpenPGP public key
2540
datum = gnutls.datum_t(
2541
ctypes.cast(ctypes.c_char_p(openpgp),
2542
ctypes.POINTER(ctypes.c_ubyte)),
2543
ctypes.c_uint(len(openpgp)))
1068
datum = (gnutls.library.types
1069
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1070
ctypes.POINTER
1071
(ctypes.c_ubyte)),
1072
ctypes.c_uint(len(openpgp))))
2544
1073
# New empty GnuTLS certificate
2545
crt = gnutls.openpgp_crt_t()
2546
gnutls.openpgp_crt_init(ctypes.byref(crt))
1074
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1075
(gnutls.library.functions
1076
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2547
1077
# Import the OpenPGP public key into the certificate
2548
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2549
gnutls.OPENPGP_FMT_RAW)
1078
(gnutls.library.functions
1079
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1080
gnutls.library.constants
1081
.GNUTLS_OPENPGP_FMT_RAW))
2550
1082
# Verify the self signature in the key
2551
1083
crtverify = ctypes.c_uint()
2552
gnutls.openpgp_crt_verify_self(crt, 0,
2553
ctypes.byref(crtverify))
1084
(gnutls.library.functions
1085
.gnutls_openpgp_crt_verify_self(crt, 0,
1086
ctypes.byref(crtverify)))
2554
1087
if crtverify.value != 0:
2555
gnutls.openpgp_crt_deinit(crt)
2556
raise gnutls.CertificateSecurityError(code
2557
=crtverify.value)
1088
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1089
raise (gnutls.errors.CertificateSecurityError
1090
(u"Verify failed"))
2558
1091
# New buffer for the fingerprint
2559
1092
buf = ctypes.create_string_buffer(20)
2560
1093
buf_len = ctypes.c_size_t()
2561
1094
# Get the fingerprint from the certificate into the buffer
2562
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2563
ctypes.byref(buf_len))
1095
(gnutls.library.functions
1096
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1097
ctypes.byref(buf_len)))
2564
1098
# Deinit the certificate
2565
gnutls.openpgp_crt_deinit(crt)
1099
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2566
1100
# Convert the buffer to a Python bytestring
2567
1101
fpr = ctypes.string_at(buf, buf_len.value)
2568
1102
# Convert the bytestring to hexadecimal notation
2569
hex_fpr = binascii.hexlify(fpr).upper()
1103
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2570
1104
return hex_fpr
2571
1105
2572
1106
2573
class MultiprocessingMixIn:
2574
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2575
2576
def sub_process_main(self, request, address):
2577
try:
2578
self.finish_request(request, address)
2579
except Exception:
2580
self.handle_error(request, address)
2581
self.close_request(request)
2582
2583
def process_request(self, request, address):
2584
"""Start a new process to process the request."""
2585
proc = multiprocessing.Process(target=self.sub_process_main,
2586
args=(request, address))
2587
proc.start()
2588
return proc
2589
2590
2591
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
2592
""" adds a pipe to the MixIn """
2593
1107
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1108
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
2594
1109
def process_request(self, request, client_address):
2595
1110
"""Overrides and wraps the original process_request().
2596
1111
2597
1112
This function creates a new pipe in self.pipe
2598
1113
"""
2599
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2600
2601
proc = MultiprocessingMixIn.process_request(self, request,
2602
client_address)
2603
self.child_pipe.close()
2604
self.add_pipe(parent_pipe, proc)
2605
2606
def add_pipe(self, parent_pipe, proc):
1114
self.pipe = os.pipe()
1115
super(ForkingMixInWithPipe,
1116
self).process_request(request, client_address)
1117
os.close(self.pipe[1]) # close write end
1118
self.add_pipe(self.pipe[0])
1119
def add_pipe(self, pipe):
2607
1120
"""Dummy function; override as necessary"""
2608
raise NotImplementedError()
2609
2610
2611
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2612
socketserver.TCPServer):
2613
"""IPv6-capable TCP server. Accepts None as address and/or port
2614
1121
os.close(pipe)
1122
1123
1124
class IPv6_TCPServer(ForkingMixInWithPipe,
1125
socketserver.TCPServer, object):
1126
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1127
2615
1128
Attributes:
2616
1129
enabled: Boolean; whether this server is activated yet
2617
1130
interface: None or a network interface name (string)
2618
1131
use_ipv6: Boolean; to use IPv6 or not
2619
1132
"""
2620
2621
1133
def __init__(self, server_address, RequestHandlerClass,
2622
interface=None,
2623
use_ipv6=True,
2624
socketfd=None):
2625
"""If socketfd is set, use that file descriptor instead of
2626
creating a new one with socket.socket().
2627
"""
1134
interface=None, use_ipv6=True):
2628
1135
self.interface = interface
2629
1136
if use_ipv6:
2630
1137
self.address_family = socket.AF_INET6
2631
if socketfd is not None:
2632
# Save the file descriptor
2633
self.socketfd = socketfd
2634
# Save the original socket.socket() function
2635
self.socket_socket = socket.socket
2636
2637
# To implement --socket, we monkey patch socket.socket.
2638
#
2639
# (When socketserver.TCPServer is a new-style class, we
2640
# could make self.socket into a property instead of monkey
2641
# patching socket.socket.)
2642
#
2643
# Create a one-time-only replacement for socket.socket()
2644
@functools.wraps(socket.socket)
2645
def socket_wrapper(*args, **kwargs):
2646
# Restore original function so subsequent calls are
2647
# not affected.
2648
socket.socket = self.socket_socket
2649
del self.socket_socket
2650
# This time only, return a new socket object from the
2651
# saved file descriptor.
2652
return socket.fromfd(self.socketfd, *args, **kwargs)
2653
# Replace socket.socket() function with wrapper
2654
socket.socket = socket_wrapper
2655
# The socketserver.TCPServer.__init__ will call
2656
# socket.socket(), which might be our replacement,
2657
# socket_wrapper(), if socketfd was set.
2658
1138
socketserver.TCPServer.__init__(self, server_address,
2659
1139
RequestHandlerClass)
2660
2661
1140
def server_bind(self):
2662
1141
"""This overrides the normal server_bind() function
2663
1142
to bind to an interface if one was specified, and also NOT to
2664
1143
bind to an address or port if they were not specified."""
2665
global SO_BINDTODEVICE
2666
1144
if self.interface is not None:
2667
1145
if SO_BINDTODEVICE is None:
2668
# Fall back to a hard-coded value which seems to be
2669
# common enough.
2670
log.warning("SO_BINDTODEVICE not found, trying 25")
2671
SO_BINDTODEVICE = 25
2672
try:
2673
self.socket.setsockopt(
2674
socket.SOL_SOCKET, SO_BINDTODEVICE,
2675
(self.interface + "\0").encode("utf-8"))
2676
except socket.error as error:
2677
if error.errno == errno.EPERM:
2678
log.error("No permission to bind to interface %s",
2679
self.interface)
2680
elif error.errno == errno.ENOPROTOOPT:
2681
log.error("SO_BINDTODEVICE not available; cannot"
2682
" bind to interface %s", self.interface)
2683
elif error.errno == errno.ENODEV:
2684
log.error("Interface %s does not exist, cannot"
2685
" bind", self.interface)
2686
else:
2687
raise
1146
logger.error(u"SO_BINDTODEVICE does not exist;"
1147
u" cannot bind to interface %s",
1148
self.interface)
1149
else:
1150
try:
1151
self.socket.setsockopt(socket.SOL_SOCKET,
1152
SO_BINDTODEVICE,
1153
str(self.interface
1154
+ u'\0'))
1155
except socket.error, error:
1156
if error[0] == errno.EPERM:
1157
logger.error(u"No permission to"
1158
u" bind to interface %s",
1159
self.interface)
1160
elif error[0] == errno.ENOPROTOOPT:
1161
logger.error(u"SO_BINDTODEVICE not available;"
1162
u" cannot bind to interface %s",
1163
self.interface)
1164
else:
1165
raise
2688
1166
# Only bind(2) the socket if we really need to.
2689
1167
if self.server_address[0] or self.server_address[1]:
2690
if self.server_address[1]:
2691
self.allow_reuse_address = True
2692
1168
if not self.server_address[0]:
2693
1169
if self.address_family == socket.AF_INET6:
2694
any_address = "::" # in6addr_any
1170
any_address = u"::" # in6addr_any
2695
1171
else:
2696
any_address = "0.0.0.0" # INADDR_ANY
1172
any_address = socket.INADDR_ANY
2697
1173
self.server_address = (any_address,
2698
1174
self.server_address[1])
2699
1175
elif not self.server_address[1]:
2700
self.server_address = (self.server_address[0], 0)
1176
self.server_address = (self.server_address[0],
1177
0)
2701
1178
# if self.interface:
2702
1179
# self.server_address = (self.server_address[0],
2703
1180
# 0, # port
2709
1186
2710
1187
class MandosServer(IPv6_TCPServer):
2711
1188
"""Mandos server.
2712
1189
2713
1190
Attributes:
2714
1191
clients: set of Client objects
2715
1192
gnutls_priority GnuTLS priority string
2716
1193
use_dbus: Boolean; to emit D-Bus signals or not
2717
2718
Assumes a GLib.MainLoop event loop.
1194
1195
Assumes a gobject.MainLoop event loop.
2719
1196
"""
2720
2721
1197
def __init__(self, server_address, RequestHandlerClass,
2722
interface=None,
2723
use_ipv6=True,
2724
clients=None,
2725
gnutls_priority=None,
2726
use_dbus=True,
2727
socketfd=None):
1198
interface=None, use_ipv6=True, clients=None,
1199
gnutls_priority=None, use_dbus=True):
2728
1200
self.enabled = False
2729
1201
self.clients = clients
2730
1202
if self.clients is None:
2731
self.clients = {}
1203
self.clients = set()
2732
1204
self.use_dbus = use_dbus
2733
1205
self.gnutls_priority = gnutls_priority
2734
1206
IPv6_TCPServer.__init__(self, server_address,
2735
1207
RequestHandlerClass,
2736
interface=interface,
2737
use_ipv6=use_ipv6,
2738
socketfd=socketfd)
2739
1208
interface = interface,
1209
use_ipv6 = use_ipv6)
2740
1210
def server_activate(self):
2741
1211
if self.enabled:
2742
1212
return socketserver.TCPServer.server_activate(self)
2743
2744
1213
def enable(self):
2745
1214
self.enabled = True
2746
2747
def add_pipe(self, parent_pipe, proc):
1215
def add_pipe(self, pipe):
2748
1216
# Call "handle_ipc" for both data and EOF events
2749
GLib.io_add_watch(
2750
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2751
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2752
functools.partial(self.handle_ipc,
2753
parent_pipe=parent_pipe,
2754
proc=proc))
2755
2756
def handle_ipc(self, source, condition,
2757
parent_pipe=None,
2758
proc=None,
2759
client_object=None):
2760
# error, or the other end of multiprocessing.Pipe has closed
2761
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2762
# Wait for other process to exit
2763
proc.join()
2764
return False
2765
2766
# Read a request from the child
2767
request = parent_pipe.recv()
2768
command = request[0]
2769
2770
if command == "init":
2771
key_id = request[1].decode("ascii")
2772
fpr = request[2].decode("ascii")
2773
address = request[3]
2774
2775
for c in self.clients.values():
2776
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2777
"27AE41E4649B934CA495991B7852B855"):
2778
continue
2779
if key_id and c.key_id == key_id:
2780
client = c
2781
break
2782
if fpr and c.fingerprint == fpr:
2783
client = c
2784
break
2785
else:
2786
log.info("Client not found for key ID: %s, address:"
2787
" %s", key_id or fpr, address)
2788
if self.use_dbus:
2789
# Emit D-Bus signal
2790
mandos_dbus_service.ClientNotFound(key_id or fpr,
2791
address[0])
2792
parent_pipe.send(False)
2793
return False
2794
2795
GLib.io_add_watch(
2796
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2797
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2798
functools.partial(self.handle_ipc,
2799
parent_pipe=parent_pipe,
2800
proc=proc,
2801
client_object=client))
2802
parent_pipe.send(True)
2803
# remove the old hook in favor of the new above hook on
2804
# same fileno
2805
return False
2806
if command == "funcall":
2807
funcname = request[1]
2808
args = request[2]
2809
kwargs = request[3]
2810
2811
parent_pipe.send(("data", getattr(client_object,
2812
funcname)(*args,
2813
**kwargs)))
2814
2815
if command == "getattr":
2816
attrname = request[1]
2817
if isinstance(client_object.__getattribute__(attrname),
2818
collections.abc.Callable):
2819
parent_pipe.send(("function", ))
2820
else:
2821
parent_pipe.send((
2822
"data", client_object.__getattribute__(attrname)))
2823
2824
if command == "setattr":
2825
attrname = request[1]
2826
value = request[2]
2827
setattr(client_object, attrname, value)
2828
1217
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1218
self.handle_ipc)
1219
def handle_ipc(self, source, condition, file_objects={}):
1220
condition_names = {
1221
gobject.IO_IN: u"IN", # There is data to read.
1222
gobject.IO_OUT: u"OUT", # Data can be written (without
1223
# blocking).
1224
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1225
gobject.IO_ERR: u"ERR", # Error condition.
1226
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1227
# broken, usually for pipes and
1228
# sockets).
1229
}
1230
conditions_string = ' | '.join(name
1231
for cond, name in
1232
condition_names.iteritems()
1233
if cond & condition)
1234
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1235
conditions_string)
1236
1237
# Turn the pipe file descriptor into a Python file object
1238
if source not in file_objects:
1239
file_objects[source] = os.fdopen(source, u"r", 1)
1240
1241
# Read a line from the file object
1242
cmdline = file_objects[source].readline()
1243
if not cmdline: # Empty line means end of file
1244
# close the IPC pipe
1245
file_objects[source].close()
1246
del file_objects[source]
1247
1248
# Stop calling this function
1249
return False
1250
1251
logger.debug(u"IPC command: %r", cmdline)
1252
1253
# Parse and act on command
1254
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1255
1256
if cmd == u"NOTFOUND":
1257
logger.warning(u"Client not found for fingerprint: %s",
1258
args)
1259
if self.use_dbus:
1260
# Emit D-Bus signal
1261
mandos_dbus_service.ClientNotFound(args)
1262
elif cmd == u"INVALID":
1263
for client in self.clients:
1264
if client.name == args:
1265
logger.warning(u"Client %s is invalid", args)
1266
if self.use_dbus:
1267
# Emit D-Bus signal
1268
client.Rejected()
1269
break
1270
else:
1271
logger.error(u"Unknown client %s is invalid", args)
1272
elif cmd == u"SENDING":
1273
for client in self.clients:
1274
if client.name == args:
1275
logger.info(u"Sending secret to %s", client.name)
1276
client.checked_ok()
1277
if self.use_dbus:
1278
# Emit D-Bus signal
1279
client.ReceivedSecret()
1280
break
1281
else:
1282
logger.error(u"Sending secret to unknown client %s",
1283
args)
1284
else:
1285
logger.error(u"Unknown IPC command: %r", cmdline)
1286
1287
# Keep calling this function
2829
1288
return True
2830
1289
2831
1290
2832
def rfc3339_duration_to_delta(duration):
2833
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2834
2835
>>> timedelta = datetime.timedelta
2836
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2837
True
2838
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2839
True
2840
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2841
True
2842
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2843
True
2844
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2845
True
2846
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2847
True
2848
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2849
True
2850
>>> del timedelta
2851
"""
2852
2853
# Parsing an RFC 3339 duration with regular expressions is not
2854
# possible - there would have to be multiple places for the same
2855
# values, like seconds. The current code, while more esoteric, is
2856
# cleaner without depending on a parsing library. If Python had a
2857
# built-in library for parsing we would use it, but we'd like to
2858
# avoid excessive use of external libraries.
2859
2860
# New type for defining tokens, syntax, and semantics all-in-one
2861
Token = collections.namedtuple("Token", (
2862
"regexp", # To match token; if "value" is not None, must have
2863
# a "group" containing digits
2864
"value", # datetime.timedelta or None
2865
"followers")) # Tokens valid after this token
2866
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2867
# the "duration" ABNF definition in RFC 3339, Appendix A.
2868
token_end = Token(re.compile(r"$"), None, frozenset())
2869
token_second = Token(re.compile(r"(\d+)S"),
2870
datetime.timedelta(seconds=1),
2871
frozenset((token_end, )))
2872
token_minute = Token(re.compile(r"(\d+)M"),
2873
datetime.timedelta(minutes=1),
2874
frozenset((token_second, token_end)))
2875
token_hour = Token(re.compile(r"(\d+)H"),
2876
datetime.timedelta(hours=1),
2877
frozenset((token_minute, token_end)))
2878
token_time = Token(re.compile(r"T"),
2879
None,
2880
frozenset((token_hour, token_minute,
2881
token_second)))
2882
token_day = Token(re.compile(r"(\d+)D"),
2883
datetime.timedelta(days=1),
2884
frozenset((token_time, token_end)))
2885
token_month = Token(re.compile(r"(\d+)M"),
2886
datetime.timedelta(weeks=4),
2887
frozenset((token_day, token_end)))
2888
token_year = Token(re.compile(r"(\d+)Y"),
2889
datetime.timedelta(weeks=52),
2890
frozenset((token_month, token_end)))
2891
token_week = Token(re.compile(r"(\d+)W"),
2892
datetime.timedelta(weeks=1),
2893
frozenset((token_end, )))
2894
token_duration = Token(re.compile(r"P"), None,
2895
frozenset((token_year, token_month,
2896
token_day, token_time,
2897
token_week)))
2898
# Define starting values:
2899
# Value so far
2900
value = datetime.timedelta()
2901
found_token = None
2902
# Following valid tokens
2903
followers = frozenset((token_duration, ))
2904
# String left to parse
2905
s = duration
2906
# Loop until end token is found
2907
while found_token is not token_end:
2908
# Search for any currently valid tokens
2909
for token in followers:
2910
match = token.regexp.match(s)
2911
if match is not None:
2912
# Token found
2913
if token.value is not None:
2914
# Value found, parse digits
2915
factor = int(match.group(1), 10)
2916
# Add to value so far
2917
value += factor * token.value
2918
# Strip token from string
2919
s = token.regexp.sub("", s, 1)
2920
# Go to found token
2921
found_token = token
2922
# Set valid next tokens
2923
followers = found_token.followers
2924
break
2925
else:
2926
# No currently valid tokens were found
2927
raise ValueError("Invalid RFC 3339 duration: {!r}"
2928
.format(duration))
2929
# End token found
2930
return value
2931
2932
2933
1291
def string_to_delta(interval):
2934
1292
"""Parse a string and return a datetime.timedelta
2935
2936
>>> string_to_delta("7d") == datetime.timedelta(7)
2937
True
2938
>>> string_to_delta("60s") == datetime.timedelta(0, 60)
2939
True
2940
>>> string_to_delta("60m") == datetime.timedelta(0, 3600)
2941
True
2942
>>> string_to_delta("24h") == datetime.timedelta(1)
2943
True
2944
>>> string_to_delta("1w") == datetime.timedelta(7)
2945
True
2946
>>> string_to_delta("5m 30s") == datetime.timedelta(0, 330)
2947
True
1293
1294
>>> string_to_delta(u'7d')
1295
datetime.timedelta(7)
1296
>>> string_to_delta(u'60s')
1297
datetime.timedelta(0, 60)
1298
>>> string_to_delta(u'60m')
1299
datetime.timedelta(0, 3600)
1300
>>> string_to_delta(u'24h')
1301
datetime.timedelta(1)
1302
>>> string_to_delta(u'1w')
1303
datetime.timedelta(7)
1304
>>> string_to_delta(u'5m 30s')
1305
datetime.timedelta(0, 330)
2948
1306
"""
2949
2950
try:
2951
return rfc3339_duration_to_delta(interval)
2952
except ValueError:
2953
pass
2954
2955
1307
timevalue = datetime.timedelta(0)
2956
1308
for s in interval.split():
2957
1309
try:
2958
suffix = s[-1]
1310
suffix = unicode(s[-1])
2959
1311
value = int(s[:-1])
2960
if suffix == "d":
1312
if suffix == u"d":
2961
1313
delta = datetime.timedelta(value)
2962
elif suffix == "s":
1314
elif suffix == u"s":
2963
1315
delta = datetime.timedelta(0, value)
2964
elif suffix == "m":
1316
elif suffix == u"m":
2965
1317
delta = datetime.timedelta(0, 0, 0, 0, value)
2966
elif suffix == "h":
1318
elif suffix == u"h":
2967
1319
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2968
elif suffix == "w":
1320
elif suffix == u"w":
2969
1321
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2970
1322
else:
2971
raise ValueError("Unknown suffix {!r}".format(suffix))
2972
except IndexError as e:
2973
raise ValueError(*(e.args))
1323
raise ValueError
1324
except (ValueError, IndexError):
1325
raise ValueError
2974
1326
timevalue += delta
2975
1327
return timevalue
2976
1328
2977
1329
2978
def daemon(nochdir=False, noclose=False):
1330
def if_nametoindex(interface):
1331
"""Call the C function if_nametoindex(), or equivalent
1332
1333
Note: This function cannot accept a unicode string."""
1334
global if_nametoindex
1335
try:
1336
if_nametoindex = (ctypes.cdll.LoadLibrary
1337
(ctypes.util.find_library(u"c"))
1338
.if_nametoindex)
1339
except (OSError, AttributeError):
1340
logger.warning(u"Doing if_nametoindex the hard way")
1341
def if_nametoindex(interface):
1342
"Get an interface index the hard way, i.e. using fcntl()"
1343
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1344
with closing(socket.socket()) as s:
1345
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1346
struct.pack(str(u"16s16x"),
1347
interface))
1348
interface_index = struct.unpack(str(u"I"),
1349
ifreq[16:20])[0]
1350
return interface_index
1351
return if_nametoindex(interface)
1352
1353
1354
def daemon(nochdir = False, noclose = False):
2979
1355
"""See daemon(3). Standard BSD Unix function.
2980
1356
2981
1357
This should really exist as os.daemon, but it doesn't (yet)."""
2982
1358
if os.fork():
2983
1359
sys.exit()
2984
1360
os.setsid()
2985
1361
if not nochdir:
2986
os.chdir("/")
1362
os.chdir(u"/")
2987
1363
if os.fork():
2988
1364
sys.exit()
2989
1365
if not noclose:
2990
1366
# Close all standard open file descriptors
2991
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1367
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2992
1368
if not stat.S_ISCHR(os.fstat(null).st_mode):
2993
1369
raise OSError(errno.ENODEV,
2994
"{} not a character device"
2995
.format(os.devnull))
1370
u"/dev/null not a character device")
2996
1371
os.dup2(null, sys.stdin.fileno())
2997
1372
os.dup2(null, sys.stdout.fileno())
2998
1373
os.dup2(null, sys.stderr.fileno())
3001
1376
3002
1377
3003
1378
def main():
3004
1379
3005
1380
##################################################################
3006
1381
# Parsing of options, both command line and config file
3007
3008
parser = argparse.ArgumentParser()
3009
parser.add_argument("-v", "--version", action="version",
3010
version="%(prog)s {}".format(version),
3011
help="show version number and exit")
3012
parser.add_argument("-i", "--interface", metavar="IF",
3013
help="Bind to interface IF")
3014
parser.add_argument("-a", "--address",
3015
help="Address to listen for requests on")
3016
parser.add_argument("-p", "--port", type=int,
3017
help="Port number to receive requests on")
3018
parser.add_argument("--check", action="store_true",
3019
help="Run self-test")
3020
parser.add_argument("--debug", action="store_true",
3021
help="Debug mode; run in foreground and log"
3022
" to terminal", default=None)
3023
parser.add_argument("--debuglevel", metavar="LEVEL",
3024
help="Debug level for stdout output")
3025
parser.add_argument("--priority", help="GnuTLS"
3026
" priority string (see GnuTLS documentation)")
3027
parser.add_argument("--servicename",
3028
metavar="NAME", help="Zeroconf service name")
3029
parser.add_argument("--configdir",
3030
default="/etc/mandos", metavar="DIR",
3031
help="Directory to search for configuration"
3032
" files")
3033
parser.add_argument("--no-dbus", action="store_false",
3034
dest="use_dbus", help="Do not provide D-Bus"
3035
" system bus interface", default=None)
3036
parser.add_argument("--no-ipv6", action="store_false",
3037
dest="use_ipv6", help="Do not use IPv6",
3038
default=None)
3039
parser.add_argument("--no-restore", action="store_false",
3040
dest="restore", help="Do not restore stored"
3041
" state", default=None)
3042
parser.add_argument("--socket", type=int,
3043
help="Specify a file descriptor to a network"
3044
" socket to use instead of creating one")
3045
parser.add_argument("--statedir", metavar="DIR",
3046
help="Directory to save/restore state in")
3047
parser.add_argument("--foreground", action="store_true",
3048
help="Run in foreground", default=None)
3049
parser.add_argument("--no-zeroconf", action="store_false",
3050
dest="zeroconf", help="Do not use Zeroconf",
3051
default=None)
3052
3053
options = parser.parse_args()
3054
1382
1383
parser = optparse.OptionParser(version = "%%prog %s" % version)
1384
parser.add_option("-i", u"--interface", type=u"string",
1385
metavar="IF", help=u"Bind to interface IF")
1386
parser.add_option("-a", u"--address", type=u"string",
1387
help=u"Address to listen for requests on")
1388
parser.add_option("-p", u"--port", type=u"int",
1389
help=u"Port number to receive requests on")
1390
parser.add_option("--check", action=u"store_true",
1391
help=u"Run self-test")
1392
parser.add_option("--debug", action=u"store_true",
1393
help=u"Debug mode; run in foreground and log to"
1394
u" terminal")
1395
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1396
u" priority string (see GnuTLS documentation)")
1397
parser.add_option("--servicename", type=u"string",
1398
metavar=u"NAME", help=u"Zeroconf service name")
1399
parser.add_option("--configdir", type=u"string",
1400
default=u"/etc/mandos", metavar=u"DIR",
1401
help=u"Directory to search for configuration"
1402
u" files")
1403
parser.add_option("--no-dbus", action=u"store_false",
1404
dest=u"use_dbus", help=u"Do not provide D-Bus"
1405
u" system bus interface")
1406
parser.add_option("--no-ipv6", action=u"store_false",
1407
dest=u"use_ipv6", help=u"Do not use IPv6")
1408
options = parser.parse_args()[0]
1409
1410
if options.check:
1411
import doctest
1412
doctest.testmod()
1413
sys.exit()
1414
3055
1415
# Default values for config file for server-global settings
3056
if gnutls.has_rawpk:
3057
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3058
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3059
else:
3060
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3061
":+SIGN-DSA-SHA256")
3062
server_defaults = {"interface": "",
3063
"address": "",
3064
"port": "",
3065
"debug": "False",
3066
"priority": priority,
3067
"servicename": "Mandos",
3068
"use_dbus": "True",
3069
"use_ipv6": "True",
3070
"debuglevel": "",
3071
"restore": "True",
3072
"socket": "",
3073
"statedir": "/var/lib/mandos",
3074
"foreground": "False",
3075
"zeroconf": "True",
3076
}
3077
del priority
3078
1416
server_defaults = { u"interface": u"",
1417
u"address": u"",
1418
u"port": u"",
1419
u"debug": u"False",
1420
u"priority":
1421
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1422
u"servicename": u"Mandos",
1423
u"use_dbus": u"True",
1424
u"use_ipv6": u"True",
1425
}
1426
3079
1427
# Parse config file for server-global settings
3080
server_config = configparser.ConfigParser(server_defaults)
1428
server_config = configparser.SafeConfigParser(server_defaults)
3081
1429
del server_defaults
3082
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3083
# Convert the ConfigParser object to a dict
1430
server_config.read(os.path.join(options.configdir,
1431
u"mandos.conf"))
1432
# Convert the SafeConfigParser object to a dict
3084
1433
server_settings = server_config.defaults()
3085
1434
# Use the appropriate methods on the non-string config options
3086
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3087
"foreground", "zeroconf"):
3088
server_settings[option] = server_config.getboolean("DEFAULT",
1435
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1436
server_settings[option] = server_config.getboolean(u"DEFAULT",
3089
1437
option)
3090
1438
if server_settings["port"]:
3091
server_settings["port"] = server_config.getint("DEFAULT",
3092
"port")
3093
if server_settings["socket"]:
3094
server_settings["socket"] = server_config.getint("DEFAULT",
3095
"socket")
3096
# Later, stdin will, and stdout and stderr might, be dup'ed
3097
# over with an opened os.devnull. But we don't want this to
3098
# happen with a supplied network socket.
3099
if 0 <= server_settings["socket"] <= 2:
3100
server_settings["socket"] = os.dup(server_settings
3101
["socket"])
1439
server_settings["port"] = server_config.getint(u"DEFAULT",
1440
u"port")
3102
1441
del server_config
3103
1442
3104
1443
# Override the settings from the config file with command line
3105
1444
# options, if set.
3106
for option in ("interface", "address", "port", "debug",
3107
"priority", "servicename", "configdir", "use_dbus",
3108
"use_ipv6", "debuglevel", "restore", "statedir",
3109
"socket", "foreground", "zeroconf"):
1445
for option in (u"interface", u"address", u"port", u"debug",
1446
u"priority", u"servicename", u"configdir",
1447
u"use_dbus", u"use_ipv6"):
3110
1448
value = getattr(options, option)
3111
1449
if value is not None:
3112
1450
server_settings[option] = value
3113
1451
del options
3114
1452
# Force all strings to be unicode
3115
1453
for option in server_settings.keys():
3116
if isinstance(server_settings[option], bytes):
3117
server_settings[option] = (server_settings[option]
3118
.decode("utf-8"))
3119
# Force all boolean options to be boolean
3120
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3121
"foreground", "zeroconf"):
3122
server_settings[option] = bool(server_settings[option])
3123
# Debug implies foreground
3124
if server_settings["debug"]:
3125
server_settings["foreground"] = True
1454
if type(server_settings[option]) is str:
1455
server_settings[option] = unicode(server_settings[option])
3126
1456
# Now we have our good server settings in "server_settings"
3127
1457
3128
1458
##################################################################
3129
3130
if (not server_settings["zeroconf"]
3131
and not (server_settings["port"]
3132
or server_settings["socket"] != "")):
3133
parser.error("Needs port or socket to work without Zeroconf")
3134
1459
3135
1460
# For convenience
3136
debug = server_settings["debug"]
3137
debuglevel = server_settings["debuglevel"]
3138
use_dbus = server_settings["use_dbus"]
3139
use_ipv6 = server_settings["use_ipv6"]
3140
stored_state_path = os.path.join(server_settings["statedir"],
3141
stored_state_file)
3142
foreground = server_settings["foreground"]
3143
zeroconf = server_settings["zeroconf"]
3144
3145
if debug:
3146
initlogger(debug, logging.DEBUG)
3147
else:
3148
if not debuglevel:
3149
initlogger(debug)
3150
else:
3151
level = getattr(logging, debuglevel.upper())
3152
initlogger(debug, level)
3153
3154
if server_settings["servicename"] != "Mandos":
3155
syslogger.setFormatter(
3156
logging.Formatter("Mandos ({}) [%(process)d]:"
3157
" %(levelname)s: %(message)s".format(
3158
server_settings["servicename"])))
3159
1461
debug = server_settings[u"debug"]
1462
use_dbus = server_settings[u"use_dbus"]
1463
use_ipv6 = server_settings[u"use_ipv6"]
1464
1465
if not debug:
1466
syslogger.setLevel(logging.WARNING)
1467
console.setLevel(logging.WARNING)
1468
1469
if server_settings[u"servicename"] != u"Mandos":
1470
syslogger.setFormatter(logging.Formatter
1471
(u'Mandos (%s) [%%(process)d]:'
1472
u' %%(levelname)s: %%(message)s'
1473
% server_settings[u"servicename"]))
1474
3160
1475
# Parse config file with clients
3161
client_config = configparser.ConfigParser(Client.client_defaults)
3162
client_config.read(os.path.join(server_settings["configdir"],
3163
"clients.conf"))
3164
1476
client_defaults = { u"timeout": u"1h",
1477
u"interval": u"5m",
1478
u"checker": u"fping -q -- %%(host)s",
1479
u"host": u"",
1480
}
1481
client_config = configparser.SafeConfigParser(client_defaults)
1482
client_config.read(os.path.join(server_settings[u"configdir"],
1483
u"clients.conf"))
1484
3165
1485
global mandos_dbus_service
3166
1486
mandos_dbus_service = None
3167
3168
socketfd = None
3169
if server_settings["socket"] != "":
3170
socketfd = server_settings["socket"]
3171
tcp_server = MandosServer(
3172
(server_settings["address"], server_settings["port"]),
3173
ClientHandler,
3174
interface=(server_settings["interface"] or None),
3175
use_ipv6=use_ipv6,
3176
gnutls_priority=server_settings["priority"],
3177
use_dbus=use_dbus,
3178
socketfd=socketfd)
3179
if not foreground:
3180
pidfilename = "/run/mandos.pid"
3181
if not os.path.isdir("/run/."):
3182
pidfilename = "/var/run/mandos.pid"
3183
pidfile = None
3184
try:
3185
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3186
except IOError as e:
3187
log.error("Could not open file %r", pidfilename,
3188
exc_info=e)
3189
3190
for name, group in (("_mandos", "_mandos"),
3191
("mandos", "mandos"),
3192
("nobody", "nogroup")):
3193
try:
3194
uid = pwd.getpwnam(name).pw_uid
3195
gid = pwd.getpwnam(group).pw_gid
3196
break
1487
1488
tcp_server = MandosServer((server_settings[u"address"],
1489
server_settings[u"port"]),
1490
ClientHandler,
1491
interface=server_settings[u"interface"],
1492
use_ipv6=use_ipv6,
1493
gnutls_priority=
1494
server_settings[u"priority"],
1495
use_dbus=use_dbus)
1496
pidfilename = u"/var/run/mandos.pid"
1497
try:
1498
pidfile = open(pidfilename, u"w")
1499
except IOError:
1500
logger.error(u"Could not open file %r", pidfilename)
1501
1502
try:
1503
uid = pwd.getpwnam(u"_mandos").pw_uid
1504
gid = pwd.getpwnam(u"_mandos").pw_gid
1505
except KeyError:
1506
try:
1507
uid = pwd.getpwnam(u"mandos").pw_uid
1508
gid = pwd.getpwnam(u"mandos").pw_gid
3197
1509
except KeyError:
3198
continue
3199
else:
3200
uid = 65534
3201
gid = 65534
1510
try:
1511
uid = pwd.getpwnam(u"nobody").pw_uid
1512
gid = pwd.getpwnam(u"nobody").pw_gid
1513
except KeyError:
1514
uid = 65534
1515
gid = 65534
3202
1516
try:
3203
1517
os.setgid(gid)
3204
1518
os.setuid(uid)
3205
log.debug("Did setuid/setgid to %s:%s", uid, gid)
3206
except OSError as error:
3207
log.warning("Failed to setuid/setgid to %s:%s: %s", uid, gid,
3208
os.strerror(error.errno))
3209
if error.errno != errno.EPERM:
3210
raise
3211
1519
except OSError, error:
1520
if error[0] != errno.EPERM:
1521
raise error
1522
1523
# Enable all possible GnuTLS debugging
3212
1524
if debug:
3213
# Enable all possible GnuTLS debugging
3214
3215
1525
# "Use a log level over 10 to enable all debugging options."
3216
1526
# - GnuTLS manual
3217
gnutls.global_set_log_level(11)
3218
3219
@gnutls.log_func
1527
gnutls.library.functions.gnutls_global_set_log_level(11)
1528
1529
@gnutls.library.types.gnutls_log_func
3220
1530
def debug_gnutls(level, string):
3221
log.debug("GnuTLS: %s",
3222
string[:-1].decode("utf-8", errors="replace"))
3223
3224
gnutls.global_set_log_function(debug_gnutls)
3225
3226
# Redirect stdin so all checkers get /dev/null
3227
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3228
os.dup2(null, sys.stdin.fileno())
3229
if null > 2:
3230
os.close(null)
3231
3232
# Need to fork before connecting to D-Bus
3233
if not foreground:
3234
# Close all input and output, do double fork, etc.
3235
daemon()
3236
3237
if gi.version_info < (3, 10, 2):
3238
# multiprocessing will use threads, so before we use GLib we
3239
# need to inform GLib that threads will be used.
3240
GLib.threads_init()
3241
1531
logger.debug(u"GnuTLS: %s", string[:-1])
1532
1533
(gnutls.library.functions
1534
.gnutls_global_set_log_function(debug_gnutls))
1535
3242
1536
global main_loop
3243
1537
# From the Avahi example code
3244
DBusGMainLoop(set_as_default=True)
3245
main_loop = GLib.MainLoop()
3246
if use_dbus or zeroconf:
3247
bus = dbus.SystemBus()
1538
DBusGMainLoop(set_as_default=True )
1539
main_loop = gobject.MainLoop()
1540
bus = dbus.SystemBus()
3248
1541
# End of Avahi example code
3249
1542
if use_dbus:
3250
try:
3251
bus_name = dbus.service.BusName("se.recompile.Mandos",
3252
bus,
3253
do_not_queue=True)
3254
old_bus_name = dbus.service.BusName(
3255
"se.bsnet.fukt.Mandos", bus,
3256
do_not_queue=True)
3257
except dbus.exceptions.DBusException as e:
3258
log.error("Disabling D-Bus:", exc_info=e)
3259
use_dbus = False
3260
server_settings["use_dbus"] = False
3261
tcp_server.use_dbus = False
3262
if zeroconf:
3263
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3264
service = AvahiServiceToSyslog(
3265
name=server_settings["servicename"],
3266
servicetype="_mandos._tcp",
3267
protocol=protocol,
3268
bus=bus)
3269
if server_settings["interface"]:
3270
service.interface = if_nametoindex(
3271
server_settings["interface"].encode("utf-8"))
3272
3273
global multiprocessing_manager
3274
multiprocessing_manager = multiprocessing.Manager()
3275
1543
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1544
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1545
service = AvahiService(name = server_settings[u"servicename"],
1546
servicetype = u"_mandos._tcp",
1547
protocol = protocol, bus = bus)
1548
if server_settings["interface"]:
1549
service.interface = (if_nametoindex
1550
(str(server_settings[u"interface"])))
1551
3276
1552
client_class = Client
3277
1553
if use_dbus:
3278
client_class = functools.partial(ClientDBus, bus=bus)
3279
3280
client_settings = Client.config_parser(client_config)
3281
old_client_settings = {}
3282
clients_data = {}
3283
3284
# This is used to redirect stdout and stderr for checker processes
3285
global wnull
3286
wnull = open(os.devnull, "w") # A writable /dev/null
3287
# Only used if server is running in foreground but not in debug
3288
# mode
3289
if debug or not foreground:
3290
wnull.close()
3291
3292
# Get client data and settings from last running state.
3293
if server_settings["restore"]:
3294
try:
3295
with open(stored_state_path, "rb") as stored_state:
3296
if sys.version_info.major == 2:
3297
clients_data, old_client_settings = pickle.load(
3298
stored_state)
3299
else:
3300
bytes_clients_data, bytes_old_client_settings = (
3301
pickle.load(stored_state, encoding="bytes"))
3302
# Fix bytes to strings
3303
# clients_data
3304
# .keys()
3305
clients_data = {(key.decode("utf-8")
3306
if isinstance(key, bytes)
3307
else key): value
3308
for key, value in
3309
bytes_clients_data.items()}
3310
del bytes_clients_data
3311
for key in clients_data:
3312
value = {(k.decode("utf-8")
3313
if isinstance(k, bytes) else k): v
3314
for k, v in
3315
clients_data[key].items()}
3316
clients_data[key] = value
3317
# .client_structure
3318
value["client_structure"] = [
3319
(s.decode("utf-8")
3320
if isinstance(s, bytes)
3321
else s) for s in
3322
value["client_structure"]]
3323
# .name, .host, and .checker_command
3324
for k in ("name", "host", "checker_command"):
3325
if isinstance(value[k], bytes):
3326
value[k] = value[k].decode("utf-8")
3327
if "key_id" not in value:
3328
value["key_id"] = ""
3329
elif "fingerprint" not in value:
3330
value["fingerprint"] = ""
3331
# old_client_settings
3332
# .keys()
3333
old_client_settings = {
3334
(key.decode("utf-8")
3335
if isinstance(key, bytes)
3336
else key): value
3337
for key, value in
3338
bytes_old_client_settings.items()}
3339
del bytes_old_client_settings
3340
# .host and .checker_command
3341
for value in old_client_settings.values():
3342
for attribute in ("host", "checker_command"):
3343
if isinstance(value[attribute], bytes):
3344
value[attribute] = (value[attribute]
3345
.decode("utf-8"))
3346
os.remove(stored_state_path)
3347
except IOError as e:
3348
if e.errno == errno.ENOENT:
3349
log.warning("Could not load persistent state:"
3350
" %s", os.strerror(e.errno))
3351
else:
3352
log.critical("Could not load persistent state:",
3353
exc_info=e)
3354
raise
3355
except EOFError as e:
3356
log.warning("Could not load persistent state: EOFError:",
3357
exc_info=e)
3358
3359
with PGPEngine() as pgp:
3360
for client_name, client in clients_data.items():
3361
# Skip removed clients
3362
if client_name not in client_settings:
3363
continue
3364
3365
# Decide which value to use after restoring saved state.
3366
# We have three different values: Old config file,
3367
# new config file, and saved state.
3368
# New config value takes precedence if it differs from old
3369
# config value, otherwise use saved state.
3370
for name, value in client_settings[client_name].items():
3371
try:
3372
# For each value in new config, check if it
3373
# differs from the old config value (Except for
3374
# the "secret" attribute)
3375
if (name != "secret"
3376
and (value !=
3377
old_client_settings[client_name][name])):
3378
client[name] = value
3379
except KeyError:
3380
pass
3381
3382
# Clients who has passed its expire date can still be
3383
# enabled if its last checker was successful. A Client
3384
# whose checker succeeded before we stored its state is
3385
# assumed to have successfully run all checkers during
3386
# downtime.
3387
if client["enabled"]:
3388
if datetime.datetime.utcnow() >= client["expires"]:
3389
if not client["last_checked_ok"]:
3390
log.warning("disabling client %s - Client"
3391
" never performed a successful"
3392
" checker", client_name)
3393
client["enabled"] = False
3394
elif client["last_checker_status"] != 0:
3395
log.warning("disabling client %s - Client"
3396
" last checker failed with error"
3397
" code %s", client_name,
3398
client["last_checker_status"])
3399
client["enabled"] = False
3400
else:
3401
client["expires"] = (
3402
datetime.datetime.utcnow()
3403
+ client["timeout"])
3404
log.debug("Last checker succeeded, keeping %s"
3405
" enabled", client_name)
3406
try:
3407
client["secret"] = pgp.decrypt(
3408
client["encrypted_secret"],
3409
client_settings[client_name]["secret"])
3410
except PGPError:
3411
# If decryption fails, we use secret from new settings
3412
log.debug("Failed to decrypt %s old secret",
3413
client_name)
3414
client["secret"] = (client_settings[client_name]
3415
["secret"])
3416
3417
# Add/remove clients based on new changes made to config
3418
for client_name in (set(old_client_settings)
3419
- set(client_settings)):
3420
del clients_data[client_name]
3421
for client_name in (set(client_settings)
3422
- set(old_client_settings)):
3423
clients_data[client_name] = client_settings[client_name]
3424
3425
# Create all client objects
3426
for client_name, client in clients_data.items():
3427
tcp_server.clients[client_name] = client_class(
3428
name=client_name,
3429
settings=client,
3430
server_settings=server_settings)
3431
1554
client_class = functools.partial(ClientDBus, bus = bus)
1555
tcp_server.clients.update(set(
1556
client_class(name = section,
1557
config= dict(client_config.items(section)))
1558
for section in client_config.sections()))
3432
1559
if not tcp_server.clients:
3433
log.warning("No clients defined")
3434
3435
if not foreground:
3436
if pidfile is not None:
1560
logger.warning(u"No clients defined")
1561
1562
if debug:
1563
# Redirect stdin so all checkers get /dev/null
1564
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1565
os.dup2(null, sys.stdin.fileno())
1566
if null > 2:
1567
os.close(null)
1568
else:
1569
# No console logging
1570
logger.removeHandler(console)
1571
# Close all input and output, do double fork, etc.
1572
daemon()
1573
1574
try:
1575
with closing(pidfile):
3437
1576
pid = os.getpid()
3438
try:
3439
with pidfile:
3440
print(pid, file=pidfile)
3441
except IOError:
3442
log.error("Could not write to file %r with PID %d",
3443
pidfilename, pid)
1577
pidfile.write(str(pid) + "\n")
3444
1578
del pidfile
3445
del pidfilename
3446
3447
for termsig in (signal.SIGHUP, signal.SIGTERM):
3448
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3449
lambda: main_loop.quit() and False)
3450
1579
except IOError:
1580
logger.error(u"Could not write to file %r with PID %d",
1581
pidfilename, pid)
1582
except NameError:
1583
# "pidfile" was never created
1584
pass
1585
del pidfilename
1586
1587
def cleanup():
1588
"Cleanup function; run on exit"
1589
service.cleanup()
1590
1591
while tcp_server.clients:
1592
client = tcp_server.clients.pop()
1593
client.disable_hook = None
1594
client.disable()
1595
1596
atexit.register(cleanup)
1597
1598
if not debug:
1599
signal.signal(signal.SIGINT, signal.SIG_IGN)
1600
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1601
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1602
3451
1603
if use_dbus:
3452
3453
@alternate_dbus_interfaces(
3454
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3455
class MandosDBusService(DBusObjectWithObjectManager):
1604
class MandosDBusService(dbus.service.Object):
3456
1605
"""A D-Bus proxy object"""
3457
3458
1606
def __init__(self):
3459
dbus.service.Object.__init__(self, bus, "/")
3460
3461
_interface = "se.recompile.Mandos"
3462
3463
@dbus.service.signal(_interface, signature="o")
3464
def ClientAdded(self, objpath):
3465
"D-Bus signal"
3466
pass
3467
3468
@dbus.service.signal(_interface, signature="ss")
3469
def ClientNotFound(self, key_id, address):
3470
"D-Bus signal"
3471
pass
3472
3473
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3474
"true"})
3475
@dbus.service.signal(_interface, signature="os")
1607
dbus.service.Object.__init__(self, bus, u"/")
1608
_interface = u"se.bsnet.fukt.Mandos"
1609
1610
@dbus.service.signal(_interface, signature=u"oa{sv}")
1611
def ClientAdded(self, objpath, properties):
1612
"D-Bus signal"
1613
pass
1614
1615
@dbus.service.signal(_interface, signature=u"s")
1616
def ClientNotFound(self, fingerprint):
1617
"D-Bus signal"
1618
pass
1619
1620
@dbus.service.signal(_interface, signature=u"os")
3476
1621
def ClientRemoved(self, objpath, name):
3477
1622
"D-Bus signal"
3478
1623
pass
3479
3480
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3481
"true"})
3482
@dbus.service.method(_interface, out_signature="ao")
1624
1625
@dbus.service.method(_interface, out_signature=u"ao")
3483
1626
def GetAllClients(self):
3484
1627
"D-Bus method"
3485
return dbus.Array(c.dbus_object_path for c in
3486
tcp_server.clients.values())
3487
3488
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3489
"true"})
1628
return dbus.Array(c.dbus_object_path
1629
for c in tcp_server.clients)
1630
3490
1631
@dbus.service.method(_interface,
3491
out_signature="a{oa{sv}}")
1632
out_signature=u"a{oa{sv}}")
3492
1633
def GetAllClientsWithProperties(self):
3493
1634
"D-Bus method"
3494
1635
return dbus.Dictionary(
3495
{c.dbus_object_path: c.GetAll(
3496
"se.recompile.Mandos.Client")
3497
for c in tcp_server.clients.values()},
3498
signature="oa{sv}")
3499
3500
@dbus.service.method(_interface, in_signature="o")
1636
((c.dbus_object_path, c.GetAll(u""))
1637
for c in tcp_server.clients),
1638
signature=u"oa{sv}")
1639
1640
@dbus.service.method(_interface, in_signature=u"o")
3501
1641
def RemoveClient(self, object_path):
3502
1642
"D-Bus method"
3503
for c in tcp_server.clients.values():
1643
for c in tcp_server.clients:
3504
1644
if c.dbus_object_path == object_path:
3505
del tcp_server.clients[c.name]
1645
tcp_server.clients.remove(c)
3506
1646
c.remove_from_connection()
3507
# Don't signal the disabling
3508
c.disable(quiet=True)
3509
# Emit D-Bus signal for removal
3510
self.client_removed_signal(c)
1647
# Don't signal anything except ClientRemoved
1648
c.disable(signal=False)
1649
# Emit D-Bus signal
1650
self.ClientRemoved(object_path, c.name)
3511
1651
return
3512
raise KeyError(object_path)
3513
1652
raise KeyError
1653
3514
1654
del _interface
3515
3516
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3517
out_signature="a{oa{sa{sv}}}")
3518
def GetManagedObjects(self):
3519
"""D-Bus method"""
3520
return dbus.Dictionary(
3521
{client.dbus_object_path:
3522
dbus.Dictionary(
3523
{interface: client.GetAll(interface)
3524
for interface in
3525
client._get_all_interface_names()})
3526
for client in tcp_server.clients.values()})
3527
3528
def client_added_signal(self, client):
3529
"""Send the new standard signal and the old signal"""
3530
if use_dbus:
3531
# New standard signal
3532
self.InterfacesAdded(
3533
client.dbus_object_path,
3534
dbus.Dictionary(
3535
{interface: client.GetAll(interface)
3536
for interface in
3537
client._get_all_interface_names()}))
3538
# Old signal
3539
self.ClientAdded(client.dbus_object_path)
3540
3541
def client_removed_signal(self, client):
3542
"""Send the new standard signal and the old signal"""
3543
if use_dbus:
3544
# New standard signal
3545
self.InterfacesRemoved(
3546
client.dbus_object_path,
3547
client._get_all_interface_names())
3548
# Old signal
3549
self.ClientRemoved(client.dbus_object_path,
3550
client.name)
3551
1655
3552
1656
mandos_dbus_service = MandosDBusService()
3553
3554
# Save modules to variables to exempt the modules from being
3555
# unloaded before the function registered with atexit() is run.
3556
mp = multiprocessing
3557
wn = wnull
3558
3559
def cleanup():
3560
"Cleanup function; run on exit"
3561
if zeroconf:
3562
service.cleanup()
3563
3564
mp.active_children()
3565
wn.close()
3566
if not (tcp_server.clients or client_settings):
3567
return
3568
3569
# Store client before exiting. Secrets are encrypted with key
3570
# based on what config file has. If config file is
3571
# removed/edited, old secret will thus be unrecovable.
3572
clients = {}
3573
with PGPEngine() as pgp:
3574
for client in tcp_server.clients.values():
3575
key = client_settings[client.name]["secret"]
3576
client.encrypted_secret = pgp.encrypt(client.secret,
3577
key)
3578
client_dict = {}
3579
3580
# A list of attributes that can not be pickled
3581
# + secret.
3582
exclude = {"bus", "changedstate", "secret",
3583
"checker", "server_settings"}
3584
for name, typ in inspect.getmembers(dbus.service
3585
.Object):
3586
exclude.add(name)
3587
3588
client_dict["encrypted_secret"] = (client
3589
.encrypted_secret)
3590
for attr in client.client_structure:
3591
if attr not in exclude:
3592
client_dict[attr] = getattr(client, attr)
3593
3594
clients[client.name] = client_dict
3595
del client_settings[client.name]["secret"]
3596
3597
try:
3598
with tempfile.NamedTemporaryFile(
3599
mode="wb",
3600
suffix=".pickle",
3601
prefix="clients-",
3602
dir=os.path.dirname(stored_state_path),
3603
delete=False) as stored_state:
3604
pickle.dump((clients, client_settings), stored_state,
3605
protocol=2)
3606
tempname = stored_state.name
3607
os.rename(tempname, stored_state_path)
3608
except (IOError, OSError) as e:
3609
if not debug:
3610
try:
3611
os.remove(tempname)
3612
except NameError:
3613
pass
3614
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3615
log.warning("Could not save persistent state: %s",
3616
os.strerror(e.errno))
3617
else:
3618
log.warning("Could not save persistent state:",
3619
exc_info=e)
3620
raise
3621
3622
# Delete all clients, and settings from config
3623
while tcp_server.clients:
3624
name, client = tcp_server.clients.popitem()
3625
if use_dbus:
3626
client.remove_from_connection()
3627
# Don't signal the disabling
3628
client.disable(quiet=True)
3629
# Emit D-Bus signal for removal
3630
if use_dbus:
3631
mandos_dbus_service.client_removed_signal(client)
3632
client_settings.clear()
3633
3634
atexit.register(cleanup)
3635
3636
for client in tcp_server.clients.values():
1657
1658
for client in tcp_server.clients:
3637
1659
if use_dbus:
3638
# Emit D-Bus signal for adding
3639
mandos_dbus_service.client_added_signal(client)
3640
# Need to initiate checking of clients
3641
if client.enabled:
3642
client.init_checker(randomize_start=True)
3643
1660
# Emit D-Bus signal
1661
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1662
client.GetAll(u""))
1663
client.enable()
1664
3644
1665
tcp_server.enable()
3645
1666
tcp_server.server_activate()
3646
1667
3647
1668
# Find out what port we got
3648
if zeroconf:
3649
service.port = tcp_server.socket.getsockname()[1]
1669
service.port = tcp_server.socket.getsockname()[1]
3650
1670
if use_ipv6:
3651
log.info("Now listening on address %r, port %d, flowinfo %d,"
3652
" scope_id %d", *tcp_server.socket.getsockname())
1671
logger.info(u"Now listening on address %r, port %d,"
1672
" flowinfo %d, scope_id %d"
1673
% tcp_server.socket.getsockname())
3653
1674
else: # IPv4
3654
log.info("Now listening on address %r, port %d",
3655
*tcp_server.socket.getsockname())
3656
3657
# service.interface = tcp_server.socket.getsockname()[3]
3658
1675
logger.info(u"Now listening on address %r, port %d"
1676
% tcp_server.socket.getsockname())
1677
1678
#service.interface = tcp_server.socket.getsockname()[3]
1679
3659
1680
try:
3660
if zeroconf:
3661
# From the Avahi example code
3662
try:
3663
service.activate()
3664
except dbus.exceptions.DBusException as error:
3665
log.critical("D-Bus Exception", exc_info=error)
3666
cleanup()
3667
sys.exit(1)
3668
# End of Avahi example code
3669
3670
GLib.io_add_watch(
3671
GLib.IOChannel.unix_new(tcp_server.fileno()),
3672
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3673
lambda *args, **kwargs: (tcp_server.handle_request
3674
(*args[2:], **kwargs) or True))
3675
3676
log.debug("Starting main loop")
1681
# From the Avahi example code
1682
try:
1683
service.activate()
1684
except dbus.exceptions.DBusException, error:
1685
logger.critical(u"DBusException: %s", error)
1686
sys.exit(1)
1687
# End of Avahi example code
1688
1689
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1690
lambda *args, **kwargs:
1691
(tcp_server.handle_request
1692
(*args[2:], **kwargs) or True))
1693
1694
logger.debug(u"Starting main loop")
3677
1695
main_loop.run()
3678
except AvahiError as error:
3679
log.critical("Avahi Error", exc_info=error)
3680
cleanup()
1696
except AvahiError, error:
1697
logger.critical(u"AvahiError: %s", error)
3681
1698
sys.exit(1)
3682
1699
except KeyboardInterrupt:
3683
1700
if debug:
3684
print("", file=sys.stderr)
3685
log.debug("Server received KeyboardInterrupt")
3686
log.debug("Server exiting")
3687
# Must run before the D-Bus bus name gets deregistered
3688
cleanup()
3689
3690
3691
def parse_test_args():
3692
# type: () -> argparse.Namespace
3693
parser = argparse.ArgumentParser(add_help=False)
3694
parser.add_argument("--check", action="store_true")
3695
parser.add_argument("--prefix", )
3696
args, unknown_args = parser.parse_known_args()
3697
if args.check:
3698
# Remove test options from sys.argv
3699
sys.argv[1:] = unknown_args
3700
return args
3701
3702
# Add all tests from doctest strings
3703
def load_tests(loader, tests, none):
3704
import doctest
3705
tests.addTests(doctest.DocTestSuite())
3706
return tests
3707
3708
if __name__ == "__main__":
3709
options = parse_test_args()
3710
try:
3711
if options.check:
3712
extra_test_prefix = options.prefix
3713
if extra_test_prefix is not None:
3714
if not (unittest.main(argv=[""], exit=False)
3715
.result.wasSuccessful()):
3716
sys.exit(1)
3717
class ExtraTestLoader(unittest.TestLoader):
3718
testMethodPrefix = extra_test_prefix
3719
# Call using ./scriptname --test [--verbose]
3720
unittest.main(argv=[""], testLoader=ExtraTestLoader())
3721
else:
3722
unittest.main(argv=[""])
3723
else:
3724
main()
3725
finally:
3726
logging.shutdown()
3727
3728
# Local Variables:
3729
# run-tests:
3730
# (lambda (&optional extra)
3731
# (if (not (funcall run-tests-in-test-buffer default-directory
3732
# extra))
3733
# (funcall show-test-buffer-in-test-window)
3734
# (funcall remove-test-window)
3735
# (if extra (message "Extra tests run successfully!"))))
3736
# run-tests-in-test-buffer:
3737
# (lambda (dir &optional extra)
3738
# (with-current-buffer (get-buffer-create "*Test*")
3739
# (setq buffer-read-only nil
3740
# default-directory dir)
3741
# (erase-buffer)
3742
# (compilation-mode))
3743
# (let ((process-result
3744
# (let ((inhibit-read-only t))
3745
# (process-file-shell-command
3746
# (funcall get-command-line extra) nil "*Test*"))))
3747
# (and (numberp process-result)
3748
# (= process-result 0))))
3749
# get-command-line:
3750
# (lambda (&optional extra)
3751
# (let ((quoted-script
3752
# (shell-quote-argument (funcall get-script-name))))
3753
# (format
3754
# (concat "%s --check" (if extra " --prefix=atest" ""))
3755
# quoted-script)))
3756
# get-script-name:
3757
# (lambda ()
3758
# (if (fboundp 'file-local-name)
3759
# (file-local-name (buffer-file-name))
3760
# (or (file-remote-p (buffer-file-name) 'localname)
3761
# (buffer-file-name))))
3762
# remove-test-window:
3763
# (lambda ()
3764
# (let ((test-window (get-buffer-window "*Test*")))
3765
# (if test-window (delete-window test-window))))
3766
# show-test-buffer-in-test-window:
3767
# (lambda ()
3768
# (when (not (get-buffer-window-list "*Test*"))
3769
# (setq next-error-last-buffer (get-buffer "*Test*"))
3770
# (let* ((side (if (>= (window-width) 146) 'right 'bottom))
3771
# (display-buffer-overriding-action
3772
# `((display-buffer-in-side-window) (side . ,side)
3773
# (window-height . fit-window-to-buffer)
3774
# (window-width . fit-window-to-buffer))))
3775
# (display-buffer "*Test*"))))
3776
# eval:
3777
# (progn
3778
# (let* ((run-extra-tests (lambda () (interactive)
3779
# (funcall run-tests t)))
3780
# (inner-keymap `(keymap (116 . ,run-extra-tests))) ; t
3781
# (outer-keymap `(keymap (3 . ,inner-keymap)))) ; C-c
3782
# (setq minor-mode-overriding-map-alist
3783
# (cons `(run-tests . ,outer-keymap)
3784
# minor-mode-overriding-map-alist)))
3785
# (add-hook 'after-save-hook run-tests 90 t))
3786
# End:
1701
print >> sys.stderr
1702
logger.debug(u"Server received KeyboardInterrupt")
1703
logger.debug(u"Server exiting")
1704
1705
if __name__ == '__main__':
1706
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0