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- Committer: Teddy Hogeborn
- Date: 2019-09-03 19:06:41 UTC
- mto: This revision was merged to the branch mainline in revision 1177.
- Revision ID: teddy@recompile.se-20190903190641-htj45p0ccvhh0nv3
Tags: version-1.8.9-1
* Makefile (version): Change to 1.8.9.
* NEWS (Version 1.8.9): Add new entry.
* debian/changelog (1.8.9-1): - '' -
* NEWS (Version 1.8.9): Add new entry.
* debian/changelog (1.8.9-1): - '' -
- files added:
- bugs.xml
- debian/source
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
1
#!/usr/bin/python3 -b
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); 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 © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
#
33
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
32
# Contact the authors at <mandos@recompile.se>.
33
#
34
35
from __future__ import (division, absolute_import, print_function,
36
unicode_literals)
37
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
37
47
import socket
38
import optparse
48
import argparse
39
49
import datetime
40
50
import errno
41
import gnutls.crypto
42
import gnutls.connection
43
import gnutls.errors
44
import gnutls.library.functions
45
import gnutls.library.constants
46
import gnutls.library.types
47
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
48
55
import sys
49
56
import re
50
57
import os
59
66
import struct
60
67
import fcntl
61
68
import functools
62
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
73
import multiprocessing
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
64
81
65
82
import dbus
66
83
import dbus.service
67
import gobject
68
import avahi
84
import gi
85
from gi.repository import GLib
69
86
from dbus.mainloop.glib import DBusGMainLoop
70
87
import ctypes
71
88
import ctypes.util
72
89
import xml.dom.minidom
73
90
import inspect
74
91
92
if sys.version_info.major == 2:
93
__metaclass__ = type
94
95
# Show warnings by default
96
if not sys.warnoptions:
97
import warnings
98
warnings.simplefilter("default")
99
100
# Try to find the value of SO_BINDTODEVICE:
75
101
try:
102
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
103
# newer, and it is also the most natural place for it:
76
104
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
77
105
except AttributeError:
78
106
try:
107
# This is where SO_BINDTODEVICE was up to and including Python
108
# 2.6, and also 3.2:
79
109
from IN import SO_BINDTODEVICE
80
110
except ImportError:
81
SO_BINDTODEVICE = None
82
83
84
version = "1.0.14"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
88
syslogger = (logging.handlers.SysLogHandler
89
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
94
logger.addHandler(syslogger)
95
96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
100
logger.addHandler(console)
111
# In Python 2.7 it seems to have been removed entirely.
112
# Try running the C preprocessor:
113
try:
114
cc = subprocess.Popen(["cc", "--language=c", "-E",
115
"/dev/stdin"],
116
stdin=subprocess.PIPE,
117
stdout=subprocess.PIPE)
118
stdout = cc.communicate(
119
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
120
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
121
except (OSError, ValueError, IndexError):
122
# No value found
123
SO_BINDTODEVICE = None
124
125
if sys.version_info.major == 2:
126
str = unicode
127
128
if sys.version_info < (3, 2):
129
configparser.Configparser = configparser.SafeConfigParser
130
131
version = "1.8.9"
132
stored_state_file = "clients.pickle"
133
134
logger = logging.getLogger()
135
logging.captureWarnings(True) # Show warnings via the logging system
136
syslogger = None
137
138
try:
139
if_nametoindex = ctypes.cdll.LoadLibrary(
140
ctypes.util.find_library("c")).if_nametoindex
141
except (OSError, AttributeError):
142
143
def if_nametoindex(interface):
144
"Get an interface index the hard way, i.e. using fcntl()"
145
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
146
with contextlib.closing(socket.socket()) as s:
147
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
148
struct.pack(b"16s16x", interface))
149
interface_index = struct.unpack("I", ifreq[16:20])[0]
150
return interface_index
151
152
153
def copy_function(func):
154
"""Make a copy of a function"""
155
if sys.version_info.major == 2:
156
return types.FunctionType(func.func_code,
157
func.func_globals,
158
func.func_name,
159
func.func_defaults,
160
func.func_closure)
161
else:
162
return types.FunctionType(func.__code__,
163
func.__globals__,
164
func.__name__,
165
func.__defaults__,
166
func.__closure__)
167
168
169
def initlogger(debug, level=logging.WARNING):
170
"""init logger and add loglevel"""
171
172
global syslogger
173
syslogger = (logging.handlers.SysLogHandler(
174
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
175
address="/dev/log"))
176
syslogger.setFormatter(logging.Formatter
177
('Mandos [%(process)d]: %(levelname)s:'
178
' %(message)s'))
179
logger.addHandler(syslogger)
180
181
if debug:
182
console = logging.StreamHandler()
183
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
184
' [%(process)d]:'
185
' %(levelname)s:'
186
' %(message)s'))
187
logger.addHandler(console)
188
logger.setLevel(level)
189
190
191
class PGPError(Exception):
192
"""Exception if encryption/decryption fails"""
193
pass
194
195
196
class PGPEngine:
197
"""A simple class for OpenPGP symmetric encryption & decryption"""
198
199
def __init__(self):
200
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
201
self.gpg = "gpg"
202
try:
203
output = subprocess.check_output(["gpgconf"])
204
for line in output.splitlines():
205
name, text, path = line.split(b":")
206
if name == b"gpg":
207
self.gpg = path
208
break
209
except OSError as e:
210
if e.errno != errno.ENOENT:
211
raise
212
self.gnupgargs = ['--batch',
213
'--homedir', self.tempdir,
214
'--force-mdc',
215
'--quiet']
216
# Only GPG version 1 has the --no-use-agent option.
217
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
218
self.gnupgargs.append("--no-use-agent")
219
220
def __enter__(self):
221
return self
222
223
def __exit__(self, exc_type, exc_value, traceback):
224
self._cleanup()
225
return False
226
227
def __del__(self):
228
self._cleanup()
229
230
def _cleanup(self):
231
if self.tempdir is not None:
232
# Delete contents of tempdir
233
for root, dirs, files in os.walk(self.tempdir,
234
topdown=False):
235
for filename in files:
236
os.remove(os.path.join(root, filename))
237
for dirname in dirs:
238
os.rmdir(os.path.join(root, dirname))
239
# Remove tempdir
240
os.rmdir(self.tempdir)
241
self.tempdir = None
242
243
def password_encode(self, password):
244
# Passphrase can not be empty and can not contain newlines or
245
# NUL bytes. So we prefix it and hex encode it.
246
encoded = b"mandos" + binascii.hexlify(password)
247
if len(encoded) > 2048:
248
# GnuPG can't handle long passwords, so encode differently
249
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
250
.replace(b"\n", b"\\n")
251
.replace(b"\0", b"\\x00"))
252
return encoded
253
254
def encrypt(self, data, password):
255
passphrase = self.password_encode(password)
256
with tempfile.NamedTemporaryFile(
257
dir=self.tempdir) as passfile:
258
passfile.write(passphrase)
259
passfile.flush()
260
proc = subprocess.Popen([self.gpg, '--symmetric',
261
'--passphrase-file',
262
passfile.name]
263
+ self.gnupgargs,
264
stdin=subprocess.PIPE,
265
stdout=subprocess.PIPE,
266
stderr=subprocess.PIPE)
267
ciphertext, err = proc.communicate(input=data)
268
if proc.returncode != 0:
269
raise PGPError(err)
270
return ciphertext
271
272
def decrypt(self, data, password):
273
passphrase = self.password_encode(password)
274
with tempfile.NamedTemporaryFile(
275
dir=self.tempdir) as passfile:
276
passfile.write(passphrase)
277
passfile.flush()
278
proc = subprocess.Popen([self.gpg, '--decrypt',
279
'--passphrase-file',
280
passfile.name]
281
+ self.gnupgargs,
282
stdin=subprocess.PIPE,
283
stdout=subprocess.PIPE,
284
stderr=subprocess.PIPE)
285
decrypted_plaintext, err = proc.communicate(input=data)
286
if proc.returncode != 0:
287
raise PGPError(err)
288
return decrypted_plaintext
289
290
291
# Pretend that we have an Avahi module
292
class avahi:
293
"""This isn't so much a class as it is a module-like namespace."""
294
IF_UNSPEC = -1 # avahi-common/address.h
295
PROTO_UNSPEC = -1 # avahi-common/address.h
296
PROTO_INET = 0 # avahi-common/address.h
297
PROTO_INET6 = 1 # avahi-common/address.h
298
DBUS_NAME = "org.freedesktop.Avahi"
299
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
300
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
301
DBUS_PATH_SERVER = "/"
302
303
@staticmethod
304
def string_array_to_txt_array(t):
305
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
306
for s in t), signature="ay")
307
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
308
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
309
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
310
SERVER_INVALID = 0 # avahi-common/defs.h
311
SERVER_REGISTERING = 1 # avahi-common/defs.h
312
SERVER_RUNNING = 2 # avahi-common/defs.h
313
SERVER_COLLISION = 3 # avahi-common/defs.h
314
SERVER_FAILURE = 4 # avahi-common/defs.h
315
101
316
102
317
class AvahiError(Exception):
103
318
def __init__(self, value, *args, **kwargs):
104
319
self.value = value
105
super(AvahiError, self).__init__(value, *args, **kwargs)
106
def __unicode__(self):
107
return unicode(repr(self.value))
320
return super(AvahiError, self).__init__(value, *args,
321
**kwargs)
322
108
323
109
324
class AvahiServiceError(AvahiError):
110
325
pass
111
326
327
112
328
class AvahiGroupError(AvahiError):
113
329
pass
114
330
115
331
116
class AvahiService(object):
332
class AvahiService:
117
333
"""An Avahi (Zeroconf) service.
118
334
119
335
Attributes:
120
336
interface: integer; avahi.IF_UNSPEC or an interface index.
121
337
Used to optionally bind to the specified interface.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
124
See <http://www.dns-sd.org/ServiceTypes.html>
338
name: string; Example: 'Mandos'
339
type: string; Example: '_mandos._tcp'.
340
See <https://www.iana.org/assignments/service-names-port-numbers>
125
341
port: integer; what port to announce
126
342
TXT: list of strings; TXT record for the service
127
343
domain: string; Domain to publish on, default to .local if empty.
133
349
server: D-Bus Server
134
350
bus: dbus.SystemBus()
135
351
"""
136
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
139
protocol = avahi.PROTO_UNSPEC, bus = None):
352
353
def __init__(self,
354
interface=avahi.IF_UNSPEC,
355
name=None,
356
servicetype=None,
357
port=None,
358
TXT=None,
359
domain="",
360
host="",
361
max_renames=32768,
362
protocol=avahi.PROTO_UNSPEC,
363
bus=None):
140
364
self.interface = interface
141
365
self.name = name
142
366
self.type = servicetype
150
374
self.group = None # our entry group
151
375
self.server = None
152
376
self.bus = bus
153
def rename(self):
377
self.entry_group_state_changed_match = None
378
379
def rename(self, remove=True):
154
380
"""Derived from the Avahi example code"""
155
381
if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
382
logger.critical("No suitable Zeroconf service name found"
383
" after %i retries, exiting.",
158
384
self.rename_count)
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
385
raise AvahiServiceError("Too many renames")
386
self.name = str(
387
self.server.GetAlternativeServiceName(self.name))
388
self.rename_count += 1
389
logger.info("Changing Zeroconf service name to %r ...",
162
390
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
self.remove()
391
if remove:
392
self.remove()
168
393
try:
169
394
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
172
self.cleanup()
173
os._exit(1)
174
self.rename_count += 1
395
except dbus.exceptions.DBusException as error:
396
if (error.get_dbus_name()
397
== "org.freedesktop.Avahi.CollisionError"):
398
logger.info("Local Zeroconf service name collision.")
399
return self.rename(remove=False)
400
else:
401
logger.critical("D-Bus Exception", exc_info=error)
402
self.cleanup()
403
os._exit(1)
404
175
405
def remove(self):
176
406
"""Derived from the Avahi example code"""
407
if self.entry_group_state_changed_match is not None:
408
self.entry_group_state_changed_match.remove()
409
self.entry_group_state_changed_match = None
177
410
if self.group is not None:
178
411
self.group.Reset()
412
179
413
def add(self):
180
414
"""Derived from the Avahi example code"""
415
self.remove()
181
416
if self.group is None:
182
417
self.group = dbus.Interface(
183
418
self.bus.get_object(avahi.DBUS_NAME,
184
419
self.server.EntryGroupNew()),
185
420
avahi.DBUS_INTERFACE_ENTRY_GROUP)
186
self.group.connect_to_signal('StateChanged',
187
self
188
.entry_group_state_changed)
189
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
421
self.entry_group_state_changed_match = (
422
self.group.connect_to_signal(
423
'StateChanged', self.entry_group_state_changed))
424
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
190
425
self.name, self.type)
191
426
self.group.AddService(
192
427
self.interface,
197
432
dbus.UInt16(self.port),
198
433
avahi.string_array_to_txt_array(self.TXT))
199
434
self.group.Commit()
435
200
436
def entry_group_state_changed(self, state, error):
201
437
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
203
438
logger.debug("Avahi entry group state change: %i", state)
439
204
440
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
441
logger.debug("Zeroconf service established.")
206
442
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
443
logger.info("Zeroconf service name collision.")
208
444
self.rename()
209
445
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
211
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
213
% unicode(error))
446
logger.critical("Avahi: Error in group state changed %s",
447
str(error))
448
raise AvahiGroupError("State changed: {!s}".format(error))
449
214
450
def cleanup(self):
215
451
"""Derived from the Avahi example code"""
216
452
if self.group is not None:
217
self.group.Free()
453
try:
454
self.group.Free()
455
except (dbus.exceptions.UnknownMethodException,
456
dbus.exceptions.DBusException):
457
pass
218
458
self.group = None
219
def server_state_changed(self, state):
459
self.remove()
460
461
def server_state_changed(self, state, error=None):
220
462
"""Derived from the Avahi example code"""
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
224
self.remove()
463
logger.debug("Avahi server state change: %i", state)
464
bad_states = {
465
avahi.SERVER_INVALID: "Zeroconf server invalid",
466
avahi.SERVER_REGISTERING: None,
467
avahi.SERVER_COLLISION: "Zeroconf server name collision",
468
avahi.SERVER_FAILURE: "Zeroconf server failure",
469
}
470
if state in bad_states:
471
if bad_states[state] is not None:
472
if error is None:
473
logger.error(bad_states[state])
474
else:
475
logger.error(bad_states[state] + ": %r", error)
476
self.cleanup()
225
477
elif state == avahi.SERVER_RUNNING:
226
self.add()
478
try:
479
self.add()
480
except dbus.exceptions.DBusException as error:
481
if (error.get_dbus_name()
482
== "org.freedesktop.Avahi.CollisionError"):
483
logger.info("Local Zeroconf service name"
484
" collision.")
485
return self.rename(remove=False)
486
else:
487
logger.critical("D-Bus Exception", exc_info=error)
488
self.cleanup()
489
os._exit(1)
490
else:
491
if error is None:
492
logger.debug("Unknown state: %r", state)
493
else:
494
logger.debug("Unknown state: %r: %r", state, error)
495
227
496
def activate(self):
228
497
"""Derived from the Avahi example code"""
229
498
if self.server is None:
230
499
self.server = dbus.Interface(
231
500
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
501
avahi.DBUS_PATH_SERVER,
502
follow_name_owner_changes=True),
233
503
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
235
self.server_state_changed)
504
self.server.connect_to_signal("StateChanged",
505
self.server_state_changed)
236
506
self.server_state_changed(self.server.GetState())
237
507
238
508
239
class Client(object):
509
class AvahiServiceToSyslog(AvahiService):
510
def rename(self, *args, **kwargs):
511
"""Add the new name to the syslog messages"""
512
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
513
syslogger.setFormatter(logging.Formatter(
514
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
515
.format(self.name)))
516
return ret
517
518
519
# Pretend that we have a GnuTLS module
520
class gnutls:
521
"""This isn't so much a class as it is a module-like namespace."""
522
523
library = ctypes.util.find_library("gnutls")
524
if library is None:
525
library = ctypes.util.find_library("gnutls-deb0")
526
_library = ctypes.cdll.LoadLibrary(library)
527
del library
528
529
# Unless otherwise indicated, the constants and types below are
530
# all from the gnutls/gnutls.h C header file.
531
532
# Constants
533
E_SUCCESS = 0
534
E_INTERRUPTED = -52
535
E_AGAIN = -28
536
CRT_OPENPGP = 2
537
CRT_RAWPK = 3
538
CLIENT = 2
539
SHUT_RDWR = 0
540
CRD_CERTIFICATE = 1
541
E_NO_CERTIFICATE_FOUND = -49
542
X509_FMT_DER = 0
543
NO_TICKETS = 1<<10
544
ENABLE_RAWPK = 1<<18
545
CTYPE_PEERS = 3
546
KEYID_USE_SHA256 = 1 # gnutls/x509.h
547
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
548
549
# Types
550
class session_int(ctypes.Structure):
551
_fields_ = []
552
session_t = ctypes.POINTER(session_int)
553
554
class certificate_credentials_st(ctypes.Structure):
555
_fields_ = []
556
certificate_credentials_t = ctypes.POINTER(
557
certificate_credentials_st)
558
certificate_type_t = ctypes.c_int
559
560
class datum_t(ctypes.Structure):
561
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
562
('size', ctypes.c_uint)]
563
564
class openpgp_crt_int(ctypes.Structure):
565
_fields_ = []
566
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
567
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
568
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
569
credentials_type_t = ctypes.c_int
570
transport_ptr_t = ctypes.c_void_p
571
close_request_t = ctypes.c_int
572
573
# Exceptions
574
class Error(Exception):
575
def __init__(self, message=None, code=None, args=()):
576
# Default usage is by a message string, but if a return
577
# code is passed, convert it to a string with
578
# gnutls.strerror()
579
self.code = code
580
if message is None and code is not None:
581
message = gnutls.strerror(code)
582
return super(gnutls.Error, self).__init__(
583
message, *args)
584
585
class CertificateSecurityError(Error):
586
pass
587
588
# Classes
589
class Credentials:
590
def __init__(self):
591
self._c_object = gnutls.certificate_credentials_t()
592
gnutls.certificate_allocate_credentials(
593
ctypes.byref(self._c_object))
594
self.type = gnutls.CRD_CERTIFICATE
595
596
def __del__(self):
597
gnutls.certificate_free_credentials(self._c_object)
598
599
class ClientSession:
600
def __init__(self, socket, credentials=None):
601
self._c_object = gnutls.session_t()
602
gnutls_flags = gnutls.CLIENT
603
if gnutls.check_version(b"3.5.6"):
604
gnutls_flags |= gnutls.NO_TICKETS
605
if gnutls.has_rawpk:
606
gnutls_flags |= gnutls.ENABLE_RAWPK
607
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
608
del gnutls_flags
609
gnutls.set_default_priority(self._c_object)
610
gnutls.transport_set_ptr(self._c_object, socket.fileno())
611
gnutls.handshake_set_private_extensions(self._c_object,
612
True)
613
self.socket = socket
614
if credentials is None:
615
credentials = gnutls.Credentials()
616
gnutls.credentials_set(self._c_object, credentials.type,
617
ctypes.cast(credentials._c_object,
618
ctypes.c_void_p))
619
self.credentials = credentials
620
621
def __del__(self):
622
gnutls.deinit(self._c_object)
623
624
def handshake(self):
625
return gnutls.handshake(self._c_object)
626
627
def send(self, data):
628
data = bytes(data)
629
data_len = len(data)
630
while data_len > 0:
631
data_len -= gnutls.record_send(self._c_object,
632
data[-data_len:],
633
data_len)
634
635
def bye(self):
636
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
637
638
# Error handling functions
639
def _error_code(result):
640
"""A function to raise exceptions on errors, suitable
641
for the 'restype' attribute on ctypes functions"""
642
if result >= 0:
643
return result
644
if result == gnutls.E_NO_CERTIFICATE_FOUND:
645
raise gnutls.CertificateSecurityError(code=result)
646
raise gnutls.Error(code=result)
647
648
def _retry_on_error(result, func, arguments):
649
"""A function to retry on some errors, suitable
650
for the 'errcheck' attribute on ctypes functions"""
651
while result < 0:
652
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
653
return _error_code(result)
654
result = func(*arguments)
655
return result
656
657
# Unless otherwise indicated, the function declarations below are
658
# all from the gnutls/gnutls.h C header file.
659
660
# Functions
661
priority_set_direct = _library.gnutls_priority_set_direct
662
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
663
ctypes.POINTER(ctypes.c_char_p)]
664
priority_set_direct.restype = _error_code
665
666
init = _library.gnutls_init
667
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
668
init.restype = _error_code
669
670
set_default_priority = _library.gnutls_set_default_priority
671
set_default_priority.argtypes = [session_t]
672
set_default_priority.restype = _error_code
673
674
record_send = _library.gnutls_record_send
675
record_send.argtypes = [session_t, ctypes.c_void_p,
676
ctypes.c_size_t]
677
record_send.restype = ctypes.c_ssize_t
678
record_send.errcheck = _retry_on_error
679
680
certificate_allocate_credentials = (
681
_library.gnutls_certificate_allocate_credentials)
682
certificate_allocate_credentials.argtypes = [
683
ctypes.POINTER(certificate_credentials_t)]
684
certificate_allocate_credentials.restype = _error_code
685
686
certificate_free_credentials = (
687
_library.gnutls_certificate_free_credentials)
688
certificate_free_credentials.argtypes = [
689
certificate_credentials_t]
690
certificate_free_credentials.restype = None
691
692
handshake_set_private_extensions = (
693
_library.gnutls_handshake_set_private_extensions)
694
handshake_set_private_extensions.argtypes = [session_t,
695
ctypes.c_int]
696
handshake_set_private_extensions.restype = None
697
698
credentials_set = _library.gnutls_credentials_set
699
credentials_set.argtypes = [session_t, credentials_type_t,
700
ctypes.c_void_p]
701
credentials_set.restype = _error_code
702
703
strerror = _library.gnutls_strerror
704
strerror.argtypes = [ctypes.c_int]
705
strerror.restype = ctypes.c_char_p
706
707
certificate_type_get = _library.gnutls_certificate_type_get
708
certificate_type_get.argtypes = [session_t]
709
certificate_type_get.restype = _error_code
710
711
certificate_get_peers = _library.gnutls_certificate_get_peers
712
certificate_get_peers.argtypes = [session_t,
713
ctypes.POINTER(ctypes.c_uint)]
714
certificate_get_peers.restype = ctypes.POINTER(datum_t)
715
716
global_set_log_level = _library.gnutls_global_set_log_level
717
global_set_log_level.argtypes = [ctypes.c_int]
718
global_set_log_level.restype = None
719
720
global_set_log_function = _library.gnutls_global_set_log_function
721
global_set_log_function.argtypes = [log_func]
722
global_set_log_function.restype = None
723
724
deinit = _library.gnutls_deinit
725
deinit.argtypes = [session_t]
726
deinit.restype = None
727
728
handshake = _library.gnutls_handshake
729
handshake.argtypes = [session_t]
730
handshake.restype = _error_code
731
handshake.errcheck = _retry_on_error
732
733
transport_set_ptr = _library.gnutls_transport_set_ptr
734
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
735
transport_set_ptr.restype = None
736
737
bye = _library.gnutls_bye
738
bye.argtypes = [session_t, close_request_t]
739
bye.restype = _error_code
740
bye.errcheck = _retry_on_error
741
742
check_version = _library.gnutls_check_version
743
check_version.argtypes = [ctypes.c_char_p]
744
check_version.restype = ctypes.c_char_p
745
746
_need_version = b"3.3.0"
747
if check_version(_need_version) is None:
748
raise self.Error("Needs GnuTLS {} or later"
749
.format(_need_version))
750
751
_tls_rawpk_version = b"3.6.6"
752
has_rawpk = bool(check_version(_tls_rawpk_version))
753
754
if has_rawpk:
755
# Types
756
class pubkey_st(ctypes.Structure):
757
_fields = []
758
pubkey_t = ctypes.POINTER(pubkey_st)
759
760
x509_crt_fmt_t = ctypes.c_int
761
762
# All the function declarations below are from gnutls/abstract.h
763
pubkey_init = _library.gnutls_pubkey_init
764
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
765
pubkey_init.restype = _error_code
766
767
pubkey_import = _library.gnutls_pubkey_import
768
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
769
x509_crt_fmt_t]
770
pubkey_import.restype = _error_code
771
772
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
773
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
774
ctypes.POINTER(ctypes.c_ubyte),
775
ctypes.POINTER(ctypes.c_size_t)]
776
pubkey_get_key_id.restype = _error_code
777
778
pubkey_deinit = _library.gnutls_pubkey_deinit
779
pubkey_deinit.argtypes = [pubkey_t]
780
pubkey_deinit.restype = None
781
else:
782
# All the function declarations below are from gnutls/openpgp.h
783
784
openpgp_crt_init = _library.gnutls_openpgp_crt_init
785
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
786
openpgp_crt_init.restype = _error_code
787
788
openpgp_crt_import = _library.gnutls_openpgp_crt_import
789
openpgp_crt_import.argtypes = [openpgp_crt_t,
790
ctypes.POINTER(datum_t),
791
openpgp_crt_fmt_t]
792
openpgp_crt_import.restype = _error_code
793
794
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
795
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
796
ctypes.POINTER(ctypes.c_uint)]
797
openpgp_crt_verify_self.restype = _error_code
798
799
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
800
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
801
openpgp_crt_deinit.restype = None
802
803
openpgp_crt_get_fingerprint = (
804
_library.gnutls_openpgp_crt_get_fingerprint)
805
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
806
ctypes.c_void_p,
807
ctypes.POINTER(
808
ctypes.c_size_t)]
809
openpgp_crt_get_fingerprint.restype = _error_code
810
811
if check_version(b"3.6.4"):
812
certificate_type_get2 = _library.gnutls_certificate_type_get2
813
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
814
certificate_type_get2.restype = _error_code
815
816
# Remove non-public functions
817
del _error_code, _retry_on_error
818
819
820
def call_pipe(connection, # : multiprocessing.Connection
821
func, *args, **kwargs):
822
"""This function is meant to be called by multiprocessing.Process
823
824
This function runs func(*args, **kwargs), and writes the resulting
825
return value on the provided multiprocessing.Connection.
826
"""
827
connection.send(func(*args, **kwargs))
828
connection.close()
829
830
831
class Client:
240
832
"""A representation of a client host served by this server.
241
833
242
834
Attributes:
835
approved: bool(); 'None' if not yet approved/disapproved
836
approval_delay: datetime.timedelta(); Time to wait for approval
837
approval_duration: datetime.timedelta(); Duration of one approval
838
checker: multiprocessing.Process(); a running checker process used
839
to see if the client lives. 'None' if no process is
840
running.
841
checker_callback_tag: a GLib event source tag, or None
842
checker_command: string; External command which is run to check
843
if client lives. %() expansions are done at
844
runtime with vars(self) as dict, so that for
845
instance %(name)s can be used in the command.
846
checker_initiator_tag: a GLib event source tag, or None
847
created: datetime.datetime(); (UTC) object creation
848
client_structure: Object describing what attributes a client has
849
and is used for storing the client at exit
850
current_checker_command: string; current running checker_command
851
disable_initiator_tag: a GLib event source tag, or None
852
enabled: bool()
853
fingerprint: string (40 or 32 hexadecimal digits); used to
854
uniquely identify an OpenPGP client
855
key_id: string (64 hexadecimal digits); used to uniquely identify
856
a client using raw public keys
857
host: string; available for use by the checker command
858
interval: datetime.timedelta(); How often to start a new checker
859
last_approval_request: datetime.datetime(); (UTC) or None
860
last_checked_ok: datetime.datetime(); (UTC) or None
861
last_checker_status: integer between 0 and 255 reflecting exit
862
status of last checker. -1 reflects crashed
863
checker, -2 means no checker completed yet.
864
last_checker_signal: The signal which killed the last checker, if
865
last_checker_status is -1
866
last_enabled: datetime.datetime(); (UTC) or None
243
867
name: string; from the config file, used in log messages and
244
868
D-Bus identifiers
245
fingerprint: string (40 or 32 hexadecimal digits); used to
246
uniquely identify the client
247
869
secret: bytestring; sent verbatim (over TLS) to client
248
host: string; available for use by the checker command
249
created: datetime.datetime(); (UTC) object creation
250
last_enabled: datetime.datetime(); (UTC)
251
enabled: bool()
252
last_checked_ok: datetime.datetime(); (UTC) or None
253
870
timeout: datetime.timedelta(); How long from last_checked_ok
254
871
until this client is disabled
255
interval: datetime.timedelta(); How often to start a new checker
256
disable_hook: If set, called by disable() as disable_hook(self)
257
checker: subprocess.Popen(); a running checker process used
258
to see if the client lives.
259
'None' if no process is running.
260
checker_initiator_tag: a gobject event source tag, or None
261
disable_initiator_tag: - '' -
262
checker_callback_tag: - '' -
263
checker_command: string; External command which is run to check if
264
client lives. %() expansions are done at
265
runtime with vars(self) as dict, so that for
266
instance %(name)s can be used in the command.
267
current_checker_command: string; current running checker_command
268
approval_delay: datetime.timedelta(); Time to wait for approval
269
_approved: bool(); 'None' if not yet approved/disapproved
270
approval_duration: datetime.timedelta(); Duration of one approval
872
extended_timeout: extra long timeout when secret has been sent
873
runtime_expansions: Allowed attributes for runtime expansion.
874
expires: datetime.datetime(); time (UTC) when a client will be
875
disabled, or None
876
server_settings: The server_settings dict from main()
271
877
"""
272
878
879
runtime_expansions = ("approval_delay", "approval_duration",
880
"created", "enabled", "expires", "key_id",
881
"fingerprint", "host", "interval",
882
"last_approval_request", "last_checked_ok",
883
"last_enabled", "name", "timeout")
884
client_defaults = {
885
"timeout": "PT5M",
886
"extended_timeout": "PT15M",
887
"interval": "PT2M",
888
"checker": "fping -q -- %%(host)s",
889
"host": "",
890
"approval_delay": "PT0S",
891
"approval_duration": "PT1S",
892
"approved_by_default": "True",
893
"enabled": "True",
894
}
895
273
896
@staticmethod
274
def _timedelta_to_milliseconds(td):
275
"Convert a datetime.timedelta() to milliseconds"
276
return ((td.days * 24 * 60 * 60 * 1000)
277
+ (td.seconds * 1000)
278
+ (td.microseconds // 1000))
279
280
def timeout_milliseconds(self):
281
"Return the 'timeout' attribute in milliseconds"
282
return self._timedelta_to_milliseconds(self.timeout)
283
284
def interval_milliseconds(self):
285
"Return the 'interval' attribute in milliseconds"
286
return self._timedelta_to_milliseconds(self.interval)
287
288
def approval_delay_milliseconds(self):
289
return self._timedelta_to_milliseconds(self.approval_delay)
290
291
def __init__(self, name = None, disable_hook=None, config=None):
292
"""Note: the 'checker' key in 'config' sets the
293
'checker_command' attribute and *not* the 'checker'
294
attribute."""
897
def config_parser(config):
898
"""Construct a new dict of client settings of this form:
899
{ client_name: {setting_name: value, ...}, ...}
900
with exceptions for any special settings as defined above.
901
NOTE: Must be a pure function. Must return the same result
902
value given the same arguments.
903
"""
904
settings = {}
905
for client_name in config.sections():
906
section = dict(config.items(client_name))
907
client = settings[client_name] = {}
908
909
client["host"] = section["host"]
910
# Reformat values from string types to Python types
911
client["approved_by_default"] = config.getboolean(
912
client_name, "approved_by_default")
913
client["enabled"] = config.getboolean(client_name,
914
"enabled")
915
916
# Uppercase and remove spaces from key_id and fingerprint
917
# for later comparison purposes with return value from the
918
# key_id() and fingerprint() functions
919
client["key_id"] = (section.get("key_id", "").upper()
920
.replace(" ", ""))
921
client["fingerprint"] = (section["fingerprint"].upper()
922
.replace(" ", ""))
923
if "secret" in section:
924
client["secret"] = codecs.decode(section["secret"]
925
.encode("utf-8"),
926
"base64")
927
elif "secfile" in section:
928
with open(os.path.expanduser(os.path.expandvars
929
(section["secfile"])),
930
"rb") as secfile:
931
client["secret"] = secfile.read()
932
else:
933
raise TypeError("No secret or secfile for section {}"
934
.format(section))
935
client["timeout"] = string_to_delta(section["timeout"])
936
client["extended_timeout"] = string_to_delta(
937
section["extended_timeout"])
938
client["interval"] = string_to_delta(section["interval"])
939
client["approval_delay"] = string_to_delta(
940
section["approval_delay"])
941
client["approval_duration"] = string_to_delta(
942
section["approval_duration"])
943
client["checker_command"] = section["checker"]
944
client["last_approval_request"] = None
945
client["last_checked_ok"] = None
946
client["last_checker_status"] = -2
947
948
return settings
949
950
def __init__(self, settings, name=None, server_settings=None):
295
951
self.name = name
296
if config is None:
297
config = {}
298
logger.debug(u"Creating client %r", self.name)
299
# Uppercase and remove spaces from fingerprint for later
300
# comparison purposes with return value from the fingerprint()
301
# function
302
self.fingerprint = (config[u"fingerprint"].upper()
303
.replace(u" ", u""))
304
logger.debug(u" Fingerprint: %s", self.fingerprint)
305
if u"secret" in config:
306
self.secret = config[u"secret"].decode(u"base64")
307
elif u"secfile" in config:
308
with open(os.path.expanduser(os.path.expandvars
309
(config[u"secfile"])),
310
"rb") as secfile:
311
self.secret = secfile.read()
952
if server_settings is None:
953
server_settings = {}
954
self.server_settings = server_settings
955
# adding all client settings
956
for setting, value in settings.items():
957
setattr(self, setting, value)
958
959
if self.enabled:
960
if not hasattr(self, "last_enabled"):
961
self.last_enabled = datetime.datetime.utcnow()
962
if not hasattr(self, "expires"):
963
self.expires = (datetime.datetime.utcnow()
964
+ self.timeout)
312
965
else:
313
raise TypeError(u"No secret or secfile for client %s"
314
% self.name)
315
self.host = config.get(u"host", u"")
316
self.created = datetime.datetime.utcnow()
317
self.enabled = False
318
self.last_enabled = None
319
self.last_checked_ok = None
320
self.timeout = string_to_delta(config[u"timeout"])
321
self.interval = string_to_delta(config[u"interval"])
322
self.disable_hook = disable_hook
966
self.last_enabled = None
967
self.expires = None
968
969
logger.debug("Creating client %r", self.name)
970
logger.debug(" Key ID: %s", self.key_id)
971
logger.debug(" Fingerprint: %s", self.fingerprint)
972
self.created = settings.get("created",
973
datetime.datetime.utcnow())
974
975
# attributes specific for this server instance
323
976
self.checker = None
324
977
self.checker_initiator_tag = None
325
978
self.disable_initiator_tag = None
326
979
self.checker_callback_tag = None
327
self.checker_command = config[u"checker"]
328
980
self.current_checker_command = None
329
self.last_connect = None
330
self._approved = None
331
self.approved_by_default = config.get(u"approved_by_default",
332
True)
981
self.approved = None
333
982
self.approvals_pending = 0
334
self.approval_delay = string_to_delta(
335
config[u"approval_delay"])
336
self.approval_duration = string_to_delta(
337
config[u"approval_duration"])
338
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
339
983
self.changedstate = multiprocessing_manager.Condition(
984
multiprocessing_manager.Lock())
985
self.client_structure = [attr
986
for attr in self.__dict__.keys()
987
if not attr.startswith("_")]
988
self.client_structure.append("client_structure")
989
990
for name, t in inspect.getmembers(
991
type(self), lambda obj: isinstance(obj, property)):
992
if not name.startswith("_"):
993
self.client_structure.append(name)
994
995
# Send notice to process children that client state has changed
340
996
def send_changedstate(self):
341
self.changedstate.acquire()
342
self.changedstate.notify_all()
343
self.changedstate.release()
344
997
with self.changedstate:
998
self.changedstate.notify_all()
999
345
1000
def enable(self):
346
1001
"""Start this client's checker and timeout hooks"""
347
if getattr(self, u"enabled", False):
1002
if getattr(self, "enabled", False):
348
1003
# Already enabled
349
1004
return
350
self.send_changedstate()
1005
self.expires = datetime.datetime.utcnow() + self.timeout
1006
self.enabled = True
351
1007
self.last_enabled = datetime.datetime.utcnow()
1008
self.init_checker()
1009
self.send_changedstate()
1010
1011
def disable(self, quiet=True):
1012
"""Disable this client."""
1013
if not getattr(self, "enabled", False):
1014
return False
1015
if not quiet:
1016
logger.info("Disabling client %s", self.name)
1017
if getattr(self, "disable_initiator_tag", None) is not None:
1018
GLib.source_remove(self.disable_initiator_tag)
1019
self.disable_initiator_tag = None
1020
self.expires = None
1021
if getattr(self, "checker_initiator_tag", None) is not None:
1022
GLib.source_remove(self.checker_initiator_tag)
1023
self.checker_initiator_tag = None
1024
self.stop_checker()
1025
self.enabled = False
1026
if not quiet:
1027
self.send_changedstate()
1028
# Do not run this again if called by a GLib.timeout_add
1029
return False
1030
1031
def __del__(self):
1032
self.disable()
1033
1034
def init_checker(self):
352
1035
# Schedule a new checker to be started an 'interval' from now,
353
1036
# and every interval from then on.
354
self.checker_initiator_tag = (gobject.timeout_add
355
(self.interval_milliseconds(),
356
self.start_checker))
1037
if self.checker_initiator_tag is not None:
1038
GLib.source_remove(self.checker_initiator_tag)
1039
self.checker_initiator_tag = GLib.timeout_add(
1040
int(self.interval.total_seconds() * 1000),
1041
self.start_checker)
357
1042
# Schedule a disable() when 'timeout' has passed
358
self.disable_initiator_tag = (gobject.timeout_add
359
(self.timeout_milliseconds(),
360
self.disable))
361
self.enabled = True
1043
if self.disable_initiator_tag is not None:
1044
GLib.source_remove(self.disable_initiator_tag)
1045
self.disable_initiator_tag = GLib.timeout_add(
1046
int(self.timeout.total_seconds() * 1000), self.disable)
362
1047
# Also start a new checker *right now*.
363
1048
self.start_checker()
364
365
def disable(self, quiet=True):
366
"""Disable this client."""
367
if not getattr(self, "enabled", False):
368
return False
369
if not quiet:
370
self.send_changedstate()
371
if not quiet:
372
logger.info(u"Disabling client %s", self.name)
373
if getattr(self, u"disable_initiator_tag", False):
374
gobject.source_remove(self.disable_initiator_tag)
375
self.disable_initiator_tag = None
376
if getattr(self, u"checker_initiator_tag", False):
377
gobject.source_remove(self.checker_initiator_tag)
378
self.checker_initiator_tag = None
379
self.stop_checker()
380
if self.disable_hook:
381
self.disable_hook(self)
382
self.enabled = False
383
# Do not run this again if called by a gobject.timeout_add
384
return False
385
386
def __del__(self):
387
self.disable_hook = None
388
self.disable()
389
390
def checker_callback(self, pid, condition, command):
1049
1050
def checker_callback(self, source, condition, connection,
1051
command):
391
1052
"""The checker has completed, so take appropriate actions."""
1053
# Read return code from connection (see call_pipe)
1054
returncode = connection.recv()
1055
connection.close()
1056
if self.checker is not None:
1057
self.checker.join()
392
1058
self.checker_callback_tag = None
393
1059
self.checker = None
394
if os.WIFEXITED(condition):
395
exitstatus = os.WEXITSTATUS(condition)
396
if exitstatus == 0:
397
logger.info(u"Checker for %(name)s succeeded",
1060
1061
if returncode >= 0:
1062
self.last_checker_status = returncode
1063
self.last_checker_signal = None
1064
if self.last_checker_status == 0:
1065
logger.info("Checker for %(name)s succeeded",
398
1066
vars(self))
399
1067
self.checked_ok()
400
1068
else:
401
logger.info(u"Checker for %(name)s failed",
402
vars(self))
1069
logger.info("Checker for %(name)s failed", vars(self))
403
1070
else:
404
logger.warning(u"Checker for %(name)s crashed?",
1071
self.last_checker_status = -1
1072
self.last_checker_signal = -returncode
1073
logger.warning("Checker for %(name)s crashed?",
405
1074
vars(self))
406
1075
return False
1076
407
1077
def checked_ok(self):
408
"""Bump up the timeout for this client.
409
410
This should only be called when the client has been seen,
411
alive and well.
412
"""
1078
"""Assert that the client has been seen, alive and well."""
413
1079
self.last_checked_ok = datetime.datetime.utcnow()
414
gobject.source_remove(self.disable_initiator_tag)
415
self.disable_initiator_tag = (gobject.timeout_add
416
(self.timeout_milliseconds(),
417
self.disable))
418
1080
self.last_checker_status = 0
1081
self.last_checker_signal = None
1082
self.bump_timeout()
1083
1084
def bump_timeout(self, timeout=None):
1085
"""Bump up the timeout for this client."""
1086
if timeout is None:
1087
timeout = self.timeout
1088
if self.disable_initiator_tag is not None:
1089
GLib.source_remove(self.disable_initiator_tag)
1090
self.disable_initiator_tag = None
1091
if getattr(self, "enabled", False):
1092
self.disable_initiator_tag = GLib.timeout_add(
1093
int(timeout.total_seconds() * 1000), self.disable)
1094
self.expires = datetime.datetime.utcnow() + timeout
1095
1096
def need_approval(self):
1097
self.last_approval_request = datetime.datetime.utcnow()
1098
419
1099
def start_checker(self):
420
1100
"""Start a new checker subprocess if one is not running.
421
1101
422
1102
If a checker already exists, leave it running and do
423
1103
nothing."""
424
1104
# The reason for not killing a running checker is that if we
425
# did that, then if a checker (for some reason) started
426
# running slowly and taking more than 'interval' time, the
427
# client would inevitably timeout, since no checker would get
428
# a chance to run to completion. If we instead leave running
1105
# did that, and if a checker (for some reason) started running
1106
# slowly and taking more than 'interval' time, then the client
1107
# would inevitably timeout, since no checker would get a
1108
# chance to run to completion. If we instead leave running
429
1109
# checkers alone, the checker would have to take more time
430
1110
# than 'timeout' for the client to be disabled, which is as it
431
1111
# should be.
432
433
# If a checker exists, make sure it is not a zombie
434
try:
435
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
436
except (AttributeError, OSError), error:
437
if (isinstance(error, OSError)
438
and error.errno != errno.ECHILD):
439
raise error
440
else:
441
if pid:
442
logger.warning(u"Checker was a zombie")
443
gobject.source_remove(self.checker_callback_tag)
444
self.checker_callback(pid, status,
445
self.current_checker_command)
1112
1113
if self.checker is not None and not self.checker.is_alive():
1114
logger.warning("Checker was not alive; joining")
1115
self.checker.join()
1116
self.checker = None
446
1117
# Start a new checker if needed
447
1118
if self.checker is None:
1119
# Escape attributes for the shell
1120
escaped_attrs = {
1121
attr: re.escape(str(getattr(self, attr)))
1122
for attr in self.runtime_expansions}
448
1123
try:
449
# In case checker_command has exactly one % operator
450
command = self.checker_command % self.host
451
except TypeError:
452
# Escape attributes for the shell
453
escaped_attrs = dict((key,
454
re.escape(unicode(str(val),
455
errors=
456
u'replace')))
457
for key, val in
458
vars(self).iteritems())
459
try:
460
command = self.checker_command % escaped_attrs
461
except TypeError, error:
462
logger.error(u'Could not format string "%s":'
463
u' %s', self.checker_command, error)
464
return True # Try again later
1124
command = self.checker_command % escaped_attrs
1125
except TypeError as error:
1126
logger.error('Could not format string "%s"',
1127
self.checker_command,
1128
exc_info=error)
1129
return True # Try again later
465
1130
self.current_checker_command = command
466
try:
467
logger.info(u"Starting checker %r for %s",
468
command, self.name)
469
# We don't need to redirect stdout and stderr, since
470
# in normal mode, that is already done by daemon(),
471
# and in debug mode we don't want to. (Stdin is
472
# always replaced by /dev/null.)
473
self.checker = subprocess.Popen(command,
474
close_fds=True,
475
shell=True, cwd=u"/")
476
self.checker_callback_tag = (gobject.child_watch_add
477
(self.checker.pid,
478
self.checker_callback,
479
data=command))
480
# The checker may have completed before the gobject
481
# watch was added. Check for this.
482
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
483
if pid:
484
gobject.source_remove(self.checker_callback_tag)
485
self.checker_callback(pid, status, command)
486
except OSError, error:
487
logger.error(u"Failed to start subprocess: %s",
488
error)
489
# Re-run this periodically if run by gobject.timeout_add
1131
logger.info("Starting checker %r for %s", command,
1132
self.name)
1133
# We don't need to redirect stdout and stderr, since
1134
# in normal mode, that is already done by daemon(),
1135
# and in debug mode we don't want to. (Stdin is
1136
# always replaced by /dev/null.)
1137
# The exception is when not debugging but nevertheless
1138
# running in the foreground; use the previously
1139
# created wnull.
1140
popen_args = {"close_fds": True,
1141
"shell": True,
1142
"cwd": "/"}
1143
if (not self.server_settings["debug"]
1144
and self.server_settings["foreground"]):
1145
popen_args.update({"stdout": wnull,
1146
"stderr": wnull})
1147
pipe = multiprocessing.Pipe(duplex=False)
1148
self.checker = multiprocessing.Process(
1149
target=call_pipe,
1150
args=(pipe[1], subprocess.call, command),
1151
kwargs=popen_args)
1152
self.checker.start()
1153
self.checker_callback_tag = GLib.io_add_watch(
1154
GLib.IOChannel.unix_new(pipe[0].fileno()),
1155
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1156
self.checker_callback, pipe[0], command)
1157
# Re-run this periodically if run by GLib.timeout_add
490
1158
return True
491
1159
492
1160
def stop_checker(self):
493
1161
"""Force the checker process, if any, to stop."""
494
1162
if self.checker_callback_tag:
495
gobject.source_remove(self.checker_callback_tag)
1163
GLib.source_remove(self.checker_callback_tag)
496
1164
self.checker_callback_tag = None
497
if getattr(self, u"checker", None) is None:
1165
if getattr(self, "checker", None) is None:
498
1166
return
499
logger.debug(u"Stopping checker for %(name)s", vars(self))
500
try:
501
os.kill(self.checker.pid, signal.SIGTERM)
502
#time.sleep(0.5)
503
#if self.checker.poll() is None:
504
# os.kill(self.checker.pid, signal.SIGKILL)
505
except OSError, error:
506
if error.errno != errno.ESRCH: # No such process
507
raise
1167
logger.debug("Stopping checker for %(name)s", vars(self))
1168
self.checker.terminate()
508
1169
self.checker = None
509
1170
510
def dbus_service_property(dbus_interface, signature=u"v",
511
access=u"readwrite", byte_arrays=False):
1171
1172
def dbus_service_property(dbus_interface,
1173
signature="v",
1174
access="readwrite",
1175
byte_arrays=False):
512
1176
"""Decorators for marking methods of a DBusObjectWithProperties to
513
1177
become properties on the D-Bus.
514
1178
515
1179
The decorated method will be called with no arguments by "Get"
516
1180
and with one argument by "Set".
517
1181
518
1182
The parameters, where they are supported, are the same as
519
1183
dbus.service.method, except there is only "signature", since the
520
1184
type from Get() and the type sent to Set() is the same.
521
1185
"""
522
1186
# Encoding deeply encoded byte arrays is not supported yet by the
523
1187
# "Set" method, so we fail early here:
524
if byte_arrays and signature != u"ay":
525
raise ValueError(u"Byte arrays not supported for non-'ay'"
526
u" signature %r" % signature)
1188
if byte_arrays and signature != "ay":
1189
raise ValueError("Byte arrays not supported for non-'ay'"
1190
" signature {!r}".format(signature))
1191
527
1192
def decorator(func):
528
1193
func._dbus_is_property = True
529
1194
func._dbus_interface = dbus_interface
530
1195
func._dbus_signature = signature
531
1196
func._dbus_access = access
532
1197
func._dbus_name = func.__name__
533
if func._dbus_name.endswith(u"_dbus_property"):
1198
if func._dbus_name.endswith("_dbus_property"):
534
1199
func._dbus_name = func._dbus_name[:-14]
535
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
536
return func
1200
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1201
return func
1202
1203
return decorator
1204
1205
1206
def dbus_interface_annotations(dbus_interface):
1207
"""Decorator for marking functions returning interface annotations
1208
1209
Usage:
1210
1211
@dbus_interface_annotations("org.example.Interface")
1212
def _foo(self): # Function name does not matter
1213
return {"org.freedesktop.DBus.Deprecated": "true",
1214
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1215
"false"}
1216
"""
1217
1218
def decorator(func):
1219
func._dbus_is_interface = True
1220
func._dbus_interface = dbus_interface
1221
func._dbus_name = dbus_interface
1222
return func
1223
1224
return decorator
1225
1226
1227
def dbus_annotations(annotations):
1228
"""Decorator to annotate D-Bus methods, signals or properties
1229
Usage:
1230
1231
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1232
"org.freedesktop.DBus.Property."
1233
"EmitsChangedSignal": "false"})
1234
@dbus_service_property("org.example.Interface", signature="b",
1235
access="r")
1236
def Property_dbus_property(self):
1237
return dbus.Boolean(False)
1238
1239
See also the DBusObjectWithAnnotations class.
1240
"""
1241
1242
def decorator(func):
1243
func._dbus_annotations = annotations
1244
return func
1245
537
1246
return decorator
538
1247
539
1248
540
1249
class DBusPropertyException(dbus.exceptions.DBusException):
541
1250
"""A base class for D-Bus property-related exceptions
542
1251
"""
543
def __unicode__(self):
544
return unicode(str(self))
1252
pass
545
1253
546
1254
547
1255
class DBusPropertyAccessException(DBusPropertyException):
556
1264
pass
557
1265
558
1266
559
class DBusObjectWithProperties(dbus.service.Object):
1267
class DBusObjectWithAnnotations(dbus.service.Object):
1268
"""A D-Bus object with annotations.
1269
1270
Classes inheriting from this can use the dbus_annotations
1271
decorator to add annotations to methods or signals.
1272
"""
1273
1274
@staticmethod
1275
def _is_dbus_thing(thing):
1276
"""Returns a function testing if an attribute is a D-Bus thing
1277
1278
If called like _is_dbus_thing("method") it returns a function
1279
suitable for use as predicate to inspect.getmembers().
1280
"""
1281
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1282
False)
1283
1284
def _get_all_dbus_things(self, thing):
1285
"""Returns a generator of (name, attribute) pairs
1286
"""
1287
return ((getattr(athing.__get__(self), "_dbus_name", name),
1288
athing.__get__(self))
1289
for cls in self.__class__.__mro__
1290
for name, athing in
1291
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1292
1293
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1294
out_signature="s",
1295
path_keyword='object_path',
1296
connection_keyword='connection')
1297
def Introspect(self, object_path, connection):
1298
"""Overloading of standard D-Bus method.
1299
1300
Inserts annotation tags on methods and signals.
1301
"""
1302
xmlstring = dbus.service.Object.Introspect(self, object_path,
1303
connection)
1304
try:
1305
document = xml.dom.minidom.parseString(xmlstring)
1306
1307
for if_tag in document.getElementsByTagName("interface"):
1308
# Add annotation tags
1309
for typ in ("method", "signal"):
1310
for tag in if_tag.getElementsByTagName(typ):
1311
annots = dict()
1312
for name, prop in (self.
1313
_get_all_dbus_things(typ)):
1314
if (name == tag.getAttribute("name")
1315
and prop._dbus_interface
1316
== if_tag.getAttribute("name")):
1317
annots.update(getattr(
1318
prop, "_dbus_annotations", {}))
1319
for name, value in annots.items():
1320
ann_tag = document.createElement(
1321
"annotation")
1322
ann_tag.setAttribute("name", name)
1323
ann_tag.setAttribute("value", value)
1324
tag.appendChild(ann_tag)
1325
# Add interface annotation tags
1326
for annotation, value in dict(
1327
itertools.chain.from_iterable(
1328
annotations().items()
1329
for name, annotations
1330
in self._get_all_dbus_things("interface")
1331
if name == if_tag.getAttribute("name")
1332
)).items():
1333
ann_tag = document.createElement("annotation")
1334
ann_tag.setAttribute("name", annotation)
1335
ann_tag.setAttribute("value", value)
1336
if_tag.appendChild(ann_tag)
1337
# Fix argument name for the Introspect method itself
1338
if (if_tag.getAttribute("name")
1339
== dbus.INTROSPECTABLE_IFACE):
1340
for cn in if_tag.getElementsByTagName("method"):
1341
if cn.getAttribute("name") == "Introspect":
1342
for arg in cn.getElementsByTagName("arg"):
1343
if (arg.getAttribute("direction")
1344
== "out"):
1345
arg.setAttribute("name",
1346
"xml_data")
1347
xmlstring = document.toxml("utf-8")
1348
document.unlink()
1349
except (AttributeError, xml.dom.DOMException,
1350
xml.parsers.expat.ExpatError) as error:
1351
logger.error("Failed to override Introspection method",
1352
exc_info=error)
1353
return xmlstring
1354
1355
1356
class DBusObjectWithProperties(DBusObjectWithAnnotations):
560
1357
"""A D-Bus object with properties.
561
1358
562
1359
Classes inheriting from this can use the dbus_service_property
563
1360
decorator to expose methods as D-Bus properties. It exposes the
564
1361
standard Get(), Set(), and GetAll() methods on the D-Bus.
565
1362
"""
566
567
@staticmethod
568
def _is_dbus_property(obj):
569
return getattr(obj, u"_dbus_is_property", False)
570
571
def _get_all_dbus_properties(self):
572
"""Returns a generator of (name, attribute) pairs
573
"""
574
return ((prop._dbus_name, prop)
575
for name, prop in
576
inspect.getmembers(self, self._is_dbus_property))
577
1363
578
1364
def _get_dbus_property(self, interface_name, property_name):
579
1365
"""Returns a bound method if one exists which is a D-Bus
580
1366
property with the specified name and interface.
581
1367
"""
582
for name in (property_name,
583
property_name + u"_dbus_property"):
584
prop = getattr(self, name, None)
585
if (prop is None
586
or not self._is_dbus_property(prop)
587
or prop._dbus_name != property_name
588
or (interface_name and prop._dbus_interface
589
and interface_name != prop._dbus_interface)):
590
continue
591
return prop
1368
for cls in self.__class__.__mro__:
1369
for name, value in inspect.getmembers(
1370
cls, self._is_dbus_thing("property")):
1371
if (value._dbus_name == property_name
1372
and value._dbus_interface == interface_name):
1373
return value.__get__(self)
1374
592
1375
# No such property
593
raise DBusPropertyNotFound(self.dbus_object_path + u":"
594
+ interface_name + u"."
595
+ property_name)
596
597
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
598
out_signature=u"v")
1376
raise DBusPropertyNotFound("{}:{}.{}".format(
1377
self.dbus_object_path, interface_name, property_name))
1378
1379
@classmethod
1380
def _get_all_interface_names(cls):
1381
"""Get a sequence of all interfaces supported by an object"""
1382
return (name for name in set(getattr(getattr(x, attr),
1383
"_dbus_interface", None)
1384
for x in (inspect.getmro(cls))
1385
for attr in dir(x))
1386
if name is not None)
1387
1388
@dbus.service.method(dbus.PROPERTIES_IFACE,
1389
in_signature="ss",
1390
out_signature="v")
599
1391
def Get(self, interface_name, property_name):
600
1392
"""Standard D-Bus property Get() method, see D-Bus standard.
601
1393
"""
602
1394
prop = self._get_dbus_property(interface_name, property_name)
603
if prop._dbus_access == u"write":
1395
if prop._dbus_access == "write":
604
1396
raise DBusPropertyAccessException(property_name)
605
1397
value = prop()
606
if not hasattr(value, u"variant_level"):
1398
if not hasattr(value, "variant_level"):
607
1399
return value
608
1400
return type(value)(value, variant_level=value.variant_level+1)
609
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1401
1402
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
611
1403
def Set(self, interface_name, property_name, value):
612
1404
"""Standard D-Bus property Set() method, see D-Bus standard.
613
1405
"""
614
1406
prop = self._get_dbus_property(interface_name, property_name)
615
if prop._dbus_access == u"read":
1407
if prop._dbus_access == "read":
616
1408
raise DBusPropertyAccessException(property_name)
617
if prop._dbus_get_args_options[u"byte_arrays"]:
1409
if prop._dbus_get_args_options["byte_arrays"]:
618
1410
# The byte_arrays option is not supported yet on
619
1411
# signatures other than "ay".
620
if prop._dbus_signature != u"ay":
621
raise ValueError
622
value = dbus.ByteArray(''.join(unichr(byte)
623
for byte in value))
1412
if prop._dbus_signature != "ay":
1413
raise ValueError("Byte arrays not supported for non-"
1414
"'ay' signature {!r}"
1415
.format(prop._dbus_signature))
1416
value = dbus.ByteArray(b''.join(chr(byte)
1417
for byte in value))
624
1418
prop(value)
625
626
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
627
out_signature=u"a{sv}")
1419
1420
@dbus.service.method(dbus.PROPERTIES_IFACE,
1421
in_signature="s",
1422
out_signature="a{sv}")
628
1423
def GetAll(self, interface_name):
629
1424
"""Standard D-Bus property GetAll() method, see D-Bus
630
1425
standard.
631
1426
632
1427
Note: Will not include properties with access="write".
633
1428
"""
634
all = {}
635
for name, prop in self._get_all_dbus_properties():
1429
properties = {}
1430
for name, prop in self._get_all_dbus_things("property"):
636
1431
if (interface_name
637
1432
and interface_name != prop._dbus_interface):
638
1433
# Interface non-empty but did not match
639
1434
continue
640
1435
# Ignore write-only properties
641
if prop._dbus_access == u"write":
1436
if prop._dbus_access == "write":
642
1437
continue
643
1438
value = prop()
644
if not hasattr(value, u"variant_level"):
645
all[name] = value
1439
if not hasattr(value, "variant_level"):
1440
properties[name] = value
646
1441
continue
647
all[name] = type(value)(value, variant_level=
648
value.variant_level+1)
649
return dbus.Dictionary(all, signature=u"sv")
650
1442
properties[name] = type(value)(
1443
value, variant_level=value.variant_level + 1)
1444
return dbus.Dictionary(properties, signature="sv")
1445
1446
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1447
def PropertiesChanged(self, interface_name, changed_properties,
1448
invalidated_properties):
1449
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1450
standard.
1451
"""
1452
pass
1453
651
1454
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
652
out_signature=u"s",
1455
out_signature="s",
653
1456
path_keyword='object_path',
654
1457
connection_keyword='connection')
655
1458
def Introspect(self, object_path, connection):
656
"""Standard D-Bus method, overloaded to insert property tags.
1459
"""Overloading of standard D-Bus method.
1460
1461
Inserts property tags and interface annotation tags.
657
1462
"""
658
xmlstring = dbus.service.Object.Introspect(self, object_path,
659
connection)
1463
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1464
object_path,
1465
connection)
660
1466
try:
661
1467
document = xml.dom.minidom.parseString(xmlstring)
1468
662
1469
def make_tag(document, name, prop):
663
e = document.createElement(u"property")
664
e.setAttribute(u"name", name)
665
e.setAttribute(u"type", prop._dbus_signature)
666
e.setAttribute(u"access", prop._dbus_access)
1470
e = document.createElement("property")
1471
e.setAttribute("name", name)
1472
e.setAttribute("type", prop._dbus_signature)
1473
e.setAttribute("access", prop._dbus_access)
667
1474
return e
668
for if_tag in document.getElementsByTagName(u"interface"):
1475
1476
for if_tag in document.getElementsByTagName("interface"):
1477
# Add property tags
669
1478
for tag in (make_tag(document, name, prop)
670
1479
for name, prop
671
in self._get_all_dbus_properties()
1480
in self._get_all_dbus_things("property")
672
1481
if prop._dbus_interface
673
== if_tag.getAttribute(u"name")):
1482
== if_tag.getAttribute("name")):
674
1483
if_tag.appendChild(tag)
1484
# Add annotation tags for properties
1485
for tag in if_tag.getElementsByTagName("property"):
1486
annots = dict()
1487
for name, prop in self._get_all_dbus_things(
1488
"property"):
1489
if (name == tag.getAttribute("name")
1490
and prop._dbus_interface
1491
== if_tag.getAttribute("name")):
1492
annots.update(getattr(
1493
prop, "_dbus_annotations", {}))
1494
for name, value in annots.items():
1495
ann_tag = document.createElement(
1496
"annotation")
1497
ann_tag.setAttribute("name", name)
1498
ann_tag.setAttribute("value", value)
1499
tag.appendChild(ann_tag)
675
1500
# Add the names to the return values for the
676
1501
# "org.freedesktop.DBus.Properties" methods
677
if (if_tag.getAttribute(u"name")
678
== u"org.freedesktop.DBus.Properties"):
679
for cn in if_tag.getElementsByTagName(u"method"):
680
if cn.getAttribute(u"name") == u"Get":
681
for arg in cn.getElementsByTagName(u"arg"):
682
if (arg.getAttribute(u"direction")
683
== u"out"):
684
arg.setAttribute(u"name", u"value")
685
elif cn.getAttribute(u"name") == u"GetAll":
686
for arg in cn.getElementsByTagName(u"arg"):
687
if (arg.getAttribute(u"direction")
688
== u"out"):
689
arg.setAttribute(u"name", u"props")
690
xmlstring = document.toxml(u"utf-8")
691
document.unlink()
692
except (AttributeError, xml.dom.DOMException,
693
xml.parsers.expat.ExpatError), error:
694
logger.error(u"Failed to override Introspection method",
695
error)
696
return xmlstring
697
698
1502
if (if_tag.getAttribute("name")
1503
== "org.freedesktop.DBus.Properties"):
1504
for cn in if_tag.getElementsByTagName("method"):
1505
if cn.getAttribute("name") == "Get":
1506
for arg in cn.getElementsByTagName("arg"):
1507
if (arg.getAttribute("direction")
1508
== "out"):
1509
arg.setAttribute("name", "value")
1510
elif cn.getAttribute("name") == "GetAll":
1511
for arg in cn.getElementsByTagName("arg"):
1512
if (arg.getAttribute("direction")
1513
== "out"):
1514
arg.setAttribute("name", "props")
1515
xmlstring = document.toxml("utf-8")
1516
document.unlink()
1517
except (AttributeError, xml.dom.DOMException,
1518
xml.parsers.expat.ExpatError) as error:
1519
logger.error("Failed to override Introspection method",
1520
exc_info=error)
1521
return xmlstring
1522
1523
1524
try:
1525
dbus.OBJECT_MANAGER_IFACE
1526
except AttributeError:
1527
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1528
1529
1530
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1531
"""A D-Bus object with an ObjectManager.
1532
1533
Classes inheriting from this exposes the standard
1534
GetManagedObjects call and the InterfacesAdded and
1535
InterfacesRemoved signals on the standard
1536
"org.freedesktop.DBus.ObjectManager" interface.
1537
1538
Note: No signals are sent automatically; they must be sent
1539
manually.
1540
"""
1541
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1542
out_signature="a{oa{sa{sv}}}")
1543
def GetManagedObjects(self):
1544
"""This function must be overridden"""
1545
raise NotImplementedError()
1546
1547
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1548
signature="oa{sa{sv}}")
1549
def InterfacesAdded(self, object_path, interfaces_and_properties):
1550
pass
1551
1552
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1553
def InterfacesRemoved(self, object_path, interfaces):
1554
pass
1555
1556
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1557
out_signature="s",
1558
path_keyword='object_path',
1559
connection_keyword='connection')
1560
def Introspect(self, object_path, connection):
1561
"""Overloading of standard D-Bus method.
1562
1563
Override return argument name of GetManagedObjects to be
1564
"objpath_interfaces_and_properties"
1565
"""
1566
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1567
object_path,
1568
connection)
1569
try:
1570
document = xml.dom.minidom.parseString(xmlstring)
1571
1572
for if_tag in document.getElementsByTagName("interface"):
1573
# Fix argument name for the GetManagedObjects method
1574
if (if_tag.getAttribute("name")
1575
== dbus.OBJECT_MANAGER_IFACE):
1576
for cn in if_tag.getElementsByTagName("method"):
1577
if (cn.getAttribute("name")
1578
== "GetManagedObjects"):
1579
for arg in cn.getElementsByTagName("arg"):
1580
if (arg.getAttribute("direction")
1581
== "out"):
1582
arg.setAttribute(
1583
"name",
1584
"objpath_interfaces"
1585
"_and_properties")
1586
xmlstring = document.toxml("utf-8")
1587
document.unlink()
1588
except (AttributeError, xml.dom.DOMException,
1589
xml.parsers.expat.ExpatError) as error:
1590
logger.error("Failed to override Introspection method",
1591
exc_info=error)
1592
return xmlstring
1593
1594
1595
def datetime_to_dbus(dt, variant_level=0):
1596
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1597
if dt is None:
1598
return dbus.String("", variant_level=variant_level)
1599
return dbus.String(dt.isoformat(), variant_level=variant_level)
1600
1601
1602
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1603
"""A class decorator; applied to a subclass of
1604
dbus.service.Object, it will add alternate D-Bus attributes with
1605
interface names according to the "alt_interface_names" mapping.
1606
Usage:
1607
1608
@alternate_dbus_interfaces({"org.example.Interface":
1609
"net.example.AlternateInterface"})
1610
class SampleDBusObject(dbus.service.Object):
1611
@dbus.service.method("org.example.Interface")
1612
def SampleDBusMethod():
1613
pass
1614
1615
The above "SampleDBusMethod" on "SampleDBusObject" will be
1616
reachable via two interfaces: "org.example.Interface" and
1617
"net.example.AlternateInterface", the latter of which will have
1618
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1619
"true", unless "deprecate" is passed with a False value.
1620
1621
This works for methods and signals, and also for D-Bus properties
1622
(from DBusObjectWithProperties) and interfaces (from the
1623
dbus_interface_annotations decorator).
1624
"""
1625
1626
def wrapper(cls):
1627
for orig_interface_name, alt_interface_name in (
1628
alt_interface_names.items()):
1629
attr = {}
1630
interface_names = set()
1631
# Go though all attributes of the class
1632
for attrname, attribute in inspect.getmembers(cls):
1633
# Ignore non-D-Bus attributes, and D-Bus attributes
1634
# with the wrong interface name
1635
if (not hasattr(attribute, "_dbus_interface")
1636
or not attribute._dbus_interface.startswith(
1637
orig_interface_name)):
1638
continue
1639
# Create an alternate D-Bus interface name based on
1640
# the current name
1641
alt_interface = attribute._dbus_interface.replace(
1642
orig_interface_name, alt_interface_name)
1643
interface_names.add(alt_interface)
1644
# Is this a D-Bus signal?
1645
if getattr(attribute, "_dbus_is_signal", False):
1646
# Extract the original non-method undecorated
1647
# function by black magic
1648
if sys.version_info.major == 2:
1649
nonmethod_func = (dict(
1650
zip(attribute.func_code.co_freevars,
1651
attribute.__closure__))
1652
["func"].cell_contents)
1653
else:
1654
nonmethod_func = (dict(
1655
zip(attribute.__code__.co_freevars,
1656
attribute.__closure__))
1657
["func"].cell_contents)
1658
# Create a new, but exactly alike, function
1659
# object, and decorate it to be a new D-Bus signal
1660
# with the alternate D-Bus interface name
1661
new_function = copy_function(nonmethod_func)
1662
new_function = (dbus.service.signal(
1663
alt_interface,
1664
attribute._dbus_signature)(new_function))
1665
# Copy annotations, if any
1666
try:
1667
new_function._dbus_annotations = dict(
1668
attribute._dbus_annotations)
1669
except AttributeError:
1670
pass
1671
1672
# Define a creator of a function to call both the
1673
# original and alternate functions, so both the
1674
# original and alternate signals gets sent when
1675
# the function is called
1676
def fixscope(func1, func2):
1677
"""This function is a scope container to pass
1678
func1 and func2 to the "call_both" function
1679
outside of its arguments"""
1680
1681
@functools.wraps(func2)
1682
def call_both(*args, **kwargs):
1683
"""This function will emit two D-Bus
1684
signals by calling func1 and func2"""
1685
func1(*args, **kwargs)
1686
func2(*args, **kwargs)
1687
# Make wrapper function look like a D-Bus
1688
# signal
1689
for name, attr in inspect.getmembers(func2):
1690
if name.startswith("_dbus_"):
1691
setattr(call_both, name, attr)
1692
1693
return call_both
1694
# Create the "call_both" function and add it to
1695
# the class
1696
attr[attrname] = fixscope(attribute, new_function)
1697
# Is this a D-Bus method?
1698
elif getattr(attribute, "_dbus_is_method", False):
1699
# Create a new, but exactly alike, function
1700
# object. Decorate it to be a new D-Bus method
1701
# with the alternate D-Bus interface name. Add it
1702
# to the class.
1703
attr[attrname] = (
1704
dbus.service.method(
1705
alt_interface,
1706
attribute._dbus_in_signature,
1707
attribute._dbus_out_signature)
1708
(copy_function(attribute)))
1709
# Copy annotations, if any
1710
try:
1711
attr[attrname]._dbus_annotations = dict(
1712
attribute._dbus_annotations)
1713
except AttributeError:
1714
pass
1715
# Is this a D-Bus property?
1716
elif getattr(attribute, "_dbus_is_property", False):
1717
# Create a new, but exactly alike, function
1718
# object, and decorate it to be a new D-Bus
1719
# property with the alternate D-Bus interface
1720
# name. Add it to the class.
1721
attr[attrname] = (dbus_service_property(
1722
alt_interface, attribute._dbus_signature,
1723
attribute._dbus_access,
1724
attribute._dbus_get_args_options
1725
["byte_arrays"])
1726
(copy_function(attribute)))
1727
# Copy annotations, if any
1728
try:
1729
attr[attrname]._dbus_annotations = dict(
1730
attribute._dbus_annotations)
1731
except AttributeError:
1732
pass
1733
# Is this a D-Bus interface?
1734
elif getattr(attribute, "_dbus_is_interface", False):
1735
# Create a new, but exactly alike, function
1736
# object. Decorate it to be a new D-Bus interface
1737
# with the alternate D-Bus interface name. Add it
1738
# to the class.
1739
attr[attrname] = (
1740
dbus_interface_annotations(alt_interface)
1741
(copy_function(attribute)))
1742
if deprecate:
1743
# Deprecate all alternate interfaces
1744
iname = "_AlternateDBusNames_interface_annotation{}"
1745
for interface_name in interface_names:
1746
1747
@dbus_interface_annotations(interface_name)
1748
def func(self):
1749
return {"org.freedesktop.DBus.Deprecated":
1750
"true"}
1751
# Find an unused name
1752
for aname in (iname.format(i)
1753
for i in itertools.count()):
1754
if aname not in attr:
1755
attr[aname] = func
1756
break
1757
if interface_names:
1758
# Replace the class with a new subclass of it with
1759
# methods, signals, etc. as created above.
1760
if sys.version_info.major == 2:
1761
cls = type(b"{}Alternate".format(cls.__name__),
1762
(cls, ), attr)
1763
else:
1764
cls = type("{}Alternate".format(cls.__name__),
1765
(cls, ), attr)
1766
return cls
1767
1768
return wrapper
1769
1770
1771
@alternate_dbus_interfaces({"se.recompile.Mandos":
1772
"se.bsnet.fukt.Mandos"})
699
1773
class ClientDBus(Client, DBusObjectWithProperties):
700
1774
"""A Client class using D-Bus
701
1775
702
1776
Attributes:
703
1777
dbus_object_path: dbus.ObjectPath
704
1778
bus: dbus.SystemBus()
705
1779
"""
1780
1781
runtime_expansions = (Client.runtime_expansions
1782
+ ("dbus_object_path", ))
1783
1784
_interface = "se.recompile.Mandos.Client"
1785
706
1786
# dbus.service.Object doesn't use super(), so we can't either.
707
708
def __init__(self, bus = None, *args, **kwargs):
709
self._approvals_pending = 0
1787
1788
def __init__(self, bus=None, *args, **kwargs):
710
1789
self.bus = bus
711
1790
Client.__init__(self, *args, **kwargs)
712
1791
# Only now, when this client is initialized, can it show up on
713
1792
# the D-Bus
714
self.dbus_object_path = (dbus.ObjectPath
715
(u"/clients/"
716
+ self.name.replace(u".", u"_")))
1793
client_object_name = str(self.name).translate(
1794
{ord("."): ord("_"),
1795
ord("-"): ord("_")})
1796
self.dbus_object_path = dbus.ObjectPath(
1797
"/clients/" + client_object_name)
717
1798
DBusObjectWithProperties.__init__(self, self.bus,
718
1799
self.dbus_object_path)
719
720
def _get_approvals_pending(self):
721
return self._approvals_pending
722
def _set_approvals_pending(self, value):
723
old_value = self._approvals_pending
724
self._approvals_pending = value
725
bval = bool(value)
726
if (hasattr(self, "dbus_object_path")
727
and bval is not bool(old_value)):
728
dbus_bool = dbus.Boolean(bval, variant_level=1)
729
self.PropertyChanged(dbus.String(u"ApprovalPending"),
730
dbus_bool)
731
732
approvals_pending = property(_get_approvals_pending,
733
_set_approvals_pending)
734
del _get_approvals_pending, _set_approvals_pending
735
736
@staticmethod
737
def _datetime_to_dbus(dt, variant_level=0):
738
"""Convert a UTC datetime.datetime() to a D-Bus type."""
739
return dbus.String(dt.isoformat(),
740
variant_level=variant_level)
741
742
def enable(self):
743
oldstate = getattr(self, u"enabled", False)
744
r = Client.enable(self)
745
if oldstate != self.enabled:
746
# Emit D-Bus signals
747
self.PropertyChanged(dbus.String(u"Enabled"),
748
dbus.Boolean(True, variant_level=1))
749
self.PropertyChanged(
750
dbus.String(u"LastEnabled"),
751
self._datetime_to_dbus(self.last_enabled,
752
variant_level=1))
753
return r
754
755
def disable(self, quiet = False):
756
oldstate = getattr(self, u"enabled", False)
757
r = Client.disable(self, quiet=quiet)
758
if not quiet and oldstate != self.enabled:
759
# Emit D-Bus signal
760
self.PropertyChanged(dbus.String(u"Enabled"),
761
dbus.Boolean(False, variant_level=1))
762
return r
763
1800
1801
def notifychangeproperty(transform_func, dbus_name,
1802
type_func=lambda x: x,
1803
variant_level=1,
1804
invalidate_only=False,
1805
_interface=_interface):
1806
""" Modify a variable so that it's a property which announces
1807
its changes to DBus.
1808
1809
transform_fun: Function that takes a value and a variant_level
1810
and transforms it to a D-Bus type.
1811
dbus_name: D-Bus name of the variable
1812
type_func: Function that transform the value before sending it
1813
to the D-Bus. Default: no transform
1814
variant_level: D-Bus variant level. Default: 1
1815
"""
1816
attrname = "_{}".format(dbus_name)
1817
1818
def setter(self, value):
1819
if hasattr(self, "dbus_object_path"):
1820
if (not hasattr(self, attrname) or
1821
type_func(getattr(self, attrname, None))
1822
!= type_func(value)):
1823
if invalidate_only:
1824
self.PropertiesChanged(
1825
_interface, dbus.Dictionary(),
1826
dbus.Array((dbus_name, )))
1827
else:
1828
dbus_value = transform_func(
1829
type_func(value),
1830
variant_level=variant_level)
1831
self.PropertyChanged(dbus.String(dbus_name),
1832
dbus_value)
1833
self.PropertiesChanged(
1834
_interface,
1835
dbus.Dictionary({dbus.String(dbus_name):
1836
dbus_value}),
1837
dbus.Array())
1838
setattr(self, attrname, value)
1839
1840
return property(lambda self: getattr(self, attrname), setter)
1841
1842
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1843
approvals_pending = notifychangeproperty(dbus.Boolean,
1844
"ApprovalPending",
1845
type_func=bool)
1846
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1847
last_enabled = notifychangeproperty(datetime_to_dbus,
1848
"LastEnabled")
1849
checker = notifychangeproperty(
1850
dbus.Boolean, "CheckerRunning",
1851
type_func=lambda checker: checker is not None)
1852
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1853
"LastCheckedOK")
1854
last_checker_status = notifychangeproperty(dbus.Int16,
1855
"LastCheckerStatus")
1856
last_approval_request = notifychangeproperty(
1857
datetime_to_dbus, "LastApprovalRequest")
1858
approved_by_default = notifychangeproperty(dbus.Boolean,
1859
"ApprovedByDefault")
1860
approval_delay = notifychangeproperty(
1861
dbus.UInt64, "ApprovalDelay",
1862
type_func=lambda td: td.total_seconds() * 1000)
1863
approval_duration = notifychangeproperty(
1864
dbus.UInt64, "ApprovalDuration",
1865
type_func=lambda td: td.total_seconds() * 1000)
1866
host = notifychangeproperty(dbus.String, "Host")
1867
timeout = notifychangeproperty(
1868
dbus.UInt64, "Timeout",
1869
type_func=lambda td: td.total_seconds() * 1000)
1870
extended_timeout = notifychangeproperty(
1871
dbus.UInt64, "ExtendedTimeout",
1872
type_func=lambda td: td.total_seconds() * 1000)
1873
interval = notifychangeproperty(
1874
dbus.UInt64, "Interval",
1875
type_func=lambda td: td.total_seconds() * 1000)
1876
checker_command = notifychangeproperty(dbus.String, "Checker")
1877
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1878
invalidate_only=True)
1879
1880
del notifychangeproperty
1881
764
1882
def __del__(self, *args, **kwargs):
765
1883
try:
766
1884
self.remove_from_connection()
767
1885
except LookupError:
768
1886
pass
769
if hasattr(DBusObjectWithProperties, u"__del__"):
1887
if hasattr(DBusObjectWithProperties, "__del__"):
770
1888
DBusObjectWithProperties.__del__(self, *args, **kwargs)
771
1889
Client.__del__(self, *args, **kwargs)
772
773
def checker_callback(self, pid, condition, command,
774
*args, **kwargs):
775
self.checker_callback_tag = None
776
self.checker = None
777
# Emit D-Bus signal
778
self.PropertyChanged(dbus.String(u"CheckerRunning"),
779
dbus.Boolean(False, variant_level=1))
780
if os.WIFEXITED(condition):
781
exitstatus = os.WEXITSTATUS(condition)
1890
1891
def checker_callback(self, source, condition,
1892
connection, command, *args, **kwargs):
1893
ret = Client.checker_callback(self, source, condition,
1894
connection, command, *args,
1895
**kwargs)
1896
exitstatus = self.last_checker_status
1897
if exitstatus >= 0:
782
1898
# Emit D-Bus signal
783
1899
self.CheckerCompleted(dbus.Int16(exitstatus),
784
dbus.Int64(condition),
1900
# This is specific to GNU libC
1901
dbus.Int64(exitstatus << 8),
785
1902
dbus.String(command))
786
1903
else:
787
1904
# Emit D-Bus signal
788
1905
self.CheckerCompleted(dbus.Int16(-1),
789
dbus.Int64(condition),
1906
dbus.Int64(
1907
# This is specific to GNU libC
1908
(exitstatus << 8)
1909
| self.last_checker_signal),
790
1910
dbus.String(command))
791
792
return Client.checker_callback(self, pid, condition, command,
793
*args, **kwargs)
794
795
def checked_ok(self, *args, **kwargs):
796
r = Client.checked_ok(self, *args, **kwargs)
797
# Emit D-Bus signal
798
self.PropertyChanged(
799
dbus.String(u"LastCheckedOK"),
800
(self._datetime_to_dbus(self.last_checked_ok,
801
variant_level=1)))
802
return r
803
1911
return ret
1912
804
1913
def start_checker(self, *args, **kwargs):
805
old_checker = self.checker
806
if self.checker is not None:
807
old_checker_pid = self.checker.pid
808
else:
809
old_checker_pid = None
1914
old_checker_pid = getattr(self.checker, "pid", None)
810
1915
r = Client.start_checker(self, *args, **kwargs)
811
1916
# Only if new checker process was started
812
1917
if (self.checker is not None
813
1918
and old_checker_pid != self.checker.pid):
814
1919
# Emit D-Bus signal
815
1920
self.CheckerStarted(self.current_checker_command)
816
self.PropertyChanged(
817
dbus.String(u"CheckerRunning"),
818
dbus.Boolean(True, variant_level=1))
819
return r
820
821
def stop_checker(self, *args, **kwargs):
822
old_checker = getattr(self, u"checker", None)
823
r = Client.stop_checker(self, *args, **kwargs)
824
if (old_checker is not None
825
and getattr(self, u"checker", None) is None):
826
self.PropertyChanged(dbus.String(u"CheckerRunning"),
827
dbus.Boolean(False, variant_level=1))
828
1921
return r
829
1922
830
1923
def _reset_approved(self):
831
self._approved = None
1924
self.approved = None
832
1925
return False
833
1926
834
1927
def approve(self, value=True):
1928
self.approved = value
1929
GLib.timeout_add(int(self.approval_duration.total_seconds()
1930
* 1000), self._reset_approved)
835
1931
self.send_changedstate()
836
self._approved = value
837
gobject.timeout_add(self._timedelta_to_milliseconds
838
(self.approval_duration),
839
self._reset_approved)
840
841
842
## D-Bus methods, signals & properties
843
_interface = u"se.bsnet.fukt.Mandos.Client"
844
845
## Signals
846
1932
1933
# D-Bus methods, signals & properties
1934
1935
# Interfaces
1936
1937
# Signals
1938
847
1939
# CheckerCompleted - signal
848
@dbus.service.signal(_interface, signature=u"nxs")
1940
@dbus.service.signal(_interface, signature="nxs")
849
1941
def CheckerCompleted(self, exitcode, waitstatus, command):
850
1942
"D-Bus signal"
851
1943
pass
852
1944
853
1945
# CheckerStarted - signal
854
@dbus.service.signal(_interface, signature=u"s")
1946
@dbus.service.signal(_interface, signature="s")
855
1947
def CheckerStarted(self, command):
856
1948
"D-Bus signal"
857
1949
pass
858
1950
859
1951
# PropertyChanged - signal
860
@dbus.service.signal(_interface, signature=u"sv")
1952
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1953
@dbus.service.signal(_interface, signature="sv")
861
1954
def PropertyChanged(self, property, value):
862
1955
"D-Bus signal"
863
1956
pass
864
1957
865
1958
# GotSecret - signal
866
1959
@dbus.service.signal(_interface)
867
1960
def GotSecret(self):
870
1963
server to mandos-client
871
1964
"""
872
1965
pass
873
1966
874
1967
# Rejected - signal
875
@dbus.service.signal(_interface, signature=u"s")
1968
@dbus.service.signal(_interface, signature="s")
876
1969
def Rejected(self, reason):
877
1970
"D-Bus signal"
878
1971
pass
879
1972
880
1973
# NeedApproval - signal
881
@dbus.service.signal(_interface, signature=u"tb")
1974
@dbus.service.signal(_interface, signature="tb")
882
1975
def NeedApproval(self, timeout, default):
883
1976
"D-Bus signal"
884
pass
885
886
## Methods
1977
return self.need_approval()
1978
1979
# Methods
887
1980
888
1981
# Approve - method
889
@dbus.service.method(_interface, in_signature=u"b")
1982
@dbus.service.method(_interface, in_signature="b")
890
1983
def Approve(self, value):
891
1984
self.approve(value)
892
1985
893
1986
# CheckedOK - method
894
1987
@dbus.service.method(_interface)
895
1988
def CheckedOK(self):
896
return self.checked_ok()
897
1989
self.checked_ok()
1990
898
1991
# Enable - method
1992
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
899
1993
@dbus.service.method(_interface)
900
1994
def Enable(self):
901
1995
"D-Bus method"
902
1996
self.enable()
903
1997
904
1998
# StartChecker - method
1999
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
905
2000
@dbus.service.method(_interface)
906
2001
def StartChecker(self):
907
2002
"D-Bus method"
908
2003
self.start_checker()
909
2004
910
2005
# Disable - method
2006
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
911
2007
@dbus.service.method(_interface)
912
2008
def Disable(self):
913
2009
"D-Bus method"
914
2010
self.disable()
915
2011
916
2012
# StopChecker - method
2013
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
917
2014
@dbus.service.method(_interface)
918
2015
def StopChecker(self):
919
2016
self.stop_checker()
920
921
## Properties
922
2017
2018
# Properties
2019
923
2020
# ApprovalPending - property
924
@dbus_service_property(_interface, signature=u"b", access=u"read")
2021
@dbus_service_property(_interface, signature="b", access="read")
925
2022
def ApprovalPending_dbus_property(self):
926
2023
return dbus.Boolean(bool(self.approvals_pending))
927
2024
928
2025
# ApprovedByDefault - property
929
@dbus_service_property(_interface, signature=u"b",
930
access=u"readwrite")
2026
@dbus_service_property(_interface,
2027
signature="b",
2028
access="readwrite")
931
2029
def ApprovedByDefault_dbus_property(self, value=None):
932
2030
if value is None: # get
933
2031
return dbus.Boolean(self.approved_by_default)
934
2032
self.approved_by_default = bool(value)
935
# Emit D-Bus signal
936
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
937
dbus.Boolean(value, variant_level=1))
938
2033
939
2034
# ApprovalDelay - property
940
@dbus_service_property(_interface, signature=u"t",
941
access=u"readwrite")
2035
@dbus_service_property(_interface,
2036
signature="t",
2037
access="readwrite")
942
2038
def ApprovalDelay_dbus_property(self, value=None):
943
2039
if value is None: # get
944
return dbus.UInt64(self.approval_delay_milliseconds())
2040
return dbus.UInt64(self.approval_delay.total_seconds()
2041
* 1000)
945
2042
self.approval_delay = datetime.timedelta(0, 0, 0, value)
946
# Emit D-Bus signal
947
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
948
dbus.UInt64(value, variant_level=1))
949
2043
950
2044
# ApprovalDuration - property
951
@dbus_service_property(_interface, signature=u"t",
952
access=u"readwrite")
2045
@dbus_service_property(_interface,
2046
signature="t",
2047
access="readwrite")
953
2048
def ApprovalDuration_dbus_property(self, value=None):
954
2049
if value is None: # get
955
return dbus.UInt64(self._timedelta_to_milliseconds(
956
self.approval_duration))
2050
return dbus.UInt64(self.approval_duration.total_seconds()
2051
* 1000)
957
2052
self.approval_duration = datetime.timedelta(0, 0, 0, value)
958
# Emit D-Bus signal
959
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
960
dbus.UInt64(value, variant_level=1))
961
2053
962
2054
# Name - property
963
@dbus_service_property(_interface, signature=u"s", access=u"read")
2055
@dbus_annotations(
2056
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2057
@dbus_service_property(_interface, signature="s", access="read")
964
2058
def Name_dbus_property(self):
965
2059
return dbus.String(self.name)
966
2060
2061
# KeyID - property
2062
@dbus_annotations(
2063
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2064
@dbus_service_property(_interface, signature="s", access="read")
2065
def KeyID_dbus_property(self):
2066
return dbus.String(self.key_id)
2067
967
2068
# Fingerprint - property
968
@dbus_service_property(_interface, signature=u"s", access=u"read")
2069
@dbus_annotations(
2070
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2071
@dbus_service_property(_interface, signature="s", access="read")
969
2072
def Fingerprint_dbus_property(self):
970
2073
return dbus.String(self.fingerprint)
971
2074
972
2075
# Host - property
973
@dbus_service_property(_interface, signature=u"s",
974
access=u"readwrite")
2076
@dbus_service_property(_interface,
2077
signature="s",
2078
access="readwrite")
975
2079
def Host_dbus_property(self, value=None):
976
2080
if value is None: # get
977
2081
return dbus.String(self.host)
978
self.host = value
979
# Emit D-Bus signal
980
self.PropertyChanged(dbus.String(u"Host"),
981
dbus.String(value, variant_level=1))
982
2082
self.host = str(value)
2083
983
2084
# Created - property
984
@dbus_service_property(_interface, signature=u"s", access=u"read")
2085
@dbus_annotations(
2086
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2087
@dbus_service_property(_interface, signature="s", access="read")
985
2088
def Created_dbus_property(self):
986
return dbus.String(self._datetime_to_dbus(self.created))
987
2089
return datetime_to_dbus(self.created)
2090
988
2091
# LastEnabled - property
989
@dbus_service_property(_interface, signature=u"s", access=u"read")
2092
@dbus_service_property(_interface, signature="s", access="read")
990
2093
def LastEnabled_dbus_property(self):
991
if self.last_enabled is None:
992
return dbus.String(u"")
993
return dbus.String(self._datetime_to_dbus(self.last_enabled))
994
2094
return datetime_to_dbus(self.last_enabled)
2095
995
2096
# Enabled - property
996
@dbus_service_property(_interface, signature=u"b",
997
access=u"readwrite")
2097
@dbus_service_property(_interface,
2098
signature="b",
2099
access="readwrite")
998
2100
def Enabled_dbus_property(self, value=None):
999
2101
if value is None: # get
1000
2102
return dbus.Boolean(self.enabled)
1002
2104
self.enable()
1003
2105
else:
1004
2106
self.disable()
1005
2107
1006
2108
# LastCheckedOK - property
1007
@dbus_service_property(_interface, signature=u"s",
1008
access=u"readwrite")
2109
@dbus_service_property(_interface,
2110
signature="s",
2111
access="readwrite")
1009
2112
def LastCheckedOK_dbus_property(self, value=None):
1010
2113
if value is not None:
1011
2114
self.checked_ok()
1012
2115
return
1013
if self.last_checked_ok is None:
1014
return dbus.String(u"")
1015
return dbus.String(self._datetime_to_dbus(self
1016
.last_checked_ok))
1017
2116
return datetime_to_dbus(self.last_checked_ok)
2117
2118
# LastCheckerStatus - property
2119
@dbus_service_property(_interface, signature="n", access="read")
2120
def LastCheckerStatus_dbus_property(self):
2121
return dbus.Int16(self.last_checker_status)
2122
2123
# Expires - property
2124
@dbus_service_property(_interface, signature="s", access="read")
2125
def Expires_dbus_property(self):
2126
return datetime_to_dbus(self.expires)
2127
2128
# LastApprovalRequest - property
2129
@dbus_service_property(_interface, signature="s", access="read")
2130
def LastApprovalRequest_dbus_property(self):
2131
return datetime_to_dbus(self.last_approval_request)
2132
1018
2133
# Timeout - property
1019
@dbus_service_property(_interface, signature=u"t",
1020
access=u"readwrite")
2134
@dbus_service_property(_interface,
2135
signature="t",
2136
access="readwrite")
1021
2137
def Timeout_dbus_property(self, value=None):
1022
2138
if value is None: # get
1023
return dbus.UInt64(self.timeout_milliseconds())
2139
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2140
old_timeout = self.timeout
1024
2141
self.timeout = datetime.timedelta(0, 0, 0, value)
1025
# Emit D-Bus signal
1026
self.PropertyChanged(dbus.String(u"Timeout"),
1027
dbus.UInt64(value, variant_level=1))
1028
if getattr(self, u"disable_initiator_tag", None) is None:
1029
return
1030
# Reschedule timeout
1031
gobject.source_remove(self.disable_initiator_tag)
1032
self.disable_initiator_tag = None
1033
time_to_die = (self.
1034
_timedelta_to_milliseconds((self
1035
.last_checked_ok
1036
+ self.timeout)
1037
- datetime.datetime
1038
.utcnow()))
1039
if time_to_die <= 0:
1040
# The timeout has passed
1041
self.disable()
1042
else:
1043
self.disable_initiator_tag = (gobject.timeout_add
1044
(time_to_die, self.disable))
1045
2142
# Reschedule disabling
2143
if self.enabled:
2144
now = datetime.datetime.utcnow()
2145
self.expires += self.timeout - old_timeout
2146
if self.expires <= now:
2147
# The timeout has passed
2148
self.disable()
2149
else:
2150
if (getattr(self, "disable_initiator_tag", None)
2151
is None):
2152
return
2153
GLib.source_remove(self.disable_initiator_tag)
2154
self.disable_initiator_tag = GLib.timeout_add(
2155
int((self.expires - now).total_seconds() * 1000),
2156
self.disable)
2157
2158
# ExtendedTimeout - property
2159
@dbus_service_property(_interface,
2160
signature="t",
2161
access="readwrite")
2162
def ExtendedTimeout_dbus_property(self, value=None):
2163
if value is None: # get
2164
return dbus.UInt64(self.extended_timeout.total_seconds()
2165
* 1000)
2166
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2167
1046
2168
# Interval - property
1047
@dbus_service_property(_interface, signature=u"t",
1048
access=u"readwrite")
2169
@dbus_service_property(_interface,
2170
signature="t",
2171
access="readwrite")
1049
2172
def Interval_dbus_property(self, value=None):
1050
2173
if value is None: # get
1051
return dbus.UInt64(self.interval_milliseconds())
2174
return dbus.UInt64(self.interval.total_seconds() * 1000)
1052
2175
self.interval = datetime.timedelta(0, 0, 0, value)
1053
# Emit D-Bus signal
1054
self.PropertyChanged(dbus.String(u"Interval"),
1055
dbus.UInt64(value, variant_level=1))
1056
if getattr(self, u"checker_initiator_tag", None) is None:
2176
if getattr(self, "checker_initiator_tag", None) is None:
1057
2177
return
1058
# Reschedule checker run
1059
gobject.source_remove(self.checker_initiator_tag)
1060
self.checker_initiator_tag = (gobject.timeout_add
1061
(value, self.start_checker))
1062
self.start_checker() # Start one now, too
2178
if self.enabled:
2179
# Reschedule checker run
2180
GLib.source_remove(self.checker_initiator_tag)
2181
self.checker_initiator_tag = GLib.timeout_add(
2182
value, self.start_checker)
2183
self.start_checker() # Start one now, too
1063
2184
1064
2185
# Checker - property
1065
@dbus_service_property(_interface, signature=u"s",
1066
access=u"readwrite")
2186
@dbus_service_property(_interface,
2187
signature="s",
2188
access="readwrite")
1067
2189
def Checker_dbus_property(self, value=None):
1068
2190
if value is None: # get
1069
2191
return dbus.String(self.checker_command)
1070
self.checker_command = value
1071
# Emit D-Bus signal
1072
self.PropertyChanged(dbus.String(u"Checker"),
1073
dbus.String(self.checker_command,
1074
variant_level=1))
1075
2192
self.checker_command = str(value)
2193
1076
2194
# CheckerRunning - property
1077
@dbus_service_property(_interface, signature=u"b",
1078
access=u"readwrite")
2195
@dbus_service_property(_interface,
2196
signature="b",
2197
access="readwrite")
1079
2198
def CheckerRunning_dbus_property(self, value=None):
1080
2199
if value is None: # get
1081
2200
return dbus.Boolean(self.checker is not None)
1083
2202
self.start_checker()
1084
2203
else:
1085
2204
self.stop_checker()
1086
2205
1087
2206
# ObjectPath - property
1088
@dbus_service_property(_interface, signature=u"o", access=u"read")
2207
@dbus_annotations(
2208
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2209
"org.freedesktop.DBus.Deprecated": "true"})
2210
@dbus_service_property(_interface, signature="o", access="read")
1089
2211
def ObjectPath_dbus_property(self):
1090
return self.dbus_object_path # is already a dbus.ObjectPath
1091
2212
return self.dbus_object_path # is already a dbus.ObjectPath
2213
1092
2214
# Secret = property
1093
@dbus_service_property(_interface, signature=u"ay",
1094
access=u"write", byte_arrays=True)
2215
@dbus_annotations(
2216
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2217
"invalidates"})
2218
@dbus_service_property(_interface,
2219
signature="ay",
2220
access="write",
2221
byte_arrays=True)
1095
2222
def Secret_dbus_property(self, value):
1096
self.secret = str(value)
1097
2223
self.secret = bytes(value)
2224
1098
2225
del _interface
1099
2226
1100
2227
1101
class ProxyClient(object):
1102
def __init__(self, child_pipe, fpr, address):
2228
class ProxyClient:
2229
def __init__(self, child_pipe, key_id, fpr, address):
1103
2230
self._pipe = child_pipe
1104
self._pipe.send(('init', fpr, address))
2231
self._pipe.send(('init', key_id, fpr, address))
1105
2232
if not self._pipe.recv():
1106
raise KeyError()
2233
raise KeyError(key_id or fpr)
1107
2234
1108
2235
def __getattribute__(self, name):
1109
if(name == '_pipe'):
2236
if name == '_pipe':
1110
2237
return super(ProxyClient, self).__getattribute__(name)
1111
2238
self._pipe.send(('getattr', name))
1112
2239
data = self._pipe.recv()
1113
2240
if data[0] == 'data':
1114
2241
return data[1]
1115
2242
if data[0] == 'function':
2243
1116
2244
def func(*args, **kwargs):
1117
2245
self._pipe.send(('funcall', name, args, kwargs))
1118
2246
return self._pipe.recv()[1]
2247
1119
2248
return func
1120
2249
1121
2250
def __setattr__(self, name, value):
1122
if(name == '_pipe'):
2251
if name == '_pipe':
1123
2252
return super(ProxyClient, self).__setattr__(name, value)
1124
2253
self._pipe.send(('setattr', name, value))
1125
2254
1126
2255
1127
2256
class ClientHandler(socketserver.BaseRequestHandler, object):
1128
2257
"""A class to handle client connections.
1129
2258
1130
2259
Instantiated once for each connection to handle it.
1131
2260
Note: This will run in its own forked process."""
1132
2261
1133
2262
def handle(self):
1134
2263
with contextlib.closing(self.server.child_pipe) as child_pipe:
1135
logger.info(u"TCP connection from: %s",
1136
unicode(self.client_address))
1137
logger.debug(u"Pipe FD: %d",
2264
logger.info("TCP connection from: %s",
2265
str(self.client_address))
2266
logger.debug("Pipe FD: %d",
1138
2267
self.server.child_pipe.fileno())
1139
2268
1140
session = (gnutls.connection
1141
.ClientSession(self.request,
1142
gnutls.connection
1143
.X509Credentials()))
1144
1145
# Note: gnutls.connection.X509Credentials is really a
1146
# generic GnuTLS certificate credentials object so long as
1147
# no X.509 keys are added to it. Therefore, we can use it
1148
# here despite using OpenPGP certificates.
1149
1150
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1151
# u"+AES-256-CBC", u"+SHA1",
1152
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1153
# u"+DHE-DSS"))
2269
session = gnutls.ClientSession(self.request)
2270
2271
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2272
# "+AES-256-CBC", "+SHA1",
2273
# "+COMP-NULL", "+CTYPE-OPENPGP",
2274
# "+DHE-DSS"))
1154
2275
# Use a fallback default, since this MUST be set.
1155
2276
priority = self.server.gnutls_priority
1156
2277
if priority is None:
1157
priority = u"NORMAL"
1158
(gnutls.library.functions
1159
.gnutls_priority_set_direct(session._c_object,
1160
priority, None))
2278
priority = "NORMAL"
2279
gnutls.priority_set_direct(session._c_object,
2280
priority.encode("utf-8"),
2281
None)
1161
2282
1162
2283
# Start communication using the Mandos protocol
1163
2284
# Get protocol number
1164
2285
line = self.request.makefile().readline()
1165
logger.debug(u"Protocol version: %r", line)
2286
logger.debug("Protocol version: %r", line)
1166
2287
try:
1167
2288
if int(line.strip().split()[0]) > 1:
1168
raise RuntimeError
1169
except (ValueError, IndexError, RuntimeError), error:
1170
logger.error(u"Unknown protocol version: %s", error)
2289
raise RuntimeError(line)
2290
except (ValueError, IndexError, RuntimeError) as error:
2291
logger.error("Unknown protocol version: %s", error)
1171
2292
return
1172
2293
1173
2294
# Start GnuTLS connection
1174
2295
try:
1175
2296
session.handshake()
1176
except gnutls.errors.GNUTLSError, error:
1177
logger.warning(u"Handshake failed: %s", error)
2297
except gnutls.Error as error:
2298
logger.warning("Handshake failed: %s", error)
1178
2299
# Do not run session.bye() here: the session is not
1179
2300
# established. Just abandon the request.
1180
2301
return
1181
logger.debug(u"Handshake succeeded")
2302
logger.debug("Handshake succeeded")
1182
2303
1183
2304
approval_required = False
1184
2305
try:
1185
try:
1186
fpr = self.fingerprint(self.peer_certificate
1187
(session))
1188
except (TypeError, gnutls.errors.GNUTLSError), error:
1189
logger.warning(u"Bad certificate: %s", error)
1190
return
1191
logger.debug(u"Fingerprint: %s", fpr)
1192
1193
try:
1194
client = ProxyClient(child_pipe, fpr,
2306
if gnutls.has_rawpk:
2307
fpr = b""
2308
try:
2309
key_id = self.key_id(
2310
self.peer_certificate(session))
2311
except (TypeError, gnutls.Error) as error:
2312
logger.warning("Bad certificate: %s", error)
2313
return
2314
logger.debug("Key ID: %s", key_id)
2315
2316
else:
2317
key_id = b""
2318
try:
2319
fpr = self.fingerprint(
2320
self.peer_certificate(session))
2321
except (TypeError, gnutls.Error) as error:
2322
logger.warning("Bad certificate: %s", error)
2323
return
2324
logger.debug("Fingerprint: %s", fpr)
2325
2326
try:
2327
client = ProxyClient(child_pipe, key_id, fpr,
1195
2328
self.client_address)
1196
2329
except KeyError:
1197
2330
return
1198
2331
1199
2332
if client.approval_delay:
1200
2333
delay = client.approval_delay
1201
2334
client.approvals_pending += 1
1202
2335
approval_required = True
1203
2336
1204
2337
while True:
1205
2338
if not client.enabled:
1206
logger.warning(u"Client %s is disabled",
1207
client.name)
2339
logger.info("Client %s is disabled",
2340
client.name)
1208
2341
if self.server.use_dbus:
1209
2342
# Emit D-Bus signal
1210
client.Rejected("Disabled")
2343
client.Rejected("Disabled")
1211
2344
return
1212
1213
if client._approved or not client.approval_delay:
1214
#We are approved or approval is disabled
2345
2346
if client.approved or not client.approval_delay:
2347
# We are approved or approval is disabled
1215
2348
break
1216
elif client._approved is None:
1217
logger.info(u"Client %s needs approval",
2349
elif client.approved is None:
2350
logger.info("Client %s needs approval",
1218
2351
client.name)
1219
2352
if self.server.use_dbus:
1220
2353
# Emit D-Bus signal
1221
2354
client.NeedApproval(
1222
client.approval_delay_milliseconds(),
1223
client.approved_by_default)
2355
client.approval_delay.total_seconds()
2356
* 1000, client.approved_by_default)
1224
2357
else:
1225
logger.warning(u"Client %s was not approved",
2358
logger.warning("Client %s was not approved",
1226
2359
client.name)
1227
2360
if self.server.use_dbus:
1228
2361
# Emit D-Bus signal
1229
2362
client.Rejected("Denied")
1230
2363
return
1231
1232
#wait until timeout or approved
1233
#x = float(client._timedelta_to_milliseconds(delay))
2364
2365
# wait until timeout or approved
1234
2366
time = datetime.datetime.now()
1235
2367
client.changedstate.acquire()
1236
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2368
client.changedstate.wait(delay.total_seconds())
1237
2369
client.changedstate.release()
1238
2370
time2 = datetime.datetime.now()
1239
2371
if (time2 - time) >= delay:
1249
2381
break
1250
2382
else:
1251
2383
delay -= time2 - time
1252
1253
sent_size = 0
1254
while sent_size < len(client.secret):
1255
try:
1256
sent = session.send(client.secret[sent_size:])
1257
except (gnutls.errors.GNUTLSError), error:
1258
logger.warning("gnutls send failed")
1259
return
1260
logger.debug(u"Sent: %d, remaining: %d",
1261
sent, len(client.secret)
1262
- (sent_size + sent))
1263
sent_size += sent
1264
1265
logger.info(u"Sending secret to %s", client.name)
1266
# bump the timeout as if seen
1267
client.checked_ok()
2384
2385
try:
2386
session.send(client.secret)
2387
except gnutls.Error as error:
2388
logger.warning("gnutls send failed",
2389
exc_info=error)
2390
return
2391
2392
logger.info("Sending secret to %s", client.name)
2393
# bump the timeout using extended_timeout
2394
client.bump_timeout(client.extended_timeout)
1268
2395
if self.server.use_dbus:
1269
2396
# Emit D-Bus signal
1270
2397
client.GotSecret()
1271
2398
1272
2399
finally:
1273
2400
if approval_required:
1274
2401
client.approvals_pending -= 1
1275
2402
try:
1276
2403
session.bye()
1277
except (gnutls.errors.GNUTLSError), error:
1278
logger.warning("GnuTLS bye failed")
1279
2404
except gnutls.Error as error:
2405
logger.warning("GnuTLS bye failed",
2406
exc_info=error)
2407
1280
2408
@staticmethod
1281
2409
def peer_certificate(session):
1282
"Return the peer's OpenPGP certificate as a bytestring"
1283
# If not an OpenPGP certificate...
1284
if (gnutls.library.functions
1285
.gnutls_certificate_type_get(session._c_object)
1286
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1287
# ...do the normal thing
1288
return session.peer_certificate
2410
"Return the peer's certificate as a bytestring"
2411
try:
2412
cert_type = gnutls.certificate_type_get2(session._c_object,
2413
gnutls.CTYPE_PEERS)
2414
except AttributeError:
2415
cert_type = gnutls.certificate_type_get(session._c_object)
2416
if gnutls.has_rawpk:
2417
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2418
else:
2419
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2420
# If not a valid certificate type...
2421
if cert_type not in valid_cert_types:
2422
logger.info("Cert type %r not in %r", cert_type,
2423
valid_cert_types)
2424
# ...return invalid data
2425
return b""
1289
2426
list_size = ctypes.c_uint(1)
1290
cert_list = (gnutls.library.functions
1291
.gnutls_certificate_get_peers
2427
cert_list = (gnutls.certificate_get_peers
1292
2428
(session._c_object, ctypes.byref(list_size)))
1293
2429
if not bool(cert_list) and list_size.value != 0:
1294
raise gnutls.errors.GNUTLSError(u"error getting peer"
1295
u" certificate")
2430
raise gnutls.Error("error getting peer certificate")
1296
2431
if list_size.value == 0:
1297
2432
return None
1298
2433
cert = cert_list[0]
1299
2434
return ctypes.string_at(cert.data, cert.size)
1300
2435
2436
@staticmethod
2437
def key_id(certificate):
2438
"Convert a certificate bytestring to a hexdigit key ID"
2439
# New GnuTLS "datum" with the public key
2440
datum = gnutls.datum_t(
2441
ctypes.cast(ctypes.c_char_p(certificate),
2442
ctypes.POINTER(ctypes.c_ubyte)),
2443
ctypes.c_uint(len(certificate)))
2444
# XXX all these need to be created in the gnutls "module"
2445
# New empty GnuTLS certificate
2446
pubkey = gnutls.pubkey_t()
2447
gnutls.pubkey_init(ctypes.byref(pubkey))
2448
# Import the raw public key into the certificate
2449
gnutls.pubkey_import(pubkey,
2450
ctypes.byref(datum),
2451
gnutls.X509_FMT_DER)
2452
# New buffer for the key ID
2453
buf = ctypes.create_string_buffer(32)
2454
buf_len = ctypes.c_size_t(len(buf))
2455
# Get the key ID from the raw public key into the buffer
2456
gnutls.pubkey_get_key_id(pubkey,
2457
gnutls.KEYID_USE_SHA256,
2458
ctypes.cast(ctypes.byref(buf),
2459
ctypes.POINTER(ctypes.c_ubyte)),
2460
ctypes.byref(buf_len))
2461
# Deinit the certificate
2462
gnutls.pubkey_deinit(pubkey)
2463
2464
# Convert the buffer to a Python bytestring
2465
key_id = ctypes.string_at(buf, buf_len.value)
2466
# Convert the bytestring to hexadecimal notation
2467
hex_key_id = binascii.hexlify(key_id).upper()
2468
return hex_key_id
2469
1301
2470
@staticmethod
1302
2471
def fingerprint(openpgp):
1303
2472
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1304
2473
# New GnuTLS "datum" with the OpenPGP public key
1305
datum = (gnutls.library.types
1306
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1307
ctypes.POINTER
1308
(ctypes.c_ubyte)),
1309
ctypes.c_uint(len(openpgp))))
2474
datum = gnutls.datum_t(
2475
ctypes.cast(ctypes.c_char_p(openpgp),
2476
ctypes.POINTER(ctypes.c_ubyte)),
2477
ctypes.c_uint(len(openpgp)))
1310
2478
# New empty GnuTLS certificate
1311
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1312
(gnutls.library.functions
1313
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2479
crt = gnutls.openpgp_crt_t()
2480
gnutls.openpgp_crt_init(ctypes.byref(crt))
1314
2481
# Import the OpenPGP public key into the certificate
1315
(gnutls.library.functions
1316
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1317
gnutls.library.constants
1318
.GNUTLS_OPENPGP_FMT_RAW))
2482
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2483
gnutls.OPENPGP_FMT_RAW)
1319
2484
# Verify the self signature in the key
1320
2485
crtverify = ctypes.c_uint()
1321
(gnutls.library.functions
1322
.gnutls_openpgp_crt_verify_self(crt, 0,
1323
ctypes.byref(crtverify)))
2486
gnutls.openpgp_crt_verify_self(crt, 0,
2487
ctypes.byref(crtverify))
1324
2488
if crtverify.value != 0:
1325
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1326
raise (gnutls.errors.CertificateSecurityError
1327
(u"Verify failed"))
2489
gnutls.openpgp_crt_deinit(crt)
2490
raise gnutls.CertificateSecurityError(code
2491
=crtverify.value)
1328
2492
# New buffer for the fingerprint
1329
2493
buf = ctypes.create_string_buffer(20)
1330
2494
buf_len = ctypes.c_size_t()
1331
2495
# Get the fingerprint from the certificate into the buffer
1332
(gnutls.library.functions
1333
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1334
ctypes.byref(buf_len)))
2496
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2497
ctypes.byref(buf_len))
1335
2498
# Deinit the certificate
1336
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2499
gnutls.openpgp_crt_deinit(crt)
1337
2500
# Convert the buffer to a Python bytestring
1338
2501
fpr = ctypes.string_at(buf, buf_len.value)
1339
2502
# Convert the bytestring to hexadecimal notation
1340
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2503
hex_fpr = binascii.hexlify(fpr).upper()
1341
2504
return hex_fpr
1342
2505
1343
2506
1344
class MultiprocessingMixIn(object):
2507
class MultiprocessingMixIn:
1345
2508
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2509
1346
2510
def sub_process_main(self, request, address):
1347
2511
try:
1348
2512
self.finish_request(request, address)
1349
except:
2513
except Exception:
1350
2514
self.handle_error(request, address)
1351
2515
self.close_request(request)
1352
2516
1353
2517
def process_request(self, request, address):
1354
2518
"""Start a new process to process the request."""
1355
multiprocessing.Process(target = self.sub_process_main,
1356
args = (request, address)).start()
1357
1358
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2519
proc = multiprocessing.Process(target=self.sub_process_main,
2520
args=(request, address))
2521
proc.start()
2522
return proc
2523
2524
2525
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1359
2526
""" adds a pipe to the MixIn """
2527
1360
2528
def process_request(self, request, client_address):
1361
2529
"""Overrides and wraps the original process_request().
1362
2530
1363
2531
This function creates a new pipe in self.pipe
1364
2532
"""
1365
2533
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1366
2534
1367
super(MultiprocessingMixInWithPipe,
1368
self).process_request(request, client_address)
2535
proc = MultiprocessingMixIn.process_request(self, request,
2536
client_address)
1369
2537
self.child_pipe.close()
1370
self.add_pipe(parent_pipe)
2538
self.add_pipe(parent_pipe, proc)
1371
2539
1372
def add_pipe(self, parent_pipe):
2540
def add_pipe(self, parent_pipe, proc):
1373
2541
"""Dummy function; override as necessary"""
1374
pass
2542
raise NotImplementedError()
2543
1375
2544
1376
2545
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1377
socketserver.TCPServer, object):
2546
socketserver.TCPServer):
1378
2547
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1379
2548
1380
2549
Attributes:
1381
2550
enabled: Boolean; whether this server is activated yet
1382
2551
interface: None or a network interface name (string)
1383
2552
use_ipv6: Boolean; to use IPv6 or not
1384
2553
"""
2554
1385
2555
def __init__(self, server_address, RequestHandlerClass,
1386
interface=None, use_ipv6=True):
2556
interface=None,
2557
use_ipv6=True,
2558
socketfd=None):
2559
"""If socketfd is set, use that file descriptor instead of
2560
creating a new one with socket.socket().
2561
"""
1387
2562
self.interface = interface
1388
2563
if use_ipv6:
1389
2564
self.address_family = socket.AF_INET6
2565
if socketfd is not None:
2566
# Save the file descriptor
2567
self.socketfd = socketfd
2568
# Save the original socket.socket() function
2569
self.socket_socket = socket.socket
2570
2571
# To implement --socket, we monkey patch socket.socket.
2572
#
2573
# (When socketserver.TCPServer is a new-style class, we
2574
# could make self.socket into a property instead of monkey
2575
# patching socket.socket.)
2576
#
2577
# Create a one-time-only replacement for socket.socket()
2578
@functools.wraps(socket.socket)
2579
def socket_wrapper(*args, **kwargs):
2580
# Restore original function so subsequent calls are
2581
# not affected.
2582
socket.socket = self.socket_socket
2583
del self.socket_socket
2584
# This time only, return a new socket object from the
2585
# saved file descriptor.
2586
return socket.fromfd(self.socketfd, *args, **kwargs)
2587
# Replace socket.socket() function with wrapper
2588
socket.socket = socket_wrapper
2589
# The socketserver.TCPServer.__init__ will call
2590
# socket.socket(), which might be our replacement,
2591
# socket_wrapper(), if socketfd was set.
1390
2592
socketserver.TCPServer.__init__(self, server_address,
1391
2593
RequestHandlerClass)
2594
1392
2595
def server_bind(self):
1393
2596
"""This overrides the normal server_bind() function
1394
2597
to bind to an interface if one was specified, and also NOT to
1395
2598
bind to an address or port if they were not specified."""
2599
global SO_BINDTODEVICE
1396
2600
if self.interface is not None:
1397
2601
if SO_BINDTODEVICE is None:
1398
logger.error(u"SO_BINDTODEVICE does not exist;"
1399
u" cannot bind to interface %s",
1400
self.interface)
1401
else:
1402
try:
1403
self.socket.setsockopt(socket.SOL_SOCKET,
1404
SO_BINDTODEVICE,
1405
str(self.interface
1406
+ u'\0'))
1407
except socket.error, error:
1408
if error[0] == errno.EPERM:
1409
logger.error(u"No permission to"
1410
u" bind to interface %s",
1411
self.interface)
1412
elif error[0] == errno.ENOPROTOOPT:
1413
logger.error(u"SO_BINDTODEVICE not available;"
1414
u" cannot bind to interface %s",
1415
self.interface)
1416
else:
1417
raise
2602
# Fall back to a hard-coded value which seems to be
2603
# common enough.
2604
logger.warning("SO_BINDTODEVICE not found, trying 25")
2605
SO_BINDTODEVICE = 25
2606
try:
2607
self.socket.setsockopt(
2608
socket.SOL_SOCKET, SO_BINDTODEVICE,
2609
(self.interface + "\0").encode("utf-8"))
2610
except socket.error as error:
2611
if error.errno == errno.EPERM:
2612
logger.error("No permission to bind to"
2613
" interface %s", self.interface)
2614
elif error.errno == errno.ENOPROTOOPT:
2615
logger.error("SO_BINDTODEVICE not available;"
2616
" cannot bind to interface %s",
2617
self.interface)
2618
elif error.errno == errno.ENODEV:
2619
logger.error("Interface %s does not exist,"
2620
" cannot bind", self.interface)
2621
else:
2622
raise
1418
2623
# Only bind(2) the socket if we really need to.
1419
2624
if self.server_address[0] or self.server_address[1]:
2625
if self.server_address[1]:
2626
self.allow_reuse_address = True
1420
2627
if not self.server_address[0]:
1421
2628
if self.address_family == socket.AF_INET6:
1422
any_address = u"::" # in6addr_any
2629
any_address = "::" # in6addr_any
1423
2630
else:
1424
any_address = socket.INADDR_ANY
2631
any_address = "0.0.0.0" # INADDR_ANY
1425
2632
self.server_address = (any_address,
1426
2633
self.server_address[1])
1427
2634
elif not self.server_address[1]:
1428
self.server_address = (self.server_address[0],
1429
0)
2635
self.server_address = (self.server_address[0], 0)
1430
2636
# if self.interface:
1431
2637
# self.server_address = (self.server_address[0],
1432
2638
# 0, # port
1438
2644
1439
2645
class MandosServer(IPv6_TCPServer):
1440
2646
"""Mandos server.
1441
2647
1442
2648
Attributes:
1443
2649
clients: set of Client objects
1444
2650
gnutls_priority GnuTLS priority string
1445
2651
use_dbus: Boolean; to emit D-Bus signals or not
1446
1447
Assumes a gobject.MainLoop event loop.
2652
2653
Assumes a GLib.MainLoop event loop.
1448
2654
"""
2655
1449
2656
def __init__(self, server_address, RequestHandlerClass,
1450
interface=None, use_ipv6=True, clients=None,
1451
gnutls_priority=None, use_dbus=True):
2657
interface=None,
2658
use_ipv6=True,
2659
clients=None,
2660
gnutls_priority=None,
2661
use_dbus=True,
2662
socketfd=None):
1452
2663
self.enabled = False
1453
2664
self.clients = clients
1454
2665
if self.clients is None:
1455
self.clients = set()
2666
self.clients = {}
1456
2667
self.use_dbus = use_dbus
1457
2668
self.gnutls_priority = gnutls_priority
1458
2669
IPv6_TCPServer.__init__(self, server_address,
1459
2670
RequestHandlerClass,
1460
interface = interface,
1461
use_ipv6 = use_ipv6)
2671
interface=interface,
2672
use_ipv6=use_ipv6,
2673
socketfd=socketfd)
2674
1462
2675
def server_activate(self):
1463
2676
if self.enabled:
1464
2677
return socketserver.TCPServer.server_activate(self)
2678
1465
2679
def enable(self):
1466
2680
self.enabled = True
1467
def add_pipe(self, parent_pipe):
2681
2682
def add_pipe(self, parent_pipe, proc):
1468
2683
# Call "handle_ipc" for both data and EOF events
1469
gobject.io_add_watch(parent_pipe.fileno(),
1470
gobject.IO_IN | gobject.IO_HUP,
1471
functools.partial(self.handle_ipc,
1472
parent_pipe = parent_pipe))
1473
1474
def handle_ipc(self, source, condition, parent_pipe=None,
2684
GLib.io_add_watch(
2685
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2686
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2687
functools.partial(self.handle_ipc,
2688
parent_pipe=parent_pipe,
2689
proc=proc))
2690
2691
def handle_ipc(self, source, condition,
2692
parent_pipe=None,
2693
proc=None,
1475
2694
client_object=None):
1476
condition_names = {
1477
gobject.IO_IN: u"IN", # There is data to read.
1478
gobject.IO_OUT: u"OUT", # Data can be written (without
1479
# blocking).
1480
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1481
gobject.IO_ERR: u"ERR", # Error condition.
1482
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1483
# broken, usually for pipes and
1484
# sockets).
1485
}
1486
conditions_string = ' | '.join(name
1487
for cond, name in
1488
condition_names.iteritems()
1489
if cond & condition)
1490
# error or the other end of multiprocessing.Pipe has closed
1491
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2695
# error, or the other end of multiprocessing.Pipe has closed
2696
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2697
# Wait for other process to exit
2698
proc.join()
1492
2699
return False
1493
2700
1494
2701
# Read a request from the child
1495
2702
request = parent_pipe.recv()
1496
2703
command = request[0]
1497
2704
1498
2705
if command == 'init':
1499
fpr = request[1]
1500
address = request[2]
1501
1502
for c in self.clients:
1503
if c.fingerprint == fpr:
2706
key_id = request[1].decode("ascii")
2707
fpr = request[2].decode("ascii")
2708
address = request[3]
2709
2710
for c in self.clients.values():
2711
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2712
continue
2713
if key_id and c.key_id == key_id:
2714
client = c
2715
break
2716
if fpr and c.fingerprint == fpr:
1504
2717
client = c
1505
2718
break
1506
2719
else:
1507
logger.warning(u"Client not found for fingerprint: %s, ad"
1508
u"dress: %s", fpr, address)
2720
logger.info("Client not found for key ID: %s, address"
2721
": %s", key_id or fpr, address)
1509
2722
if self.use_dbus:
1510
2723
# Emit D-Bus signal
1511
mandos_dbus_service.ClientNotFound(fpr, address)
2724
mandos_dbus_service.ClientNotFound(key_id or fpr,
2725
address[0])
1512
2726
parent_pipe.send(False)
1513
2727
return False
1514
1515
gobject.io_add_watch(parent_pipe.fileno(),
1516
gobject.IO_IN | gobject.IO_HUP,
1517
functools.partial(self.handle_ipc,
1518
parent_pipe = parent_pipe,
1519
client_object = client))
2728
2729
GLib.io_add_watch(
2730
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2731
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2732
functools.partial(self.handle_ipc,
2733
parent_pipe=parent_pipe,
2734
proc=proc,
2735
client_object=client))
1520
2736
parent_pipe.send(True)
1521
# remove the old hook in favor of the new above hook on same fileno
2737
# remove the old hook in favor of the new above hook on
2738
# same fileno
1522
2739
return False
1523
2740
if command == 'funcall':
1524
2741
funcname = request[1]
1525
2742
args = request[2]
1526
2743
kwargs = request[3]
1527
1528
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2744
2745
parent_pipe.send(('data', getattr(client_object,
2746
funcname)(*args,
2747
**kwargs)))
1529
2748
1530
2749
if command == 'getattr':
1531
2750
attrname = request[1]
1532
if callable(client_object.__getattribute__(attrname)):
1533
parent_pipe.send(('function',))
2751
if isinstance(client_object.__getattribute__(attrname),
2752
collections.Callable):
2753
parent_pipe.send(('function', ))
1534
2754
else:
1535
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1536
2755
parent_pipe.send((
2756
'data', client_object.__getattribute__(attrname)))
2757
1537
2758
if command == 'setattr':
1538
2759
attrname = request[1]
1539
2760
value = request[2]
1542
2763
return True
1543
2764
1544
2765
2766
def rfc3339_duration_to_delta(duration):
2767
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2768
2769
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2770
True
2771
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2772
True
2773
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2774
True
2775
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2776
True
2777
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2778
True
2779
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2780
True
2781
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2782
True
2783
"""
2784
2785
# Parsing an RFC 3339 duration with regular expressions is not
2786
# possible - there would have to be multiple places for the same
2787
# values, like seconds. The current code, while more esoteric, is
2788
# cleaner without depending on a parsing library. If Python had a
2789
# built-in library for parsing we would use it, but we'd like to
2790
# avoid excessive use of external libraries.
2791
2792
# New type for defining tokens, syntax, and semantics all-in-one
2793
Token = collections.namedtuple("Token", (
2794
"regexp", # To match token; if "value" is not None, must have
2795
# a "group" containing digits
2796
"value", # datetime.timedelta or None
2797
"followers")) # Tokens valid after this token
2798
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2799
# the "duration" ABNF definition in RFC 3339, Appendix A.
2800
token_end = Token(re.compile(r"$"), None, frozenset())
2801
token_second = Token(re.compile(r"(\d+)S"),
2802
datetime.timedelta(seconds=1),
2803
frozenset((token_end, )))
2804
token_minute = Token(re.compile(r"(\d+)M"),
2805
datetime.timedelta(minutes=1),
2806
frozenset((token_second, token_end)))
2807
token_hour = Token(re.compile(r"(\d+)H"),
2808
datetime.timedelta(hours=1),
2809
frozenset((token_minute, token_end)))
2810
token_time = Token(re.compile(r"T"),
2811
None,
2812
frozenset((token_hour, token_minute,
2813
token_second)))
2814
token_day = Token(re.compile(r"(\d+)D"),
2815
datetime.timedelta(days=1),
2816
frozenset((token_time, token_end)))
2817
token_month = Token(re.compile(r"(\d+)M"),
2818
datetime.timedelta(weeks=4),
2819
frozenset((token_day, token_end)))
2820
token_year = Token(re.compile(r"(\d+)Y"),
2821
datetime.timedelta(weeks=52),
2822
frozenset((token_month, token_end)))
2823
token_week = Token(re.compile(r"(\d+)W"),
2824
datetime.timedelta(weeks=1),
2825
frozenset((token_end, )))
2826
token_duration = Token(re.compile(r"P"), None,
2827
frozenset((token_year, token_month,
2828
token_day, token_time,
2829
token_week)))
2830
# Define starting values:
2831
# Value so far
2832
value = datetime.timedelta()
2833
found_token = None
2834
# Following valid tokens
2835
followers = frozenset((token_duration, ))
2836
# String left to parse
2837
s = duration
2838
# Loop until end token is found
2839
while found_token is not token_end:
2840
# Search for any currently valid tokens
2841
for token in followers:
2842
match = token.regexp.match(s)
2843
if match is not None:
2844
# Token found
2845
if token.value is not None:
2846
# Value found, parse digits
2847
factor = int(match.group(1), 10)
2848
# Add to value so far
2849
value += factor * token.value
2850
# Strip token from string
2851
s = token.regexp.sub("", s, 1)
2852
# Go to found token
2853
found_token = token
2854
# Set valid next tokens
2855
followers = found_token.followers
2856
break
2857
else:
2858
# No currently valid tokens were found
2859
raise ValueError("Invalid RFC 3339 duration: {!r}"
2860
.format(duration))
2861
# End token found
2862
return value
2863
2864
1545
2865
def string_to_delta(interval):
1546
2866
"""Parse a string and return a datetime.timedelta
1547
1548
>>> string_to_delta(u'7d')
1549
datetime.timedelta(7)
1550
>>> string_to_delta(u'60s')
1551
datetime.timedelta(0, 60)
1552
>>> string_to_delta(u'60m')
1553
datetime.timedelta(0, 3600)
1554
>>> string_to_delta(u'24h')
1555
datetime.timedelta(1)
1556
>>> string_to_delta(u'1w')
1557
datetime.timedelta(7)
1558
>>> string_to_delta(u'5m 30s')
1559
datetime.timedelta(0, 330)
2867
2868
>>> string_to_delta('7d') == datetime.timedelta(7)
2869
True
2870
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2871
True
2872
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2873
True
2874
>>> string_to_delta('24h') == datetime.timedelta(1)
2875
True
2876
>>> string_to_delta('1w') == datetime.timedelta(7)
2877
True
2878
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2879
True
1560
2880
"""
2881
2882
try:
2883
return rfc3339_duration_to_delta(interval)
2884
except ValueError:
2885
pass
2886
1561
2887
timevalue = datetime.timedelta(0)
1562
2888
for s in interval.split():
1563
2889
try:
1564
suffix = unicode(s[-1])
2890
suffix = s[-1]
1565
2891
value = int(s[:-1])
1566
if suffix == u"d":
2892
if suffix == "d":
1567
2893
delta = datetime.timedelta(value)
1568
elif suffix == u"s":
2894
elif suffix == "s":
1569
2895
delta = datetime.timedelta(0, value)
1570
elif suffix == u"m":
2896
elif suffix == "m":
1571
2897
delta = datetime.timedelta(0, 0, 0, 0, value)
1572
elif suffix == u"h":
2898
elif suffix == "h":
1573
2899
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1574
elif suffix == u"w":
2900
elif suffix == "w":
1575
2901
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1576
2902
else:
1577
raise ValueError(u"Unknown suffix %r" % suffix)
1578
except (ValueError, IndexError), e:
1579
raise ValueError(e.message)
2903
raise ValueError("Unknown suffix {!r}".format(suffix))
2904
except IndexError as e:
2905
raise ValueError(*(e.args))
1580
2906
timevalue += delta
1581
2907
return timevalue
1582
2908
1583
2909
1584
def if_nametoindex(interface):
1585
"""Call the C function if_nametoindex(), or equivalent
1586
1587
Note: This function cannot accept a unicode string."""
1588
global if_nametoindex
1589
try:
1590
if_nametoindex = (ctypes.cdll.LoadLibrary
1591
(ctypes.util.find_library(u"c"))
1592
.if_nametoindex)
1593
except (OSError, AttributeError):
1594
logger.warning(u"Doing if_nametoindex the hard way")
1595
def if_nametoindex(interface):
1596
"Get an interface index the hard way, i.e. using fcntl()"
1597
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1598
with contextlib.closing(socket.socket()) as s:
1599
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1600
struct.pack(str(u"16s16x"),
1601
interface))
1602
interface_index = struct.unpack(str(u"I"),
1603
ifreq[16:20])[0]
1604
return interface_index
1605
return if_nametoindex(interface)
1606
1607
1608
def daemon(nochdir = False, noclose = False):
2910
def daemon(nochdir=False, noclose=False):
1609
2911
"""See daemon(3). Standard BSD Unix function.
1610
2912
1611
2913
This should really exist as os.daemon, but it doesn't (yet)."""
1612
2914
if os.fork():
1613
2915
sys.exit()
1614
2916
os.setsid()
1615
2917
if not nochdir:
1616
os.chdir(u"/")
2918
os.chdir("/")
1617
2919
if os.fork():
1618
2920
sys.exit()
1619
2921
if not noclose:
1620
2922
# Close all standard open file descriptors
1621
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2923
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1622
2924
if not stat.S_ISCHR(os.fstat(null).st_mode):
1623
2925
raise OSError(errno.ENODEV,
1624
u"%s not a character device"
1625
% os.path.devnull)
2926
"{} not a character device"
2927
.format(os.devnull))
1626
2928
os.dup2(null, sys.stdin.fileno())
1627
2929
os.dup2(null, sys.stdout.fileno())
1628
2930
os.dup2(null, sys.stderr.fileno())
1631
2933
1632
2934
1633
2935
def main():
1634
2936
1635
2937
##################################################################
1636
2938
# Parsing of options, both command line and config file
1637
1638
parser = optparse.OptionParser(version = "%%prog %s" % version)
1639
parser.add_option("-i", u"--interface", type=u"string",
1640
metavar="IF", help=u"Bind to interface IF")
1641
parser.add_option("-a", u"--address", type=u"string",
1642
help=u"Address to listen for requests on")
1643
parser.add_option("-p", u"--port", type=u"int",
1644
help=u"Port number to receive requests on")
1645
parser.add_option("--check", action=u"store_true",
1646
help=u"Run self-test")
1647
parser.add_option("--debug", action=u"store_true",
1648
help=u"Debug mode; run in foreground and log to"
1649
u" terminal")
1650
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1651
help=u"Debug level for stdout output")
1652
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1653
u" priority string (see GnuTLS documentation)")
1654
parser.add_option("--servicename", type=u"string",
1655
metavar=u"NAME", help=u"Zeroconf service name")
1656
parser.add_option("--configdir", type=u"string",
1657
default=u"/etc/mandos", metavar=u"DIR",
1658
help=u"Directory to search for configuration"
1659
u" files")
1660
parser.add_option("--no-dbus", action=u"store_false",
1661
dest=u"use_dbus", help=u"Do not provide D-Bus"
1662
u" system bus interface")
1663
parser.add_option("--no-ipv6", action=u"store_false",
1664
dest=u"use_ipv6", help=u"Do not use IPv6")
1665
options = parser.parse_args()[0]
1666
1667
if options.check:
1668
import doctest
1669
doctest.testmod()
1670
sys.exit()
1671
2939
2940
parser = argparse.ArgumentParser()
2941
parser.add_argument("-v", "--version", action="version",
2942
version="%(prog)s {}".format(version),
2943
help="show version number and exit")
2944
parser.add_argument("-i", "--interface", metavar="IF",
2945
help="Bind to interface IF")
2946
parser.add_argument("-a", "--address",
2947
help="Address to listen for requests on")
2948
parser.add_argument("-p", "--port", type=int,
2949
help="Port number to receive requests on")
2950
parser.add_argument("--check", action="store_true",
2951
help="Run self-test")
2952
parser.add_argument("--debug", action="store_true",
2953
help="Debug mode; run in foreground and log"
2954
" to terminal", default=None)
2955
parser.add_argument("--debuglevel", metavar="LEVEL",
2956
help="Debug level for stdout output")
2957
parser.add_argument("--priority", help="GnuTLS"
2958
" priority string (see GnuTLS documentation)")
2959
parser.add_argument("--servicename",
2960
metavar="NAME", help="Zeroconf service name")
2961
parser.add_argument("--configdir",
2962
default="/etc/mandos", metavar="DIR",
2963
help="Directory to search for configuration"
2964
" files")
2965
parser.add_argument("--no-dbus", action="store_false",
2966
dest="use_dbus", help="Do not provide D-Bus"
2967
" system bus interface", default=None)
2968
parser.add_argument("--no-ipv6", action="store_false",
2969
dest="use_ipv6", help="Do not use IPv6",
2970
default=None)
2971
parser.add_argument("--no-restore", action="store_false",
2972
dest="restore", help="Do not restore stored"
2973
" state", default=None)
2974
parser.add_argument("--socket", type=int,
2975
help="Specify a file descriptor to a network"
2976
" socket to use instead of creating one")
2977
parser.add_argument("--statedir", metavar="DIR",
2978
help="Directory to save/restore state in")
2979
parser.add_argument("--foreground", action="store_true",
2980
help="Run in foreground", default=None)
2981
parser.add_argument("--no-zeroconf", action="store_false",
2982
dest="zeroconf", help="Do not use Zeroconf",
2983
default=None)
2984
2985
options = parser.parse_args()
2986
1672
2987
# Default values for config file for server-global settings
1673
server_defaults = { u"interface": u"",
1674
u"address": u"",
1675
u"port": u"",
1676
u"debug": u"False",
1677
u"priority":
1678
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1679
u"servicename": u"Mandos",
1680
u"use_dbus": u"True",
1681
u"use_ipv6": u"True",
1682
u"debuglevel": u"",
1683
}
1684
2988
if gnutls.has_rawpk:
2989
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2990
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2991
else:
2992
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2993
":+SIGN-DSA-SHA256")
2994
server_defaults = {"interface": "",
2995
"address": "",
2996
"port": "",
2997
"debug": "False",
2998
"priority": priority,
2999
"servicename": "Mandos",
3000
"use_dbus": "True",
3001
"use_ipv6": "True",
3002
"debuglevel": "",
3003
"restore": "True",
3004
"socket": "",
3005
"statedir": "/var/lib/mandos",
3006
"foreground": "False",
3007
"zeroconf": "True",
3008
}
3009
del priority
3010
1685
3011
# Parse config file for server-global settings
1686
server_config = configparser.SafeConfigParser(server_defaults)
3012
server_config = configparser.ConfigParser(server_defaults)
1687
3013
del server_defaults
1688
server_config.read(os.path.join(options.configdir,
1689
u"mandos.conf"))
1690
# Convert the SafeConfigParser object to a dict
3014
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3015
# Convert the ConfigParser object to a dict
1691
3016
server_settings = server_config.defaults()
1692
3017
# Use the appropriate methods on the non-string config options
1693
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1694
server_settings[option] = server_config.getboolean(u"DEFAULT",
3018
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3019
"foreground", "zeroconf"):
3020
server_settings[option] = server_config.getboolean("DEFAULT",
1695
3021
option)
1696
3022
if server_settings["port"]:
1697
server_settings["port"] = server_config.getint(u"DEFAULT",
1698
u"port")
3023
server_settings["port"] = server_config.getint("DEFAULT",
3024
"port")
3025
if server_settings["socket"]:
3026
server_settings["socket"] = server_config.getint("DEFAULT",
3027
"socket")
3028
# Later, stdin will, and stdout and stderr might, be dup'ed
3029
# over with an opened os.devnull. But we don't want this to
3030
# happen with a supplied network socket.
3031
if 0 <= server_settings["socket"] <= 2:
3032
server_settings["socket"] = os.dup(server_settings
3033
["socket"])
1699
3034
del server_config
1700
3035
1701
3036
# Override the settings from the config file with command line
1702
3037
# options, if set.
1703
for option in (u"interface", u"address", u"port", u"debug",
1704
u"priority", u"servicename", u"configdir",
1705
u"use_dbus", u"use_ipv6", u"debuglevel"):
3038
for option in ("interface", "address", "port", "debug",
3039
"priority", "servicename", "configdir", "use_dbus",
3040
"use_ipv6", "debuglevel", "restore", "statedir",
3041
"socket", "foreground", "zeroconf"):
1706
3042
value = getattr(options, option)
1707
3043
if value is not None:
1708
3044
server_settings[option] = value
1709
3045
del options
1710
3046
# Force all strings to be unicode
1711
3047
for option in server_settings.keys():
1712
if type(server_settings[option]) is str:
1713
server_settings[option] = unicode(server_settings[option])
3048
if isinstance(server_settings[option], bytes):
3049
server_settings[option] = (server_settings[option]
3050
.decode("utf-8"))
3051
# Force all boolean options to be boolean
3052
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3053
"foreground", "zeroconf"):
3054
server_settings[option] = bool(server_settings[option])
3055
# Debug implies foreground
3056
if server_settings["debug"]:
3057
server_settings["foreground"] = True
1714
3058
# Now we have our good server settings in "server_settings"
1715
3059
1716
3060
##################################################################
1717
3061
3062
if (not server_settings["zeroconf"]
3063
and not (server_settings["port"]
3064
or server_settings["socket"] != "")):
3065
parser.error("Needs port or socket to work without Zeroconf")
3066
1718
3067
# For convenience
1719
debug = server_settings[u"debug"]
1720
debuglevel = server_settings[u"debuglevel"]
1721
use_dbus = server_settings[u"use_dbus"]
1722
use_ipv6 = server_settings[u"use_ipv6"]
1723
1724
if server_settings[u"servicename"] != u"Mandos":
1725
syslogger.setFormatter(logging.Formatter
1726
(u'Mandos (%s) [%%(process)d]:'
1727
u' %%(levelname)s: %%(message)s'
1728
% server_settings[u"servicename"]))
1729
3068
debug = server_settings["debug"]
3069
debuglevel = server_settings["debuglevel"]
3070
use_dbus = server_settings["use_dbus"]
3071
use_ipv6 = server_settings["use_ipv6"]
3072
stored_state_path = os.path.join(server_settings["statedir"],
3073
stored_state_file)
3074
foreground = server_settings["foreground"]
3075
zeroconf = server_settings["zeroconf"]
3076
3077
if debug:
3078
initlogger(debug, logging.DEBUG)
3079
else:
3080
if not debuglevel:
3081
initlogger(debug)
3082
else:
3083
level = getattr(logging, debuglevel.upper())
3084
initlogger(debug, level)
3085
3086
if server_settings["servicename"] != "Mandos":
3087
syslogger.setFormatter(
3088
logging.Formatter('Mandos ({}) [%(process)d]:'
3089
' %(levelname)s: %(message)s'.format(
3090
server_settings["servicename"])))
3091
1730
3092
# Parse config file with clients
1731
client_defaults = { u"timeout": u"1h",
1732
u"interval": u"5m",
1733
u"checker": u"fping -q -- %%(host)s",
1734
u"host": u"",
1735
u"approval_delay": u"0s",
1736
u"approval_duration": u"1s",
1737
}
1738
client_config = configparser.SafeConfigParser(client_defaults)
1739
client_config.read(os.path.join(server_settings[u"configdir"],
1740
u"clients.conf"))
1741
3093
client_config = configparser.ConfigParser(Client.client_defaults)
3094
client_config.read(os.path.join(server_settings["configdir"],
3095
"clients.conf"))
3096
1742
3097
global mandos_dbus_service
1743
3098
mandos_dbus_service = None
1744
1745
tcp_server = MandosServer((server_settings[u"address"],
1746
server_settings[u"port"]),
1747
ClientHandler,
1748
interface=(server_settings[u"interface"]
1749
or None),
1750
use_ipv6=use_ipv6,
1751
gnutls_priority=
1752
server_settings[u"priority"],
1753
use_dbus=use_dbus)
1754
pidfilename = u"/var/run/mandos.pid"
1755
try:
1756
pidfile = open(pidfilename, u"w")
1757
except IOError:
1758
logger.error(u"Could not open file %r", pidfilename)
1759
1760
try:
1761
uid = pwd.getpwnam(u"_mandos").pw_uid
1762
gid = pwd.getpwnam(u"_mandos").pw_gid
1763
except KeyError:
1764
try:
1765
uid = pwd.getpwnam(u"mandos").pw_uid
1766
gid = pwd.getpwnam(u"mandos").pw_gid
3099
3100
socketfd = None
3101
if server_settings["socket"] != "":
3102
socketfd = server_settings["socket"]
3103
tcp_server = MandosServer(
3104
(server_settings["address"], server_settings["port"]),
3105
ClientHandler,
3106
interface=(server_settings["interface"] or None),
3107
use_ipv6=use_ipv6,
3108
gnutls_priority=server_settings["priority"],
3109
use_dbus=use_dbus,
3110
socketfd=socketfd)
3111
if not foreground:
3112
pidfilename = "/run/mandos.pid"
3113
if not os.path.isdir("/run/."):
3114
pidfilename = "/var/run/mandos.pid"
3115
pidfile = None
3116
try:
3117
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3118
except IOError as e:
3119
logger.error("Could not open file %r", pidfilename,
3120
exc_info=e)
3121
3122
for name, group in (("_mandos", "_mandos"),
3123
("mandos", "mandos"),
3124
("nobody", "nogroup")):
3125
try:
3126
uid = pwd.getpwnam(name).pw_uid
3127
gid = pwd.getpwnam(group).pw_gid
3128
break
1767
3129
except KeyError:
1768
try:
1769
uid = pwd.getpwnam(u"nobody").pw_uid
1770
gid = pwd.getpwnam(u"nobody").pw_gid
1771
except KeyError:
1772
uid = 65534
1773
gid = 65534
3130
continue
3131
else:
3132
uid = 65534
3133
gid = 65534
1774
3134
try:
1775
3135
os.setgid(gid)
1776
3136
os.setuid(uid)
1777
except OSError, error:
1778
if error[0] != errno.EPERM:
1779
raise error
1780
1781
if not debug and not debuglevel:
1782
syslogger.setLevel(logging.WARNING)
1783
console.setLevel(logging.WARNING)
1784
if debuglevel:
1785
level = getattr(logging, debuglevel.upper())
1786
syslogger.setLevel(level)
1787
console.setLevel(level)
3137
if debug:
3138
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3139
gid))
3140
except OSError as error:
3141
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3142
.format(uid, gid, os.strerror(error.errno)))
3143
if error.errno != errno.EPERM:
3144
raise
1788
3145
1789
3146
if debug:
1790
3147
# Enable all possible GnuTLS debugging
1791
3148
1792
3149
# "Use a log level over 10 to enable all debugging options."
1793
3150
# - GnuTLS manual
1794
gnutls.library.functions.gnutls_global_set_log_level(11)
1795
1796
@gnutls.library.types.gnutls_log_func
3151
gnutls.global_set_log_level(11)
3152
3153
@gnutls.log_func
1797
3154
def debug_gnutls(level, string):
1798
logger.debug(u"GnuTLS: %s", string[:-1])
1799
1800
(gnutls.library.functions
1801
.gnutls_global_set_log_function(debug_gnutls))
1802
3155
logger.debug("GnuTLS: %s", string[:-1])
3156
3157
gnutls.global_set_log_function(debug_gnutls)
3158
1803
3159
# Redirect stdin so all checkers get /dev/null
1804
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3160
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1805
3161
os.dup2(null, sys.stdin.fileno())
1806
3162
if null > 2:
1807
3163
os.close(null)
1808
else:
1809
# No console logging
1810
logger.removeHandler(console)
1811
1812
3164
3165
# Need to fork before connecting to D-Bus
3166
if not foreground:
3167
# Close all input and output, do double fork, etc.
3168
daemon()
3169
3170
if gi.version_info < (3, 10, 2):
3171
# multiprocessing will use threads, so before we use GLib we
3172
# need to inform GLib that threads will be used.
3173
GLib.threads_init()
3174
1813
3175
global main_loop
1814
3176
# From the Avahi example code
1815
DBusGMainLoop(set_as_default=True )
1816
main_loop = gobject.MainLoop()
3177
DBusGMainLoop(set_as_default=True)
3178
main_loop = GLib.MainLoop()
1817
3179
bus = dbus.SystemBus()
1818
3180
# End of Avahi example code
1819
3181
if use_dbus:
1820
3182
try:
1821
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1822
bus, do_not_queue=True)
1823
except dbus.exceptions.NameExistsException, e:
1824
logger.error(unicode(e) + u", disabling D-Bus")
3183
bus_name = dbus.service.BusName("se.recompile.Mandos",
3184
bus,
3185
do_not_queue=True)
3186
old_bus_name = dbus.service.BusName(
3187
"se.bsnet.fukt.Mandos", bus,
3188
do_not_queue=True)
3189
except dbus.exceptions.DBusException as e:
3190
logger.error("Disabling D-Bus:", exc_info=e)
1825
3191
use_dbus = False
1826
server_settings[u"use_dbus"] = False
3192
server_settings["use_dbus"] = False
1827
3193
tcp_server.use_dbus = False
1828
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1829
service = AvahiService(name = server_settings[u"servicename"],
1830
servicetype = u"_mandos._tcp",
1831
protocol = protocol, bus = bus)
1832
if server_settings["interface"]:
1833
service.interface = (if_nametoindex
1834
(str(server_settings[u"interface"])))
3194
if zeroconf:
3195
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3196
service = AvahiServiceToSyslog(
3197
name=server_settings["servicename"],
3198
servicetype="_mandos._tcp",
3199
protocol=protocol,
3200
bus=bus)
3201
if server_settings["interface"]:
3202
service.interface = if_nametoindex(
3203
server_settings["interface"].encode("utf-8"))
1835
3204
1836
if not debug:
1837
# Close all input and output, do double fork, etc.
1838
daemon()
1839
1840
3205
global multiprocessing_manager
1841
3206
multiprocessing_manager = multiprocessing.Manager()
1842
3207
1843
3208
client_class = Client
1844
3209
if use_dbus:
1845
client_class = functools.partial(ClientDBus, bus = bus)
1846
def client_config_items(config, section):
1847
special_settings = {
1848
"approved_by_default":
1849
lambda: config.getboolean(section,
1850
"approved_by_default"),
1851
}
1852
for name, value in config.items(section):
3210
client_class = functools.partial(ClientDBus, bus=bus)
3211
3212
client_settings = Client.config_parser(client_config)
3213
old_client_settings = {}
3214
clients_data = {}
3215
3216
# This is used to redirect stdout and stderr for checker processes
3217
global wnull
3218
wnull = open(os.devnull, "w") # A writable /dev/null
3219
# Only used if server is running in foreground but not in debug
3220
# mode
3221
if debug or not foreground:
3222
wnull.close()
3223
3224
# Get client data and settings from last running state.
3225
if server_settings["restore"]:
3226
try:
3227
with open(stored_state_path, "rb") as stored_state:
3228
if sys.version_info.major == 2:
3229
clients_data, old_client_settings = pickle.load(
3230
stored_state)
3231
else:
3232
bytes_clients_data, bytes_old_client_settings = (
3233
pickle.load(stored_state, encoding="bytes"))
3234
# Fix bytes to strings
3235
# clients_data
3236
# .keys()
3237
clients_data = {(key.decode("utf-8")
3238
if isinstance(key, bytes)
3239
else key): value
3240
for key, value in
3241
bytes_clients_data.items()}
3242
del bytes_clients_data
3243
for key in clients_data:
3244
value = {(k.decode("utf-8")
3245
if isinstance(k, bytes) else k): v
3246
for k, v in
3247
clients_data[key].items()}
3248
clients_data[key] = value
3249
# .client_structure
3250
value["client_structure"] = [
3251
(s.decode("utf-8")
3252
if isinstance(s, bytes)
3253
else s) for s in
3254
value["client_structure"]]
3255
# .name, .host, and .checker_command
3256
for k in ("name", "host", "checker_command"):
3257
if isinstance(value[k], bytes):
3258
value[k] = value[k].decode("utf-8")
3259
if "key_id" not in value:
3260
value["key_id"] = ""
3261
elif "fingerprint" not in value:
3262
value["fingerprint"] = ""
3263
# old_client_settings
3264
# .keys()
3265
old_client_settings = {
3266
(key.decode("utf-8")
3267
if isinstance(key, bytes)
3268
else key): value
3269
for key, value in
3270
bytes_old_client_settings.items()}
3271
del bytes_old_client_settings
3272
# .host and .checker_command
3273
for value in old_client_settings.values():
3274
for attribute in ("host", "checker_command"):
3275
if isinstance(value[attribute], bytes):
3276
value[attribute] = (value[attribute]
3277
.decode("utf-8"))
3278
os.remove(stored_state_path)
3279
except IOError as e:
3280
if e.errno == errno.ENOENT:
3281
logger.warning("Could not load persistent state:"
3282
" {}".format(os.strerror(e.errno)))
3283
else:
3284
logger.critical("Could not load persistent state:",
3285
exc_info=e)
3286
raise
3287
except EOFError as e:
3288
logger.warning("Could not load persistent state: "
3289
"EOFError:",
3290
exc_info=e)
3291
3292
with PGPEngine() as pgp:
3293
for client_name, client in clients_data.items():
3294
# Skip removed clients
3295
if client_name not in client_settings:
3296
continue
3297
3298
# Decide which value to use after restoring saved state.
3299
# We have three different values: Old config file,
3300
# new config file, and saved state.
3301
# New config value takes precedence if it differs from old
3302
# config value, otherwise use saved state.
3303
for name, value in client_settings[client_name].items():
3304
try:
3305
# For each value in new config, check if it
3306
# differs from the old config value (Except for
3307
# the "secret" attribute)
3308
if (name != "secret"
3309
and (value !=
3310
old_client_settings[client_name][name])):
3311
client[name] = value
3312
except KeyError:
3313
pass
3314
3315
# Clients who has passed its expire date can still be
3316
# enabled if its last checker was successful. A Client
3317
# whose checker succeeded before we stored its state is
3318
# assumed to have successfully run all checkers during
3319
# downtime.
3320
if client["enabled"]:
3321
if datetime.datetime.utcnow() >= client["expires"]:
3322
if not client["last_checked_ok"]:
3323
logger.warning(
3324
"disabling client {} - Client never "
3325
"performed a successful checker".format(
3326
client_name))
3327
client["enabled"] = False
3328
elif client["last_checker_status"] != 0:
3329
logger.warning(
3330
"disabling client {} - Client last"
3331
" checker failed with error code"
3332
" {}".format(
3333
client_name,
3334
client["last_checker_status"]))
3335
client["enabled"] = False
3336
else:
3337
client["expires"] = (
3338
datetime.datetime.utcnow()
3339
+ client["timeout"])
3340
logger.debug("Last checker succeeded,"
3341
" keeping {} enabled".format(
3342
client_name))
1853
3343
try:
1854
yield (name, special_settings[name]())
1855
except KeyError:
1856
yield (name, value)
1857
1858
tcp_server.clients.update(set(
1859
client_class(name = section,
1860
config= dict(client_config_items(
1861
client_config, section)))
1862
for section in client_config.sections()))
3344
client["secret"] = pgp.decrypt(
3345
client["encrypted_secret"],
3346
client_settings[client_name]["secret"])
3347
except PGPError:
3348
# If decryption fails, we use secret from new settings
3349
logger.debug("Failed to decrypt {} old secret".format(
3350
client_name))
3351
client["secret"] = (client_settings[client_name]
3352
["secret"])
3353
3354
# Add/remove clients based on new changes made to config
3355
for client_name in (set(old_client_settings)
3356
- set(client_settings)):
3357
del clients_data[client_name]
3358
for client_name in (set(client_settings)
3359
- set(old_client_settings)):
3360
clients_data[client_name] = client_settings[client_name]
3361
3362
# Create all client objects
3363
for client_name, client in clients_data.items():
3364
tcp_server.clients[client_name] = client_class(
3365
name=client_name,
3366
settings=client,
3367
server_settings=server_settings)
3368
1863
3369
if not tcp_server.clients:
1864
logger.warning(u"No clients defined")
1865
1866
try:
1867
with pidfile:
3370
logger.warning("No clients defined")
3371
3372
if not foreground:
3373
if pidfile is not None:
1868
3374
pid = os.getpid()
1869
pidfile.write(str(pid) + "\n")
3375
try:
3376
with pidfile:
3377
print(pid, file=pidfile)
3378
except IOError:
3379
logger.error("Could not write to file %r with PID %d",
3380
pidfilename, pid)
1870
3381
del pidfile
1871
except IOError:
1872
logger.error(u"Could not write to file %r with PID %d",
1873
pidfilename, pid)
1874
except NameError:
1875
# "pidfile" was never created
1876
pass
1877
del pidfilename
1878
1879
if not debug:
1880
signal.signal(signal.SIGINT, signal.SIG_IGN)
1881
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1882
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1883
3382
del pidfilename
3383
3384
for termsig in (signal.SIGHUP, signal.SIGTERM):
3385
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3386
lambda: main_loop.quit() and False)
3387
1884
3388
if use_dbus:
1885
class MandosDBusService(dbus.service.Object):
3389
3390
@alternate_dbus_interfaces(
3391
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3392
class MandosDBusService(DBusObjectWithObjectManager):
1886
3393
"""A D-Bus proxy object"""
3394
1887
3395
def __init__(self):
1888
dbus.service.Object.__init__(self, bus, u"/")
1889
_interface = u"se.bsnet.fukt.Mandos"
1890
1891
@dbus.service.signal(_interface, signature=u"o")
3396
dbus.service.Object.__init__(self, bus, "/")
3397
3398
_interface = "se.recompile.Mandos"
3399
3400
@dbus.service.signal(_interface, signature="o")
1892
3401
def ClientAdded(self, objpath):
1893
3402
"D-Bus signal"
1894
3403
pass
1895
1896
@dbus.service.signal(_interface, signature=u"ss")
1897
def ClientNotFound(self, fingerprint, address):
3404
3405
@dbus.service.signal(_interface, signature="ss")
3406
def ClientNotFound(self, key_id, address):
1898
3407
"D-Bus signal"
1899
3408
pass
1900
1901
@dbus.service.signal(_interface, signature=u"os")
3409
3410
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3411
"true"})
3412
@dbus.service.signal(_interface, signature="os")
1902
3413
def ClientRemoved(self, objpath, name):
1903
3414
"D-Bus signal"
1904
3415
pass
1905
1906
@dbus.service.method(_interface, out_signature=u"ao")
3416
3417
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3418
"true"})
3419
@dbus.service.method(_interface, out_signature="ao")
1907
3420
def GetAllClients(self):
1908
3421
"D-Bus method"
1909
return dbus.Array(c.dbus_object_path
1910
for c in tcp_server.clients)
1911
3422
return dbus.Array(c.dbus_object_path for c in
3423
tcp_server.clients.values())
3424
3425
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3426
"true"})
1912
3427
@dbus.service.method(_interface,
1913
out_signature=u"a{oa{sv}}")
3428
out_signature="a{oa{sv}}")
1914
3429
def GetAllClientsWithProperties(self):
1915
3430
"D-Bus method"
1916
3431
return dbus.Dictionary(
1917
((c.dbus_object_path, c.GetAll(u""))
1918
for c in tcp_server.clients),
1919
signature=u"oa{sv}")
1920
1921
@dbus.service.method(_interface, in_signature=u"o")
3432
{c.dbus_object_path: c.GetAll(
3433
"se.recompile.Mandos.Client")
3434
for c in tcp_server.clients.values()},
3435
signature="oa{sv}")
3436
3437
@dbus.service.method(_interface, in_signature="o")
1922
3438
def RemoveClient(self, object_path):
1923
3439
"D-Bus method"
1924
for c in tcp_server.clients:
3440
for c in tcp_server.clients.values():
1925
3441
if c.dbus_object_path == object_path:
1926
tcp_server.clients.remove(c)
3442
del tcp_server.clients[c.name]
1927
3443
c.remove_from_connection()
1928
# Don't signal anything except ClientRemoved
3444
# Don't signal the disabling
1929
3445
c.disable(quiet=True)
1930
# Emit D-Bus signal
1931
self.ClientRemoved(object_path, c.name)
3446
# Emit D-Bus signal for removal
3447
self.client_removed_signal(c)
1932
3448
return
1933
3449
raise KeyError(object_path)
1934
3450
1935
3451
del _interface
1936
3452
3453
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3454
out_signature="a{oa{sa{sv}}}")
3455
def GetManagedObjects(self):
3456
"""D-Bus method"""
3457
return dbus.Dictionary(
3458
{client.dbus_object_path:
3459
dbus.Dictionary(
3460
{interface: client.GetAll(interface)
3461
for interface in
3462
client._get_all_interface_names()})
3463
for client in tcp_server.clients.values()})
3464
3465
def client_added_signal(self, client):
3466
"""Send the new standard signal and the old signal"""
3467
if use_dbus:
3468
# New standard signal
3469
self.InterfacesAdded(
3470
client.dbus_object_path,
3471
dbus.Dictionary(
3472
{interface: client.GetAll(interface)
3473
for interface in
3474
client._get_all_interface_names()}))
3475
# Old signal
3476
self.ClientAdded(client.dbus_object_path)
3477
3478
def client_removed_signal(self, client):
3479
"""Send the new standard signal and the old signal"""
3480
if use_dbus:
3481
# New standard signal
3482
self.InterfacesRemoved(
3483
client.dbus_object_path,
3484
client._get_all_interface_names())
3485
# Old signal
3486
self.ClientRemoved(client.dbus_object_path,
3487
client.name)
3488
1937
3489
mandos_dbus_service = MandosDBusService()
1938
3490
3491
# Save modules to variables to exempt the modules from being
3492
# unloaded before the function registered with atexit() is run.
3493
mp = multiprocessing
3494
wn = wnull
3495
1939
3496
def cleanup():
1940
3497
"Cleanup function; run on exit"
1941
service.cleanup()
1942
3498
if zeroconf:
3499
service.cleanup()
3500
3501
mp.active_children()
3502
wn.close()
3503
if not (tcp_server.clients or client_settings):
3504
return
3505
3506
# Store client before exiting. Secrets are encrypted with key
3507
# based on what config file has. If config file is
3508
# removed/edited, old secret will thus be unrecovable.
3509
clients = {}
3510
with PGPEngine() as pgp:
3511
for client in tcp_server.clients.values():
3512
key = client_settings[client.name]["secret"]
3513
client.encrypted_secret = pgp.encrypt(client.secret,
3514
key)
3515
client_dict = {}
3516
3517
# A list of attributes that can not be pickled
3518
# + secret.
3519
exclude = {"bus", "changedstate", "secret",
3520
"checker", "server_settings"}
3521
for name, typ in inspect.getmembers(dbus.service
3522
.Object):
3523
exclude.add(name)
3524
3525
client_dict["encrypted_secret"] = (client
3526
.encrypted_secret)
3527
for attr in client.client_structure:
3528
if attr not in exclude:
3529
client_dict[attr] = getattr(client, attr)
3530
3531
clients[client.name] = client_dict
3532
del client_settings[client.name]["secret"]
3533
3534
try:
3535
with tempfile.NamedTemporaryFile(
3536
mode='wb',
3537
suffix=".pickle",
3538
prefix='clients-',
3539
dir=os.path.dirname(stored_state_path),
3540
delete=False) as stored_state:
3541
pickle.dump((clients, client_settings), stored_state,
3542
protocol=2)
3543
tempname = stored_state.name
3544
os.rename(tempname, stored_state_path)
3545
except (IOError, OSError) as e:
3546
if not debug:
3547
try:
3548
os.remove(tempname)
3549
except NameError:
3550
pass
3551
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3552
logger.warning("Could not save persistent state: {}"
3553
.format(os.strerror(e.errno)))
3554
else:
3555
logger.warning("Could not save persistent state:",
3556
exc_info=e)
3557
raise
3558
3559
# Delete all clients, and settings from config
1943
3560
while tcp_server.clients:
1944
client = tcp_server.clients.pop()
3561
name, client = tcp_server.clients.popitem()
1945
3562
if use_dbus:
1946
3563
client.remove_from_connection()
1947
client.disable_hook = None
1948
# Don't signal anything except ClientRemoved
3564
# Don't signal the disabling
1949
3565
client.disable(quiet=True)
3566
# Emit D-Bus signal for removal
1950
3567
if use_dbus:
1951
# Emit D-Bus signal
1952
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1953
client.name)
1954
3568
mandos_dbus_service.client_removed_signal(client)
3569
client_settings.clear()
3570
1955
3571
atexit.register(cleanup)
1956
1957
for client in tcp_server.clients:
3572
3573
for client in tcp_server.clients.values():
1958
3574
if use_dbus:
1959
# Emit D-Bus signal
1960
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1961
client.enable()
1962
3575
# Emit D-Bus signal for adding
3576
mandos_dbus_service.client_added_signal(client)
3577
# Need to initiate checking of clients
3578
if client.enabled:
3579
client.init_checker()
3580
1963
3581
tcp_server.enable()
1964
3582
tcp_server.server_activate()
1965
3583
1966
3584
# Find out what port we got
1967
service.port = tcp_server.socket.getsockname()[1]
3585
if zeroconf:
3586
service.port = tcp_server.socket.getsockname()[1]
1968
3587
if use_ipv6:
1969
logger.info(u"Now listening on address %r, port %d,"
1970
" flowinfo %d, scope_id %d"
1971
% tcp_server.socket.getsockname())
3588
logger.info("Now listening on address %r, port %d,"
3589
" flowinfo %d, scope_id %d",
3590
*tcp_server.socket.getsockname())
1972
3591
else: # IPv4
1973
logger.info(u"Now listening on address %r, port %d"
1974
% tcp_server.socket.getsockname())
1975
1976
#service.interface = tcp_server.socket.getsockname()[3]
1977
3592
logger.info("Now listening on address %r, port %d",
3593
*tcp_server.socket.getsockname())
3594
3595
# service.interface = tcp_server.socket.getsockname()[3]
3596
1978
3597
try:
1979
# From the Avahi example code
1980
try:
1981
service.activate()
1982
except dbus.exceptions.DBusException, error:
1983
logger.critical(u"DBusException: %s", error)
1984
cleanup()
1985
sys.exit(1)
1986
# End of Avahi example code
1987
1988
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1989
lambda *args, **kwargs:
1990
(tcp_server.handle_request
1991
(*args[2:], **kwargs) or True))
1992
1993
logger.debug(u"Starting main loop")
3598
if zeroconf:
3599
# From the Avahi example code
3600
try:
3601
service.activate()
3602
except dbus.exceptions.DBusException as error:
3603
logger.critical("D-Bus Exception", exc_info=error)
3604
cleanup()
3605
sys.exit(1)
3606
# End of Avahi example code
3607
3608
GLib.io_add_watch(
3609
GLib.IOChannel.unix_new(tcp_server.fileno()),
3610
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3611
lambda *args, **kwargs: (tcp_server.handle_request
3612
(*args[2:], **kwargs) or True))
3613
3614
logger.debug("Starting main loop")
1994
3615
main_loop.run()
1995
except AvahiError, error:
1996
logger.critical(u"AvahiError: %s", error)
3616
except AvahiError as error:
3617
logger.critical("Avahi Error", exc_info=error)
1997
3618
cleanup()
1998
3619
sys.exit(1)
1999
3620
except KeyboardInterrupt:
2000
3621
if debug:
2001
print >> sys.stderr
2002
logger.debug(u"Server received KeyboardInterrupt")
2003
logger.debug(u"Server exiting")
3622
print("", file=sys.stderr)
3623
logger.debug("Server received KeyboardInterrupt")
3624
logger.debug("Server exiting")
2004
3625
# Must run before the D-Bus bus name gets deregistered
2005
3626
cleanup()
2006
3627
3628
3629
def should_only_run_tests():
3630
parser = argparse.ArgumentParser(add_help=False)
3631
parser.add_argument("--check", action='store_true')
3632
args, unknown_args = parser.parse_known_args()
3633
run_tests = args.check
3634
if run_tests:
3635
# Remove --check argument from sys.argv
3636
sys.argv[1:] = unknown_args
3637
return run_tests
3638
3639
# Add all tests from doctest strings
3640
def load_tests(loader, tests, none):
3641
import doctest
3642
tests.addTests(doctest.DocTestSuite())
3643
return tests
3644
2007
3645
if __name__ == '__main__':
2008
main()
3646
try:
3647
if should_only_run_tests():
3648
# Call using ./mandos --check [--verbose]
3649
unittest.main()
3650
else:
3651
main()
3652
finally:
3653
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0