To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 518.2.9
- compare with another revision
- download diff
- download tarball
- view history from revision 518.2.9
- Committer: Teddy Hogeborn
- Date: 2011-11-29 20:30:21 UTC
- mto: (518.1.13 mandos-persistent)
- mto: This revision was merged to the branch mainline in revision 524.
- Revision ID: teddy@recompile.se-20111129203021-fzsq7sn15wysgqhd
* mandos (ClientDBus.approval_delay, ClientDBus.approval_duration,
ClientDBus.timeout, ClientDBus.extended_timeout,
ClientDBus.interval): Bug fix: Cast to correct D-Bus type.
* mandos-ctl (string_to_delta): Interpret unadorned numbers as
milliseconds.
ClientDBus.timeout, ClientDBus.extended_timeout,
ClientDBus.interval): Bug fix: Cast to correct D-Bus type.
* mandos-ctl (string_to_delta): Interpret unadorned numbers as
milliseconds.
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
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
import SocketServer as socketserver
47
38
import socket
48
39
import argparse
49
40
import datetime
50
41
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
55
49
import sys
56
50
import re
57
51
import os
66
60
import struct
67
61
import fcntl
68
62
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
import cPickle as pickle
73
64
import multiprocessing
74
65
import types
75
66
import binascii
76
67
import tempfile
77
import itertools
78
import collections
79
import codecs
80
68
81
69
import dbus
82
70
import dbus.service
83
from gi.repository import GLib
71
import gobject
72
import avahi
84
73
from dbus.mainloop.glib import DBusGMainLoop
85
74
import ctypes
86
75
import ctypes.util
87
76
import xml.dom.minidom
88
77
import inspect
78
import GnuPGInterface
89
79
90
# Try to find the value of SO_BINDTODEVICE:
91
80
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
94
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
95
82
except AttributeError:
96
83
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
99
84
from IN import SO_BINDTODEVICE
100
85
except ImportError:
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
114
115
if sys.version_info.major == 2:
116
str = unicode
117
118
version = "1.8.3"
86
SO_BINDTODEVICE = None
87
88
89
version = "1.4.1"
119
90
stored_state_file = "clients.pickle"
120
91
121
92
logger = logging.getLogger()
122
syslogger = None
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
123
96
124
97
try:
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
127
101
except (OSError, AttributeError):
128
129
102
def if_nametoindex(interface):
130
103
"Get an interface index the hard way, i.e. using fcntl()"
131
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
132
105
with contextlib.closing(socket.socket()) as s:
133
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
136
111
return interface_index
137
112
138
113
139
def copy_function(func):
140
"""Make a copy of a function"""
141
if sys.version_info.major == 2:
142
return types.FunctionType(func.func_code,
143
func.func_globals,
144
func.func_name,
145
func.func_defaults,
146
func.func_closure)
147
else:
148
return types.FunctionType(func.__code__,
149
func.__globals__,
150
func.__name__,
151
func.__defaults__,
152
func.__closure__)
153
154
155
def initlogger(debug, level=logging.WARNING):
114
def initlogger(level=logging.WARNING):
156
115
"""init logger and add loglevel"""
157
158
global syslogger
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
116
162
117
syslogger.setFormatter(logging.Formatter
163
118
('Mandos [%(process)d]: %(levelname)s:'
164
119
' %(message)s'))
165
120
logger.addHandler(syslogger)
166
167
if debug:
168
console = logging.StreamHandler()
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
170
' [%(process)d]:'
171
' %(levelname)s:'
172
' %(message)s'))
173
logger.addHandler(console)
121
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
124
' [%(process)d]:'
125
' %(levelname)s:'
126
' %(message)s'))
127
logger.addHandler(console)
174
128
logger.setLevel(level)
175
129
176
130
181
135
182
136
class PGPEngine(object):
183
137
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
185
138
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
186
140
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
187
self.gpg = "gpg"
188
try:
189
output = subprocess.check_output(["gpgconf"])
190
for line in output.splitlines():
191
name, text, path = line.split(b":")
192
if name == "gpg":
193
self.gpg = path
194
break
195
except OSError as e:
196
if e.errno != errno.ENOENT:
197
raise
198
self.gnupgargs = ['--batch',
199
'--homedir', self.tempdir,
200
'--force-mdc',
201
'--quiet']
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
205
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet'])
146
206
147
def __enter__(self):
207
148
return self
208
209
def __exit__(self, exc_type, exc_value, traceback):
149
150
def __exit__ (self, exc_type, exc_value, traceback):
210
151
self._cleanup()
211
152
return False
212
153
213
154
def __del__(self):
214
155
self._cleanup()
215
156
216
157
def _cleanup(self):
217
158
if self.tempdir is not None:
218
159
# Delete contents of tempdir
219
160
for root, dirs, files in os.walk(self.tempdir,
220
topdown=False):
161
topdown = False):
221
162
for filename in files:
222
163
os.remove(os.path.join(root, filename))
223
164
for dirname in dirs:
225
166
# Remove tempdir
226
167
os.rmdir(self.tempdir)
227
168
self.tempdir = None
228
169
229
170
def password_encode(self, password):
230
171
# Passphrase can not be empty and can not contain newlines or
231
172
# NUL bytes. So we prefix it and hex encode it.
232
encoded = b"mandos" + binascii.hexlify(password)
233
if len(encoded) > 2048:
234
# GnuPG can't handle long passwords, so encode differently
235
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
236
.replace(b"\n", b"\\n")
237
.replace(b"\0", b"\\x00"))
238
return encoded
239
173
return b"mandos" + binascii.hexlify(password)
174
240
175
def encrypt(self, data, password):
241
passphrase = self.password_encode(password)
242
with tempfile.NamedTemporaryFile(
243
dir=self.tempdir) as passfile:
244
passfile.write(passphrase)
245
passfile.flush()
246
proc = subprocess.Popen([self.gpg, '--symmetric',
247
'--passphrase-file',
248
passfile.name]
249
+ self.gnupgargs,
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
254
if proc.returncode != 0:
255
raise PGPError(err)
176
self.gnupg.passphrase = self.password_encode(password)
177
with open(os.devnull) as devnull:
178
try:
179
proc = self.gnupg.run(['--symmetric'],
180
create_fhs=['stdin', 'stdout'],
181
attach_fhs={'stderr': devnull})
182
with contextlib.closing(proc.handles['stdin']) as f:
183
f.write(data)
184
with contextlib.closing(proc.handles['stdout']) as f:
185
ciphertext = f.read()
186
proc.wait()
187
except IOError as e:
188
raise PGPError(e)
189
self.gnupg.passphrase = None
256
190
return ciphertext
257
191
258
192
def decrypt(self, data, password):
259
passphrase = self.password_encode(password)
260
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
262
passfile.write(passphrase)
263
passfile.flush()
264
proc = subprocess.Popen([self.gpg, '--decrypt',
265
'--passphrase-file',
266
passfile.name]
267
+ self.gnupgargs,
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
272
if proc.returncode != 0:
273
raise PGPError(err)
193
self.gnupg.passphrase = self.password_encode(password)
194
with open(os.devnull) as devnull:
195
try:
196
proc = self.gnupg.run(['--decrypt'],
197
create_fhs=['stdin', 'stdout'],
198
attach_fhs={'stderr': devnull})
199
with contextlib.closing(proc.handles['stdin'] ) as f:
200
f.write(data)
201
with contextlib.closing(proc.handles['stdout']) as f:
202
decrypted_plaintext = f.read()
203
proc.wait()
204
except IOError as e:
205
raise PGPError(e)
206
self.gnupg.passphrase = None
274
207
return decrypted_plaintext
275
208
276
209
277
# Pretend that we have an Avahi module
278
class avahi(object):
279
"""This isn't so much a class as it is a module-like namespace."""
280
IF_UNSPEC = -1 # avahi-common/address.h
281
PROTO_UNSPEC = -1 # avahi-common/address.h
282
PROTO_INET = 0 # avahi-common/address.h
283
PROTO_INET6 = 1 # avahi-common/address.h
284
DBUS_NAME = "org.freedesktop.Avahi"
285
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
286
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
287
DBUS_PATH_SERVER = "/"
288
289
@staticmethod
290
def string_array_to_txt_array(t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
302
210
303
211
class AvahiError(Exception):
304
212
def __init__(self, value, *args, **kwargs):
305
213
self.value = value
306
return super(AvahiError, self).__init__(value, *args,
307
**kwargs)
308
214
super(AvahiError, self).__init__(value, *args, **kwargs)
215
def __unicode__(self):
216
return unicode(repr(self.value))
309
217
310
218
class AvahiServiceError(AvahiError):
311
219
pass
312
220
313
314
221
class AvahiGroupError(AvahiError):
315
222
pass
316
223
317
224
318
225
class AvahiService(object):
319
226
"""An Avahi (Zeroconf) service.
320
227
321
228
Attributes:
322
229
interface: integer; avahi.IF_UNSPEC or an interface index.
323
230
Used to optionally bind to the specified interface.
324
231
name: string; Example: 'Mandos'
325
232
type: string; Example: '_mandos._tcp'.
326
See <https://www.iana.org/assignments/service-names-port-numbers>
233
See <http://www.dns-sd.org/ServiceTypes.html>
327
234
port: integer; what port to announce
328
235
TXT: list of strings; TXT record for the service
329
236
domain: string; Domain to publish on, default to .local if empty.
335
242
server: D-Bus Server
336
243
bus: dbus.SystemBus()
337
244
"""
338
339
def __init__(self,
340
interface=avahi.IF_UNSPEC,
341
name=None,
342
servicetype=None,
343
port=None,
344
TXT=None,
345
domain="",
346
host="",
347
max_renames=32768,
348
protocol=avahi.PROTO_UNSPEC,
349
bus=None):
245
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
246
servicetype = None, port = None, TXT = None,
247
domain = "", host = "", max_renames = 32768,
248
protocol = avahi.PROTO_UNSPEC, bus = None):
350
249
self.interface = interface
351
250
self.name = name
352
251
self.type = servicetype
361
260
self.server = None
362
261
self.bus = bus
363
262
self.entry_group_state_changed_match = None
364
365
def rename(self, remove=True):
263
def rename(self):
366
264
"""Derived from the Avahi example code"""
367
265
if self.rename_count >= self.max_renames:
368
266
logger.critical("No suitable Zeroconf service name found"
369
267
" after %i retries, exiting.",
370
268
self.rename_count)
371
269
raise AvahiServiceError("Too many renames")
372
self.name = str(
373
self.server.GetAlternativeServiceName(self.name))
374
self.rename_count += 1
270
self.name = unicode(self.server
271
.GetAlternativeServiceName(self.name))
375
272
logger.info("Changing Zeroconf service name to %r ...",
376
273
self.name)
377
if remove:
378
self.remove()
274
self.remove()
379
275
try:
380
276
self.add()
381
277
except dbus.exceptions.DBusException as error:
382
if (error.get_dbus_name()
383
== "org.freedesktop.Avahi.CollisionError"):
384
logger.info("Local Zeroconf service name collision.")
385
return self.rename(remove=False)
386
else:
387
logger.critical("D-Bus Exception", exc_info=error)
388
self.cleanup()
389
os._exit(1)
390
278
logger.critical("DBusException: %s", error)
279
self.cleanup()
280
os._exit(1)
281
self.rename_count += 1
391
282
def remove(self):
392
283
"""Derived from the Avahi example code"""
393
284
if self.entry_group_state_changed_match is not None:
395
286
self.entry_group_state_changed_match = None
396
287
if self.group is not None:
397
288
self.group.Reset()
398
399
289
def add(self):
400
290
"""Derived from the Avahi example code"""
401
291
self.remove()
418
308
dbus.UInt16(self.port),
419
309
avahi.string_array_to_txt_array(self.TXT))
420
310
self.group.Commit()
421
422
311
def entry_group_state_changed(self, state, error):
423
312
"""Derived from the Avahi example code"""
424
313
logger.debug("Avahi entry group state change: %i", state)
425
314
426
315
if state == avahi.ENTRY_GROUP_ESTABLISHED:
427
316
logger.debug("Zeroconf service established.")
428
317
elif state == avahi.ENTRY_GROUP_COLLISION:
430
319
self.rename()
431
320
elif state == avahi.ENTRY_GROUP_FAILURE:
432
321
logger.critical("Avahi: Error in group state changed %s",
433
str(error))
434
raise AvahiGroupError("State changed: {!s}".format(error))
435
322
unicode(error))
323
raise AvahiGroupError("State changed: %s"
324
% unicode(error))
436
325
def cleanup(self):
437
326
"""Derived from the Avahi example code"""
438
327
if self.group is not None:
443
332
pass
444
333
self.group = None
445
334
self.remove()
446
447
335
def server_state_changed(self, state, error=None):
448
336
"""Derived from the Avahi example code"""
449
337
logger.debug("Avahi server state change: %i", state)
450
bad_states = {
451
avahi.SERVER_INVALID: "Zeroconf server invalid",
452
avahi.SERVER_REGISTERING: None,
453
avahi.SERVER_COLLISION: "Zeroconf server name collision",
454
avahi.SERVER_FAILURE: "Zeroconf server failure",
455
}
338
bad_states = { avahi.SERVER_INVALID:
339
"Zeroconf server invalid",
340
avahi.SERVER_REGISTERING: None,
341
avahi.SERVER_COLLISION:
342
"Zeroconf server name collision",
343
avahi.SERVER_FAILURE:
344
"Zeroconf server failure" }
456
345
if state in bad_states:
457
346
if bad_states[state] is not None:
458
347
if error is None:
461
350
logger.error(bad_states[state] + ": %r", error)
462
351
self.cleanup()
463
352
elif state == avahi.SERVER_RUNNING:
464
try:
465
self.add()
466
except dbus.exceptions.DBusException as error:
467
if (error.get_dbus_name()
468
== "org.freedesktop.Avahi.CollisionError"):
469
logger.info("Local Zeroconf service name"
470
" collision.")
471
return self.rename(remove=False)
472
else:
473
logger.critical("D-Bus Exception", exc_info=error)
474
self.cleanup()
475
os._exit(1)
353
self.add()
476
354
else:
477
355
if error is None:
478
356
logger.debug("Unknown state: %r", state)
479
357
else:
480
358
logger.debug("Unknown state: %r: %r", state, error)
481
482
359
def activate(self):
483
360
"""Derived from the Avahi example code"""
484
361
if self.server is None:
488
365
follow_name_owner_changes=True),
489
366
avahi.DBUS_INTERFACE_SERVER)
490
367
self.server.connect_to_signal("StateChanged",
491
self.server_state_changed)
368
self.server_state_changed)
492
369
self.server_state_changed(self.server.GetState())
493
370
494
495
371
class AvahiServiceToSyslog(AvahiService):
496
def rename(self, *args, **kwargs):
372
def rename(self):
497
373
"""Add the new name to the syslog messages"""
498
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
499
syslogger.setFormatter(logging.Formatter(
500
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
501
.format(self.name)))
374
ret = AvahiService.rename(self)
375
syslogger.setFormatter(logging.Formatter
376
('Mandos (%s) [%%(process)d]:'
377
' %%(levelname)s: %%(message)s'
378
% self.name))
502
379
return ret
503
380
504
505
# Pretend that we have a GnuTLS module
506
class gnutls(object):
507
"""This isn't so much a class as it is a module-like namespace."""
508
509
library = ctypes.util.find_library("gnutls")
510
if library is None:
511
library = ctypes.util.find_library("gnutls-deb0")
512
_library = ctypes.cdll.LoadLibrary(library)
513
del library
514
515
# Unless otherwise indicated, the constants and types below are
516
# all from the gnutls/gnutls.h C header file.
517
518
# Constants
519
E_SUCCESS = 0
520
E_INTERRUPTED = -52
521
E_AGAIN = -28
522
CRT_OPENPGP = 2
523
CRT_RAWPK = 3
524
CLIENT = 2
525
SHUT_RDWR = 0
526
CRD_CERTIFICATE = 1
527
E_NO_CERTIFICATE_FOUND = -49
528
X509_FMT_DER = 0
529
NO_TICKETS = 1<<10
530
ENABLE_RAWPK = 1<<18
531
CTYPE_PEERS = 3
532
KEYID_USE_SHA256 = 1 # gnutls/x509.h
533
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
534
535
# Types
536
class session_int(ctypes.Structure):
537
_fields_ = []
538
session_t = ctypes.POINTER(session_int)
539
540
class certificate_credentials_st(ctypes.Structure):
541
_fields_ = []
542
certificate_credentials_t = ctypes.POINTER(
543
certificate_credentials_st)
544
certificate_type_t = ctypes.c_int
545
546
class datum_t(ctypes.Structure):
547
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
548
('size', ctypes.c_uint)]
549
550
class openpgp_crt_int(ctypes.Structure):
551
_fields_ = []
552
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
553
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
554
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
555
credentials_type_t = ctypes.c_int
556
transport_ptr_t = ctypes.c_void_p
557
close_request_t = ctypes.c_int
558
559
# Exceptions
560
class Error(Exception):
561
def __init__(self, message=None, code=None, args=()):
562
# Default usage is by a message string, but if a return
563
# code is passed, convert it to a string with
564
# gnutls.strerror()
565
self.code = code
566
if message is None and code is not None:
567
message = gnutls.strerror(code)
568
return super(gnutls.Error, self).__init__(
569
message, *args)
570
571
class CertificateSecurityError(Error):
572
pass
573
574
# Classes
575
class Credentials(object):
576
def __init__(self):
577
self._c_object = gnutls.certificate_credentials_t()
578
gnutls.certificate_allocate_credentials(
579
ctypes.byref(self._c_object))
580
self.type = gnutls.CRD_CERTIFICATE
581
582
def __del__(self):
583
gnutls.certificate_free_credentials(self._c_object)
584
585
class ClientSession(object):
586
def __init__(self, socket, credentials=None):
587
self._c_object = gnutls.session_t()
588
gnutls_flags = gnutls.CLIENT
589
if gnutls.check_version("3.5.6"):
590
gnutls_flags |= gnutls.NO_TICKETS
591
if gnutls.has_rawpk:
592
gnutls_flags |= gnutls.ENABLE_RAWPK
593
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
594
del gnutls_flags
595
gnutls.set_default_priority(self._c_object)
596
gnutls.transport_set_ptr(self._c_object, socket.fileno())
597
gnutls.handshake_set_private_extensions(self._c_object,
598
True)
599
self.socket = socket
600
if credentials is None:
601
credentials = gnutls.Credentials()
602
gnutls.credentials_set(self._c_object, credentials.type,
603
ctypes.cast(credentials._c_object,
604
ctypes.c_void_p))
605
self.credentials = credentials
606
607
def __del__(self):
608
gnutls.deinit(self._c_object)
609
610
def handshake(self):
611
return gnutls.handshake(self._c_object)
612
613
def send(self, data):
614
data = bytes(data)
615
data_len = len(data)
616
while data_len > 0:
617
data_len -= gnutls.record_send(self._c_object,
618
data[-data_len:],
619
data_len)
620
621
def bye(self):
622
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
623
624
# Error handling functions
625
def _error_code(result):
626
"""A function to raise exceptions on errors, suitable
627
for the 'restype' attribute on ctypes functions"""
628
if result >= 0:
629
return result
630
if result == gnutls.E_NO_CERTIFICATE_FOUND:
631
raise gnutls.CertificateSecurityError(code=result)
632
raise gnutls.Error(code=result)
633
634
def _retry_on_error(result, func, arguments):
635
"""A function to retry on some errors, suitable
636
for the 'errcheck' attribute on ctypes functions"""
637
while result < 0:
638
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
639
return _error_code(result)
640
result = func(*arguments)
641
return result
642
643
# Unless otherwise indicated, the function declarations below are
644
# all from the gnutls/gnutls.h C header file.
645
646
# Functions
647
priority_set_direct = _library.gnutls_priority_set_direct
648
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
649
ctypes.POINTER(ctypes.c_char_p)]
650
priority_set_direct.restype = _error_code
651
652
init = _library.gnutls_init
653
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
654
init.restype = _error_code
655
656
set_default_priority = _library.gnutls_set_default_priority
657
set_default_priority.argtypes = [session_t]
658
set_default_priority.restype = _error_code
659
660
record_send = _library.gnutls_record_send
661
record_send.argtypes = [session_t, ctypes.c_void_p,
662
ctypes.c_size_t]
663
record_send.restype = ctypes.c_ssize_t
664
record_send.errcheck = _retry_on_error
665
666
certificate_allocate_credentials = (
667
_library.gnutls_certificate_allocate_credentials)
668
certificate_allocate_credentials.argtypes = [
669
ctypes.POINTER(certificate_credentials_t)]
670
certificate_allocate_credentials.restype = _error_code
671
672
certificate_free_credentials = (
673
_library.gnutls_certificate_free_credentials)
674
certificate_free_credentials.argtypes = [
675
certificate_credentials_t]
676
certificate_free_credentials.restype = None
677
678
handshake_set_private_extensions = (
679
_library.gnutls_handshake_set_private_extensions)
680
handshake_set_private_extensions.argtypes = [session_t,
681
ctypes.c_int]
682
handshake_set_private_extensions.restype = None
683
684
credentials_set = _library.gnutls_credentials_set
685
credentials_set.argtypes = [session_t, credentials_type_t,
686
ctypes.c_void_p]
687
credentials_set.restype = _error_code
688
689
strerror = _library.gnutls_strerror
690
strerror.argtypes = [ctypes.c_int]
691
strerror.restype = ctypes.c_char_p
692
693
certificate_type_get = _library.gnutls_certificate_type_get
694
certificate_type_get.argtypes = [session_t]
695
certificate_type_get.restype = _error_code
696
697
certificate_get_peers = _library.gnutls_certificate_get_peers
698
certificate_get_peers.argtypes = [session_t,
699
ctypes.POINTER(ctypes.c_uint)]
700
certificate_get_peers.restype = ctypes.POINTER(datum_t)
701
702
global_set_log_level = _library.gnutls_global_set_log_level
703
global_set_log_level.argtypes = [ctypes.c_int]
704
global_set_log_level.restype = None
705
706
global_set_log_function = _library.gnutls_global_set_log_function
707
global_set_log_function.argtypes = [log_func]
708
global_set_log_function.restype = None
709
710
deinit = _library.gnutls_deinit
711
deinit.argtypes = [session_t]
712
deinit.restype = None
713
714
handshake = _library.gnutls_handshake
715
handshake.argtypes = [session_t]
716
handshake.restype = _error_code
717
handshake.errcheck = _retry_on_error
718
719
transport_set_ptr = _library.gnutls_transport_set_ptr
720
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
721
transport_set_ptr.restype = None
722
723
bye = _library.gnutls_bye
724
bye.argtypes = [session_t, close_request_t]
725
bye.restype = _error_code
726
bye.errcheck = _retry_on_error
727
728
check_version = _library.gnutls_check_version
729
check_version.argtypes = [ctypes.c_char_p]
730
check_version.restype = ctypes.c_char_p
731
732
_need_version = b"3.3.0"
733
if check_version(_need_version) is None:
734
raise self.Error("Needs GnuTLS {} or later"
735
.format(_need_version))
736
737
_tls_rawpk_version = b"3.6.6"
738
has_rawpk = bool(check_version(_tls_rawpk_version))
739
740
if has_rawpk:
741
# Types
742
class pubkey_st(ctypes.Structure):
743
_fields = []
744
pubkey_t = ctypes.POINTER(pubkey_st)
745
746
x509_crt_fmt_t = ctypes.c_int
747
748
# All the function declarations below are from gnutls/abstract.h
749
pubkey_init = _library.gnutls_pubkey_init
750
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
751
pubkey_init.restype = _error_code
752
753
pubkey_import = _library.gnutls_pubkey_import
754
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
755
x509_crt_fmt_t]
756
pubkey_import.restype = _error_code
757
758
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
759
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
760
ctypes.POINTER(ctypes.c_ubyte),
761
ctypes.POINTER(ctypes.c_size_t)]
762
pubkey_get_key_id.restype = _error_code
763
764
pubkey_deinit = _library.gnutls_pubkey_deinit
765
pubkey_deinit.argtypes = [pubkey_t]
766
pubkey_deinit.restype = None
767
else:
768
# All the function declarations below are from gnutls/openpgp.h
769
770
openpgp_crt_init = _library.gnutls_openpgp_crt_init
771
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
772
openpgp_crt_init.restype = _error_code
773
774
openpgp_crt_import = _library.gnutls_openpgp_crt_import
775
openpgp_crt_import.argtypes = [openpgp_crt_t,
776
ctypes.POINTER(datum_t),
777
openpgp_crt_fmt_t]
778
openpgp_crt_import.restype = _error_code
779
780
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
781
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
782
ctypes.POINTER(ctypes.c_uint)]
783
openpgp_crt_verify_self.restype = _error_code
784
785
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
786
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
787
openpgp_crt_deinit.restype = None
788
789
openpgp_crt_get_fingerprint = (
790
_library.gnutls_openpgp_crt_get_fingerprint)
791
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
792
ctypes.c_void_p,
793
ctypes.POINTER(
794
ctypes.c_size_t)]
795
openpgp_crt_get_fingerprint.restype = _error_code
796
797
if check_version("3.6.4"):
798
certificate_type_get2 = _library.gnutls_certificate_type_get2
799
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
800
certificate_type_get2.restype = _error_code
801
802
# Remove non-public functions
803
del _error_code, _retry_on_error
804
805
806
def call_pipe(connection, # : multiprocessing.Connection
807
func, *args, **kwargs):
808
"""This function is meant to be called by multiprocessing.Process
809
810
This function runs func(*args, **kwargs), and writes the resulting
811
return value on the provided multiprocessing.Connection.
812
"""
813
connection.send(func(*args, **kwargs))
814
connection.close()
815
816
381
def timedelta_to_milliseconds(td):
382
"Convert a datetime.timedelta() to milliseconds"
383
return ((td.days * 24 * 60 * 60 * 1000)
384
+ (td.seconds * 1000)
385
+ (td.microseconds // 1000))
386
817
387
class Client(object):
818
388
"""A representation of a client host served by this server.
819
389
820
390
Attributes:
821
391
approved: bool(); 'None' if not yet approved/disapproved
822
392
approval_delay: datetime.timedelta(); Time to wait for approval
824
394
checker: subprocess.Popen(); a running checker process used
825
395
to see if the client lives.
826
396
'None' if no process is running.
827
checker_callback_tag: a GLib event source tag, or None
397
checker_callback_tag: a gobject event source tag, or None
828
398
checker_command: string; External command which is run to check
829
399
if client lives. %() expansions are done at
830
400
runtime with vars(self) as dict, so that for
831
401
instance %(name)s can be used in the command.
832
checker_initiator_tag: a GLib event source tag, or None
402
checker_initiator_tag: a gobject event source tag, or None
833
403
created: datetime.datetime(); (UTC) object creation
834
404
client_structure: Object describing what attributes a client has
835
405
and is used for storing the client at exit
836
406
current_checker_command: string; current running checker_command
837
disable_initiator_tag: a GLib event source tag, or None
407
disable_initiator_tag: a gobject event source tag, or None
838
408
enabled: bool()
839
409
fingerprint: string (40 or 32 hexadecimal digits); used to
840
uniquely identify an OpenPGP client
841
key_id: string (64 hexadecimal digits); used to uniquely identify
842
a client using raw public keys
410
uniquely identify the client
843
411
host: string; available for use by the checker command
844
412
interval: datetime.timedelta(); How often to start a new checker
845
413
last_approval_request: datetime.datetime(); (UTC) or None
846
414
last_checked_ok: datetime.datetime(); (UTC) or None
415
847
416
last_checker_status: integer between 0 and 255 reflecting exit
848
417
status of last checker. -1 reflects crashed
849
checker, -2 means no checker completed yet.
850
last_checker_signal: The signal which killed the last checker, if
851
last_checker_status is -1
418
checker, or None.
852
419
last_enabled: datetime.datetime(); (UTC) or None
853
420
name: string; from the config file, used in log messages and
854
421
D-Bus identifiers
855
422
secret: bytestring; sent verbatim (over TLS) to client
856
423
timeout: datetime.timedelta(); How long from last_checked_ok
857
424
until this client is disabled
858
extended_timeout: extra long timeout when secret has been sent
425
extended_timeout: extra long timeout when password has been sent
859
426
runtime_expansions: Allowed attributes for runtime expansion.
860
427
expires: datetime.datetime(); time (UTC) when a client will be
861
428
disabled, or None
862
server_settings: The server_settings dict from main()
863
429
"""
864
430
865
431
runtime_expansions = ("approval_delay", "approval_duration",
866
"created", "enabled", "expires", "key_id",
867
"fingerprint", "host", "interval",
868
"last_approval_request", "last_checked_ok",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
869
434
"last_enabled", "name", "timeout")
870
client_defaults = {
871
"timeout": "PT5M",
872
"extended_timeout": "PT15M",
873
"interval": "PT2M",
874
"checker": "fping -q -- %%(host)s",
875
"host": "",
876
"approval_delay": "PT0S",
877
"approval_duration": "PT1S",
878
"approved_by_default": "True",
879
"enabled": "True",
880
}
881
882
@staticmethod
883
def config_parser(config):
884
"""Construct a new dict of client settings of this form:
885
{ client_name: {setting_name: value, ...}, ...}
886
with exceptions for any special settings as defined above.
887
NOTE: Must be a pure function. Must return the same result
888
value given the same arguments.
889
"""
890
settings = {}
891
for client_name in config.sections():
892
section = dict(config.items(client_name))
893
client = settings[client_name] = {}
894
895
client["host"] = section["host"]
896
# Reformat values from string types to Python types
897
client["approved_by_default"] = config.getboolean(
898
client_name, "approved_by_default")
899
client["enabled"] = config.getboolean(client_name,
900
"enabled")
901
902
# Uppercase and remove spaces from key_id and fingerprint
903
# for later comparison purposes with return value from the
904
# key_id() and fingerprint() functions
905
client["key_id"] = (section.get("key_id", "").upper()
906
.replace(" ", ""))
907
client["fingerprint"] = (section["fingerprint"].upper()
908
.replace(" ", ""))
909
if "secret" in section:
910
client["secret"] = codecs.decode(section["secret"]
911
.encode("utf-8"),
912
"base64")
913
elif "secfile" in section:
914
with open(os.path.expanduser(os.path.expandvars
915
(section["secfile"])),
916
"rb") as secfile:
917
client["secret"] = secfile.read()
918
else:
919
raise TypeError("No secret or secfile for section {}"
920
.format(section))
921
client["timeout"] = string_to_delta(section["timeout"])
922
client["extended_timeout"] = string_to_delta(
923
section["extended_timeout"])
924
client["interval"] = string_to_delta(section["interval"])
925
client["approval_delay"] = string_to_delta(
926
section["approval_delay"])
927
client["approval_duration"] = string_to_delta(
928
section["approval_duration"])
929
client["checker_command"] = section["checker"]
930
client["last_approval_request"] = None
931
client["last_checked_ok"] = None
932
client["last_checker_status"] = -2
933
934
return settings
935
936
def __init__(self, settings, name=None, server_settings=None):
435
436
def timeout_milliseconds(self):
437
"Return the 'timeout' attribute in milliseconds"
438
return timedelta_to_milliseconds(self.timeout)
439
440
def extended_timeout_milliseconds(self):
441
"Return the 'extended_timeout' attribute in milliseconds"
442
return timedelta_to_milliseconds(self.extended_timeout)
443
444
def interval_milliseconds(self):
445
"Return the 'interval' attribute in milliseconds"
446
return timedelta_to_milliseconds(self.interval)
447
448
def approval_delay_milliseconds(self):
449
return timedelta_to_milliseconds(self.approval_delay)
450
451
def __init__(self, name = None, config=None):
452
"""Note: the 'checker' key in 'config' sets the
453
'checker_command' attribute and *not* the 'checker'
454
attribute."""
937
455
self.name = name
938
if server_settings is None:
939
server_settings = {}
940
self.server_settings = server_settings
941
# adding all client settings
942
for setting, value in settings.items():
943
setattr(self, setting, value)
944
945
if self.enabled:
946
if not hasattr(self, "last_enabled"):
947
self.last_enabled = datetime.datetime.utcnow()
948
if not hasattr(self, "expires"):
949
self.expires = (datetime.datetime.utcnow()
950
+ self.timeout)
951
else:
952
self.last_enabled = None
953
self.expires = None
954
456
if config is None:
457
config = {}
955
458
logger.debug("Creating client %r", self.name)
956
logger.debug(" Key ID: %s", self.key_id)
459
# Uppercase and remove spaces from fingerprint for later
460
# comparison purposes with return value from the fingerprint()
461
# function
462
self.fingerprint = (config["fingerprint"].upper()
463
.replace(" ", ""))
957
464
logger.debug(" Fingerprint: %s", self.fingerprint)
958
self.created = settings.get("created",
959
datetime.datetime.utcnow())
960
961
# attributes specific for this server instance
465
if "secret" in config:
466
self.secret = config["secret"].decode("base64")
467
elif "secfile" in config:
468
with open(os.path.expanduser(os.path.expandvars
469
(config["secfile"])),
470
"rb") as secfile:
471
self.secret = secfile.read()
472
else:
473
raise TypeError("No secret or secfile for client %s"
474
% self.name)
475
self.host = config.get("host", "")
476
self.created = datetime.datetime.utcnow()
477
self.enabled = config.get("enabled", True)
478
self.last_approval_request = None
479
if self.enabled:
480
self.last_enabled = datetime.datetime.utcnow()
481
else:
482
self.last_enabled = None
483
self.last_checked_ok = None
484
self.last_checker_status = None
485
self.timeout = string_to_delta(config["timeout"])
486
self.extended_timeout = string_to_delta(config
487
["extended_timeout"])
488
self.interval = string_to_delta(config["interval"])
962
489
self.checker = None
963
490
self.checker_initiator_tag = None
964
491
self.disable_initiator_tag = None
492
if self.enabled:
493
self.expires = datetime.datetime.utcnow() + self.timeout
494
else:
495
self.expires = None
965
496
self.checker_callback_tag = None
497
self.checker_command = config["checker"]
966
498
self.current_checker_command = None
967
499
self.approved = None
500
self.approved_by_default = config.get("approved_by_default",
501
True)
968
502
self.approvals_pending = 0
969
self.changedstate = multiprocessing_manager.Condition(
970
multiprocessing_manager.Lock())
971
self.client_structure = [attr
972
for attr in self.__dict__.keys()
503
self.approval_delay = string_to_delta(
504
config["approval_delay"])
505
self.approval_duration = string_to_delta(
506
config["approval_duration"])
507
self.changedstate = (multiprocessing_manager
508
.Condition(multiprocessing_manager
509
.Lock()))
510
self.client_structure = [attr for attr in
511
self.__dict__.iterkeys()
973
512
if not attr.startswith("_")]
974
513
self.client_structure.append("client_structure")
975
976
for name, t in inspect.getmembers(
977
type(self), lambda obj: isinstance(obj, property)):
514
515
for name, t in inspect.getmembers(type(self),
516
lambda obj:
517
isinstance(obj,
518
property)):
978
519
if not name.startswith("_"):
979
520
self.client_structure.append(name)
980
521
981
522
# Send notice to process children that client state has changed
982
523
def send_changedstate(self):
983
524
with self.changedstate:
984
525
self.changedstate.notify_all()
985
526
986
527
def enable(self):
987
528
"""Start this client's checker and timeout hooks"""
988
529
if getattr(self, "enabled", False):
989
530
# Already enabled
990
531
return
532
self.send_changedstate()
991
533
self.expires = datetime.datetime.utcnow() + self.timeout
992
534
self.enabled = True
993
535
self.last_enabled = datetime.datetime.utcnow()
994
536
self.init_checker()
995
self.send_changedstate()
996
537
997
538
def disable(self, quiet=True):
998
539
"""Disable this client."""
999
540
if not getattr(self, "enabled", False):
1000
541
return False
1001
542
if not quiet:
543
self.send_changedstate()
544
if not quiet:
1002
545
logger.info("Disabling client %s", self.name)
1003
if getattr(self, "disable_initiator_tag", None) is not None:
1004
GLib.source_remove(self.disable_initiator_tag)
546
if getattr(self, "disable_initiator_tag", False):
547
gobject.source_remove(self.disable_initiator_tag)
1005
548
self.disable_initiator_tag = None
1006
549
self.expires = None
1007
if getattr(self, "checker_initiator_tag", None) is not None:
1008
GLib.source_remove(self.checker_initiator_tag)
550
if getattr(self, "checker_initiator_tag", False):
551
gobject.source_remove(self.checker_initiator_tag)
1009
552
self.checker_initiator_tag = None
1010
553
self.stop_checker()
1011
554
self.enabled = False
1012
if not quiet:
1013
self.send_changedstate()
1014
# Do not run this again if called by a GLib.timeout_add
555
# Do not run this again if called by a gobject.timeout_add
1015
556
return False
1016
557
1017
558
def __del__(self):
1018
559
self.disable()
1019
560
1020
561
def init_checker(self):
1021
562
# Schedule a new checker to be started an 'interval' from now,
1022
563
# and every interval from then on.
1023
if self.checker_initiator_tag is not None:
1024
GLib.source_remove(self.checker_initiator_tag)
1025
self.checker_initiator_tag = GLib.timeout_add(
1026
int(self.interval.total_seconds() * 1000),
1027
self.start_checker)
564
self.checker_initiator_tag = (gobject.timeout_add
565
(self.interval_milliseconds(),
566
self.start_checker))
1028
567
# Schedule a disable() when 'timeout' has passed
1029
if self.disable_initiator_tag is not None:
1030
GLib.source_remove(self.disable_initiator_tag)
1031
self.disable_initiator_tag = GLib.timeout_add(
1032
int(self.timeout.total_seconds() * 1000), self.disable)
568
self.disable_initiator_tag = (gobject.timeout_add
569
(self.timeout_milliseconds(),
570
self.disable))
1033
571
# Also start a new checker *right now*.
1034
572
self.start_checker()
1035
1036
def checker_callback(self, source, condition, connection,
1037
command):
573
574
def checker_callback(self, pid, condition, command):
1038
575
"""The checker has completed, so take appropriate actions."""
1039
576
self.checker_callback_tag = None
1040
577
self.checker = None
1041
# Read return code from connection (see call_pipe)
1042
returncode = connection.recv()
1043
connection.close()
1044
1045
if returncode >= 0:
1046
self.last_checker_status = returncode
1047
self.last_checker_signal = None
578
if os.WIFEXITED(condition):
579
self.last_checker_status = os.WEXITSTATUS(condition)
1048
580
if self.last_checker_status == 0:
1049
581
logger.info("Checker for %(name)s succeeded",
1050
582
vars(self))
1051
583
self.checked_ok()
1052
584
else:
1053
logger.info("Checker for %(name)s failed", vars(self))
585
logger.info("Checker for %(name)s failed",
586
vars(self))
1054
587
else:
1055
588
self.last_checker_status = -1
1056
self.last_checker_signal = -returncode
1057
589
logger.warning("Checker for %(name)s crashed?",
1058
590
vars(self))
1059
return False
1060
1061
def checked_ok(self):
1062
"""Assert that the client has been seen, alive and well."""
1063
self.last_checked_ok = datetime.datetime.utcnow()
1064
self.last_checker_status = 0
1065
self.last_checker_signal = None
1066
self.bump_timeout()
1067
1068
def bump_timeout(self, timeout=None):
1069
"""Bump up the timeout for this client."""
591
592
def checked_ok(self, timeout=None):
593
"""Bump up the timeout for this client.
594
595
This should only be called when the client has been seen,
596
alive and well.
597
"""
1070
598
if timeout is None:
1071
599
timeout = self.timeout
600
self.last_checked_ok = datetime.datetime.utcnow()
1072
601
if self.disable_initiator_tag is not None:
1073
GLib.source_remove(self.disable_initiator_tag)
1074
self.disable_initiator_tag = None
602
gobject.source_remove(self.disable_initiator_tag)
1075
603
if getattr(self, "enabled", False):
1076
self.disable_initiator_tag = GLib.timeout_add(
1077
int(timeout.total_seconds() * 1000), self.disable)
604
self.disable_initiator_tag = (gobject.timeout_add
605
(timedelta_to_milliseconds
606
(timeout), self.disable))
1078
607
self.expires = datetime.datetime.utcnow() + timeout
1079
608
1080
609
def need_approval(self):
1081
610
self.last_approval_request = datetime.datetime.utcnow()
1082
611
1083
612
def start_checker(self):
1084
613
"""Start a new checker subprocess if one is not running.
1085
614
1086
615
If a checker already exists, leave it running and do
1087
616
nothing."""
1088
617
# The reason for not killing a running checker is that if we
1089
# did that, and if a checker (for some reason) started running
1090
# slowly and taking more than 'interval' time, then the client
1091
# would inevitably timeout, since no checker would get a
1092
# chance to run to completion. If we instead leave running
618
# did that, then if a checker (for some reason) started
619
# running slowly and taking more than 'interval' time, the
620
# client would inevitably timeout, since no checker would get
621
# a chance to run to completion. If we instead leave running
1093
622
# checkers alone, the checker would have to take more time
1094
623
# than 'timeout' for the client to be disabled, which is as it
1095
624
# should be.
1096
1097
if self.checker is not None and not self.checker.is_alive():
1098
logger.warning("Checker was not alive; joining")
1099
self.checker.join()
1100
self.checker = None
625
626
# If a checker exists, make sure it is not a zombie
627
try:
628
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
629
except (AttributeError, OSError) as error:
630
if (isinstance(error, OSError)
631
and error.errno != errno.ECHILD):
632
raise error
633
else:
634
if pid:
635
logger.warning("Checker was a zombie")
636
gobject.source_remove(self.checker_callback_tag)
637
self.checker_callback(pid, status,
638
self.current_checker_command)
1101
639
# Start a new checker if needed
1102
640
if self.checker is None:
1103
# Escape attributes for the shell
1104
escaped_attrs = {
1105
attr: re.escape(str(getattr(self, attr)))
1106
for attr in self.runtime_expansions}
1107
641
try:
1108
command = self.checker_command % escaped_attrs
1109
except TypeError as error:
1110
logger.error('Could not format string "%s"',
1111
self.checker_command,
1112
exc_info=error)
1113
return True # Try again later
642
# In case checker_command has exactly one % operator
643
command = self.checker_command % self.host
644
except TypeError:
645
# Escape attributes for the shell
646
escaped_attrs = dict(
647
(attr,
648
re.escape(unicode(str(getattr(self, attr, "")),
649
errors=
650
'replace')))
651
for attr in
652
self.runtime_expansions)
653
654
try:
655
command = self.checker_command % escaped_attrs
656
except TypeError as error:
657
logger.error('Could not format string "%s":'
658
' %s', self.checker_command, error)
659
return True # Try again later
1114
660
self.current_checker_command = command
1115
logger.info("Starting checker %r for %s", command,
1116
self.name)
1117
# We don't need to redirect stdout and stderr, since
1118
# in normal mode, that is already done by daemon(),
1119
# and in debug mode we don't want to. (Stdin is
1120
# always replaced by /dev/null.)
1121
# The exception is when not debugging but nevertheless
1122
# running in the foreground; use the previously
1123
# created wnull.
1124
popen_args = {"close_fds": True,
1125
"shell": True,
1126
"cwd": "/"}
1127
if (not self.server_settings["debug"]
1128
and self.server_settings["foreground"]):
1129
popen_args.update({"stdout": wnull,
1130
"stderr": wnull})
1131
pipe = multiprocessing.Pipe(duplex=False)
1132
self.checker = multiprocessing.Process(
1133
target=call_pipe,
1134
args=(pipe[1], subprocess.call, command),
1135
kwargs=popen_args)
1136
self.checker.start()
1137
self.checker_callback_tag = GLib.io_add_watch(
1138
pipe[0].fileno(), GLib.IO_IN,
1139
self.checker_callback, pipe[0], command)
1140
# Re-run this periodically if run by GLib.timeout_add
661
try:
662
logger.info("Starting checker %r for %s",
663
command, self.name)
664
# We don't need to redirect stdout and stderr, since
665
# in normal mode, that is already done by daemon(),
666
# and in debug mode we don't want to. (Stdin is
667
# always replaced by /dev/null.)
668
self.checker = subprocess.Popen(command,
669
close_fds=True,
670
shell=True, cwd="/")
671
self.checker_callback_tag = (gobject.child_watch_add
672
(self.checker.pid,
673
self.checker_callback,
674
data=command))
675
# The checker may have completed before the gobject
676
# watch was added. Check for this.
677
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
678
if pid:
679
gobject.source_remove(self.checker_callback_tag)
680
self.checker_callback(pid, status, command)
681
except OSError as error:
682
logger.error("Failed to start subprocess: %s",
683
error)
684
# Re-run this periodically if run by gobject.timeout_add
1141
685
return True
1142
686
1143
687
def stop_checker(self):
1144
688
"""Force the checker process, if any, to stop."""
1145
689
if self.checker_callback_tag:
1146
GLib.source_remove(self.checker_callback_tag)
690
gobject.source_remove(self.checker_callback_tag)
1147
691
self.checker_callback_tag = None
1148
692
if getattr(self, "checker", None) is None:
1149
693
return
1150
694
logger.debug("Stopping checker for %(name)s", vars(self))
1151
self.checker.terminate()
695
try:
696
os.kill(self.checker.pid, signal.SIGTERM)
697
#time.sleep(0.5)
698
#if self.checker.poll() is None:
699
# os.kill(self.checker.pid, signal.SIGKILL)
700
except OSError as error:
701
if error.errno != errno.ESRCH: # No such process
702
raise
1152
703
self.checker = None
1153
704
1154
705
1155
def dbus_service_property(dbus_interface,
1156
signature="v",
1157
access="readwrite",
1158
byte_arrays=False):
706
def dbus_service_property(dbus_interface, signature="v",
707
access="readwrite", byte_arrays=False):
1159
708
"""Decorators for marking methods of a DBusObjectWithProperties to
1160
709
become properties on the D-Bus.
1161
710
1162
711
The decorated method will be called with no arguments by "Get"
1163
712
and with one argument by "Set".
1164
713
1165
714
The parameters, where they are supported, are the same as
1166
715
dbus.service.method, except there is only "signature", since the
1167
716
type from Get() and the type sent to Set() is the same.
1170
719
# "Set" method, so we fail early here:
1171
720
if byte_arrays and signature != "ay":
1172
721
raise ValueError("Byte arrays not supported for non-'ay'"
1173
" signature {!r}".format(signature))
1174
722
" signature %r" % signature)
1175
723
def decorator(func):
1176
724
func._dbus_is_property = True
1177
725
func._dbus_interface = dbus_interface
1180
728
func._dbus_name = func.__name__
1181
729
if func._dbus_name.endswith("_dbus_property"):
1182
730
func._dbus_name = func._dbus_name[:-14]
1183
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1184
return func
1185
1186
return decorator
1187
1188
1189
def dbus_interface_annotations(dbus_interface):
1190
"""Decorator for marking functions returning interface annotations
1191
1192
Usage:
1193
1194
@dbus_interface_annotations("org.example.Interface")
1195
def _foo(self): # Function name does not matter
1196
return {"org.freedesktop.DBus.Deprecated": "true",
1197
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1198
"false"}
1199
"""
1200
1201
def decorator(func):
1202
func._dbus_is_interface = True
1203
func._dbus_interface = dbus_interface
1204
func._dbus_name = dbus_interface
1205
return func
1206
1207
return decorator
1208
1209
1210
def dbus_annotations(annotations):
1211
"""Decorator to annotate D-Bus methods, signals or properties
1212
Usage:
1213
1214
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1215
"org.freedesktop.DBus.Property."
1216
"EmitsChangedSignal": "false"})
1217
@dbus_service_property("org.example.Interface", signature="b",
1218
access="r")
1219
def Property_dbus_property(self):
1220
return dbus.Boolean(False)
1221
1222
See also the DBusObjectWithAnnotations class.
1223
"""
1224
1225
def decorator(func):
1226
func._dbus_annotations = annotations
1227
return func
1228
731
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
732
return func
1229
733
return decorator
1230
734
1231
735
1232
736
class DBusPropertyException(dbus.exceptions.DBusException):
1233
737
"""A base class for D-Bus property-related exceptions
1234
738
"""
1235
pass
739
def __unicode__(self):
740
return unicode(str(self))
1236
741
1237
742
1238
743
class DBusPropertyAccessException(DBusPropertyException):
1247
752
pass
1248
753
1249
754
1250
class DBusObjectWithAnnotations(dbus.service.Object):
1251
"""A D-Bus object with annotations.
1252
1253
Classes inheriting from this can use the dbus_annotations
1254
decorator to add annotations to methods or signals.
1255
"""
1256
1257
@staticmethod
1258
def _is_dbus_thing(thing):
1259
"""Returns a function testing if an attribute is a D-Bus thing
1260
1261
If called like _is_dbus_thing("method") it returns a function
1262
suitable for use as predicate to inspect.getmembers().
1263
"""
1264
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1265
False)
1266
1267
def _get_all_dbus_things(self, thing):
1268
"""Returns a generator of (name, attribute) pairs
1269
"""
1270
return ((getattr(athing.__get__(self), "_dbus_name", name),
1271
athing.__get__(self))
1272
for cls in self.__class__.__mro__
1273
for name, athing in
1274
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1275
1276
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1277
out_signature="s",
1278
path_keyword='object_path',
1279
connection_keyword='connection')
1280
def Introspect(self, object_path, connection):
1281
"""Overloading of standard D-Bus method.
1282
1283
Inserts annotation tags on methods and signals.
1284
"""
1285
xmlstring = dbus.service.Object.Introspect(self, object_path,
1286
connection)
1287
try:
1288
document = xml.dom.minidom.parseString(xmlstring)
1289
1290
for if_tag in document.getElementsByTagName("interface"):
1291
# Add annotation tags
1292
for typ in ("method", "signal"):
1293
for tag in if_tag.getElementsByTagName(typ):
1294
annots = dict()
1295
for name, prop in (self.
1296
_get_all_dbus_things(typ)):
1297
if (name == tag.getAttribute("name")
1298
and prop._dbus_interface
1299
== if_tag.getAttribute("name")):
1300
annots.update(getattr(
1301
prop, "_dbus_annotations", {}))
1302
for name, value in annots.items():
1303
ann_tag = document.createElement(
1304
"annotation")
1305
ann_tag.setAttribute("name", name)
1306
ann_tag.setAttribute("value", value)
1307
tag.appendChild(ann_tag)
1308
# Add interface annotation tags
1309
for annotation, value in dict(
1310
itertools.chain.from_iterable(
1311
annotations().items()
1312
for name, annotations
1313
in self._get_all_dbus_things("interface")
1314
if name == if_tag.getAttribute("name")
1315
)).items():
1316
ann_tag = document.createElement("annotation")
1317
ann_tag.setAttribute("name", annotation)
1318
ann_tag.setAttribute("value", value)
1319
if_tag.appendChild(ann_tag)
1320
# Fix argument name for the Introspect method itself
1321
if (if_tag.getAttribute("name")
1322
== dbus.INTROSPECTABLE_IFACE):
1323
for cn in if_tag.getElementsByTagName("method"):
1324
if cn.getAttribute("name") == "Introspect":
1325
for arg in cn.getElementsByTagName("arg"):
1326
if (arg.getAttribute("direction")
1327
== "out"):
1328
arg.setAttribute("name",
1329
"xml_data")
1330
xmlstring = document.toxml("utf-8")
1331
document.unlink()
1332
except (AttributeError, xml.dom.DOMException,
1333
xml.parsers.expat.ExpatError) as error:
1334
logger.error("Failed to override Introspection method",
1335
exc_info=error)
1336
return xmlstring
1337
1338
1339
class DBusObjectWithProperties(DBusObjectWithAnnotations):
755
class DBusObjectWithProperties(dbus.service.Object):
1340
756
"""A D-Bus object with properties.
1341
757
1342
758
Classes inheriting from this can use the dbus_service_property
1343
759
decorator to expose methods as D-Bus properties. It exposes the
1344
760
standard Get(), Set(), and GetAll() methods on the D-Bus.
1345
761
"""
1346
762
763
@staticmethod
764
def _is_dbus_property(obj):
765
return getattr(obj, "_dbus_is_property", False)
766
767
def _get_all_dbus_properties(self):
768
"""Returns a generator of (name, attribute) pairs
769
"""
770
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
771
for cls in self.__class__.__mro__
772
for name, prop in
773
inspect.getmembers(cls, self._is_dbus_property))
774
1347
775
def _get_dbus_property(self, interface_name, property_name):
1348
776
"""Returns a bound method if one exists which is a D-Bus
1349
777
property with the specified name and interface.
1350
778
"""
1351
for cls in self.__class__.__mro__:
1352
for name, value in inspect.getmembers(
1353
cls, self._is_dbus_thing("property")):
779
for cls in self.__class__.__mro__:
780
for name, value in (inspect.getmembers
781
(cls, self._is_dbus_property)):
1354
782
if (value._dbus_name == property_name
1355
783
and value._dbus_interface == interface_name):
1356
784
return value.__get__(self)
1357
785
1358
786
# No such property
1359
raise DBusPropertyNotFound("{}:{}.{}".format(
1360
self.dbus_object_path, interface_name, property_name))
1361
1362
@classmethod
1363
def _get_all_interface_names(cls):
1364
"""Get a sequence of all interfaces supported by an object"""
1365
return (name for name in set(getattr(getattr(x, attr),
1366
"_dbus_interface", None)
1367
for x in (inspect.getmro(cls))
1368
for attr in dir(x))
1369
if name is not None)
1370
1371
@dbus.service.method(dbus.PROPERTIES_IFACE,
1372
in_signature="ss",
787
raise DBusPropertyNotFound(self.dbus_object_path + ":"
788
+ interface_name + "."
789
+ property_name)
790
791
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1373
792
out_signature="v")
1374
793
def Get(self, interface_name, property_name):
1375
794
"""Standard D-Bus property Get() method, see D-Bus standard.
1381
800
if not hasattr(value, "variant_level"):
1382
801
return value
1383
802
return type(value)(value, variant_level=value.variant_level+1)
1384
803
1385
804
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1386
805
def Set(self, interface_name, property_name, value):
1387
806
"""Standard D-Bus property Set() method, see D-Bus standard.
1393
812
# The byte_arrays option is not supported yet on
1394
813
# signatures other than "ay".
1395
814
if prop._dbus_signature != "ay":
1396
raise ValueError("Byte arrays not supported for non-"
1397
"'ay' signature {!r}"
1398
.format(prop._dbus_signature))
1399
value = dbus.ByteArray(b''.join(chr(byte)
1400
for byte in value))
815
raise ValueError
816
value = dbus.ByteArray(''.join(unichr(byte)
817
for byte in value))
1401
818
prop(value)
1402
1403
@dbus.service.method(dbus.PROPERTIES_IFACE,
1404
in_signature="s",
819
820
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1405
821
out_signature="a{sv}")
1406
822
def GetAll(self, interface_name):
1407
823
"""Standard D-Bus property GetAll() method, see D-Bus
1408
824
standard.
1409
825
1410
826
Note: Will not include properties with access="write".
1411
827
"""
1412
828
properties = {}
1413
for name, prop in self._get_all_dbus_things("property"):
829
for name, prop in self._get_all_dbus_properties():
1414
830
if (interface_name
1415
831
and interface_name != prop._dbus_interface):
1416
832
# Interface non-empty but did not match
1422
838
if not hasattr(value, "variant_level"):
1423
839
properties[name] = value
1424
840
continue
1425
properties[name] = type(value)(
1426
value, variant_level=value.variant_level + 1)
841
properties[name] = type(value)(value, variant_level=
842
value.variant_level+1)
1427
843
return dbus.Dictionary(properties, signature="sv")
1428
1429
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1430
def PropertiesChanged(self, interface_name, changed_properties,
1431
invalidated_properties):
1432
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1433
standard.
1434
"""
1435
pass
1436
844
1437
845
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1438
846
out_signature="s",
1439
847
path_keyword='object_path',
1440
848
connection_keyword='connection')
1441
849
def Introspect(self, object_path, connection):
1442
"""Overloading of standard D-Bus method.
1443
1444
Inserts property tags and interface annotation tags.
850
"""Standard D-Bus method, overloaded to insert property tags.
1445
851
"""
1446
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1447
object_path,
1448
connection)
852
xmlstring = dbus.service.Object.Introspect(self, object_path,
853
connection)
1449
854
try:
1450
855
document = xml.dom.minidom.parseString(xmlstring)
1451
1452
856
def make_tag(document, name, prop):
1453
857
e = document.createElement("property")
1454
858
e.setAttribute("name", name)
1455
859
e.setAttribute("type", prop._dbus_signature)
1456
860
e.setAttribute("access", prop._dbus_access)
1457
861
return e
1458
1459
862
for if_tag in document.getElementsByTagName("interface"):
1460
# Add property tags
1461
863
for tag in (make_tag(document, name, prop)
1462
864
for name, prop
1463
in self._get_all_dbus_things("property")
865
in self._get_all_dbus_properties()
1464
866
if prop._dbus_interface
1465
867
== if_tag.getAttribute("name")):
1466
868
if_tag.appendChild(tag)
1467
# Add annotation tags for properties
1468
for tag in if_tag.getElementsByTagName("property"):
1469
annots = dict()
1470
for name, prop in self._get_all_dbus_things(
1471
"property"):
1472
if (name == tag.getAttribute("name")
1473
and prop._dbus_interface
1474
== if_tag.getAttribute("name")):
1475
annots.update(getattr(
1476
prop, "_dbus_annotations", {}))
1477
for name, value in annots.items():
1478
ann_tag = document.createElement(
1479
"annotation")
1480
ann_tag.setAttribute("name", name)
1481
ann_tag.setAttribute("value", value)
1482
tag.appendChild(ann_tag)
1483
869
# Add the names to the return values for the
1484
870
# "org.freedesktop.DBus.Properties" methods
1485
871
if (if_tag.getAttribute("name")
1500
886
except (AttributeError, xml.dom.DOMException,
1501
887
xml.parsers.expat.ExpatError) as error:
1502
888
logger.error("Failed to override Introspection method",
1503
exc_info=error)
1504
return xmlstring
1505
1506
1507
try:
1508
dbus.OBJECT_MANAGER_IFACE
1509
except AttributeError:
1510
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1511
1512
1513
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1514
"""A D-Bus object with an ObjectManager.
1515
1516
Classes inheriting from this exposes the standard
1517
GetManagedObjects call and the InterfacesAdded and
1518
InterfacesRemoved signals on the standard
1519
"org.freedesktop.DBus.ObjectManager" interface.
1520
1521
Note: No signals are sent automatically; they must be sent
1522
manually.
1523
"""
1524
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1525
out_signature="a{oa{sa{sv}}}")
1526
def GetManagedObjects(self):
1527
"""This function must be overridden"""
1528
raise NotImplementedError()
1529
1530
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1531
signature="oa{sa{sv}}")
1532
def InterfacesAdded(self, object_path, interfaces_and_properties):
1533
pass
1534
1535
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1536
def InterfacesRemoved(self, object_path, interfaces):
1537
pass
1538
1539
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1540
out_signature="s",
1541
path_keyword='object_path',
1542
connection_keyword='connection')
1543
def Introspect(self, object_path, connection):
1544
"""Overloading of standard D-Bus method.
1545
1546
Override return argument name of GetManagedObjects to be
1547
"objpath_interfaces_and_properties"
1548
"""
1549
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1550
object_path,
1551
connection)
1552
try:
1553
document = xml.dom.minidom.parseString(xmlstring)
1554
1555
for if_tag in document.getElementsByTagName("interface"):
1556
# Fix argument name for the GetManagedObjects method
1557
if (if_tag.getAttribute("name")
1558
== dbus.OBJECT_MANAGER_IFACE):
1559
for cn in if_tag.getElementsByTagName("method"):
1560
if (cn.getAttribute("name")
1561
== "GetManagedObjects"):
1562
for arg in cn.getElementsByTagName("arg"):
1563
if (arg.getAttribute("direction")
1564
== "out"):
1565
arg.setAttribute(
1566
"name",
1567
"objpath_interfaces"
1568
"_and_properties")
1569
xmlstring = document.toxml("utf-8")
1570
document.unlink()
1571
except (AttributeError, xml.dom.DOMException,
1572
xml.parsers.expat.ExpatError) as error:
1573
logger.error("Failed to override Introspection method",
1574
exc_info=error)
1575
return xmlstring
1576
1577
1578
def datetime_to_dbus(dt, variant_level=0):
889
error)
890
return xmlstring
891
892
893
def datetime_to_dbus (dt, variant_level=0):
1579
894
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1580
895
if dt is None:
1581
return dbus.String("", variant_level=variant_level)
1582
return dbus.String(dt.isoformat(), variant_level=variant_level)
1583
1584
1585
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1586
"""A class decorator; applied to a subclass of
1587
dbus.service.Object, it will add alternate D-Bus attributes with
1588
interface names according to the "alt_interface_names" mapping.
1589
Usage:
1590
1591
@alternate_dbus_interfaces({"org.example.Interface":
1592
"net.example.AlternateInterface"})
1593
class SampleDBusObject(dbus.service.Object):
1594
@dbus.service.method("org.example.Interface")
1595
def SampleDBusMethod():
1596
pass
1597
1598
The above "SampleDBusMethod" on "SampleDBusObject" will be
1599
reachable via two interfaces: "org.example.Interface" and
1600
"net.example.AlternateInterface", the latter of which will have
1601
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1602
"true", unless "deprecate" is passed with a False value.
1603
1604
This works for methods and signals, and also for D-Bus properties
1605
(from DBusObjectWithProperties) and interfaces (from the
1606
dbus_interface_annotations decorator).
896
return dbus.String("", variant_level = variant_level)
897
return dbus.String(dt.isoformat(),
898
variant_level=variant_level)
899
900
901
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
902
.__metaclass__):
903
"""Applied to an empty subclass of a D-Bus object, this metaclass
904
will add additional D-Bus attributes matching a certain pattern.
1607
905
"""
1608
1609
def wrapper(cls):
1610
for orig_interface_name, alt_interface_name in (
1611
alt_interface_names.items()):
1612
attr = {}
1613
interface_names = set()
1614
# Go though all attributes of the class
1615
for attrname, attribute in inspect.getmembers(cls):
906
def __new__(mcs, name, bases, attr):
907
# Go through all the base classes which could have D-Bus
908
# methods, signals, or properties in them
909
for base in (b for b in bases
910
if issubclass(b, dbus.service.Object)):
911
# Go though all attributes of the base class
912
for attrname, attribute in inspect.getmembers(base):
1616
913
# Ignore non-D-Bus attributes, and D-Bus attributes
1617
914
# with the wrong interface name
1618
915
if (not hasattr(attribute, "_dbus_interface")
1619
or not attribute._dbus_interface.startswith(
1620
orig_interface_name)):
916
or not attribute._dbus_interface
917
.startswith("se.recompile.Mandos")):
1621
918
continue
1622
919
# Create an alternate D-Bus interface name based on
1623
920
# the current name
1624
alt_interface = attribute._dbus_interface.replace(
1625
orig_interface_name, alt_interface_name)
1626
interface_names.add(alt_interface)
921
alt_interface = (attribute._dbus_interface
922
.replace("se.recompile.Mandos",
923
"se.bsnet.fukt.Mandos"))
1627
924
# Is this a D-Bus signal?
1628
925
if getattr(attribute, "_dbus_is_signal", False):
1629
# Extract the original non-method undecorated
1630
# function by black magic
1631
if sys.version_info.major == 2:
1632
nonmethod_func = (dict(
926
# Extract the original non-method function by
927
# black magic
928
nonmethod_func = (dict(
1633
929
zip(attribute.func_code.co_freevars,
1634
attribute.__closure__))
1635
["func"].cell_contents)
1636
else:
1637
nonmethod_func = (dict(
1638
zip(attribute.__code__.co_freevars,
1639
attribute.__closure__))
1640
["func"].cell_contents)
930
attribute.__closure__))["func"]
931
.cell_contents)
1641
932
# Create a new, but exactly alike, function
1642
933
# object, and decorate it to be a new D-Bus signal
1643
934
# with the alternate D-Bus interface name
1644
new_function = copy_function(nonmethod_func)
1645
new_function = (dbus.service.signal(
1646
alt_interface,
1647
attribute._dbus_signature)(new_function))
1648
# Copy annotations, if any
1649
try:
1650
new_function._dbus_annotations = dict(
1651
attribute._dbus_annotations)
1652
except AttributeError:
1653
pass
1654
935
new_function = (dbus.service.signal
936
(alt_interface,
937
attribute._dbus_signature)
938
(types.FunctionType(
939
nonmethod_func.func_code,
940
nonmethod_func.func_globals,
941
nonmethod_func.func_name,
942
nonmethod_func.func_defaults,
943
nonmethod_func.func_closure)))
1655
944
# Define a creator of a function to call both the
1656
# original and alternate functions, so both the
1657
# original and alternate signals gets sent when
1658
# the function is called
945
# old and new functions, so both the old and new
946
# signals gets sent when the function is called
1659
947
def fixscope(func1, func2):
1660
948
"""This function is a scope container to pass
1661
949
func1 and func2 to the "call_both" function
1662
950
outside of its arguments"""
1663
1664
@functools.wraps(func2)
1665
951
def call_both(*args, **kwargs):
1666
952
"""This function will emit two D-Bus
1667
953
signals by calling func1 and func2"""
1668
954
func1(*args, **kwargs)
1669
955
func2(*args, **kwargs)
1670
# Make wrapper function look like a D-Bus
1671
# signal
1672
for name, attr in inspect.getmembers(func2):
1673
if name.startswith("_dbus_"):
1674
setattr(call_both, name, attr)
1675
1676
956
return call_both
1677
957
# Create the "call_both" function and add it to
1678
958
# the class
1679
attr[attrname] = fixscope(attribute, new_function)
959
attr[attrname] = fixscope(attribute,
960
new_function)
1680
961
# Is this a D-Bus method?
1681
962
elif getattr(attribute, "_dbus_is_method", False):
1682
963
# Create a new, but exactly alike, function
1683
964
# object. Decorate it to be a new D-Bus method
1684
965
# with the alternate D-Bus interface name. Add it
1685
966
# to the class.
1686
attr[attrname] = (
1687
dbus.service.method(
1688
alt_interface,
1689
attribute._dbus_in_signature,
1690
attribute._dbus_out_signature)
1691
(copy_function(attribute)))
1692
# Copy annotations, if any
1693
try:
1694
attr[attrname]._dbus_annotations = dict(
1695
attribute._dbus_annotations)
1696
except AttributeError:
1697
pass
967
attr[attrname] = (dbus.service.method
968
(alt_interface,
969
attribute._dbus_in_signature,
970
attribute._dbus_out_signature)
971
(types.FunctionType
972
(attribute.func_code,
973
attribute.func_globals,
974
attribute.func_name,
975
attribute.func_defaults,
976
attribute.func_closure)))
1698
977
# Is this a D-Bus property?
1699
978
elif getattr(attribute, "_dbus_is_property", False):
1700
979
# Create a new, but exactly alike, function
1701
980
# object, and decorate it to be a new D-Bus
1702
981
# property with the alternate D-Bus interface
1703
982
# name. Add it to the class.
1704
attr[attrname] = (dbus_service_property(
1705
alt_interface, attribute._dbus_signature,
1706
attribute._dbus_access,
1707
attribute._dbus_get_args_options
1708
["byte_arrays"])
1709
(copy_function(attribute)))
1710
# Copy annotations, if any
1711
try:
1712
attr[attrname]._dbus_annotations = dict(
1713
attribute._dbus_annotations)
1714
except AttributeError:
1715
pass
1716
# Is this a D-Bus interface?
1717
elif getattr(attribute, "_dbus_is_interface", False):
1718
# Create a new, but exactly alike, function
1719
# object. Decorate it to be a new D-Bus interface
1720
# with the alternate D-Bus interface name. Add it
1721
# to the class.
1722
attr[attrname] = (
1723
dbus_interface_annotations(alt_interface)
1724
(copy_function(attribute)))
1725
if deprecate:
1726
# Deprecate all alternate interfaces
1727
iname = "_AlternateDBusNames_interface_annotation{}"
1728
for interface_name in interface_names:
1729
1730
@dbus_interface_annotations(interface_name)
1731
def func(self):
1732
return {"org.freedesktop.DBus.Deprecated":
1733
"true"}
1734
# Find an unused name
1735
for aname in (iname.format(i)
1736
for i in itertools.count()):
1737
if aname not in attr:
1738
attr[aname] = func
1739
break
1740
if interface_names:
1741
# Replace the class with a new subclass of it with
1742
# methods, signals, etc. as created above.
1743
if sys.version_info.major == 2:
1744
cls = type(b"{}Alternate".format(cls.__name__),
1745
(cls, ), attr)
1746
else:
1747
cls = type("{}Alternate".format(cls.__name__),
1748
(cls, ), attr)
1749
return cls
1750
1751
return wrapper
1752
1753
1754
@alternate_dbus_interfaces({"se.recompile.Mandos":
1755
"se.bsnet.fukt.Mandos"})
983
attr[attrname] = (dbus_service_property
984
(alt_interface,
985
attribute._dbus_signature,
986
attribute._dbus_access,
987
attribute
988
._dbus_get_args_options
989
["byte_arrays"])
990
(types.FunctionType
991
(attribute.func_code,
992
attribute.func_globals,
993
attribute.func_name,
994
attribute.func_defaults,
995
attribute.func_closure)))
996
return type.__new__(mcs, name, bases, attr)
997
998
1756
999
class ClientDBus(Client, DBusObjectWithProperties):
1757
1000
"""A Client class using D-Bus
1758
1001
1759
1002
Attributes:
1760
1003
dbus_object_path: dbus.ObjectPath
1761
1004
bus: dbus.SystemBus()
1762
1005
"""
1763
1006
1764
1007
runtime_expansions = (Client.runtime_expansions
1765
+ ("dbus_object_path", ))
1766
1767
_interface = "se.recompile.Mandos.Client"
1768
1008
+ ("dbus_object_path",))
1009
1769
1010
# dbus.service.Object doesn't use super(), so we can't either.
1770
1771
def __init__(self, bus=None, *args, **kwargs):
1011
1012
def __init__(self, bus = None, *args, **kwargs):
1772
1013
self.bus = bus
1773
1014
Client.__init__(self, *args, **kwargs)
1015
1016
self._approvals_pending = 0
1774
1017
# Only now, when this client is initialized, can it show up on
1775
1018
# the D-Bus
1776
client_object_name = str(self.name).translate(
1019
client_object_name = unicode(self.name).translate(
1777
1020
{ord("."): ord("_"),
1778
1021
ord("-"): ord("_")})
1779
self.dbus_object_path = dbus.ObjectPath(
1780
"/clients/" + client_object_name)
1022
self.dbus_object_path = (dbus.ObjectPath
1023
("/clients/" + client_object_name))
1781
1024
DBusObjectWithProperties.__init__(self, self.bus,
1782
1025
self.dbus_object_path)
1783
1784
def notifychangeproperty(transform_func, dbus_name,
1785
type_func=lambda x: x,
1786
variant_level=1,
1787
invalidate_only=False,
1788
_interface=_interface):
1026
1027
def notifychangeproperty(transform_func,
1028
dbus_name, type_func=lambda x: x,
1029
variant_level=1):
1789
1030
""" Modify a variable so that it's a property which announces
1790
1031
its changes to DBus.
1791
1032
1792
1033
transform_fun: Function that takes a value and a variant_level
1793
1034
and transforms it to a D-Bus type.
1794
1035
dbus_name: D-Bus name of the variable
1796
1037
to the D-Bus. Default: no transform
1797
1038
variant_level: D-Bus variant level. Default: 1
1798
1039
"""
1799
attrname = "_{}".format(dbus_name)
1800
1040
attrname = "_{0}".format(dbus_name)
1801
1041
def setter(self, value):
1802
1042
if hasattr(self, "dbus_object_path"):
1803
1043
if (not hasattr(self, attrname) or
1804
1044
type_func(getattr(self, attrname, None))
1805
1045
!= type_func(value)):
1806
if invalidate_only:
1807
self.PropertiesChanged(
1808
_interface, dbus.Dictionary(),
1809
dbus.Array((dbus_name, )))
1810
else:
1811
dbus_value = transform_func(
1812
type_func(value),
1813
variant_level=variant_level)
1814
self.PropertyChanged(dbus.String(dbus_name),
1815
dbus_value)
1816
self.PropertiesChanged(
1817
_interface,
1818
dbus.Dictionary({dbus.String(dbus_name):
1819
dbus_value}),
1820
dbus.Array())
1046
dbus_value = transform_func(type_func(value),
1047
variant_level
1048
=variant_level)
1049
self.PropertyChanged(dbus.String(dbus_name),
1050
dbus_value)
1821
1051
setattr(self, attrname, value)
1822
1052
1823
1053
return property(lambda self: getattr(self, attrname), setter)
1824
1054
1055
1825
1056
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1826
1057
approvals_pending = notifychangeproperty(dbus.Boolean,
1827
1058
"ApprovalPending",
1828
type_func=bool)
1059
type_func = bool)
1829
1060
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1830
1061
last_enabled = notifychangeproperty(datetime_to_dbus,
1831
1062
"LastEnabled")
1832
checker = notifychangeproperty(
1833
dbus.Boolean, "CheckerRunning",
1834
type_func=lambda checker: checker is not None)
1063
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1064
type_func = lambda checker:
1065
checker is not None)
1835
1066
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1836
1067
"LastCheckedOK")
1837
last_checker_status = notifychangeproperty(dbus.Int16,
1838
"LastCheckerStatus")
1839
1068
last_approval_request = notifychangeproperty(
1840
1069
datetime_to_dbus, "LastApprovalRequest")
1841
1070
approved_by_default = notifychangeproperty(dbus.Boolean,
1842
1071
"ApprovedByDefault")
1843
approval_delay = notifychangeproperty(
1844
dbus.UInt64, "ApprovalDelay",
1845
type_func=lambda td: td.total_seconds() * 1000)
1072
approval_delay = notifychangeproperty(dbus.UInt64,
1073
"ApprovalDelay",
1074
type_func =
1075
timedelta_to_milliseconds)
1846
1076
approval_duration = notifychangeproperty(
1847
1077
dbus.UInt64, "ApprovalDuration",
1848
type_func=lambda td: td.total_seconds() * 1000)
1078
type_func = timedelta_to_milliseconds)
1849
1079
host = notifychangeproperty(dbus.String, "Host")
1850
timeout = notifychangeproperty(
1851
dbus.UInt64, "Timeout",
1852
type_func=lambda td: td.total_seconds() * 1000)
1080
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1081
type_func =
1082
timedelta_to_milliseconds)
1853
1083
extended_timeout = notifychangeproperty(
1854
1084
dbus.UInt64, "ExtendedTimeout",
1855
type_func=lambda td: td.total_seconds() * 1000)
1856
interval = notifychangeproperty(
1857
dbus.UInt64, "Interval",
1858
type_func=lambda td: td.total_seconds() * 1000)
1085
type_func = timedelta_to_milliseconds)
1086
interval = notifychangeproperty(dbus.UInt64,
1087
"Interval",
1088
type_func =
1089
timedelta_to_milliseconds)
1859
1090
checker_command = notifychangeproperty(dbus.String, "Checker")
1860
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1861
invalidate_only=True)
1862
1091
1863
1092
del notifychangeproperty
1864
1093
1865
1094
def __del__(self, *args, **kwargs):
1866
1095
try:
1867
1096
self.remove_from_connection()
1870
1099
if hasattr(DBusObjectWithProperties, "__del__"):
1871
1100
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1872
1101
Client.__del__(self, *args, **kwargs)
1873
1874
def checker_callback(self, source, condition,
1875
connection, command, *args, **kwargs):
1876
ret = Client.checker_callback(self, source, condition,
1877
connection, command, *args,
1878
**kwargs)
1879
exitstatus = self.last_checker_status
1880
if exitstatus >= 0:
1102
1103
def checker_callback(self, pid, condition, command,
1104
*args, **kwargs):
1105
self.checker_callback_tag = None
1106
self.checker = None
1107
if os.WIFEXITED(condition):
1108
exitstatus = os.WEXITSTATUS(condition)
1881
1109
# Emit D-Bus signal
1882
1110
self.CheckerCompleted(dbus.Int16(exitstatus),
1883
# This is specific to GNU libC
1884
dbus.Int64(exitstatus << 8),
1111
dbus.Int64(condition),
1885
1112
dbus.String(command))
1886
1113
else:
1887
1114
# Emit D-Bus signal
1888
1115
self.CheckerCompleted(dbus.Int16(-1),
1889
dbus.Int64(
1890
# This is specific to GNU libC
1891
(exitstatus << 8)
1892
| self.last_checker_signal),
1116
dbus.Int64(condition),
1893
1117
dbus.String(command))
1894
return ret
1895
1118
1119
return Client.checker_callback(self, pid, condition, command,
1120
*args, **kwargs)
1121
1896
1122
def start_checker(self, *args, **kwargs):
1897
old_checker_pid = getattr(self.checker, "pid", None)
1123
old_checker = self.checker
1124
if self.checker is not None:
1125
old_checker_pid = self.checker.pid
1126
else:
1127
old_checker_pid = None
1898
1128
r = Client.start_checker(self, *args, **kwargs)
1899
1129
# Only if new checker process was started
1900
1130
if (self.checker is not None
1902
1132
# Emit D-Bus signal
1903
1133
self.CheckerStarted(self.current_checker_command)
1904
1134
return r
1905
1135
1906
1136
def _reset_approved(self):
1907
1137
self.approved = None
1908
1138
return False
1909
1139
1910
1140
def approve(self, value=True):
1141
self.send_changedstate()
1911
1142
self.approved = value
1912
GLib.timeout_add(int(self.approval_duration.total_seconds()
1913
* 1000), self._reset_approved)
1914
self.send_changedstate()
1915
1916
# D-Bus methods, signals & properties
1917
1918
# Interfaces
1919
1920
# Signals
1921
1143
gobject.timeout_add(timedelta_to_milliseconds
1144
(self.approval_duration),
1145
self._reset_approved)
1146
1147
1148
## D-Bus methods, signals & properties
1149
_interface = "se.recompile.Mandos.Client"
1150
1151
## Signals
1152
1922
1153
# CheckerCompleted - signal
1923
1154
@dbus.service.signal(_interface, signature="nxs")
1924
1155
def CheckerCompleted(self, exitcode, waitstatus, command):
1925
1156
"D-Bus signal"
1926
1157
pass
1927
1158
1928
1159
# CheckerStarted - signal
1929
1160
@dbus.service.signal(_interface, signature="s")
1930
1161
def CheckerStarted(self, command):
1931
1162
"D-Bus signal"
1932
1163
pass
1933
1164
1934
1165
# PropertyChanged - signal
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1936
1166
@dbus.service.signal(_interface, signature="sv")
1937
1167
def PropertyChanged(self, property, value):
1938
1168
"D-Bus signal"
1939
1169
pass
1940
1170
1941
1171
# GotSecret - signal
1942
1172
@dbus.service.signal(_interface)
1943
1173
def GotSecret(self):
1946
1176
server to mandos-client
1947
1177
"""
1948
1178
pass
1949
1179
1950
1180
# Rejected - signal
1951
1181
@dbus.service.signal(_interface, signature="s")
1952
1182
def Rejected(self, reason):
1953
1183
"D-Bus signal"
1954
1184
pass
1955
1185
1956
1186
# NeedApproval - signal
1957
1187
@dbus.service.signal(_interface, signature="tb")
1958
1188
def NeedApproval(self, timeout, default):
1959
1189
"D-Bus signal"
1960
1190
return self.need_approval()
1961
1962
# Methods
1963
1191
1192
# NeRwequest - signal
1193
@dbus.service.signal(_interface, signature="s")
1194
def NewRequest(self, ip):
1195
"""D-Bus signal
1196
Is sent after a client request a password.
1197
"""
1198
pass
1199
1200
## Methods
1201
1964
1202
# Approve - method
1965
1203
@dbus.service.method(_interface, in_signature="b")
1966
1204
def Approve(self, value):
1967
1205
self.approve(value)
1968
1206
1969
1207
# CheckedOK - method
1970
1208
@dbus.service.method(_interface)
1971
1209
def CheckedOK(self):
1972
1210
self.checked_ok()
1973
1211
1974
1212
# Enable - method
1975
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1976
1213
@dbus.service.method(_interface)
1977
1214
def Enable(self):
1978
1215
"D-Bus method"
1979
1216
self.enable()
1980
1217
1981
1218
# StartChecker - method
1982
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1983
1219
@dbus.service.method(_interface)
1984
1220
def StartChecker(self):
1985
1221
"D-Bus method"
1986
1222
self.start_checker()
1987
1223
1988
1224
# Disable - method
1989
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1990
1225
@dbus.service.method(_interface)
1991
1226
def Disable(self):
1992
1227
"D-Bus method"
1993
1228
self.disable()
1994
1229
1995
1230
# StopChecker - method
1996
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1997
1231
@dbus.service.method(_interface)
1998
1232
def StopChecker(self):
1999
1233
self.stop_checker()
2000
2001
# Properties
2002
1234
1235
## Properties
1236
2003
1237
# ApprovalPending - property
2004
1238
@dbus_service_property(_interface, signature="b", access="read")
2005
1239
def ApprovalPending_dbus_property(self):
2006
1240
return dbus.Boolean(bool(self.approvals_pending))
2007
1241
2008
1242
# ApprovedByDefault - property
2009
@dbus_service_property(_interface,
2010
signature="b",
1243
@dbus_service_property(_interface, signature="b",
2011
1244
access="readwrite")
2012
1245
def ApprovedByDefault_dbus_property(self, value=None):
2013
1246
if value is None: # get
2014
1247
return dbus.Boolean(self.approved_by_default)
2015
1248
self.approved_by_default = bool(value)
2016
1249
2017
1250
# ApprovalDelay - property
2018
@dbus_service_property(_interface,
2019
signature="t",
1251
@dbus_service_property(_interface, signature="t",
2020
1252
access="readwrite")
2021
1253
def ApprovalDelay_dbus_property(self, value=None):
2022
1254
if value is None: # get
2023
return dbus.UInt64(self.approval_delay.total_seconds()
2024
* 1000)
1255
return dbus.UInt64(self.approval_delay_milliseconds())
2025
1256
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2026
1257
2027
1258
# ApprovalDuration - property
2028
@dbus_service_property(_interface,
2029
signature="t",
1259
@dbus_service_property(_interface, signature="t",
2030
1260
access="readwrite")
2031
1261
def ApprovalDuration_dbus_property(self, value=None):
2032
1262
if value is None: # get
2033
return dbus.UInt64(self.approval_duration.total_seconds()
2034
* 1000)
1263
return dbus.UInt64(timedelta_to_milliseconds(
1264
self.approval_duration))
2035
1265
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2036
1266
2037
1267
# Name - property
2038
@dbus_annotations(
2039
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2040
1268
@dbus_service_property(_interface, signature="s", access="read")
2041
1269
def Name_dbus_property(self):
2042
1270
return dbus.String(self.name)
2043
2044
# KeyID - property
2045
@dbus_annotations(
2046
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2047
@dbus_service_property(_interface, signature="s", access="read")
2048
def KeyID_dbus_property(self):
2049
return dbus.String(self.key_id)
2050
1271
2051
1272
# Fingerprint - property
2052
@dbus_annotations(
2053
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2054
1273
@dbus_service_property(_interface, signature="s", access="read")
2055
1274
def Fingerprint_dbus_property(self):
2056
1275
return dbus.String(self.fingerprint)
2057
1276
2058
1277
# Host - property
2059
@dbus_service_property(_interface,
2060
signature="s",
1278
@dbus_service_property(_interface, signature="s",
2061
1279
access="readwrite")
2062
1280
def Host_dbus_property(self, value=None):
2063
1281
if value is None: # get
2064
1282
return dbus.String(self.host)
2065
self.host = str(value)
2066
1283
self.host = unicode(value)
1284
2067
1285
# Created - property
2068
@dbus_annotations(
2069
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2070
1286
@dbus_service_property(_interface, signature="s", access="read")
2071
1287
def Created_dbus_property(self):
2072
1288
return datetime_to_dbus(self.created)
2073
1289
2074
1290
# LastEnabled - property
2075
1291
@dbus_service_property(_interface, signature="s", access="read")
2076
1292
def LastEnabled_dbus_property(self):
2077
1293
return datetime_to_dbus(self.last_enabled)
2078
1294
2079
1295
# Enabled - property
2080
@dbus_service_property(_interface,
2081
signature="b",
1296
@dbus_service_property(_interface, signature="b",
2082
1297
access="readwrite")
2083
1298
def Enabled_dbus_property(self, value=None):
2084
1299
if value is None: # get
2087
1302
self.enable()
2088
1303
else:
2089
1304
self.disable()
2090
1305
2091
1306
# LastCheckedOK - property
2092
@dbus_service_property(_interface,
2093
signature="s",
1307
@dbus_service_property(_interface, signature="s",
2094
1308
access="readwrite")
2095
1309
def LastCheckedOK_dbus_property(self, value=None):
2096
1310
if value is not None:
2097
1311
self.checked_ok()
2098
1312
return
2099
1313
return datetime_to_dbus(self.last_checked_ok)
2100
2101
# LastCheckerStatus - property
2102
@dbus_service_property(_interface, signature="n", access="read")
2103
def LastCheckerStatus_dbus_property(self):
2104
return dbus.Int16(self.last_checker_status)
2105
1314
2106
1315
# Expires - property
2107
1316
@dbus_service_property(_interface, signature="s", access="read")
2108
1317
def Expires_dbus_property(self):
2109
1318
return datetime_to_dbus(self.expires)
2110
1319
2111
1320
# LastApprovalRequest - property
2112
1321
@dbus_service_property(_interface, signature="s", access="read")
2113
1322
def LastApprovalRequest_dbus_property(self):
2114
1323
return datetime_to_dbus(self.last_approval_request)
2115
1324
2116
1325
# Timeout - property
2117
@dbus_service_property(_interface,
2118
signature="t",
1326
@dbus_service_property(_interface, signature="t",
2119
1327
access="readwrite")
2120
1328
def Timeout_dbus_property(self, value=None):
2121
1329
if value is None: # get
2122
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2123
old_timeout = self.timeout
1330
return dbus.UInt64(self.timeout_milliseconds())
2124
1331
self.timeout = datetime.timedelta(0, 0, 0, value)
2125
# Reschedule disabling
2126
if self.enabled:
2127
now = datetime.datetime.utcnow()
2128
self.expires += self.timeout - old_timeout
2129
if self.expires <= now:
2130
# The timeout has passed
2131
self.disable()
2132
else:
2133
if (getattr(self, "disable_initiator_tag", None)
2134
is None):
2135
return
2136
GLib.source_remove(self.disable_initiator_tag)
2137
self.disable_initiator_tag = GLib.timeout_add(
2138
int((self.expires - now).total_seconds() * 1000),
2139
self.disable)
2140
1332
if getattr(self, "disable_initiator_tag", None) is None:
1333
return
1334
# Reschedule timeout
1335
gobject.source_remove(self.disable_initiator_tag)
1336
self.disable_initiator_tag = None
1337
self.expires = None
1338
time_to_die = timedelta_to_milliseconds((self
1339
.last_checked_ok
1340
+ self.timeout)
1341
- datetime.datetime
1342
.utcnow())
1343
if time_to_die <= 0:
1344
# The timeout has passed
1345
self.disable()
1346
else:
1347
self.expires = (datetime.datetime.utcnow()
1348
+ datetime.timedelta(milliseconds =
1349
time_to_die))
1350
self.disable_initiator_tag = (gobject.timeout_add
1351
(time_to_die, self.disable))
1352
2141
1353
# ExtendedTimeout - property
2142
@dbus_service_property(_interface,
2143
signature="t",
1354
@dbus_service_property(_interface, signature="t",
2144
1355
access="readwrite")
2145
1356
def ExtendedTimeout_dbus_property(self, value=None):
2146
1357
if value is None: # get
2147
return dbus.UInt64(self.extended_timeout.total_seconds()
2148
* 1000)
1358
return dbus.UInt64(self.extended_timeout_milliseconds())
2149
1359
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2150
1360
2151
1361
# Interval - property
2152
@dbus_service_property(_interface,
2153
signature="t",
1362
@dbus_service_property(_interface, signature="t",
2154
1363
access="readwrite")
2155
1364
def Interval_dbus_property(self, value=None):
2156
1365
if value is None: # get
2157
return dbus.UInt64(self.interval.total_seconds() * 1000)
1366
return dbus.UInt64(self.interval_milliseconds())
2158
1367
self.interval = datetime.timedelta(0, 0, 0, value)
2159
1368
if getattr(self, "checker_initiator_tag", None) is None:
2160
1369
return
2161
1370
if self.enabled:
2162
1371
# Reschedule checker run
2163
GLib.source_remove(self.checker_initiator_tag)
2164
self.checker_initiator_tag = GLib.timeout_add(
2165
value, self.start_checker)
2166
self.start_checker() # Start one now, too
2167
1372
gobject.source_remove(self.checker_initiator_tag)
1373
self.checker_initiator_tag = (gobject.timeout_add
1374
(value, self.start_checker))
1375
self.start_checker() # Start one now, too
1376
2168
1377
# Checker - property
2169
@dbus_service_property(_interface,
2170
signature="s",
1378
@dbus_service_property(_interface, signature="s",
2171
1379
access="readwrite")
2172
1380
def Checker_dbus_property(self, value=None):
2173
1381
if value is None: # get
2174
1382
return dbus.String(self.checker_command)
2175
self.checker_command = str(value)
2176
1383
self.checker_command = unicode(value)
1384
2177
1385
# CheckerRunning - property
2178
@dbus_service_property(_interface,
2179
signature="b",
1386
@dbus_service_property(_interface, signature="b",
2180
1387
access="readwrite")
2181
1388
def CheckerRunning_dbus_property(self, value=None):
2182
1389
if value is None: # get
2185
1392
self.start_checker()
2186
1393
else:
2187
1394
self.stop_checker()
2188
1395
2189
1396
# ObjectPath - property
2190
@dbus_annotations(
2191
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2192
"org.freedesktop.DBus.Deprecated": "true"})
2193
1397
@dbus_service_property(_interface, signature="o", access="read")
2194
1398
def ObjectPath_dbus_property(self):
2195
return self.dbus_object_path # is already a dbus.ObjectPath
2196
1399
return self.dbus_object_path # is already a dbus.ObjectPath
1400
2197
1401
# Secret = property
2198
@dbus_annotations(
2199
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2200
"invalidates"})
2201
@dbus_service_property(_interface,
2202
signature="ay",
2203
access="write",
2204
byte_arrays=True)
1402
@dbus_service_property(_interface, signature="ay",
1403
access="write", byte_arrays=True)
2205
1404
def Secret_dbus_property(self, value):
2206
self.secret = bytes(value)
2207
1405
self.secret = str(value)
1406
2208
1407
del _interface
2209
1408
2210
1409
2211
1410
class ProxyClient(object):
2212
def __init__(self, child_pipe, key_id, fpr, address):
1411
def __init__(self, child_pipe, fpr, address):
2213
1412
self._pipe = child_pipe
2214
self._pipe.send(('init', key_id, fpr, address))
1413
self._pipe.send(('init', fpr, address))
2215
1414
if not self._pipe.recv():
2216
raise KeyError(key_id or fpr)
2217
1415
raise KeyError()
1416
2218
1417
def __getattribute__(self, name):
2219
1418
if name == '_pipe':
2220
1419
return super(ProxyClient, self).__getattribute__(name)
2223
1422
if data[0] == 'data':
2224
1423
return data[1]
2225
1424
if data[0] == 'function':
2226
2227
1425
def func(*args, **kwargs):
2228
1426
self._pipe.send(('funcall', name, args, kwargs))
2229
1427
return self._pipe.recv()[1]
2230
2231
1428
return func
2232
1429
2233
1430
def __setattr__(self, name, value):
2234
1431
if name == '_pipe':
2235
1432
return super(ProxyClient, self).__setattr__(name, value)
2236
1433
self._pipe.send(('setattr', name, value))
2237
1434
2238
1435
1436
class ClientDBusTransitional(ClientDBus):
1437
__metaclass__ = AlternateDBusNamesMetaclass
1438
1439
2239
1440
class ClientHandler(socketserver.BaseRequestHandler, object):
2240
1441
"""A class to handle client connections.
2241
1442
2242
1443
Instantiated once for each connection to handle it.
2243
1444
Note: This will run in its own forked process."""
2244
1445
2245
1446
def handle(self):
2246
1447
with contextlib.closing(self.server.child_pipe) as child_pipe:
2247
1448
logger.info("TCP connection from: %s",
2248
str(self.client_address))
1449
unicode(self.client_address))
2249
1450
logger.debug("Pipe FD: %d",
2250
1451
self.server.child_pipe.fileno())
2251
2252
session = gnutls.ClientSession(self.request)
2253
2254
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2255
# "+AES-256-CBC", "+SHA1",
2256
# "+COMP-NULL", "+CTYPE-OPENPGP",
2257
# "+DHE-DSS"))
1452
1453
session = (gnutls.connection
1454
.ClientSession(self.request,
1455
gnutls.connection
1456
.X509Credentials()))
1457
1458
# Note: gnutls.connection.X509Credentials is really a
1459
# generic GnuTLS certificate credentials object so long as
1460
# no X.509 keys are added to it. Therefore, we can use it
1461
# here despite using OpenPGP certificates.
1462
1463
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1464
# "+AES-256-CBC", "+SHA1",
1465
# "+COMP-NULL", "+CTYPE-OPENPGP",
1466
# "+DHE-DSS"))
2258
1467
# Use a fallback default, since this MUST be set.
2259
1468
priority = self.server.gnutls_priority
2260
1469
if priority is None:
2261
1470
priority = "NORMAL"
2262
gnutls.priority_set_direct(session._c_object,
2263
priority.encode("utf-8"),
2264
None)
2265
1471
(gnutls.library.functions
1472
.gnutls_priority_set_direct(session._c_object,
1473
priority, None))
1474
2266
1475
# Start communication using the Mandos protocol
2267
1476
# Get protocol number
2268
1477
line = self.request.makefile().readline()
2269
1478
logger.debug("Protocol version: %r", line)
2270
1479
try:
2271
1480
if int(line.strip().split()[0]) > 1:
2272
raise RuntimeError(line)
1481
raise RuntimeError
2273
1482
except (ValueError, IndexError, RuntimeError) as error:
2274
1483
logger.error("Unknown protocol version: %s", error)
2275
1484
return
2276
1485
2277
1486
# Start GnuTLS connection
2278
1487
try:
2279
1488
session.handshake()
2280
except gnutls.Error as error:
1489
except gnutls.errors.GNUTLSError as error:
2281
1490
logger.warning("Handshake failed: %s", error)
2282
1491
# Do not run session.bye() here: the session is not
2283
1492
# established. Just abandon the request.
2284
1493
return
2285
1494
logger.debug("Handshake succeeded")
2286
1495
2287
1496
approval_required = False
2288
1497
try:
2289
if gnutls.has_rawpk:
2290
fpr = ""
2291
try:
2292
key_id = self.key_id(
2293
self.peer_certificate(session))
2294
except (TypeError, gnutls.Error) as error:
2295
logger.warning("Bad certificate: %s", error)
2296
return
2297
logger.debug("Key ID: %s", key_id)
2298
2299
else:
2300
key_id = ""
2301
try:
2302
fpr = self.fingerprint(
2303
self.peer_certificate(session))
2304
except (TypeError, gnutls.Error) as error:
2305
logger.warning("Bad certificate: %s", error)
2306
return
2307
logger.debug("Fingerprint: %s", fpr)
2308
2309
try:
2310
client = ProxyClient(child_pipe, key_id, fpr,
1498
try:
1499
fpr = self.fingerprint(self.peer_certificate
1500
(session))
1501
except (TypeError,
1502
gnutls.errors.GNUTLSError) as error:
1503
logger.warning("Bad certificate: %s", error)
1504
return
1505
logger.debug("Fingerprint: %s", fpr)
1506
1507
try:
1508
client = ProxyClient(child_pipe, fpr,
2311
1509
self.client_address)
2312
1510
except KeyError:
2313
1511
return
2314
1512
1513
if self.server.use_dbus:
1514
# Emit D-Bus signal
1515
client.NewRequest(str(self.client_address))
1516
2315
1517
if client.approval_delay:
2316
1518
delay = client.approval_delay
2317
1519
client.approvals_pending += 1
2318
1520
approval_required = True
2319
1521
2320
1522
while True:
2321
1523
if not client.enabled:
2322
1524
logger.info("Client %s is disabled",
2323
client.name)
1525
client.name)
2324
1526
if self.server.use_dbus:
2325
1527
# Emit D-Bus signal
2326
1528
client.Rejected("Disabled")
2327
1529
return
2328
1530
2329
1531
if client.approved or not client.approval_delay:
2330
# We are approved or approval is disabled
1532
#We are approved or approval is disabled
2331
1533
break
2332
1534
elif client.approved is None:
2333
1535
logger.info("Client %s needs approval",
2335
1537
if self.server.use_dbus:
2336
1538
# Emit D-Bus signal
2337
1539
client.NeedApproval(
2338
client.approval_delay.total_seconds()
2339
* 1000, client.approved_by_default)
1540
client.approval_delay_milliseconds(),
1541
client.approved_by_default)
2340
1542
else:
2341
1543
logger.warning("Client %s was not approved",
2342
1544
client.name)
2344
1546
# Emit D-Bus signal
2345
1547
client.Rejected("Denied")
2346
1548
return
2347
2348
# wait until timeout or approved
1549
1550
#wait until timeout or approved
2349
1551
time = datetime.datetime.now()
2350
1552
client.changedstate.acquire()
2351
client.changedstate.wait(delay.total_seconds())
1553
(client.changedstate.wait
1554
(float(client.timedelta_to_milliseconds(delay)
1555
/ 1000)))
2352
1556
client.changedstate.release()
2353
1557
time2 = datetime.datetime.now()
2354
1558
if (time2 - time) >= delay:
2364
1568
break
2365
1569
else:
2366
1570
delay -= time2 - time
2367
2368
try:
2369
session.send(client.secret)
2370
except gnutls.Error as error:
2371
logger.warning("gnutls send failed",
2372
exc_info=error)
2373
return
2374
1571
1572
sent_size = 0
1573
while sent_size < len(client.secret):
1574
try:
1575
sent = session.send(client.secret[sent_size:])
1576
except gnutls.errors.GNUTLSError as error:
1577
logger.warning("gnutls send failed")
1578
return
1579
logger.debug("Sent: %d, remaining: %d",
1580
sent, len(client.secret)
1581
- (sent_size + sent))
1582
sent_size += sent
1583
2375
1584
logger.info("Sending secret to %s", client.name)
2376
1585
# bump the timeout using extended_timeout
2377
client.bump_timeout(client.extended_timeout)
1586
client.checked_ok(client.extended_timeout)
2378
1587
if self.server.use_dbus:
2379
1588
# Emit D-Bus signal
2380
1589
client.GotSecret()
2381
1590
2382
1591
finally:
2383
1592
if approval_required:
2384
1593
client.approvals_pending -= 1
2385
1594
try:
2386
1595
session.bye()
2387
except gnutls.Error as error:
2388
logger.warning("GnuTLS bye failed",
2389
exc_info=error)
2390
1596
except gnutls.errors.GNUTLSError as error:
1597
logger.warning("GnuTLS bye failed")
1598
2391
1599
@staticmethod
2392
1600
def peer_certificate(session):
2393
"Return the peer's certificate as a bytestring"
2394
try:
2395
cert_type = gnutls.certificate_type_get2(session._c_object,
2396
gnutls.CTYPE_PEERS)
2397
except AttributeError:
2398
cert_type = gnutls.certificate_type_get(session._c_object)
2399
if gnutls.has_rawpk:
2400
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2401
else:
2402
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2403
# If not a valid certificate type...
2404
if cert_type not in valid_cert_types:
2405
logger.info("Cert type %r not in %r", cert_type,
2406
valid_cert_types)
2407
# ...return invalid data
2408
return b""
1601
"Return the peer's OpenPGP certificate as a bytestring"
1602
# If not an OpenPGP certificate...
1603
if (gnutls.library.functions
1604
.gnutls_certificate_type_get(session._c_object)
1605
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1606
# ...do the normal thing
1607
return session.peer_certificate
2409
1608
list_size = ctypes.c_uint(1)
2410
cert_list = (gnutls.certificate_get_peers
1609
cert_list = (gnutls.library.functions
1610
.gnutls_certificate_get_peers
2411
1611
(session._c_object, ctypes.byref(list_size)))
2412
1612
if not bool(cert_list) and list_size.value != 0:
2413
raise gnutls.Error("error getting peer certificate")
1613
raise gnutls.errors.GNUTLSError("error getting peer"
1614
" certificate")
2414
1615
if list_size.value == 0:
2415
1616
return None
2416
1617
cert = cert_list[0]
2417
1618
return ctypes.string_at(cert.data, cert.size)
2418
2419
@staticmethod
2420
def key_id(certificate):
2421
"Convert a certificate bytestring to a hexdigit key ID"
2422
# New GnuTLS "datum" with the public key
2423
datum = gnutls.datum_t(
2424
ctypes.cast(ctypes.c_char_p(certificate),
2425
ctypes.POINTER(ctypes.c_ubyte)),
2426
ctypes.c_uint(len(certificate)))
2427
# XXX all these need to be created in the gnutls "module"
2428
# New empty GnuTLS certificate
2429
pubkey = gnutls.pubkey_t()
2430
gnutls.pubkey_init(ctypes.byref(pubkey))
2431
# Import the raw public key into the certificate
2432
gnutls.pubkey_import(pubkey,
2433
ctypes.byref(datum),
2434
gnutls.X509_FMT_DER)
2435
# New buffer for the key ID
2436
buf = ctypes.create_string_buffer(32)
2437
buf_len = ctypes.c_size_t(len(buf))
2438
# Get the key ID from the raw public key into the buffer
2439
gnutls.pubkey_get_key_id(pubkey,
2440
gnutls.KEYID_USE_SHA256,
2441
ctypes.cast(ctypes.byref(buf),
2442
ctypes.POINTER(ctypes.c_ubyte)),
2443
ctypes.byref(buf_len))
2444
# Deinit the certificate
2445
gnutls.pubkey_deinit(pubkey)
2446
2447
# Convert the buffer to a Python bytestring
2448
key_id = ctypes.string_at(buf, buf_len.value)
2449
# Convert the bytestring to hexadecimal notation
2450
hex_key_id = binascii.hexlify(key_id).upper()
2451
return hex_key_id
2452
1619
2453
1620
@staticmethod
2454
1621
def fingerprint(openpgp):
2455
1622
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2456
1623
# New GnuTLS "datum" with the OpenPGP public key
2457
datum = gnutls.datum_t(
2458
ctypes.cast(ctypes.c_char_p(openpgp),
2459
ctypes.POINTER(ctypes.c_ubyte)),
2460
ctypes.c_uint(len(openpgp)))
1624
datum = (gnutls.library.types
1625
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1626
ctypes.POINTER
1627
(ctypes.c_ubyte)),
1628
ctypes.c_uint(len(openpgp))))
2461
1629
# New empty GnuTLS certificate
2462
crt = gnutls.openpgp_crt_t()
2463
gnutls.openpgp_crt_init(ctypes.byref(crt))
1630
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1631
(gnutls.library.functions
1632
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2464
1633
# Import the OpenPGP public key into the certificate
2465
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2466
gnutls.OPENPGP_FMT_RAW)
1634
(gnutls.library.functions
1635
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1636
gnutls.library.constants
1637
.GNUTLS_OPENPGP_FMT_RAW))
2467
1638
# Verify the self signature in the key
2468
1639
crtverify = ctypes.c_uint()
2469
gnutls.openpgp_crt_verify_self(crt, 0,
2470
ctypes.byref(crtverify))
1640
(gnutls.library.functions
1641
.gnutls_openpgp_crt_verify_self(crt, 0,
1642
ctypes.byref(crtverify)))
2471
1643
if crtverify.value != 0:
2472
gnutls.openpgp_crt_deinit(crt)
2473
raise gnutls.CertificateSecurityError(code
2474
=crtverify.value)
1644
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1645
raise (gnutls.errors.CertificateSecurityError
1646
("Verify failed"))
2475
1647
# New buffer for the fingerprint
2476
1648
buf = ctypes.create_string_buffer(20)
2477
1649
buf_len = ctypes.c_size_t()
2478
1650
# Get the fingerprint from the certificate into the buffer
2479
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2480
ctypes.byref(buf_len))
1651
(gnutls.library.functions
1652
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1653
ctypes.byref(buf_len)))
2481
1654
# Deinit the certificate
2482
gnutls.openpgp_crt_deinit(crt)
1655
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2483
1656
# Convert the buffer to a Python bytestring
2484
1657
fpr = ctypes.string_at(buf, buf_len.value)
2485
1658
# Convert the bytestring to hexadecimal notation
2489
1662
2490
1663
class MultiprocessingMixIn(object):
2491
1664
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2492
2493
1665
def sub_process_main(self, request, address):
2494
1666
try:
2495
1667
self.finish_request(request, address)
2496
except Exception:
1668
except:
2497
1669
self.handle_error(request, address)
2498
1670
self.close_request(request)
2499
1671
2500
1672
def process_request(self, request, address):
2501
1673
"""Start a new process to process the request."""
2502
proc = multiprocessing.Process(target=self.sub_process_main,
2503
args=(request, address))
1674
proc = multiprocessing.Process(target = self.sub_process_main,
1675
args = (request,
1676
address))
2504
1677
proc.start()
2505
1678
return proc
2506
1679
2507
1680
2508
1681
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2509
1682
""" adds a pipe to the MixIn """
2510
2511
1683
def process_request(self, request, client_address):
2512
1684
"""Overrides and wraps the original process_request().
2513
1685
2514
1686
This function creates a new pipe in self.pipe
2515
1687
"""
2516
1688
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2517
1689
2518
1690
proc = MultiprocessingMixIn.process_request(self, request,
2519
1691
client_address)
2520
1692
self.child_pipe.close()
2521
1693
self.add_pipe(parent_pipe, proc)
2522
1694
2523
1695
def add_pipe(self, parent_pipe, proc):
2524
1696
"""Dummy function; override as necessary"""
2525
raise NotImplementedError()
1697
raise NotImplementedError
2526
1698
2527
1699
2528
1700
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2529
1701
socketserver.TCPServer, object):
2530
1702
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2531
1703
2532
1704
Attributes:
2533
1705
enabled: Boolean; whether this server is activated yet
2534
1706
interface: None or a network interface name (string)
2535
1707
use_ipv6: Boolean; to use IPv6 or not
2536
1708
"""
2537
2538
1709
def __init__(self, server_address, RequestHandlerClass,
2539
interface=None,
2540
use_ipv6=True,
2541
socketfd=None):
2542
"""If socketfd is set, use that file descriptor instead of
2543
creating a new one with socket.socket().
2544
"""
1710
interface=None, use_ipv6=True):
2545
1711
self.interface = interface
2546
1712
if use_ipv6:
2547
1713
self.address_family = socket.AF_INET6
2548
if socketfd is not None:
2549
# Save the file descriptor
2550
self.socketfd = socketfd
2551
# Save the original socket.socket() function
2552
self.socket_socket = socket.socket
2553
2554
# To implement --socket, we monkey patch socket.socket.
2555
#
2556
# (When socketserver.TCPServer is a new-style class, we
2557
# could make self.socket into a property instead of monkey
2558
# patching socket.socket.)
2559
#
2560
# Create a one-time-only replacement for socket.socket()
2561
@functools.wraps(socket.socket)
2562
def socket_wrapper(*args, **kwargs):
2563
# Restore original function so subsequent calls are
2564
# not affected.
2565
socket.socket = self.socket_socket
2566
del self.socket_socket
2567
# This time only, return a new socket object from the
2568
# saved file descriptor.
2569
return socket.fromfd(self.socketfd, *args, **kwargs)
2570
# Replace socket.socket() function with wrapper
2571
socket.socket = socket_wrapper
2572
# The socketserver.TCPServer.__init__ will call
2573
# socket.socket(), which might be our replacement,
2574
# socket_wrapper(), if socketfd was set.
2575
1714
socketserver.TCPServer.__init__(self, server_address,
2576
1715
RequestHandlerClass)
2577
2578
1716
def server_bind(self):
2579
1717
"""This overrides the normal server_bind() function
2580
1718
to bind to an interface if one was specified, and also NOT to
2581
1719
bind to an address or port if they were not specified."""
2582
global SO_BINDTODEVICE
2583
1720
if self.interface is not None:
2584
1721
if SO_BINDTODEVICE is None:
2585
# Fall back to a hard-coded value which seems to be
2586
# common enough.
2587
logger.warning("SO_BINDTODEVICE not found, trying 25")
2588
SO_BINDTODEVICE = 25
2589
try:
2590
self.socket.setsockopt(
2591
socket.SOL_SOCKET, SO_BINDTODEVICE,
2592
(self.interface + "\0").encode("utf-8"))
2593
except socket.error as error:
2594
if error.errno == errno.EPERM:
2595
logger.error("No permission to bind to"
2596
" interface %s", self.interface)
2597
elif error.errno == errno.ENOPROTOOPT:
2598
logger.error("SO_BINDTODEVICE not available;"
2599
" cannot bind to interface %s",
2600
self.interface)
2601
elif error.errno == errno.ENODEV:
2602
logger.error("Interface %s does not exist,"
2603
" cannot bind", self.interface)
2604
else:
2605
raise
1722
logger.error("SO_BINDTODEVICE does not exist;"
1723
" cannot bind to interface %s",
1724
self.interface)
1725
else:
1726
try:
1727
self.socket.setsockopt(socket.SOL_SOCKET,
1728
SO_BINDTODEVICE,
1729
str(self.interface
1730
+ '\0'))
1731
except socket.error as error:
1732
if error[0] == errno.EPERM:
1733
logger.error("No permission to"
1734
" bind to interface %s",
1735
self.interface)
1736
elif error[0] == errno.ENOPROTOOPT:
1737
logger.error("SO_BINDTODEVICE not available;"
1738
" cannot bind to interface %s",
1739
self.interface)
1740
else:
1741
raise
2606
1742
# Only bind(2) the socket if we really need to.
2607
1743
if self.server_address[0] or self.server_address[1]:
2608
1744
if not self.server_address[0]:
2609
1745
if self.address_family == socket.AF_INET6:
2610
any_address = "::" # in6addr_any
1746
any_address = "::" # in6addr_any
2611
1747
else:
2612
any_address = "0.0.0.0" # INADDR_ANY
1748
any_address = socket.INADDR_ANY
2613
1749
self.server_address = (any_address,
2614
1750
self.server_address[1])
2615
1751
elif not self.server_address[1]:
2616
self.server_address = (self.server_address[0], 0)
1752
self.server_address = (self.server_address[0],
1753
0)
2617
1754
# if self.interface:
2618
1755
# self.server_address = (self.server_address[0],
2619
1756
# 0, # port
2625
1762
2626
1763
class MandosServer(IPv6_TCPServer):
2627
1764
"""Mandos server.
2628
1765
2629
1766
Attributes:
2630
1767
clients: set of Client objects
2631
1768
gnutls_priority GnuTLS priority string
2632
1769
use_dbus: Boolean; to emit D-Bus signals or not
2633
2634
Assumes a GLib.MainLoop event loop.
1770
1771
Assumes a gobject.MainLoop event loop.
2635
1772
"""
2636
2637
1773
def __init__(self, server_address, RequestHandlerClass,
2638
interface=None,
2639
use_ipv6=True,
2640
clients=None,
2641
gnutls_priority=None,
2642
use_dbus=True,
2643
socketfd=None):
1774
interface=None, use_ipv6=True, clients=None,
1775
gnutls_priority=None, use_dbus=True):
2644
1776
self.enabled = False
2645
1777
self.clients = clients
2646
1778
if self.clients is None:
2649
1781
self.gnutls_priority = gnutls_priority
2650
1782
IPv6_TCPServer.__init__(self, server_address,
2651
1783
RequestHandlerClass,
2652
interface=interface,
2653
use_ipv6=use_ipv6,
2654
socketfd=socketfd)
2655
1784
interface = interface,
1785
use_ipv6 = use_ipv6)
2656
1786
def server_activate(self):
2657
1787
if self.enabled:
2658
1788
return socketserver.TCPServer.server_activate(self)
2659
1789
2660
1790
def enable(self):
2661
1791
self.enabled = True
2662
1792
2663
1793
def add_pipe(self, parent_pipe, proc):
2664
1794
# Call "handle_ipc" for both data and EOF events
2665
GLib.io_add_watch(
2666
parent_pipe.fileno(),
2667
GLib.IO_IN | GLib.IO_HUP,
2668
functools.partial(self.handle_ipc,
2669
parent_pipe=parent_pipe,
2670
proc=proc))
2671
2672
def handle_ipc(self, source, condition,
2673
parent_pipe=None,
2674
proc=None,
2675
client_object=None):
1795
gobject.io_add_watch(parent_pipe.fileno(),
1796
gobject.IO_IN | gobject.IO_HUP,
1797
functools.partial(self.handle_ipc,
1798
parent_pipe =
1799
parent_pipe,
1800
proc = proc))
1801
1802
def handle_ipc(self, source, condition, parent_pipe=None,
1803
proc = None, client_object=None):
1804
condition_names = {
1805
gobject.IO_IN: "IN", # There is data to read.
1806
gobject.IO_OUT: "OUT", # Data can be written (without
1807
# blocking).
1808
gobject.IO_PRI: "PRI", # There is urgent data to read.
1809
gobject.IO_ERR: "ERR", # Error condition.
1810
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1811
# broken, usually for pipes and
1812
# sockets).
1813
}
1814
conditions_string = ' | '.join(name
1815
for cond, name in
1816
condition_names.iteritems()
1817
if cond & condition)
2676
1818
# error, or the other end of multiprocessing.Pipe has closed
2677
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1819
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2678
1820
# Wait for other process to exit
2679
1821
proc.join()
2680
1822
return False
2681
1823
2682
1824
# Read a request from the child
2683
1825
request = parent_pipe.recv()
2684
1826
command = request[0]
2685
1827
2686
1828
if command == 'init':
2687
key_id = request[1].decode("ascii")
2688
fpr = request[2].decode("ascii")
2689
address = request[3]
2690
2691
for c in self.clients.values():
2692
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2693
continue
2694
if key_id and c.key_id == key_id:
2695
client = c
2696
break
2697
if fpr and c.fingerprint == fpr:
1829
fpr = request[1]
1830
address = request[2]
1831
1832
for c in self.clients.itervalues():
1833
if c.fingerprint == fpr:
2698
1834
client = c
2699
1835
break
2700
1836
else:
2701
logger.info("Client not found for key ID: %s, address"
2702
": %s", key_id or fpr, address)
1837
logger.info("Client not found for fingerprint: %s, ad"
1838
"dress: %s", fpr, address)
2703
1839
if self.use_dbus:
2704
1840
# Emit D-Bus signal
2705
mandos_dbus_service.ClientNotFound(key_id or fpr,
1841
mandos_dbus_service.ClientNotFound(fpr,
2706
1842
address[0])
2707
1843
parent_pipe.send(False)
2708
1844
return False
2709
2710
GLib.io_add_watch(
2711
parent_pipe.fileno(),
2712
GLib.IO_IN | GLib.IO_HUP,
2713
functools.partial(self.handle_ipc,
2714
parent_pipe=parent_pipe,
2715
proc=proc,
2716
client_object=client))
1845
1846
gobject.io_add_watch(parent_pipe.fileno(),
1847
gobject.IO_IN | gobject.IO_HUP,
1848
functools.partial(self.handle_ipc,
1849
parent_pipe =
1850
parent_pipe,
1851
proc = proc,
1852
client_object =
1853
client))
2717
1854
parent_pipe.send(True)
2718
1855
# remove the old hook in favor of the new above hook on
2719
1856
# same fileno
2722
1859
funcname = request[1]
2723
1860
args = request[2]
2724
1861
kwargs = request[3]
2725
1862
2726
1863
parent_pipe.send(('data', getattr(client_object,
2727
1864
funcname)(*args,
2728
**kwargs)))
2729
1865
**kwargs)))
1866
2730
1867
if command == 'getattr':
2731
1868
attrname = request[1]
2732
if isinstance(client_object.__getattribute__(attrname),
2733
collections.Callable):
2734
parent_pipe.send(('function', ))
1869
if callable(client_object.__getattribute__(attrname)):
1870
parent_pipe.send(('function',))
2735
1871
else:
2736
parent_pipe.send((
2737
'data', client_object.__getattribute__(attrname)))
2738
1872
parent_pipe.send(('data', client_object
1873
.__getattribute__(attrname)))
1874
2739
1875
if command == 'setattr':
2740
1876
attrname = request[1]
2741
1877
value = request[2]
2742
1878
setattr(client_object, attrname, value)
2743
1879
2744
1880
return True
2745
1881
2746
1882
2747
def rfc3339_duration_to_delta(duration):
2748
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2749
2750
>>> rfc3339_duration_to_delta("P7D")
2751
datetime.timedelta(7)
2752
>>> rfc3339_duration_to_delta("PT60S")
2753
datetime.timedelta(0, 60)
2754
>>> rfc3339_duration_to_delta("PT60M")
2755
datetime.timedelta(0, 3600)
2756
>>> rfc3339_duration_to_delta("PT24H")
2757
datetime.timedelta(1)
2758
>>> rfc3339_duration_to_delta("P1W")
2759
datetime.timedelta(7)
2760
>>> rfc3339_duration_to_delta("PT5M30S")
2761
datetime.timedelta(0, 330)
2762
>>> rfc3339_duration_to_delta("P1DT3M20S")
2763
datetime.timedelta(1, 200)
2764
"""
2765
2766
# Parsing an RFC 3339 duration with regular expressions is not
2767
# possible - there would have to be multiple places for the same
2768
# values, like seconds. The current code, while more esoteric, is
2769
# cleaner without depending on a parsing library. If Python had a
2770
# built-in library for parsing we would use it, but we'd like to
2771
# avoid excessive use of external libraries.
2772
2773
# New type for defining tokens, syntax, and semantics all-in-one
2774
Token = collections.namedtuple("Token", (
2775
"regexp", # To match token; if "value" is not None, must have
2776
# a "group" containing digits
2777
"value", # datetime.timedelta or None
2778
"followers")) # Tokens valid after this token
2779
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2780
# the "duration" ABNF definition in RFC 3339, Appendix A.
2781
token_end = Token(re.compile(r"$"), None, frozenset())
2782
token_second = Token(re.compile(r"(\d+)S"),
2783
datetime.timedelta(seconds=1),
2784
frozenset((token_end, )))
2785
token_minute = Token(re.compile(r"(\d+)M"),
2786
datetime.timedelta(minutes=1),
2787
frozenset((token_second, token_end)))
2788
token_hour = Token(re.compile(r"(\d+)H"),
2789
datetime.timedelta(hours=1),
2790
frozenset((token_minute, token_end)))
2791
token_time = Token(re.compile(r"T"),
2792
None,
2793
frozenset((token_hour, token_minute,
2794
token_second)))
2795
token_day = Token(re.compile(r"(\d+)D"),
2796
datetime.timedelta(days=1),
2797
frozenset((token_time, token_end)))
2798
token_month = Token(re.compile(r"(\d+)M"),
2799
datetime.timedelta(weeks=4),
2800
frozenset((token_day, token_end)))
2801
token_year = Token(re.compile(r"(\d+)Y"),
2802
datetime.timedelta(weeks=52),
2803
frozenset((token_month, token_end)))
2804
token_week = Token(re.compile(r"(\d+)W"),
2805
datetime.timedelta(weeks=1),
2806
frozenset((token_end, )))
2807
token_duration = Token(re.compile(r"P"), None,
2808
frozenset((token_year, token_month,
2809
token_day, token_time,
2810
token_week)))
2811
# Define starting values:
2812
# Value so far
2813
value = datetime.timedelta()
2814
found_token = None
2815
# Following valid tokens
2816
followers = frozenset((token_duration, ))
2817
# String left to parse
2818
s = duration
2819
# Loop until end token is found
2820
while found_token is not token_end:
2821
# Search for any currently valid tokens
2822
for token in followers:
2823
match = token.regexp.match(s)
2824
if match is not None:
2825
# Token found
2826
if token.value is not None:
2827
# Value found, parse digits
2828
factor = int(match.group(1), 10)
2829
# Add to value so far
2830
value += factor * token.value
2831
# Strip token from string
2832
s = token.regexp.sub("", s, 1)
2833
# Go to found token
2834
found_token = token
2835
# Set valid next tokens
2836
followers = found_token.followers
2837
break
2838
else:
2839
# No currently valid tokens were found
2840
raise ValueError("Invalid RFC 3339 duration: {!r}"
2841
.format(duration))
2842
# End token found
2843
return value
2844
2845
2846
1883
def string_to_delta(interval):
2847
1884
"""Parse a string and return a datetime.timedelta
2848
1885
2849
1886
>>> string_to_delta('7d')
2850
1887
datetime.timedelta(7)
2851
1888
>>> string_to_delta('60s')
2859
1896
>>> string_to_delta('5m 30s')
2860
1897
datetime.timedelta(0, 330)
2861
1898
"""
2862
2863
try:
2864
return rfc3339_duration_to_delta(interval)
2865
except ValueError:
2866
pass
2867
2868
1899
timevalue = datetime.timedelta(0)
2869
1900
for s in interval.split():
2870
1901
try:
2871
suffix = s[-1]
1902
suffix = unicode(s[-1])
2872
1903
value = int(s[:-1])
2873
1904
if suffix == "d":
2874
1905
delta = datetime.timedelta(value)
2881
1912
elif suffix == "w":
2882
1913
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2883
1914
else:
2884
raise ValueError("Unknown suffix {!r}".format(suffix))
2885
except IndexError as e:
1915
raise ValueError("Unknown suffix %r" % suffix)
1916
except (ValueError, IndexError) as e:
2886
1917
raise ValueError(*(e.args))
2887
1918
timevalue += delta
2888
1919
return timevalue
2889
1920
2890
1921
2891
def daemon(nochdir=False, noclose=False):
1922
def daemon(nochdir = False, noclose = False):
2892
1923
"""See daemon(3). Standard BSD Unix function.
2893
1924
2894
1925
This should really exist as os.daemon, but it doesn't (yet)."""
2895
1926
if os.fork():
2896
1927
sys.exit()
2901
1932
sys.exit()
2902
1933
if not noclose:
2903
1934
# Close all standard open file descriptors
2904
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1935
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2905
1936
if not stat.S_ISCHR(os.fstat(null).st_mode):
2906
1937
raise OSError(errno.ENODEV,
2907
"{} not a character device"
2908
.format(os.devnull))
1938
"%s not a character device"
1939
% os.path.devnull)
2909
1940
os.dup2(null, sys.stdin.fileno())
2910
1941
os.dup2(null, sys.stdout.fileno())
2911
1942
os.dup2(null, sys.stderr.fileno())
2914
1945
2915
1946
2916
1947
def main():
2917
1948
2918
1949
##################################################################
2919
1950
# Parsing of options, both command line and config file
2920
1951
2921
1952
parser = argparse.ArgumentParser()
2922
1953
parser.add_argument("-v", "--version", action="version",
2923
version="%(prog)s {}".format(version),
1954
version = "%%(prog)s %s" % version,
2924
1955
help="show version number and exit")
2925
1956
parser.add_argument("-i", "--interface", metavar="IF",
2926
1957
help="Bind to interface IF")
2932
1963
help="Run self-test")
2933
1964
parser.add_argument("--debug", action="store_true",
2934
1965
help="Debug mode; run in foreground and log"
2935
" to terminal", default=None)
1966
" to terminal")
2936
1967
parser.add_argument("--debuglevel", metavar="LEVEL",
2937
1968
help="Debug level for stdout output")
2938
1969
parser.add_argument("--priority", help="GnuTLS"
2945
1976
" files")
2946
1977
parser.add_argument("--no-dbus", action="store_false",
2947
1978
dest="use_dbus", help="Do not provide D-Bus"
2948
" system bus interface", default=None)
1979
" system bus interface")
2949
1980
parser.add_argument("--no-ipv6", action="store_false",
2950
dest="use_ipv6", help="Do not use IPv6",
2951
default=None)
1981
dest="use_ipv6", help="Do not use IPv6")
2952
1982
parser.add_argument("--no-restore", action="store_false",
2953
1983
dest="restore", help="Do not restore stored"
2954
" state", default=None)
2955
parser.add_argument("--socket", type=int,
2956
help="Specify a file descriptor to a network"
2957
" socket to use instead of creating one")
1984
" state")
2958
1985
parser.add_argument("--statedir", metavar="DIR",
2959
1986
help="Directory to save/restore state in")
2960
parser.add_argument("--foreground", action="store_true",
2961
help="Run in foreground", default=None)
2962
parser.add_argument("--no-zeroconf", action="store_false",
2963
dest="zeroconf", help="Do not use Zeroconf",
2964
default=None)
2965
1987
2966
1988
options = parser.parse_args()
2967
1989
2968
1990
if options.check:
2969
1991
import doctest
2970
fail_count, test_count = doctest.testmod()
2971
sys.exit(os.EX_OK if fail_count == 0 else 1)
2972
1992
doctest.testmod()
1993
sys.exit()
1994
2973
1995
# Default values for config file for server-global settings
2974
if gnutls.has_rawpk:
2975
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2976
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2977
else:
2978
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2979
":+SIGN-DSA-SHA256")
2980
server_defaults = {"interface": "",
2981
"address": "",
2982
"port": "",
2983
"debug": "False",
2984
"priority": priority,
2985
"servicename": "Mandos",
2986
"use_dbus": "True",
2987
"use_ipv6": "True",
2988
"debuglevel": "",
2989
"restore": "True",
2990
"socket": "",
2991
"statedir": "/var/lib/mandos",
2992
"foreground": "False",
2993
"zeroconf": "True",
2994
}
2995
del priority
2996
1996
server_defaults = { "interface": "",
1997
"address": "",
1998
"port": "",
1999
"debug": "False",
2000
"priority":
2001
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2002
"servicename": "Mandos",
2003
"use_dbus": "True",
2004
"use_ipv6": "True",
2005
"debuglevel": "",
2006
"restore": "True",
2007
"statedir": "/var/lib/mandos"
2008
}
2009
2997
2010
# Parse config file for server-global settings
2998
2011
server_config = configparser.SafeConfigParser(server_defaults)
2999
2012
del server_defaults
3000
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2013
server_config.read(os.path.join(options.configdir,
2014
"mandos.conf"))
3001
2015
# Convert the SafeConfigParser object to a dict
3002
2016
server_settings = server_config.defaults()
3003
2017
# Use the appropriate methods on the non-string config options
3004
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3005
"foreground", "zeroconf"):
2018
for option in ("debug", "use_dbus", "use_ipv6"):
3006
2019
server_settings[option] = server_config.getboolean("DEFAULT",
3007
2020
option)
3008
2021
if server_settings["port"]:
3009
2022
server_settings["port"] = server_config.getint("DEFAULT",
3010
2023
"port")
3011
if server_settings["socket"]:
3012
server_settings["socket"] = server_config.getint("DEFAULT",
3013
"socket")
3014
# Later, stdin will, and stdout and stderr might, be dup'ed
3015
# over with an opened os.devnull. But we don't want this to
3016
# happen with a supplied network socket.
3017
if 0 <= server_settings["socket"] <= 2:
3018
server_settings["socket"] = os.dup(server_settings
3019
["socket"])
3020
2024
del server_config
3021
2025
3022
2026
# Override the settings from the config file with command line
3023
2027
# options, if set.
3024
2028
for option in ("interface", "address", "port", "debug",
3025
"priority", "servicename", "configdir", "use_dbus",
3026
"use_ipv6", "debuglevel", "restore", "statedir",
3027
"socket", "foreground", "zeroconf"):
2029
"priority", "servicename", "configdir",
2030
"use_dbus", "use_ipv6", "debuglevel", "restore",
2031
"statedir"):
3028
2032
value = getattr(options, option)
3029
2033
if value is not None:
3030
2034
server_settings[option] = value
3031
2035
del options
3032
2036
# Force all strings to be unicode
3033
2037
for option in server_settings.keys():
3034
if isinstance(server_settings[option], bytes):
3035
server_settings[option] = (server_settings[option]
3036
.decode("utf-8"))
3037
# Force all boolean options to be boolean
3038
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3039
"foreground", "zeroconf"):
3040
server_settings[option] = bool(server_settings[option])
3041
# Debug implies foreground
3042
if server_settings["debug"]:
3043
server_settings["foreground"] = True
2038
if type(server_settings[option]) is str:
2039
server_settings[option] = unicode(server_settings[option])
3044
2040
# Now we have our good server settings in "server_settings"
3045
2041
3046
2042
##################################################################
3047
3048
if (not server_settings["zeroconf"]
3049
and not (server_settings["port"]
3050
or server_settings["socket"] != "")):
3051
parser.error("Needs port or socket to work without Zeroconf")
3052
2043
3053
2044
# For convenience
3054
2045
debug = server_settings["debug"]
3055
2046
debuglevel = server_settings["debuglevel"]
3057
2048
use_ipv6 = server_settings["use_ipv6"]
3058
2049
stored_state_path = os.path.join(server_settings["statedir"],
3059
2050
stored_state_file)
3060
foreground = server_settings["foreground"]
3061
zeroconf = server_settings["zeroconf"]
3062
2051
3063
2052
if debug:
3064
initlogger(debug, logging.DEBUG)
2053
initlogger(logging.DEBUG)
3065
2054
else:
3066
2055
if not debuglevel:
3067
initlogger(debug)
2056
initlogger()
3068
2057
else:
3069
2058
level = getattr(logging, debuglevel.upper())
3070
initlogger(debug, level)
3071
2059
initlogger(level)
2060
3072
2061
if server_settings["servicename"] != "Mandos":
3073
syslogger.setFormatter(
3074
logging.Formatter('Mandos ({}) [%(process)d]:'
3075
' %(levelname)s: %(message)s'.format(
3076
server_settings["servicename"])))
3077
2062
syslogger.setFormatter(logging.Formatter
2063
('Mandos (%s) [%%(process)d]:'
2064
' %%(levelname)s: %%(message)s'
2065
% server_settings["servicename"]))
2066
3078
2067
# Parse config file with clients
3079
client_config = configparser.SafeConfigParser(Client
3080
.client_defaults)
2068
client_defaults = { "timeout": "5m",
2069
"extended_timeout": "15m",
2070
"interval": "2m",
2071
"checker": "fping -q -- %%(host)s",
2072
"host": "",
2073
"approval_delay": "0s",
2074
"approval_duration": "1s",
2075
}
2076
client_config = configparser.SafeConfigParser(client_defaults)
3081
2077
client_config.read(os.path.join(server_settings["configdir"],
3082
2078
"clients.conf"))
3083
2079
3084
2080
global mandos_dbus_service
3085
2081
mandos_dbus_service = None
3086
3087
socketfd = None
3088
if server_settings["socket"] != "":
3089
socketfd = server_settings["socket"]
3090
tcp_server = MandosServer(
3091
(server_settings["address"], server_settings["port"]),
3092
ClientHandler,
3093
interface=(server_settings["interface"] or None),
3094
use_ipv6=use_ipv6,
3095
gnutls_priority=server_settings["priority"],
3096
use_dbus=use_dbus,
3097
socketfd=socketfd)
3098
if not foreground:
3099
pidfilename = "/run/mandos.pid"
3100
if not os.path.isdir("/run/."):
3101
pidfilename = "/var/run/mandos.pid"
3102
pidfile = None
3103
try:
3104
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3105
except IOError as e:
3106
logger.error("Could not open file %r", pidfilename,
3107
exc_info=e)
3108
3109
for name, group in (("_mandos", "_mandos"),
3110
("mandos", "mandos"),
3111
("nobody", "nogroup")):
3112
try:
3113
uid = pwd.getpwnam(name).pw_uid
3114
gid = pwd.getpwnam(group).pw_gid
3115
break
2082
2083
tcp_server = MandosServer((server_settings["address"],
2084
server_settings["port"]),
2085
ClientHandler,
2086
interface=(server_settings["interface"]
2087
or None),
2088
use_ipv6=use_ipv6,
2089
gnutls_priority=
2090
server_settings["priority"],
2091
use_dbus=use_dbus)
2092
if not debug:
2093
pidfilename = "/var/run/mandos.pid"
2094
try:
2095
pidfile = open(pidfilename, "w")
2096
except IOError:
2097
logger.error("Could not open file %r", pidfilename)
2098
2099
try:
2100
uid = pwd.getpwnam("_mandos").pw_uid
2101
gid = pwd.getpwnam("_mandos").pw_gid
2102
except KeyError:
2103
try:
2104
uid = pwd.getpwnam("mandos").pw_uid
2105
gid = pwd.getpwnam("mandos").pw_gid
3116
2106
except KeyError:
3117
continue
3118
else:
3119
uid = 65534
3120
gid = 65534
2107
try:
2108
uid = pwd.getpwnam("nobody").pw_uid
2109
gid = pwd.getpwnam("nobody").pw_gid
2110
except KeyError:
2111
uid = 65534
2112
gid = 65534
3121
2113
try:
3122
2114
os.setgid(gid)
3123
2115
os.setuid(uid)
3124
if debug:
3125
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3126
gid))
3127
2116
except OSError as error:
3128
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3129
.format(uid, gid, os.strerror(error.errno)))
3130
if error.errno != errno.EPERM:
3131
raise
3132
2117
if error[0] != errno.EPERM:
2118
raise error
2119
3133
2120
if debug:
3134
2121
# Enable all possible GnuTLS debugging
3135
2122
3136
2123
# "Use a log level over 10 to enable all debugging options."
3137
2124
# - GnuTLS manual
3138
gnutls.global_set_log_level(11)
3139
3140
@gnutls.log_func
2125
gnutls.library.functions.gnutls_global_set_log_level(11)
2126
2127
@gnutls.library.types.gnutls_log_func
3141
2128
def debug_gnutls(level, string):
3142
2129
logger.debug("GnuTLS: %s", string[:-1])
3143
3144
gnutls.global_set_log_function(debug_gnutls)
3145
2130
2131
(gnutls.library.functions
2132
.gnutls_global_set_log_function(debug_gnutls))
2133
3146
2134
# Redirect stdin so all checkers get /dev/null
3147
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2135
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3148
2136
os.dup2(null, sys.stdin.fileno())
3149
2137
if null > 2:
3150
2138
os.close(null)
3151
2139
else:
2140
# No console logging
2141
logger.removeHandler(console)
2142
3152
2143
# Need to fork before connecting to D-Bus
3153
if not foreground:
2144
if not debug:
3154
2145
# Close all input and output, do double fork, etc.
3155
2146
daemon()
3156
3157
# multiprocessing will use threads, so before we use GLib we need
3158
# to inform GLib that threads will be used.
3159
GLib.threads_init()
3160
2147
3161
2148
global main_loop
3162
2149
# From the Avahi example code
3163
DBusGMainLoop(set_as_default=True)
3164
main_loop = GLib.MainLoop()
2150
DBusGMainLoop(set_as_default=True )
2151
main_loop = gobject.MainLoop()
3165
2152
bus = dbus.SystemBus()
3166
2153
# End of Avahi example code
3167
2154
if use_dbus:
3168
2155
try:
3169
2156
bus_name = dbus.service.BusName("se.recompile.Mandos",
3170
bus,
3171
do_not_queue=True)
3172
old_bus_name = dbus.service.BusName(
3173
"se.bsnet.fukt.Mandos", bus,
3174
do_not_queue=True)
3175
except dbus.exceptions.DBusException as e:
3176
logger.error("Disabling D-Bus:", exc_info=e)
2157
bus, do_not_queue=True)
2158
old_bus_name = (dbus.service.BusName
2159
("se.bsnet.fukt.Mandos", bus,
2160
do_not_queue=True))
2161
except dbus.exceptions.NameExistsException as e:
2162
logger.error(unicode(e) + ", disabling D-Bus")
3177
2163
use_dbus = False
3178
2164
server_settings["use_dbus"] = False
3179
2165
tcp_server.use_dbus = False
3180
if zeroconf:
3181
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3182
service = AvahiServiceToSyslog(
3183
name=server_settings["servicename"],
3184
servicetype="_mandos._tcp",
3185
protocol=protocol,
3186
bus=bus)
3187
if server_settings["interface"]:
3188
service.interface = if_nametoindex(
3189
server_settings["interface"].encode("utf-8"))
3190
2166
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2167
service = AvahiServiceToSyslog(name =
2168
server_settings["servicename"],
2169
servicetype = "_mandos._tcp",
2170
protocol = protocol, bus = bus)
2171
if server_settings["interface"]:
2172
service.interface = (if_nametoindex
2173
(str(server_settings["interface"])))
2174
3191
2175
global multiprocessing_manager
3192
2176
multiprocessing_manager = multiprocessing.Manager()
3193
2177
3194
2178
client_class = Client
3195
2179
if use_dbus:
3196
client_class = functools.partial(ClientDBus, bus=bus)
3197
3198
client_settings = Client.config_parser(client_config)
2180
client_class = functools.partial(ClientDBusTransitional,
2181
bus = bus)
2182
2183
special_settings = {
2184
# Some settings need to be accessd by special methods;
2185
# booleans need .getboolean(), etc. Here is a list of them:
2186
"approved_by_default":
2187
lambda section:
2188
client_config.getboolean(section, "approved_by_default"),
2189
"enabled":
2190
lambda section:
2191
client_config.getboolean(section, "enabled"),
2192
}
2193
# Construct a new dict of client settings of this form:
2194
# { client_name: {setting_name: value, ...}, ...}
2195
# with exceptions for any special settings as defined above
2196
client_settings = dict((clientname,
2197
dict((setting,
2198
(value
2199
if setting not in special_settings
2200
else special_settings[setting]
2201
(clientname)))
2202
for setting, value in
2203
client_config.items(clientname)))
2204
for clientname in client_config.sections())
2205
3199
2206
old_client_settings = {}
3200
clients_data = {}
3201
3202
# This is used to redirect stdout and stderr for checker processes
3203
global wnull
3204
wnull = open(os.devnull, "w") # A writable /dev/null
3205
# Only used if server is running in foreground but not in debug
3206
# mode
3207
if debug or not foreground:
3208
wnull.close()
3209
2207
clients_data = []
2208
3210
2209
# Get client data and settings from last running state.
3211
2210
if server_settings["restore"]:
3212
2211
try:
3213
2212
with open(stored_state_path, "rb") as stored_state:
3214
if sys.version_info.major == 2:
3215
clients_data, old_client_settings = pickle.load(
3216
stored_state)
3217
else:
3218
bytes_clients_data, bytes_old_client_settings = (
3219
pickle.load(stored_state, encoding="bytes"))
3220
# Fix bytes to strings
3221
# clients_data
3222
# .keys()
3223
clients_data = {(key.decode("utf-8")
3224
if isinstance(key, bytes)
3225
else key): value
3226
for key, value in
3227
bytes_clients_data.items()}
3228
del bytes_clients_data
3229
for key in clients_data:
3230
value = {(k.decode("utf-8")
3231
if isinstance(k, bytes) else k): v
3232
for k, v in
3233
clients_data[key].items()}
3234
clients_data[key] = value
3235
# .client_structure
3236
value["client_structure"] = [
3237
(s.decode("utf-8")
3238
if isinstance(s, bytes)
3239
else s) for s in
3240
value["client_structure"]]
3241
# .name & .host
3242
for k in ("name", "host"):
3243
if isinstance(value[k], bytes):
3244
value[k] = value[k].decode("utf-8")
3245
if not value.has_key("key_id"):
3246
value["key_id"] = ""
3247
elif not value.has_key("fingerprint"):
3248
value["fingerprint"] = ""
3249
# old_client_settings
3250
# .keys()
3251
old_client_settings = {
3252
(key.decode("utf-8")
3253
if isinstance(key, bytes)
3254
else key): value
3255
for key, value in
3256
bytes_old_client_settings.items()}
3257
del bytes_old_client_settings
3258
# .host
3259
for value in old_client_settings.values():
3260
if isinstance(value["host"], bytes):
3261
value["host"] = (value["host"]
3262
.decode("utf-8"))
2213
clients_data, old_client_settings = (pickle.load
2214
(stored_state))
3263
2215
os.remove(stored_state_path)
3264
2216
except IOError as e:
3265
if e.errno == errno.ENOENT:
3266
logger.warning("Could not load persistent state:"
3267
" {}".format(os.strerror(e.errno)))
3268
else:
3269
logger.critical("Could not load persistent state:",
3270
exc_info=e)
2217
logger.warning("Could not load persistent state: {0}"
2218
.format(e))
2219
if e.errno != errno.ENOENT:
3271
2220
raise
3272
except EOFError as e:
3273
logger.warning("Could not load persistent state: "
3274
"EOFError:",
3275
exc_info=e)
3276
2221
3277
2222
with PGPEngine() as pgp:
3278
for client_name, client in clients_data.items():
3279
# Skip removed clients
3280
if client_name not in client_settings:
3281
continue
3282
2223
for client in clients_data:
2224
client_name = client["name"]
2225
3283
2226
# Decide which value to use after restoring saved state.
3284
2227
# We have three different values: Old config file,
3285
2228
# new config file, and saved state.
3290
2233
# For each value in new config, check if it
3291
2234
# differs from the old config value (Except for
3292
2235
# the "secret" attribute)
3293
if (name != "secret"
3294
and (value !=
3295
old_client_settings[client_name][name])):
3296
client[name] = value
2236
if (name != "secret" and
2237
value != old_client_settings[client_name]
2238
[name]):
2239
setattr(client, name, value)
3297
2240
except KeyError:
3298
2241
pass
3299
2242
3300
2243
# Clients who has passed its expire date can still be
3301
# enabled if its last checker was successful. A Client
3302
# whose checker succeeded before we stored its state is
3303
# assumed to have successfully run all checkers during
3304
# downtime.
2244
# enabled if its last checker was sucessful. Clients
2245
# whose checker failed before we stored its state is
2246
# assumed to have failed all checkers during downtime.
3305
2247
if client["enabled"]:
3306
if datetime.datetime.utcnow() >= client["expires"]:
3307
if not client["last_checked_ok"]:
3308
logger.warning(
3309
"disabling client {} - Client never "
3310
"performed a successful checker".format(
3311
client_name))
3312
client["enabled"] = False
3313
elif client["last_checker_status"] != 0:
3314
logger.warning(
3315
"disabling client {} - Client last"
3316
" checker failed with error code"
3317
" {}".format(
3318
client_name,
3319
client["last_checker_status"]))
2248
if client["expires"] <= (datetime.datetime
2249
.utcnow()):
2250
# Client has expired
2251
if client["last_checker_status"] != 0:
3320
2252
client["enabled"] = False
3321
2253
else:
3322
client["expires"] = (
3323
datetime.datetime.utcnow()
3324
+ client["timeout"])
3325
logger.debug("Last checker succeeded,"
3326
" keeping {} enabled".format(
3327
client_name))
2254
client["expires"] = (datetime.datetime
2255
.utcnow()
2256
+ client["timeout"])
2257
2258
client["changedstate"] = (multiprocessing_manager
2259
.Condition
2260
(multiprocessing_manager
2261
.Lock()))
2262
if use_dbus:
2263
new_client = (ClientDBusTransitional.__new__
2264
(ClientDBusTransitional))
2265
tcp_server.clients[client_name] = new_client
2266
new_client.bus = bus
2267
for name, value in client.iteritems():
2268
setattr(new_client, name, value)
2269
client_object_name = unicode(client_name).translate(
2270
{ord("."): ord("_"),
2271
ord("-"): ord("_")})
2272
new_client.dbus_object_path = (dbus.ObjectPath
2273
("/clients/"
2274
+ client_object_name))
2275
DBusObjectWithProperties.__init__(new_client,
2276
new_client.bus,
2277
new_client
2278
.dbus_object_path)
2279
else:
2280
tcp_server.clients[client_name] = (Client.__new__
2281
(Client))
2282
for name, value in client.iteritems():
2283
setattr(tcp_server.clients[client_name],
2284
name, value)
2285
3328
2286
try:
3329
client["secret"] = pgp.decrypt(
3330
client["encrypted_secret"],
3331
client_settings[client_name]["secret"])
2287
tcp_server.clients[client_name].secret = (
2288
pgp.decrypt(tcp_server.clients[client_name]
2289
.encrypted_secret,
2290
client_settings[client_name]
2291
["secret"]))
3332
2292
except PGPError:
3333
2293
# If decryption fails, we use secret from new settings
3334
logger.debug("Failed to decrypt {} old secret".format(
3335
client_name))
3336
client["secret"] = (client_settings[client_name]
3337
["secret"])
3338
3339
# Add/remove clients based on new changes made to config
3340
for client_name in (set(old_client_settings)
3341
- set(client_settings)):
3342
del clients_data[client_name]
3343
for client_name in (set(client_settings)
3344
- set(old_client_settings)):
3345
clients_data[client_name] = client_settings[client_name]
3346
3347
# Create all client objects
3348
for client_name, client in clients_data.items():
3349
tcp_server.clients[client_name] = client_class(
3350
name=client_name,
3351
settings=client,
3352
server_settings=server_settings)
3353
2294
logger.debug("Failed to decrypt {0} old secret"
2295
.format(client_name))
2296
tcp_server.clients[client_name].secret = (
2297
client_settings[client_name]["secret"])
2298
2299
# Create/remove clients based on new changes made to config
2300
for clientname in set(old_client_settings) - set(client_settings):
2301
del tcp_server.clients[clientname]
2302
for clientname in set(client_settings) - set(old_client_settings):
2303
tcp_server.clients[clientname] = (client_class(name
2304
= clientname,
2305
config =
2306
client_settings
2307
[clientname]))
2308
3354
2309
if not tcp_server.clients:
3355
2310
logger.warning("No clients defined")
3356
3357
if not foreground:
3358
if pidfile is not None:
3359
pid = os.getpid()
3360
try:
3361
with pidfile:
3362
print(pid, file=pidfile)
3363
except IOError:
3364
logger.error("Could not write to file %r with PID %d",
3365
pidfilename, pid)
3366
del pidfile
2311
2312
if not debug:
2313
try:
2314
with pidfile:
2315
pid = os.getpid()
2316
pidfile.write(str(pid) + "\n".encode("utf-8"))
2317
del pidfile
2318
except IOError:
2319
logger.error("Could not write to file %r with PID %d",
2320
pidfilename, pid)
2321
except NameError:
2322
# "pidfile" was never created
2323
pass
3367
2324
del pidfilename
3368
3369
for termsig in (signal.SIGHUP, signal.SIGTERM):
3370
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3371
lambda: main_loop.quit() and False)
3372
2325
2326
signal.signal(signal.SIGINT, signal.SIG_IGN)
2327
2328
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2329
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2330
3373
2331
if use_dbus:
3374
3375
@alternate_dbus_interfaces(
3376
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3377
class MandosDBusService(DBusObjectWithObjectManager):
2332
class MandosDBusService(dbus.service.Object):
3378
2333
"""A D-Bus proxy object"""
3379
3380
2334
def __init__(self):
3381
2335
dbus.service.Object.__init__(self, bus, "/")
3382
3383
2336
_interface = "se.recompile.Mandos"
3384
2337
3385
2338
@dbus.service.signal(_interface, signature="o")
3386
2339
def ClientAdded(self, objpath):
3387
2340
"D-Bus signal"
3388
2341
pass
3389
2342
3390
2343
@dbus.service.signal(_interface, signature="ss")
3391
def ClientNotFound(self, key_id, address):
2344
def ClientNotFound(self, fingerprint, address):
3392
2345
"D-Bus signal"
3393
2346
pass
3394
3395
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3396
"true"})
2347
3397
2348
@dbus.service.signal(_interface, signature="os")
3398
2349
def ClientRemoved(self, objpath, name):
3399
2350
"D-Bus signal"
3400
2351
pass
3401
3402
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3403
"true"})
2352
3404
2353
@dbus.service.method(_interface, out_signature="ao")
3405
2354
def GetAllClients(self):
3406
2355
"D-Bus method"
3407
return dbus.Array(c.dbus_object_path for c in
3408
tcp_server.clients.values())
3409
3410
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3411
"true"})
2356
return dbus.Array(c.dbus_object_path
2357
for c in
2358
tcp_server.clients.itervalues())
2359
3412
2360
@dbus.service.method(_interface,
3413
2361
out_signature="a{oa{sv}}")
3414
2362
def GetAllClientsWithProperties(self):
3415
2363
"D-Bus method"
3416
2364
return dbus.Dictionary(
3417
{c.dbus_object_path: c.GetAll(
3418
"se.recompile.Mandos.Client")
3419
for c in tcp_server.clients.values()},
2365
((c.dbus_object_path, c.GetAll(""))
2366
for c in tcp_server.clients.itervalues()),
3420
2367
signature="oa{sv}")
3421
2368
3422
2369
@dbus.service.method(_interface, in_signature="o")
3423
2370
def RemoveClient(self, object_path):
3424
2371
"D-Bus method"
3425
for c in tcp_server.clients.values():
2372
for c in tcp_server.clients.itervalues():
3426
2373
if c.dbus_object_path == object_path:
3427
2374
del tcp_server.clients[c.name]
3428
2375
c.remove_from_connection()
3429
# Don't signal the disabling
2376
# Don't signal anything except ClientRemoved
3430
2377
c.disable(quiet=True)
3431
# Emit D-Bus signal for removal
3432
self.client_removed_signal(c)
2378
# Emit D-Bus signal
2379
self.ClientRemoved(object_path, c.name)
3433
2380
return
3434
2381
raise KeyError(object_path)
3435
2382
3436
2383
del _interface
3437
3438
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3439
out_signature="a{oa{sa{sv}}}")
3440
def GetManagedObjects(self):
3441
"""D-Bus method"""
3442
return dbus.Dictionary(
3443
{client.dbus_object_path:
3444
dbus.Dictionary(
3445
{interface: client.GetAll(interface)
3446
for interface in
3447
client._get_all_interface_names()})
3448
for client in tcp_server.clients.values()})
3449
3450
def client_added_signal(self, client):
3451
"""Send the new standard signal and the old signal"""
3452
if use_dbus:
3453
# New standard signal
3454
self.InterfacesAdded(
3455
client.dbus_object_path,
3456
dbus.Dictionary(
3457
{interface: client.GetAll(interface)
3458
for interface in
3459
client._get_all_interface_names()}))
3460
# Old signal
3461
self.ClientAdded(client.dbus_object_path)
3462
3463
def client_removed_signal(self, client):
3464
"""Send the new standard signal and the old signal"""
3465
if use_dbus:
3466
# New standard signal
3467
self.InterfacesRemoved(
3468
client.dbus_object_path,
3469
client._get_all_interface_names())
3470
# Old signal
3471
self.ClientRemoved(client.dbus_object_path,
3472
client.name)
3473
3474
mandos_dbus_service = MandosDBusService()
3475
3476
# Save modules to variables to exempt the modules from being
3477
# unloaded before the function registered with atexit() is run.
3478
mp = multiprocessing
3479
wn = wnull
3480
2384
2385
class MandosDBusServiceTransitional(MandosDBusService):
2386
__metaclass__ = AlternateDBusNamesMetaclass
2387
mandos_dbus_service = MandosDBusServiceTransitional()
2388
3481
2389
def cleanup():
3482
2390
"Cleanup function; run on exit"
3483
if zeroconf:
3484
service.cleanup()
3485
3486
mp.active_children()
3487
wn.close()
2391
service.cleanup()
2392
2393
multiprocessing.active_children()
3488
2394
if not (tcp_server.clients or client_settings):
3489
2395
return
3490
2396
3491
2397
# Store client before exiting. Secrets are encrypted with key
3492
2398
# based on what config file has. If config file is
3493
2399
# removed/edited, old secret will thus be unrecovable.
3494
clients = {}
2400
clients = []
3495
2401
with PGPEngine() as pgp:
3496
for client in tcp_server.clients.values():
2402
for client in tcp_server.clients.itervalues():
3497
2403
key = client_settings[client.name]["secret"]
3498
2404
client.encrypted_secret = pgp.encrypt(client.secret,
3499
2405
key)
3500
2406
client_dict = {}
3501
3502
# A list of attributes that can not be pickled
3503
# + secret.
3504
exclude = {"bus", "changedstate", "secret",
3505
"checker", "server_settings"}
3506
for name, typ in inspect.getmembers(dbus.service
3507
.Object):
2407
2408
# A list of attributes that will not be stored when
2409
# shutting down.
2410
exclude = set(("bus", "changedstate", "secret"))
2411
for name, typ in (inspect.getmembers
2412
(dbus.service.Object)):
3508
2413
exclude.add(name)
3509
2414
3510
2415
client_dict["encrypted_secret"] = (client
3511
2416
.encrypted_secret)
3512
2417
for attr in client.client_structure:
3513
2418
if attr not in exclude:
3514
2419
client_dict[attr] = getattr(client, attr)
3515
3516
clients[client.name] = client_dict
2420
2421
clients.append(client_dict)
3517
2422
del client_settings[client.name]["secret"]
3518
2423
3519
2424
try:
3520
with tempfile.NamedTemporaryFile(
3521
mode='wb',
3522
suffix=".pickle",
3523
prefix='clients-',
3524
dir=os.path.dirname(stored_state_path),
3525
delete=False) as stored_state:
3526
pickle.dump((clients, client_settings), stored_state,
3527
protocol=2)
3528
tempname = stored_state.name
3529
os.rename(tempname, stored_state_path)
2425
with os.fdopen(os.open(stored_state_path,
2426
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2427
0600), "wb") as stored_state:
2428
pickle.dump((clients, client_settings), stored_state)
3530
2429
except (IOError, OSError) as e:
3531
if not debug:
3532
try:
3533
os.remove(tempname)
3534
except NameError:
3535
pass
3536
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3537
logger.warning("Could not save persistent state: {}"
3538
.format(os.strerror(e.errno)))
3539
else:
3540
logger.warning("Could not save persistent state:",
3541
exc_info=e)
2430
logger.warning("Could not save persistent state: {0}"
2431
.format(e))
2432
if e.errno not in (errno.ENOENT, errno.EACCES):
3542
2433
raise
3543
2434
3544
2435
# Delete all clients, and settings from config
3545
2436
while tcp_server.clients:
3546
2437
name, client = tcp_server.clients.popitem()
3547
2438
if use_dbus:
3548
2439
client.remove_from_connection()
3549
# Don't signal the disabling
2440
# Don't signal anything except ClientRemoved
3550
2441
client.disable(quiet=True)
3551
# Emit D-Bus signal for removal
3552
2442
if use_dbus:
3553
mandos_dbus_service.client_removed_signal(client)
2443
# Emit D-Bus signal
2444
mandos_dbus_service.ClientRemoved(client
2445
.dbus_object_path,
2446
client.name)
3554
2447
client_settings.clear()
3555
2448
3556
2449
atexit.register(cleanup)
3557
3558
for client in tcp_server.clients.values():
2450
2451
for client in tcp_server.clients.itervalues():
3559
2452
if use_dbus:
3560
# Emit D-Bus signal for adding
3561
mandos_dbus_service.client_added_signal(client)
2453
# Emit D-Bus signal
2454
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3562
2455
# Need to initiate checking of clients
3563
2456
if client.enabled:
3564
2457
client.init_checker()
3565
2458
3566
2459
tcp_server.enable()
3567
2460
tcp_server.server_activate()
3568
2461
3569
2462
# Find out what port we got
3570
if zeroconf:
3571
service.port = tcp_server.socket.getsockname()[1]
2463
service.port = tcp_server.socket.getsockname()[1]
3572
2464
if use_ipv6:
3573
2465
logger.info("Now listening on address %r, port %d,"
3574
" flowinfo %d, scope_id %d",
3575
*tcp_server.socket.getsockname())
2466
" flowinfo %d, scope_id %d"
2467
% tcp_server.socket.getsockname())
3576
2468
else: # IPv4
3577
logger.info("Now listening on address %r, port %d",
3578
*tcp_server.socket.getsockname())
3579
3580
# service.interface = tcp_server.socket.getsockname()[3]
3581
2469
logger.info("Now listening on address %r, port %d"
2470
% tcp_server.socket.getsockname())
2471
2472
#service.interface = tcp_server.socket.getsockname()[3]
2473
3582
2474
try:
3583
if zeroconf:
3584
# From the Avahi example code
3585
try:
3586
service.activate()
3587
except dbus.exceptions.DBusException as error:
3588
logger.critical("D-Bus Exception", exc_info=error)
3589
cleanup()
3590
sys.exit(1)
3591
# End of Avahi example code
3592
3593
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3594
lambda *args, **kwargs:
3595
(tcp_server.handle_request
3596
(*args[2:], **kwargs) or True))
3597
2475
# From the Avahi example code
2476
try:
2477
service.activate()
2478
except dbus.exceptions.DBusException as error:
2479
logger.critical("DBusException: %s", error)
2480
cleanup()
2481
sys.exit(1)
2482
# End of Avahi example code
2483
2484
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2485
lambda *args, **kwargs:
2486
(tcp_server.handle_request
2487
(*args[2:], **kwargs) or True))
2488
3598
2489
logger.debug("Starting main loop")
3599
2490
main_loop.run()
3600
2491
except AvahiError as error:
3601
logger.critical("Avahi Error", exc_info=error)
2492
logger.critical("AvahiError: %s", error)
3602
2493
cleanup()
3603
2494
sys.exit(1)
3604
2495
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0