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- Committer: Teddy Hogeborn
- Date: 2019-02-10 10:58:42 UTC
- mfrom: (237.4.106 release)
- Revision ID: teddy@recompile.se-20190210105842-l7htgtxjr23p4heb
Merge from release branch
- files added:
- bugs.xml
- debian/upstream
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
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2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
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# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
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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 © 2008-2011 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
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
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# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
import SocketServer as socketserver
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
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
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
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
64
73
import multiprocessing
65
74
import types
66
75
import binascii
67
76
import tempfile
77
import itertools
78
import collections
79
import codecs
68
80
69
81
import dbus
70
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import dbus.service
71
import gobject
72
import avahi
83
from gi.repository import GLib
73
84
from dbus.mainloop.glib import DBusGMainLoop
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85
import ctypes
75
86
import ctypes.util
76
87
import xml.dom.minidom
77
88
import inspect
78
import GnuPGInterface
79
89
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# Try to find the value of SO_BINDTODEVICE:
80
91
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:
81
94
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
82
95
except AttributeError:
83
96
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
84
99
from IN import SO_BINDTODEVICE
85
100
except ImportError:
86
SO_BINDTODEVICE = None
87
88
version = "1.4.1"
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 = "1.8.2"
89
119
stored_state_file = "clients.pickle"
90
120
91
121
logger = logging.getLogger()
92
syslogger = (logging.handlers.SysLogHandler
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
122
syslogger = None
95
123
96
124
try:
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
100
127
except (OSError, AttributeError):
128
101
129
def if_nametoindex(interface):
102
130
"Get an interface index the hard way, i.e. using fcntl()"
103
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
104
132
with contextlib.closing(socket.socket()) as s:
105
133
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
110
136
return interface_index
111
137
112
138
113
def initlogger(level=logging.WARNING):
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
156
"""init logger and add loglevel"""
115
157
158
global syslogger
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
116
162
syslogger.setFormatter(logging.Formatter
117
163
('Mandos [%(process)d]: %(levelname)s:'
118
164
' %(message)s'))
119
165
logger.addHandler(syslogger)
120
121
console = logging.StreamHandler()
122
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
123
' [%(process)d]:'
124
' %(levelname)s:'
125
' %(message)s'))
126
logger.addHandler(console)
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)
127
174
logger.setLevel(level)
128
175
129
176
134
181
135
182
class PGPEngine(object):
136
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
137
185
def __init__(self):
138
self.gnupg = GnuPGInterface.GnuPG()
139
186
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.gnupg.options.meta_interactive = False
142
self.gnupg.options.homedir = self.tempdir
143
self.gnupg.options.extra_args.extend(['--force-mdc',
144
'--quiet'])
145
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
146
206
def __enter__(self):
147
207
return self
148
149
def __exit__ (self, exc_type, exc_value, traceback):
208
209
def __exit__(self, exc_type, exc_value, traceback):
150
210
self._cleanup()
151
211
return False
152
212
153
213
def __del__(self):
154
214
self._cleanup()
155
215
156
216
def _cleanup(self):
157
217
if self.tempdir is not None:
158
218
# Delete contents of tempdir
159
219
for root, dirs, files in os.walk(self.tempdir,
160
topdown = False):
220
topdown=False):
161
221
for filename in files:
162
222
os.remove(os.path.join(root, filename))
163
223
for dirname in dirs:
165
225
# Remove tempdir
166
226
os.rmdir(self.tempdir)
167
227
self.tempdir = None
168
228
169
229
def password_encode(self, password):
170
230
# Passphrase can not be empty and can not contain newlines or
171
231
# NUL bytes. So we prefix it and hex encode it.
172
return b"mandos" + binascii.hexlify(password)
173
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
174
240
def encrypt(self, data, password):
175
self.gnupg.passphrase = self.password_encode(password)
176
with open(os.devnull) as devnull:
177
try:
178
proc = self.gnupg.run(['--symmetric'],
179
create_fhs=['stdin', 'stdout'],
180
attach_fhs={'stderr': devnull})
181
with contextlib.closing(proc.handles['stdin']) as f:
182
f.write(data)
183
with contextlib.closing(proc.handles['stdout']) as f:
184
ciphertext = f.read()
185
proc.wait()
186
except IOError as e:
187
raise PGPError(e)
188
self.gnupg.passphrase = None
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)
189
256
return ciphertext
190
257
191
258
def decrypt(self, data, password):
192
self.gnupg.passphrase = self.password_encode(password)
193
with open(os.devnull) as devnull:
194
try:
195
proc = self.gnupg.run(['--decrypt'],
196
create_fhs=['stdin', 'stdout'],
197
attach_fhs={'stderr': devnull})
198
with contextlib.closing(proc.handles['stdin'] ) as f:
199
f.write(data)
200
with contextlib.closing(proc.handles['stdout']) as f:
201
decrypted_plaintext = f.read()
202
proc.wait()
203
except IOError as e:
204
raise PGPError(e)
205
self.gnupg.passphrase = None
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)
206
274
return decrypted_plaintext
207
275
208
276
277
# Pretend that we have an Avahi module
278
class Avahi(object):
279
"""This isn't so much a class as it is a module-like namespace.
280
It is instantiated once, and simulates having an Avahi module."""
281
IF_UNSPEC = -1 # avahi-common/address.h
282
PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
285
DBUS_NAME = "org.freedesktop.Avahi"
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
DBUS_PATH_SERVER = "/"
289
290
def string_array_to_txt_array(self, t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
avahi = Avahi()
302
209
303
210
304
class AvahiError(Exception):
211
305
def __init__(self, value, *args, **kwargs):
212
306
self.value = value
213
super(AvahiError, self).__init__(value, *args, **kwargs)
214
def __unicode__(self):
215
return unicode(repr(self.value))
307
return super(AvahiError, self).__init__(value, *args,
308
**kwargs)
309
216
310
217
311
class AvahiServiceError(AvahiError):
218
312
pass
219
313
314
220
315
class AvahiGroupError(AvahiError):
221
316
pass
222
317
223
318
224
319
class AvahiService(object):
225
320
"""An Avahi (Zeroconf) service.
226
321
227
322
Attributes:
228
323
interface: integer; avahi.IF_UNSPEC or an interface index.
229
324
Used to optionally bind to the specified interface.
230
325
name: string; Example: 'Mandos'
231
326
type: string; Example: '_mandos._tcp'.
232
See <http://www.dns-sd.org/ServiceTypes.html>
327
See <https://www.iana.org/assignments/service-names-port-numbers>
233
328
port: integer; what port to announce
234
329
TXT: list of strings; TXT record for the service
235
330
domain: string; Domain to publish on, default to .local if empty.
241
336
server: D-Bus Server
242
337
bus: dbus.SystemBus()
243
338
"""
244
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
245
servicetype = None, port = None, TXT = None,
246
domain = "", host = "", max_renames = 32768,
247
protocol = avahi.PROTO_UNSPEC, bus = None):
339
340
def __init__(self,
341
interface=avahi.IF_UNSPEC,
342
name=None,
343
servicetype=None,
344
port=None,
345
TXT=None,
346
domain="",
347
host="",
348
max_renames=32768,
349
protocol=avahi.PROTO_UNSPEC,
350
bus=None):
248
351
self.interface = interface
249
352
self.name = name
250
353
self.type = servicetype
259
362
self.server = None
260
363
self.bus = bus
261
364
self.entry_group_state_changed_match = None
262
def rename(self):
365
366
def rename(self, remove=True):
263
367
"""Derived from the Avahi example code"""
264
368
if self.rename_count >= self.max_renames:
265
369
logger.critical("No suitable Zeroconf service name found"
266
370
" after %i retries, exiting.",
267
371
self.rename_count)
268
372
raise AvahiServiceError("Too many renames")
269
self.name = unicode(self.server
270
.GetAlternativeServiceName(self.name))
373
self.name = str(
374
self.server.GetAlternativeServiceName(self.name))
375
self.rename_count += 1
271
376
logger.info("Changing Zeroconf service name to %r ...",
272
377
self.name)
273
self.remove()
378
if remove:
379
self.remove()
274
380
try:
275
381
self.add()
276
382
except dbus.exceptions.DBusException as error:
277
logger.critical("DBusException: %s", error)
278
self.cleanup()
279
os._exit(1)
280
self.rename_count += 1
383
if (error.get_dbus_name()
384
== "org.freedesktop.Avahi.CollisionError"):
385
logger.info("Local Zeroconf service name collision.")
386
return self.rename(remove=False)
387
else:
388
logger.critical("D-Bus Exception", exc_info=error)
389
self.cleanup()
390
os._exit(1)
391
281
392
def remove(self):
282
393
"""Derived from the Avahi example code"""
283
394
if self.entry_group_state_changed_match is not None:
285
396
self.entry_group_state_changed_match = None
286
397
if self.group is not None:
287
398
self.group.Reset()
399
288
400
def add(self):
289
401
"""Derived from the Avahi example code"""
290
402
self.remove()
307
419
dbus.UInt16(self.port),
308
420
avahi.string_array_to_txt_array(self.TXT))
309
421
self.group.Commit()
422
310
423
def entry_group_state_changed(self, state, error):
311
424
"""Derived from the Avahi example code"""
312
425
logger.debug("Avahi entry group state change: %i", state)
313
426
314
427
if state == avahi.ENTRY_GROUP_ESTABLISHED:
315
428
logger.debug("Zeroconf service established.")
316
429
elif state == avahi.ENTRY_GROUP_COLLISION:
318
431
self.rename()
319
432
elif state == avahi.ENTRY_GROUP_FAILURE:
320
433
logger.critical("Avahi: Error in group state changed %s",
321
unicode(error))
322
raise AvahiGroupError("State changed: %s"
323
% unicode(error))
434
str(error))
435
raise AvahiGroupError("State changed: {!s}".format(error))
436
324
437
def cleanup(self):
325
438
"""Derived from the Avahi example code"""
326
439
if self.group is not None:
331
444
pass
332
445
self.group = None
333
446
self.remove()
447
334
448
def server_state_changed(self, state, error=None):
335
449
"""Derived from the Avahi example code"""
336
450
logger.debug("Avahi server state change: %i", state)
337
bad_states = { avahi.SERVER_INVALID:
338
"Zeroconf server invalid",
339
avahi.SERVER_REGISTERING: None,
340
avahi.SERVER_COLLISION:
341
"Zeroconf server name collision",
342
avahi.SERVER_FAILURE:
343
"Zeroconf server failure" }
451
bad_states = {
452
avahi.SERVER_INVALID: "Zeroconf server invalid",
453
avahi.SERVER_REGISTERING: None,
454
avahi.SERVER_COLLISION: "Zeroconf server name collision",
455
avahi.SERVER_FAILURE: "Zeroconf server failure",
456
}
344
457
if state in bad_states:
345
458
if bad_states[state] is not None:
346
459
if error is None:
349
462
logger.error(bad_states[state] + ": %r", error)
350
463
self.cleanup()
351
464
elif state == avahi.SERVER_RUNNING:
352
self.add()
465
try:
466
self.add()
467
except dbus.exceptions.DBusException as error:
468
if (error.get_dbus_name()
469
== "org.freedesktop.Avahi.CollisionError"):
470
logger.info("Local Zeroconf service name"
471
" collision.")
472
return self.rename(remove=False)
473
else:
474
logger.critical("D-Bus Exception", exc_info=error)
475
self.cleanup()
476
os._exit(1)
353
477
else:
354
478
if error is None:
355
479
logger.debug("Unknown state: %r", state)
356
480
else:
357
481
logger.debug("Unknown state: %r: %r", state, error)
482
358
483
def activate(self):
359
484
"""Derived from the Avahi example code"""
360
485
if self.server is None:
364
489
follow_name_owner_changes=True),
365
490
avahi.DBUS_INTERFACE_SERVER)
366
491
self.server.connect_to_signal("StateChanged",
367
self.server_state_changed)
492
self.server_state_changed)
368
493
self.server_state_changed(self.server.GetState())
369
494
495
370
496
class AvahiServiceToSyslog(AvahiService):
371
def rename(self):
497
def rename(self, *args, **kwargs):
372
498
"""Add the new name to the syslog messages"""
373
ret = AvahiService.rename(self)
374
syslogger.setFormatter(logging.Formatter
375
('Mandos (%s) [%%(process)d]:'
376
' %%(levelname)s: %%(message)s'
377
% self.name))
499
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
500
syslogger.setFormatter(logging.Formatter(
501
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
502
.format(self.name)))
378
503
return ret
379
504
380
def timedelta_to_milliseconds(td):
381
"Convert a datetime.timedelta() to milliseconds"
382
return ((td.days * 24 * 60 * 60 * 1000)
383
+ (td.seconds * 1000)
384
+ (td.microseconds // 1000))
385
505
506
# Pretend that we have a GnuTLS module
507
class GnuTLS(object):
508
"""This isn't so much a class as it is a module-like namespace.
509
It is instantiated once, and simulates having a GnuTLS module."""
510
511
library = ctypes.util.find_library("gnutls")
512
if library is None:
513
library = ctypes.util.find_library("gnutls-deb0")
514
_library = ctypes.cdll.LoadLibrary(library)
515
del library
516
_need_version = b"3.3.0"
517
_tls_rawpk_version = b"3.6.6"
518
519
def __init__(self):
520
# Need to use "self" here, since this method is called before
521
# the assignment to the "gnutls" global variable happens.
522
if self.check_version(self._need_version) is None:
523
raise self.Error("Needs GnuTLS {} or later"
524
.format(self._need_version))
525
526
# Unless otherwise indicated, the constants and types below are
527
# all from the gnutls/gnutls.h C header file.
528
529
# Constants
530
E_SUCCESS = 0
531
E_INTERRUPTED = -52
532
E_AGAIN = -28
533
CRT_OPENPGP = 2
534
CRT_RAWPK = 3
535
CLIENT = 2
536
SHUT_RDWR = 0
537
CRD_CERTIFICATE = 1
538
E_NO_CERTIFICATE_FOUND = -49
539
X509_FMT_DER = 0
540
NO_TICKETS = 1<<10
541
ENABLE_RAWPK = 1<<18
542
CTYPE_PEERS = 3
543
KEYID_USE_SHA256 = 1 # gnutls/x509.h
544
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
545
546
# Types
547
class session_int(ctypes.Structure):
548
_fields_ = []
549
session_t = ctypes.POINTER(session_int)
550
551
class certificate_credentials_st(ctypes.Structure):
552
_fields_ = []
553
certificate_credentials_t = ctypes.POINTER(
554
certificate_credentials_st)
555
certificate_type_t = ctypes.c_int
556
557
class datum_t(ctypes.Structure):
558
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
559
('size', ctypes.c_uint)]
560
561
class openpgp_crt_int(ctypes.Structure):
562
_fields_ = []
563
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
564
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
565
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
566
credentials_type_t = ctypes.c_int
567
transport_ptr_t = ctypes.c_void_p
568
close_request_t = ctypes.c_int
569
570
# Exceptions
571
class Error(Exception):
572
# We need to use the class name "GnuTLS" here, since this
573
# exception might be raised from within GnuTLS.__init__,
574
# which is called before the assignment to the "gnutls"
575
# global variable has happened.
576
def __init__(self, message=None, code=None, args=()):
577
# Default usage is by a message string, but if a return
578
# code is passed, convert it to a string with
579
# gnutls.strerror()
580
self.code = code
581
if message is None and code is not None:
582
message = GnuTLS.strerror(code)
583
return super(GnuTLS.Error, self).__init__(
584
message, *args)
585
586
class CertificateSecurityError(Error):
587
pass
588
589
# Classes
590
class Credentials(object):
591
def __init__(self):
592
self._c_object = gnutls.certificate_credentials_t()
593
gnutls.certificate_allocate_credentials(
594
ctypes.byref(self._c_object))
595
self.type = gnutls.CRD_CERTIFICATE
596
597
def __del__(self):
598
gnutls.certificate_free_credentials(self._c_object)
599
600
class ClientSession(object):
601
def __init__(self, socket, credentials=None):
602
self._c_object = gnutls.session_t()
603
gnutls_flags = gnutls.CLIENT
604
if gnutls.check_version("3.5.6"):
605
gnutls_flags |= gnutls.NO_TICKETS
606
if gnutls.has_rawpk:
607
gnutls_flags |= gnutls.ENABLE_RAWPK
608
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
609
del gnutls_flags
610
gnutls.set_default_priority(self._c_object)
611
gnutls.transport_set_ptr(self._c_object, socket.fileno())
612
gnutls.handshake_set_private_extensions(self._c_object,
613
True)
614
self.socket = socket
615
if credentials is None:
616
credentials = gnutls.Credentials()
617
gnutls.credentials_set(self._c_object, credentials.type,
618
ctypes.cast(credentials._c_object,
619
ctypes.c_void_p))
620
self.credentials = credentials
621
622
def __del__(self):
623
gnutls.deinit(self._c_object)
624
625
def handshake(self):
626
return gnutls.handshake(self._c_object)
627
628
def send(self, data):
629
data = bytes(data)
630
data_len = len(data)
631
while data_len > 0:
632
data_len -= gnutls.record_send(self._c_object,
633
data[-data_len:],
634
data_len)
635
636
def bye(self):
637
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
638
639
# Error handling functions
640
def _error_code(result):
641
"""A function to raise exceptions on errors, suitable
642
for the 'restype' attribute on ctypes functions"""
643
if result >= 0:
644
return result
645
if result == gnutls.E_NO_CERTIFICATE_FOUND:
646
raise gnutls.CertificateSecurityError(code=result)
647
raise gnutls.Error(code=result)
648
649
def _retry_on_error(result, func, arguments):
650
"""A function to retry on some errors, suitable
651
for the 'errcheck' attribute on ctypes functions"""
652
while result < 0:
653
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
654
return _error_code(result)
655
result = func(*arguments)
656
return result
657
658
# Unless otherwise indicated, the function declarations below are
659
# all from the gnutls/gnutls.h C header file.
660
661
# Functions
662
priority_set_direct = _library.gnutls_priority_set_direct
663
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
664
ctypes.POINTER(ctypes.c_char_p)]
665
priority_set_direct.restype = _error_code
666
667
init = _library.gnutls_init
668
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
669
init.restype = _error_code
670
671
set_default_priority = _library.gnutls_set_default_priority
672
set_default_priority.argtypes = [session_t]
673
set_default_priority.restype = _error_code
674
675
record_send = _library.gnutls_record_send
676
record_send.argtypes = [session_t, ctypes.c_void_p,
677
ctypes.c_size_t]
678
record_send.restype = ctypes.c_ssize_t
679
record_send.errcheck = _retry_on_error
680
681
certificate_allocate_credentials = (
682
_library.gnutls_certificate_allocate_credentials)
683
certificate_allocate_credentials.argtypes = [
684
ctypes.POINTER(certificate_credentials_t)]
685
certificate_allocate_credentials.restype = _error_code
686
687
certificate_free_credentials = (
688
_library.gnutls_certificate_free_credentials)
689
certificate_free_credentials.argtypes = [
690
certificate_credentials_t]
691
certificate_free_credentials.restype = None
692
693
handshake_set_private_extensions = (
694
_library.gnutls_handshake_set_private_extensions)
695
handshake_set_private_extensions.argtypes = [session_t,
696
ctypes.c_int]
697
handshake_set_private_extensions.restype = None
698
699
credentials_set = _library.gnutls_credentials_set
700
credentials_set.argtypes = [session_t, credentials_type_t,
701
ctypes.c_void_p]
702
credentials_set.restype = _error_code
703
704
strerror = _library.gnutls_strerror
705
strerror.argtypes = [ctypes.c_int]
706
strerror.restype = ctypes.c_char_p
707
708
certificate_type_get = _library.gnutls_certificate_type_get
709
certificate_type_get.argtypes = [session_t]
710
certificate_type_get.restype = _error_code
711
712
certificate_get_peers = _library.gnutls_certificate_get_peers
713
certificate_get_peers.argtypes = [session_t,
714
ctypes.POINTER(ctypes.c_uint)]
715
certificate_get_peers.restype = ctypes.POINTER(datum_t)
716
717
global_set_log_level = _library.gnutls_global_set_log_level
718
global_set_log_level.argtypes = [ctypes.c_int]
719
global_set_log_level.restype = None
720
721
global_set_log_function = _library.gnutls_global_set_log_function
722
global_set_log_function.argtypes = [log_func]
723
global_set_log_function.restype = None
724
725
deinit = _library.gnutls_deinit
726
deinit.argtypes = [session_t]
727
deinit.restype = None
728
729
handshake = _library.gnutls_handshake
730
handshake.argtypes = [session_t]
731
handshake.restype = _error_code
732
handshake.errcheck = _retry_on_error
733
734
transport_set_ptr = _library.gnutls_transport_set_ptr
735
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
736
transport_set_ptr.restype = None
737
738
bye = _library.gnutls_bye
739
bye.argtypes = [session_t, close_request_t]
740
bye.restype = _error_code
741
bye.errcheck = _retry_on_error
742
743
check_version = _library.gnutls_check_version
744
check_version.argtypes = [ctypes.c_char_p]
745
check_version.restype = ctypes.c_char_p
746
747
has_rawpk = bool(check_version(_tls_rawpk_version))
748
749
if has_rawpk:
750
# Types
751
class pubkey_st(ctypes.Structure):
752
_fields = []
753
pubkey_t = ctypes.POINTER(pubkey_st)
754
755
x509_crt_fmt_t = ctypes.c_int
756
757
# All the function declarations below are from gnutls/abstract.h
758
pubkey_init = _library.gnutls_pubkey_init
759
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
760
pubkey_init.restype = _error_code
761
762
pubkey_import = _library.gnutls_pubkey_import
763
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
764
x509_crt_fmt_t]
765
pubkey_import.restype = _error_code
766
767
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
768
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
769
ctypes.POINTER(ctypes.c_ubyte),
770
ctypes.POINTER(ctypes.c_size_t)]
771
pubkey_get_key_id.restype = _error_code
772
773
pubkey_deinit = _library.gnutls_pubkey_deinit
774
pubkey_deinit.argtypes = [pubkey_t]
775
pubkey_deinit.restype = None
776
else:
777
# All the function declarations below are from gnutls/openpgp.h
778
779
openpgp_crt_init = _library.gnutls_openpgp_crt_init
780
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
781
openpgp_crt_init.restype = _error_code
782
783
openpgp_crt_import = _library.gnutls_openpgp_crt_import
784
openpgp_crt_import.argtypes = [openpgp_crt_t,
785
ctypes.POINTER(datum_t),
786
openpgp_crt_fmt_t]
787
openpgp_crt_import.restype = _error_code
788
789
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
790
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
791
ctypes.POINTER(ctypes.c_uint)]
792
openpgp_crt_verify_self.restype = _error_code
793
794
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
795
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
796
openpgp_crt_deinit.restype = None
797
798
openpgp_crt_get_fingerprint = (
799
_library.gnutls_openpgp_crt_get_fingerprint)
800
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
801
ctypes.c_void_p,
802
ctypes.POINTER(
803
ctypes.c_size_t)]
804
openpgp_crt_get_fingerprint.restype = _error_code
805
806
if check_version("3.6.4"):
807
certificate_type_get2 = _library.gnutls_certificate_type_get2
808
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
809
certificate_type_get2.restype = _error_code
810
811
# Remove non-public functions
812
del _error_code, _retry_on_error
813
# Create the global "gnutls" object, simulating a module
814
gnutls = GnuTLS()
815
816
817
def call_pipe(connection, # : multiprocessing.Connection
818
func, *args, **kwargs):
819
"""This function is meant to be called by multiprocessing.Process
820
821
This function runs func(*args, **kwargs), and writes the resulting
822
return value on the provided multiprocessing.Connection.
823
"""
824
connection.send(func(*args, **kwargs))
825
connection.close()
826
827
386
828
class Client(object):
387
829
"""A representation of a client host served by this server.
388
830
389
831
Attributes:
390
832
approved: bool(); 'None' if not yet approved/disapproved
391
833
approval_delay: datetime.timedelta(); Time to wait for approval
393
835
checker: subprocess.Popen(); a running checker process used
394
836
to see if the client lives.
395
837
'None' if no process is running.
396
checker_callback_tag: a gobject event source tag, or None
838
checker_callback_tag: a GLib event source tag, or None
397
839
checker_command: string; External command which is run to check
398
840
if client lives. %() expansions are done at
399
841
runtime with vars(self) as dict, so that for
400
842
instance %(name)s can be used in the command.
401
checker_initiator_tag: a gobject event source tag, or None
843
checker_initiator_tag: a GLib event source tag, or None
402
844
created: datetime.datetime(); (UTC) object creation
403
845
client_structure: Object describing what attributes a client has
404
846
and is used for storing the client at exit
405
847
current_checker_command: string; current running checker_command
406
disable_initiator_tag: a gobject event source tag, or None
848
disable_initiator_tag: a GLib event source tag, or None
407
849
enabled: bool()
408
850
fingerprint: string (40 or 32 hexadecimal digits); used to
409
uniquely identify the client
851
uniquely identify an OpenPGP client
852
key_id: string (64 hexadecimal digits); used to uniquely identify
853
a client using raw public keys
410
854
host: string; available for use by the checker command
411
855
interval: datetime.timedelta(); How often to start a new checker
412
856
last_approval_request: datetime.datetime(); (UTC) or None
413
857
last_checked_ok: datetime.datetime(); (UTC) or None
414
415
858
last_checker_status: integer between 0 and 255 reflecting exit
416
859
status of last checker. -1 reflects crashed
417
checker, or None.
860
checker, -2 means no checker completed yet.
861
last_checker_signal: The signal which killed the last checker, if
862
last_checker_status is -1
418
863
last_enabled: datetime.datetime(); (UTC) or None
419
864
name: string; from the config file, used in log messages and
420
865
D-Bus identifiers
421
866
secret: bytestring; sent verbatim (over TLS) to client
422
867
timeout: datetime.timedelta(); How long from last_checked_ok
423
868
until this client is disabled
424
extended_timeout: extra long timeout when password has been sent
869
extended_timeout: extra long timeout when secret has been sent
425
870
runtime_expansions: Allowed attributes for runtime expansion.
426
871
expires: datetime.datetime(); time (UTC) when a client will be
427
872
disabled, or None
873
server_settings: The server_settings dict from main()
428
874
"""
429
875
430
876
runtime_expansions = ("approval_delay", "approval_duration",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
877
"created", "enabled", "expires", "key_id",
878
"fingerprint", "host", "interval",
879
"last_approval_request", "last_checked_ok",
433
880
"last_enabled", "name", "timeout")
434
client_defaults = { "timeout": "5m",
435
"extended_timeout": "15m",
436
"interval": "2m",
437
"checker": "fping -q -- %%(host)s",
438
"host": "",
439
"approval_delay": "0s",
440
"approval_duration": "1s",
441
"approved_by_default": "True",
442
"enabled": "True",
443
}
444
445
def timeout_milliseconds(self):
446
"Return the 'timeout' attribute in milliseconds"
447
return timedelta_to_milliseconds(self.timeout)
448
449
def extended_timeout_milliseconds(self):
450
"Return the 'extended_timeout' attribute in milliseconds"
451
return timedelta_to_milliseconds(self.extended_timeout)
452
453
def interval_milliseconds(self):
454
"Return the 'interval' attribute in milliseconds"
455
return timedelta_to_milliseconds(self.interval)
456
457
def approval_delay_milliseconds(self):
458
return timedelta_to_milliseconds(self.approval_delay)
881
client_defaults = {
882
"timeout": "PT5M",
883
"extended_timeout": "PT15M",
884
"interval": "PT2M",
885
"checker": "fping -q -- %%(host)s",
886
"host": "",
887
"approval_delay": "PT0S",
888
"approval_duration": "PT1S",
889
"approved_by_default": "True",
890
"enabled": "True",
891
}
459
892
460
893
@staticmethod
461
894
def config_parser(config):
462
""" Construct a new dict of client settings of this form:
895
"""Construct a new dict of client settings of this form:
463
896
{ client_name: {setting_name: value, ...}, ...}
464
with exceptions for any special settings as defined above"""
897
with exceptions for any special settings as defined above.
898
NOTE: Must be a pure function. Must return the same result
899
value given the same arguments.
900
"""
465
901
settings = {}
466
902
for client_name in config.sections():
467
903
section = dict(config.items(client_name))
468
904
client = settings[client_name] = {}
469
470
# Default copying each value from config to new dict
471
for setting, value in section.iteritems():
472
client[setting] = value
473
905
906
client["host"] = section["host"]
474
907
# Reformat values from string types to Python types
475
908
client["approved_by_default"] = config.getboolean(
476
909
client_name, "approved_by_default")
477
client["enabled"] = config.getboolean(client_name, "enabled")
478
910
client["enabled"] = config.getboolean(client_name,
911
"enabled")
912
913
# Uppercase and remove spaces from key_id and fingerprint
914
# for later comparison purposes with return value from the
915
# key_id() and fingerprint() functions
916
client["key_id"] = (section.get("key_id", "").upper()
917
.replace(" ", ""))
479
918
client["fingerprint"] = (section["fingerprint"].upper()
480
919
.replace(" ", ""))
481
920
if "secret" in section:
482
client["secret"] = section["secret"].decode("base64")
921
client["secret"] = codecs.decode(section["secret"]
922
.encode("utf-8"),
923
"base64")
483
924
elif "secfile" in section:
484
925
with open(os.path.expanduser(os.path.expandvars
485
926
(section["secfile"])),
486
927
"rb") as secfile:
487
928
client["secret"] = secfile.read()
488
929
else:
489
raise TypeError("No secret or secfile for section %s"
490
% section)
930
raise TypeError("No secret or secfile for section {}"
931
.format(section))
491
932
client["timeout"] = string_to_delta(section["timeout"])
492
933
client["extended_timeout"] = string_to_delta(
493
934
section["extended_timeout"])
496
937
section["approval_delay"])
497
938
client["approval_duration"] = string_to_delta(
498
939
section["approval_duration"])
940
client["checker_command"] = section["checker"]
941
client["last_approval_request"] = None
942
client["last_checked_ok"] = None
943
client["last_checker_status"] = -2
499
944
500
945
return settings
501
502
503
def __init__(self, config, name = None):
504
"""Note: the 'checker' key in 'config' sets the
505
'checker_command' attribute and *not* the 'checker'
506
attribute."""
946
947
def __init__(self, settings, name=None, server_settings=None):
507
948
self.name = name
949
if server_settings is None:
950
server_settings = {}
951
self.server_settings = server_settings
952
# adding all client settings
953
for setting, value in settings.items():
954
setattr(self, setting, value)
955
956
if self.enabled:
957
if not hasattr(self, "last_enabled"):
958
self.last_enabled = datetime.datetime.utcnow()
959
if not hasattr(self, "expires"):
960
self.expires = (datetime.datetime.utcnow()
961
+ self.timeout)
962
else:
963
self.last_enabled = None
964
self.expires = None
965
508
966
logger.debug("Creating client %r", self.name)
509
# Uppercase and remove spaces from fingerprint for later
510
# comparison purposes with return value from the fingerprint()
511
# function
512
self.fingerprint = config["fingerprint"]
967
logger.debug(" Key ID: %s", self.key_id)
513
968
logger.debug(" Fingerprint: %s", self.fingerprint)
514
self.secret = config["secret"]
515
self.host = config["host"]
516
self.created = datetime.datetime.utcnow()
517
self.enabled = config["enabled"]
518
self.last_approval_request = None
519
if self.enabled:
520
self.last_enabled = datetime.datetime.utcnow()
521
else:
522
self.last_enabled = None
523
self.last_checked_ok = None
524
self.last_checker_status = None
525
self.timeout = config["timeout"]
526
self.extended_timeout = config["extended_timeout"]
527
self.interval = config["interval"]
969
self.created = settings.get("created",
970
datetime.datetime.utcnow())
971
972
# attributes specific for this server instance
528
973
self.checker = None
529
974
self.checker_initiator_tag = None
530
975
self.disable_initiator_tag = None
531
if self.enabled:
532
self.expires = datetime.datetime.utcnow() + self.timeout
533
else:
534
self.expires = None
535
976
self.checker_callback_tag = None
536
self.checker_command = config["checker"]
537
977
self.current_checker_command = None
538
978
self.approved = None
539
self.approved_by_default = config["approved_by_default"]
540
979
self.approvals_pending = 0
541
self.approval_delay = config["approval_delay"]
542
self.approval_duration = config["approval_duration"]
543
self.changedstate = (multiprocessing_manager
544
.Condition(multiprocessing_manager
545
.Lock()))
546
self.client_structure = [attr for attr in
547
self.__dict__.iterkeys()
980
self.changedstate = multiprocessing_manager.Condition(
981
multiprocessing_manager.Lock())
982
self.client_structure = [attr
983
for attr in self.__dict__.keys()
548
984
if not attr.startswith("_")]
549
985
self.client_structure.append("client_structure")
550
551
for name, t in inspect.getmembers(type(self),
552
lambda obj:
553
isinstance(obj,
554
property)):
986
987
for name, t in inspect.getmembers(
988
type(self), lambda obj: isinstance(obj, property)):
555
989
if not name.startswith("_"):
556
990
self.client_structure.append(name)
557
991
558
992
# Send notice to process children that client state has changed
559
993
def send_changedstate(self):
560
994
with self.changedstate:
561
995
self.changedstate.notify_all()
562
996
563
997
def enable(self):
564
998
"""Start this client's checker and timeout hooks"""
565
999
if getattr(self, "enabled", False):
566
1000
# Already enabled
567
1001
return
568
self.send_changedstate()
569
1002
self.expires = datetime.datetime.utcnow() + self.timeout
570
1003
self.enabled = True
571
1004
self.last_enabled = datetime.datetime.utcnow()
572
1005
self.init_checker()
573
1006
self.send_changedstate()
1007
574
1008
def disable(self, quiet=True):
575
1009
"""Disable this client."""
576
1010
if not getattr(self, "enabled", False):
577
1011
return False
578
1012
if not quiet:
579
self.send_changedstate()
580
if not quiet:
581
1013
logger.info("Disabling client %s", self.name)
582
if getattr(self, "disable_initiator_tag", False):
583
gobject.source_remove(self.disable_initiator_tag)
1014
if getattr(self, "disable_initiator_tag", None) is not None:
1015
GLib.source_remove(self.disable_initiator_tag)
584
1016
self.disable_initiator_tag = None
585
1017
self.expires = None
586
if getattr(self, "checker_initiator_tag", False):
587
gobject.source_remove(self.checker_initiator_tag)
1018
if getattr(self, "checker_initiator_tag", None) is not None:
1019
GLib.source_remove(self.checker_initiator_tag)
588
1020
self.checker_initiator_tag = None
589
1021
self.stop_checker()
590
1022
self.enabled = False
591
# Do not run this again if called by a gobject.timeout_add
1023
if not quiet:
1024
self.send_changedstate()
1025
# Do not run this again if called by a GLib.timeout_add
592
1026
return False
593
1027
594
1028
def __del__(self):
595
1029
self.disable()
596
1030
597
1031
def init_checker(self):
598
1032
# Schedule a new checker to be started an 'interval' from now,
599
1033
# and every interval from then on.
600
self.checker_initiator_tag = (gobject.timeout_add
601
(self.interval_milliseconds(),
602
self.start_checker))
1034
if self.checker_initiator_tag is not None:
1035
GLib.source_remove(self.checker_initiator_tag)
1036
self.checker_initiator_tag = GLib.timeout_add(
1037
int(self.interval.total_seconds() * 1000),
1038
self.start_checker)
603
1039
# Schedule a disable() when 'timeout' has passed
604
self.disable_initiator_tag = (gobject.timeout_add
605
(self.timeout_milliseconds(),
606
self.disable))
1040
if self.disable_initiator_tag is not None:
1041
GLib.source_remove(self.disable_initiator_tag)
1042
self.disable_initiator_tag = GLib.timeout_add(
1043
int(self.timeout.total_seconds() * 1000), self.disable)
607
1044
# Also start a new checker *right now*.
608
1045
self.start_checker()
609
610
def checker_callback(self, pid, condition, command):
1046
1047
def checker_callback(self, source, condition, connection,
1048
command):
611
1049
"""The checker has completed, so take appropriate actions."""
612
1050
self.checker_callback_tag = None
613
1051
self.checker = None
614
if os.WIFEXITED(condition):
615
self.last_checker_status = os.WEXITSTATUS(condition)
1052
# Read return code from connection (see call_pipe)
1053
returncode = connection.recv()
1054
connection.close()
1055
1056
if returncode >= 0:
1057
self.last_checker_status = returncode
1058
self.last_checker_signal = None
616
1059
if self.last_checker_status == 0:
617
1060
logger.info("Checker for %(name)s succeeded",
618
1061
vars(self))
619
1062
self.checked_ok()
620
1063
else:
621
logger.info("Checker for %(name)s failed",
622
vars(self))
1064
logger.info("Checker for %(name)s failed", vars(self))
623
1065
else:
624
1066
self.last_checker_status = -1
1067
self.last_checker_signal = -returncode
625
1068
logger.warning("Checker for %(name)s crashed?",
626
1069
vars(self))
627
628
def checked_ok(self, timeout=None):
629
"""Bump up the timeout for this client.
630
631
This should only be called when the client has been seen,
632
alive and well.
633
"""
1070
return False
1071
1072
def checked_ok(self):
1073
"""Assert that the client has been seen, alive and well."""
1074
self.last_checked_ok = datetime.datetime.utcnow()
1075
self.last_checker_status = 0
1076
self.last_checker_signal = None
1077
self.bump_timeout()
1078
1079
def bump_timeout(self, timeout=None):
1080
"""Bump up the timeout for this client."""
634
1081
if timeout is None:
635
1082
timeout = self.timeout
636
self.last_checked_ok = datetime.datetime.utcnow()
637
1083
if self.disable_initiator_tag is not None:
638
gobject.source_remove(self.disable_initiator_tag)
1084
GLib.source_remove(self.disable_initiator_tag)
1085
self.disable_initiator_tag = None
639
1086
if getattr(self, "enabled", False):
640
self.disable_initiator_tag = (gobject.timeout_add
641
(timedelta_to_milliseconds
642
(timeout), self.disable))
1087
self.disable_initiator_tag = GLib.timeout_add(
1088
int(timeout.total_seconds() * 1000), self.disable)
643
1089
self.expires = datetime.datetime.utcnow() + timeout
644
1090
645
1091
def need_approval(self):
646
1092
self.last_approval_request = datetime.datetime.utcnow()
647
1093
648
1094
def start_checker(self):
649
1095
"""Start a new checker subprocess if one is not running.
650
1096
651
1097
If a checker already exists, leave it running and do
652
1098
nothing."""
653
1099
# The reason for not killing a running checker is that if we
654
# did that, then if a checker (for some reason) started
655
# running slowly and taking more than 'interval' time, the
656
# client would inevitably timeout, since no checker would get
657
# a chance to run to completion. If we instead leave running
1100
# did that, and if a checker (for some reason) started running
1101
# slowly and taking more than 'interval' time, then the client
1102
# would inevitably timeout, since no checker would get a
1103
# chance to run to completion. If we instead leave running
658
1104
# checkers alone, the checker would have to take more time
659
1105
# than 'timeout' for the client to be disabled, which is as it
660
1106
# should be.
661
662
# If a checker exists, make sure it is not a zombie
663
try:
664
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
665
except (AttributeError, OSError) as error:
666
if (isinstance(error, OSError)
667
and error.errno != errno.ECHILD):
668
raise error
669
else:
670
if pid:
671
logger.warning("Checker was a zombie")
672
gobject.source_remove(self.checker_callback_tag)
673
self.checker_callback(pid, status,
674
self.current_checker_command)
1107
1108
if self.checker is not None and not self.checker.is_alive():
1109
logger.warning("Checker was not alive; joining")
1110
self.checker.join()
1111
self.checker = None
675
1112
# Start a new checker if needed
676
1113
if self.checker is None:
1114
# Escape attributes for the shell
1115
escaped_attrs = {
1116
attr: re.escape(str(getattr(self, attr)))
1117
for attr in self.runtime_expansions}
677
1118
try:
678
# In case checker_command has exactly one % operator
679
command = self.checker_command % self.host
680
except TypeError:
681
# Escape attributes for the shell
682
escaped_attrs = dict(
683
(attr,
684
re.escape(unicode(str(getattr(self, attr, "")),
685
errors=
686
'replace')))
687
for attr in
688
self.runtime_expansions)
689
690
try:
691
command = self.checker_command % escaped_attrs
692
except TypeError as error:
693
logger.error('Could not format string "%s":'
694
' %s', self.checker_command, error)
695
return True # Try again later
1119
command = self.checker_command % escaped_attrs
1120
except TypeError as error:
1121
logger.error('Could not format string "%s"',
1122
self.checker_command,
1123
exc_info=error)
1124
return True # Try again later
696
1125
self.current_checker_command = command
697
try:
698
logger.info("Starting checker %r for %s",
699
command, self.name)
700
# We don't need to redirect stdout and stderr, since
701
# in normal mode, that is already done by daemon(),
702
# and in debug mode we don't want to. (Stdin is
703
# always replaced by /dev/null.)
704
self.checker = subprocess.Popen(command,
705
close_fds=True,
706
shell=True, cwd="/")
707
self.checker_callback_tag = (gobject.child_watch_add
708
(self.checker.pid,
709
self.checker_callback,
710
data=command))
711
# The checker may have completed before the gobject
712
# watch was added. Check for this.
713
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
714
if pid:
715
gobject.source_remove(self.checker_callback_tag)
716
self.checker_callback(pid, status, command)
717
except OSError as error:
718
logger.error("Failed to start subprocess: %s",
719
error)
720
# Re-run this periodically if run by gobject.timeout_add
1126
logger.info("Starting checker %r for %s", command,
1127
self.name)
1128
# We don't need to redirect stdout and stderr, since
1129
# in normal mode, that is already done by daemon(),
1130
# and in debug mode we don't want to. (Stdin is
1131
# always replaced by /dev/null.)
1132
# The exception is when not debugging but nevertheless
1133
# running in the foreground; use the previously
1134
# created wnull.
1135
popen_args = {"close_fds": True,
1136
"shell": True,
1137
"cwd": "/"}
1138
if (not self.server_settings["debug"]
1139
and self.server_settings["foreground"]):
1140
popen_args.update({"stdout": wnull,
1141
"stderr": wnull})
1142
pipe = multiprocessing.Pipe(duplex=False)
1143
self.checker = multiprocessing.Process(
1144
target=call_pipe,
1145
args=(pipe[1], subprocess.call, command),
1146
kwargs=popen_args)
1147
self.checker.start()
1148
self.checker_callback_tag = GLib.io_add_watch(
1149
pipe[0].fileno(), GLib.IO_IN,
1150
self.checker_callback, pipe[0], command)
1151
# Re-run this periodically if run by GLib.timeout_add
721
1152
return True
722
1153
723
1154
def stop_checker(self):
724
1155
"""Force the checker process, if any, to stop."""
725
1156
if self.checker_callback_tag:
726
gobject.source_remove(self.checker_callback_tag)
1157
GLib.source_remove(self.checker_callback_tag)
727
1158
self.checker_callback_tag = None
728
1159
if getattr(self, "checker", None) is None:
729
1160
return
730
1161
logger.debug("Stopping checker for %(name)s", vars(self))
731
try:
732
os.kill(self.checker.pid, signal.SIGTERM)
733
#time.sleep(0.5)
734
#if self.checker.poll() is None:
735
# os.kill(self.checker.pid, signal.SIGKILL)
736
except OSError as error:
737
if error.errno != errno.ESRCH: # No such process
738
raise
1162
self.checker.terminate()
739
1163
self.checker = None
740
1164
741
1165
742
def dbus_service_property(dbus_interface, signature="v",
743
access="readwrite", byte_arrays=False):
1166
def dbus_service_property(dbus_interface,
1167
signature="v",
1168
access="readwrite",
1169
byte_arrays=False):
744
1170
"""Decorators for marking methods of a DBusObjectWithProperties to
745
1171
become properties on the D-Bus.
746
1172
747
1173
The decorated method will be called with no arguments by "Get"
748
1174
and with one argument by "Set".
749
1175
750
1176
The parameters, where they are supported, are the same as
751
1177
dbus.service.method, except there is only "signature", since the
752
1178
type from Get() and the type sent to Set() is the same.
755
1181
# "Set" method, so we fail early here:
756
1182
if byte_arrays and signature != "ay":
757
1183
raise ValueError("Byte arrays not supported for non-'ay'"
758
" signature %r" % signature)
1184
" signature {!r}".format(signature))
1185
759
1186
def decorator(func):
760
1187
func._dbus_is_property = True
761
1188
func._dbus_interface = dbus_interface
764
1191
func._dbus_name = func.__name__
765
1192
if func._dbus_name.endswith("_dbus_property"):
766
1193
func._dbus_name = func._dbus_name[:-14]
767
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
768
return func
1194
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1195
return func
1196
1197
return decorator
1198
1199
1200
def dbus_interface_annotations(dbus_interface):
1201
"""Decorator for marking functions returning interface annotations
1202
1203
Usage:
1204
1205
@dbus_interface_annotations("org.example.Interface")
1206
def _foo(self): # Function name does not matter
1207
return {"org.freedesktop.DBus.Deprecated": "true",
1208
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1209
"false"}
1210
"""
1211
1212
def decorator(func):
1213
func._dbus_is_interface = True
1214
func._dbus_interface = dbus_interface
1215
func._dbus_name = dbus_interface
1216
return func
1217
1218
return decorator
1219
1220
1221
def dbus_annotations(annotations):
1222
"""Decorator to annotate D-Bus methods, signals or properties
1223
Usage:
1224
1225
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1226
"org.freedesktop.DBus.Property."
1227
"EmitsChangedSignal": "false"})
1228
@dbus_service_property("org.example.Interface", signature="b",
1229
access="r")
1230
def Property_dbus_property(self):
1231
return dbus.Boolean(False)
1232
1233
See also the DBusObjectWithAnnotations class.
1234
"""
1235
1236
def decorator(func):
1237
func._dbus_annotations = annotations
1238
return func
1239
769
1240
return decorator
770
1241
771
1242
772
1243
class DBusPropertyException(dbus.exceptions.DBusException):
773
1244
"""A base class for D-Bus property-related exceptions
774
1245
"""
775
def __unicode__(self):
776
return unicode(str(self))
1246
pass
777
1247
778
1248
779
1249
class DBusPropertyAccessException(DBusPropertyException):
788
1258
pass
789
1259
790
1260
791
class DBusObjectWithProperties(dbus.service.Object):
1261
class DBusObjectWithAnnotations(dbus.service.Object):
1262
"""A D-Bus object with annotations.
1263
1264
Classes inheriting from this can use the dbus_annotations
1265
decorator to add annotations to methods or signals.
1266
"""
1267
1268
@staticmethod
1269
def _is_dbus_thing(thing):
1270
"""Returns a function testing if an attribute is a D-Bus thing
1271
1272
If called like _is_dbus_thing("method") it returns a function
1273
suitable for use as predicate to inspect.getmembers().
1274
"""
1275
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1276
False)
1277
1278
def _get_all_dbus_things(self, thing):
1279
"""Returns a generator of (name, attribute) pairs
1280
"""
1281
return ((getattr(athing.__get__(self), "_dbus_name", name),
1282
athing.__get__(self))
1283
for cls in self.__class__.__mro__
1284
for name, athing in
1285
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1286
1287
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1288
out_signature="s",
1289
path_keyword='object_path',
1290
connection_keyword='connection')
1291
def Introspect(self, object_path, connection):
1292
"""Overloading of standard D-Bus method.
1293
1294
Inserts annotation tags on methods and signals.
1295
"""
1296
xmlstring = dbus.service.Object.Introspect(self, object_path,
1297
connection)
1298
try:
1299
document = xml.dom.minidom.parseString(xmlstring)
1300
1301
for if_tag in document.getElementsByTagName("interface"):
1302
# Add annotation tags
1303
for typ in ("method", "signal"):
1304
for tag in if_tag.getElementsByTagName(typ):
1305
annots = dict()
1306
for name, prop in (self.
1307
_get_all_dbus_things(typ)):
1308
if (name == tag.getAttribute("name")
1309
and prop._dbus_interface
1310
== if_tag.getAttribute("name")):
1311
annots.update(getattr(
1312
prop, "_dbus_annotations", {}))
1313
for name, value in annots.items():
1314
ann_tag = document.createElement(
1315
"annotation")
1316
ann_tag.setAttribute("name", name)
1317
ann_tag.setAttribute("value", value)
1318
tag.appendChild(ann_tag)
1319
# Add interface annotation tags
1320
for annotation, value in dict(
1321
itertools.chain.from_iterable(
1322
annotations().items()
1323
for name, annotations
1324
in self._get_all_dbus_things("interface")
1325
if name == if_tag.getAttribute("name")
1326
)).items():
1327
ann_tag = document.createElement("annotation")
1328
ann_tag.setAttribute("name", annotation)
1329
ann_tag.setAttribute("value", value)
1330
if_tag.appendChild(ann_tag)
1331
# Fix argument name for the Introspect method itself
1332
if (if_tag.getAttribute("name")
1333
== dbus.INTROSPECTABLE_IFACE):
1334
for cn in if_tag.getElementsByTagName("method"):
1335
if cn.getAttribute("name") == "Introspect":
1336
for arg in cn.getElementsByTagName("arg"):
1337
if (arg.getAttribute("direction")
1338
== "out"):
1339
arg.setAttribute("name",
1340
"xml_data")
1341
xmlstring = document.toxml("utf-8")
1342
document.unlink()
1343
except (AttributeError, xml.dom.DOMException,
1344
xml.parsers.expat.ExpatError) as error:
1345
logger.error("Failed to override Introspection method",
1346
exc_info=error)
1347
return xmlstring
1348
1349
1350
class DBusObjectWithProperties(DBusObjectWithAnnotations):
792
1351
"""A D-Bus object with properties.
793
1352
794
1353
Classes inheriting from this can use the dbus_service_property
795
1354
decorator to expose methods as D-Bus properties. It exposes the
796
1355
standard Get(), Set(), and GetAll() methods on the D-Bus.
797
1356
"""
798
799
@staticmethod
800
def _is_dbus_property(obj):
801
return getattr(obj, "_dbus_is_property", False)
802
803
def _get_all_dbus_properties(self):
804
"""Returns a generator of (name, attribute) pairs
805
"""
806
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
807
for cls in self.__class__.__mro__
808
for name, prop in
809
inspect.getmembers(cls, self._is_dbus_property))
810
1357
811
1358
def _get_dbus_property(self, interface_name, property_name):
812
1359
"""Returns a bound method if one exists which is a D-Bus
813
1360
property with the specified name and interface.
814
1361
"""
815
for cls in self.__class__.__mro__:
816
for name, value in (inspect.getmembers
817
(cls, self._is_dbus_property)):
1362
for cls in self.__class__.__mro__:
1363
for name, value in inspect.getmembers(
1364
cls, self._is_dbus_thing("property")):
818
1365
if (value._dbus_name == property_name
819
1366
and value._dbus_interface == interface_name):
820
1367
return value.__get__(self)
821
1368
822
1369
# No such property
823
raise DBusPropertyNotFound(self.dbus_object_path + ":"
824
+ interface_name + "."
825
+ property_name)
826
827
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1370
raise DBusPropertyNotFound("{}:{}.{}".format(
1371
self.dbus_object_path, interface_name, property_name))
1372
1373
@classmethod
1374
def _get_all_interface_names(cls):
1375
"""Get a sequence of all interfaces supported by an object"""
1376
return (name for name in set(getattr(getattr(x, attr),
1377
"_dbus_interface", None)
1378
for x in (inspect.getmro(cls))
1379
for attr in dir(x))
1380
if name is not None)
1381
1382
@dbus.service.method(dbus.PROPERTIES_IFACE,
1383
in_signature="ss",
828
1384
out_signature="v")
829
1385
def Get(self, interface_name, property_name):
830
1386
"""Standard D-Bus property Get() method, see D-Bus standard.
836
1392
if not hasattr(value, "variant_level"):
837
1393
return value
838
1394
return type(value)(value, variant_level=value.variant_level+1)
839
1395
840
1396
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
841
1397
def Set(self, interface_name, property_name, value):
842
1398
"""Standard D-Bus property Set() method, see D-Bus standard.
848
1404
# The byte_arrays option is not supported yet on
849
1405
# signatures other than "ay".
850
1406
if prop._dbus_signature != "ay":
851
raise ValueError
852
value = dbus.ByteArray(''.join(unichr(byte)
853
for byte in value))
1407
raise ValueError("Byte arrays not supported for non-"
1408
"'ay' signature {!r}"
1409
.format(prop._dbus_signature))
1410
value = dbus.ByteArray(b''.join(chr(byte)
1411
for byte in value))
854
1412
prop(value)
855
856
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1413
1414
@dbus.service.method(dbus.PROPERTIES_IFACE,
1415
in_signature="s",
857
1416
out_signature="a{sv}")
858
1417
def GetAll(self, interface_name):
859
1418
"""Standard D-Bus property GetAll() method, see D-Bus
860
1419
standard.
861
1420
862
1421
Note: Will not include properties with access="write".
863
1422
"""
864
1423
properties = {}
865
for name, prop in self._get_all_dbus_properties():
1424
for name, prop in self._get_all_dbus_things("property"):
866
1425
if (interface_name
867
1426
and interface_name != prop._dbus_interface):
868
1427
# Interface non-empty but did not match
874
1433
if not hasattr(value, "variant_level"):
875
1434
properties[name] = value
876
1435
continue
877
properties[name] = type(value)(value, variant_level=
878
value.variant_level+1)
1436
properties[name] = type(value)(
1437
value, variant_level=value.variant_level + 1)
879
1438
return dbus.Dictionary(properties, signature="sv")
880
1439
1440
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1441
def PropertiesChanged(self, interface_name, changed_properties,
1442
invalidated_properties):
1443
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1444
standard.
1445
"""
1446
pass
1447
881
1448
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
882
1449
out_signature="s",
883
1450
path_keyword='object_path',
884
1451
connection_keyword='connection')
885
1452
def Introspect(self, object_path, connection):
886
"""Standard D-Bus method, overloaded to insert property tags.
1453
"""Overloading of standard D-Bus method.
1454
1455
Inserts property tags and interface annotation tags.
887
1456
"""
888
xmlstring = dbus.service.Object.Introspect(self, object_path,
889
connection)
1457
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1458
object_path,
1459
connection)
890
1460
try:
891
1461
document = xml.dom.minidom.parseString(xmlstring)
1462
892
1463
def make_tag(document, name, prop):
893
1464
e = document.createElement("property")
894
1465
e.setAttribute("name", name)
895
1466
e.setAttribute("type", prop._dbus_signature)
896
1467
e.setAttribute("access", prop._dbus_access)
897
1468
return e
1469
898
1470
for if_tag in document.getElementsByTagName("interface"):
1471
# Add property tags
899
1472
for tag in (make_tag(document, name, prop)
900
1473
for name, prop
901
in self._get_all_dbus_properties()
1474
in self._get_all_dbus_things("property")
902
1475
if prop._dbus_interface
903
1476
== if_tag.getAttribute("name")):
904
1477
if_tag.appendChild(tag)
1478
# Add annotation tags for properties
1479
for tag in if_tag.getElementsByTagName("property"):
1480
annots = dict()
1481
for name, prop in self._get_all_dbus_things(
1482
"property"):
1483
if (name == tag.getAttribute("name")
1484
and prop._dbus_interface
1485
== if_tag.getAttribute("name")):
1486
annots.update(getattr(
1487
prop, "_dbus_annotations", {}))
1488
for name, value in annots.items():
1489
ann_tag = document.createElement(
1490
"annotation")
1491
ann_tag.setAttribute("name", name)
1492
ann_tag.setAttribute("value", value)
1493
tag.appendChild(ann_tag)
905
1494
# Add the names to the return values for the
906
1495
# "org.freedesktop.DBus.Properties" methods
907
1496
if (if_tag.getAttribute("name")
922
1511
except (AttributeError, xml.dom.DOMException,
923
1512
xml.parsers.expat.ExpatError) as error:
924
1513
logger.error("Failed to override Introspection method",
925
error)
926
return xmlstring
927
928
929
def datetime_to_dbus (dt, variant_level=0):
1514
exc_info=error)
1515
return xmlstring
1516
1517
1518
try:
1519
dbus.OBJECT_MANAGER_IFACE
1520
except AttributeError:
1521
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1522
1523
1524
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1525
"""A D-Bus object with an ObjectManager.
1526
1527
Classes inheriting from this exposes the standard
1528
GetManagedObjects call and the InterfacesAdded and
1529
InterfacesRemoved signals on the standard
1530
"org.freedesktop.DBus.ObjectManager" interface.
1531
1532
Note: No signals are sent automatically; they must be sent
1533
manually.
1534
"""
1535
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1536
out_signature="a{oa{sa{sv}}}")
1537
def GetManagedObjects(self):
1538
"""This function must be overridden"""
1539
raise NotImplementedError()
1540
1541
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1542
signature="oa{sa{sv}}")
1543
def InterfacesAdded(self, object_path, interfaces_and_properties):
1544
pass
1545
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1547
def InterfacesRemoved(self, object_path, interfaces):
1548
pass
1549
1550
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1551
out_signature="s",
1552
path_keyword='object_path',
1553
connection_keyword='connection')
1554
def Introspect(self, object_path, connection):
1555
"""Overloading of standard D-Bus method.
1556
1557
Override return argument name of GetManagedObjects to be
1558
"objpath_interfaces_and_properties"
1559
"""
1560
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1561
object_path,
1562
connection)
1563
try:
1564
document = xml.dom.minidom.parseString(xmlstring)
1565
1566
for if_tag in document.getElementsByTagName("interface"):
1567
# Fix argument name for the GetManagedObjects method
1568
if (if_tag.getAttribute("name")
1569
== dbus.OBJECT_MANAGER_IFACE):
1570
for cn in if_tag.getElementsByTagName("method"):
1571
if (cn.getAttribute("name")
1572
== "GetManagedObjects"):
1573
for arg in cn.getElementsByTagName("arg"):
1574
if (arg.getAttribute("direction")
1575
== "out"):
1576
arg.setAttribute(
1577
"name",
1578
"objpath_interfaces"
1579
"_and_properties")
1580
xmlstring = document.toxml("utf-8")
1581
document.unlink()
1582
except (AttributeError, xml.dom.DOMException,
1583
xml.parsers.expat.ExpatError) as error:
1584
logger.error("Failed to override Introspection method",
1585
exc_info=error)
1586
return xmlstring
1587
1588
1589
def datetime_to_dbus(dt, variant_level=0):
930
1590
"""Convert a UTC datetime.datetime() to a D-Bus type."""
931
1591
if dt is None:
932
return dbus.String("", variant_level = variant_level)
933
return dbus.String(dt.isoformat(),
934
variant_level=variant_level)
935
936
937
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
938
.__metaclass__):
939
"""Applied to an empty subclass of a D-Bus object, this metaclass
940
will add additional D-Bus attributes matching a certain pattern.
1592
return dbus.String("", variant_level=variant_level)
1593
return dbus.String(dt.isoformat(), variant_level=variant_level)
1594
1595
1596
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1597
"""A class decorator; applied to a subclass of
1598
dbus.service.Object, it will add alternate D-Bus attributes with
1599
interface names according to the "alt_interface_names" mapping.
1600
Usage:
1601
1602
@alternate_dbus_interfaces({"org.example.Interface":
1603
"net.example.AlternateInterface"})
1604
class SampleDBusObject(dbus.service.Object):
1605
@dbus.service.method("org.example.Interface")
1606
def SampleDBusMethod():
1607
pass
1608
1609
The above "SampleDBusMethod" on "SampleDBusObject" will be
1610
reachable via two interfaces: "org.example.Interface" and
1611
"net.example.AlternateInterface", the latter of which will have
1612
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1613
"true", unless "deprecate" is passed with a False value.
1614
1615
This works for methods and signals, and also for D-Bus properties
1616
(from DBusObjectWithProperties) and interfaces (from the
1617
dbus_interface_annotations decorator).
941
1618
"""
942
def __new__(mcs, name, bases, attr):
943
# Go through all the base classes which could have D-Bus
944
# methods, signals, or properties in them
945
for base in (b for b in bases
946
if issubclass(b, dbus.service.Object)):
947
# Go though all attributes of the base class
948
for attrname, attribute in inspect.getmembers(base):
1619
1620
def wrapper(cls):
1621
for orig_interface_name, alt_interface_name in (
1622
alt_interface_names.items()):
1623
attr = {}
1624
interface_names = set()
1625
# Go though all attributes of the class
1626
for attrname, attribute in inspect.getmembers(cls):
949
1627
# Ignore non-D-Bus attributes, and D-Bus attributes
950
1628
# with the wrong interface name
951
1629
if (not hasattr(attribute, "_dbus_interface")
952
or not attribute._dbus_interface
953
.startswith("se.recompile.Mandos")):
1630
or not attribute._dbus_interface.startswith(
1631
orig_interface_name)):
954
1632
continue
955
1633
# Create an alternate D-Bus interface name based on
956
1634
# the current name
957
alt_interface = (attribute._dbus_interface
958
.replace("se.recompile.Mandos",
959
"se.bsnet.fukt.Mandos"))
1635
alt_interface = attribute._dbus_interface.replace(
1636
orig_interface_name, alt_interface_name)
1637
interface_names.add(alt_interface)
960
1638
# Is this a D-Bus signal?
961
1639
if getattr(attribute, "_dbus_is_signal", False):
962
# Extract the original non-method function by
963
# black magic
964
nonmethod_func = (dict(
1640
# Extract the original non-method undecorated
1641
# function by black magic
1642
if sys.version_info.major == 2:
1643
nonmethod_func = (dict(
965
1644
zip(attribute.func_code.co_freevars,
966
attribute.__closure__))["func"]
967
.cell_contents)
1645
attribute.__closure__))
1646
["func"].cell_contents)
1647
else:
1648
nonmethod_func = (dict(
1649
zip(attribute.__code__.co_freevars,
1650
attribute.__closure__))
1651
["func"].cell_contents)
968
1652
# Create a new, but exactly alike, function
969
1653
# object, and decorate it to be a new D-Bus signal
970
1654
# with the alternate D-Bus interface name
971
new_function = (dbus.service.signal
972
(alt_interface,
973
attribute._dbus_signature)
974
(types.FunctionType(
975
nonmethod_func.func_code,
976
nonmethod_func.func_globals,
977
nonmethod_func.func_name,
978
nonmethod_func.func_defaults,
979
nonmethod_func.func_closure)))
1655
new_function = copy_function(nonmethod_func)
1656
new_function = (dbus.service.signal(
1657
alt_interface,
1658
attribute._dbus_signature)(new_function))
1659
# Copy annotations, if any
1660
try:
1661
new_function._dbus_annotations = dict(
1662
attribute._dbus_annotations)
1663
except AttributeError:
1664
pass
1665
980
1666
# Define a creator of a function to call both the
981
# old and new functions, so both the old and new
982
# signals gets sent when the function is called
1667
# original and alternate functions, so both the
1668
# original and alternate signals gets sent when
1669
# the function is called
983
1670
def fixscope(func1, func2):
984
1671
"""This function is a scope container to pass
985
1672
func1 and func2 to the "call_both" function
986
1673
outside of its arguments"""
1674
1675
@functools.wraps(func2)
987
1676
def call_both(*args, **kwargs):
988
1677
"""This function will emit two D-Bus
989
1678
signals by calling func1 and func2"""
990
1679
func1(*args, **kwargs)
991
1680
func2(*args, **kwargs)
1681
# Make wrapper function look like a D-Bus
1682
# signal
1683
for name, attr in inspect.getmembers(func2):
1684
if name.startswith("_dbus_"):
1685
setattr(call_both, name, attr)
1686
992
1687
return call_both
993
1688
# Create the "call_both" function and add it to
994
1689
# the class
995
attr[attrname] = fixscope(attribute,
996
new_function)
1690
attr[attrname] = fixscope(attribute, new_function)
997
1691
# Is this a D-Bus method?
998
1692
elif getattr(attribute, "_dbus_is_method", False):
999
1693
# Create a new, but exactly alike, function
1000
1694
# object. Decorate it to be a new D-Bus method
1001
1695
# with the alternate D-Bus interface name. Add it
1002
1696
# to the class.
1003
attr[attrname] = (dbus.service.method
1004
(alt_interface,
1005
attribute._dbus_in_signature,
1006
attribute._dbus_out_signature)
1007
(types.FunctionType
1008
(attribute.func_code,
1009
attribute.func_globals,
1010
attribute.func_name,
1011
attribute.func_defaults,
1012
attribute.func_closure)))
1697
attr[attrname] = (
1698
dbus.service.method(
1699
alt_interface,
1700
attribute._dbus_in_signature,
1701
attribute._dbus_out_signature)
1702
(copy_function(attribute)))
1703
# Copy annotations, if any
1704
try:
1705
attr[attrname]._dbus_annotations = dict(
1706
attribute._dbus_annotations)
1707
except AttributeError:
1708
pass
1013
1709
# Is this a D-Bus property?
1014
1710
elif getattr(attribute, "_dbus_is_property", False):
1015
1711
# Create a new, but exactly alike, function
1016
1712
# object, and decorate it to be a new D-Bus
1017
1713
# property with the alternate D-Bus interface
1018
1714
# name. Add it to the class.
1019
attr[attrname] = (dbus_service_property
1020
(alt_interface,
1021
attribute._dbus_signature,
1022
attribute._dbus_access,
1023
attribute
1024
._dbus_get_args_options
1025
["byte_arrays"])
1026
(types.FunctionType
1027
(attribute.func_code,
1028
attribute.func_globals,
1029
attribute.func_name,
1030
attribute.func_defaults,
1031
attribute.func_closure)))
1032
return type.__new__(mcs, name, bases, attr)
1033
1034
1715
attr[attrname] = (dbus_service_property(
1716
alt_interface, attribute._dbus_signature,
1717
attribute._dbus_access,
1718
attribute._dbus_get_args_options
1719
["byte_arrays"])
1720
(copy_function(attribute)))
1721
# Copy annotations, if any
1722
try:
1723
attr[attrname]._dbus_annotations = dict(
1724
attribute._dbus_annotations)
1725
except AttributeError:
1726
pass
1727
# Is this a D-Bus interface?
1728
elif getattr(attribute, "_dbus_is_interface", False):
1729
# Create a new, but exactly alike, function
1730
# object. Decorate it to be a new D-Bus interface
1731
# with the alternate D-Bus interface name. Add it
1732
# to the class.
1733
attr[attrname] = (
1734
dbus_interface_annotations(alt_interface)
1735
(copy_function(attribute)))
1736
if deprecate:
1737
# Deprecate all alternate interfaces
1738
iname = "_AlternateDBusNames_interface_annotation{}"
1739
for interface_name in interface_names:
1740
1741
@dbus_interface_annotations(interface_name)
1742
def func(self):
1743
return {"org.freedesktop.DBus.Deprecated":
1744
"true"}
1745
# Find an unused name
1746
for aname in (iname.format(i)
1747
for i in itertools.count()):
1748
if aname not in attr:
1749
attr[aname] = func
1750
break
1751
if interface_names:
1752
# Replace the class with a new subclass of it with
1753
# methods, signals, etc. as created above.
1754
if sys.version_info.major == 2:
1755
cls = type(b"{}Alternate".format(cls.__name__),
1756
(cls, ), attr)
1757
else:
1758
cls = type("{}Alternate".format(cls.__name__),
1759
(cls, ), attr)
1760
return cls
1761
1762
return wrapper
1763
1764
1765
@alternate_dbus_interfaces({"se.recompile.Mandos":
1766
"se.bsnet.fukt.Mandos"})
1035
1767
class ClientDBus(Client, DBusObjectWithProperties):
1036
1768
"""A Client class using D-Bus
1037
1769
1038
1770
Attributes:
1039
1771
dbus_object_path: dbus.ObjectPath
1040
1772
bus: dbus.SystemBus()
1041
1773
"""
1042
1774
1043
1775
runtime_expansions = (Client.runtime_expansions
1044
+ ("dbus_object_path",))
1045
1776
+ ("dbus_object_path", ))
1777
1778
_interface = "se.recompile.Mandos.Client"
1779
1046
1780
# dbus.service.Object doesn't use super(), so we can't either.
1047
1048
def __init__(self, bus = None, *args, **kwargs):
1781
1782
def __init__(self, bus=None, *args, **kwargs):
1049
1783
self.bus = bus
1050
1784
Client.__init__(self, *args, **kwargs)
1051
1052
self._approvals_pending = 0
1053
1785
# Only now, when this client is initialized, can it show up on
1054
1786
# the D-Bus
1055
client_object_name = unicode(self.name).translate(
1787
client_object_name = str(self.name).translate(
1056
1788
{ord("."): ord("_"),
1057
1789
ord("-"): ord("_")})
1058
self.dbus_object_path = (dbus.ObjectPath
1059
("/clients/" + client_object_name))
1790
self.dbus_object_path = dbus.ObjectPath(
1791
"/clients/" + client_object_name)
1060
1792
DBusObjectWithProperties.__init__(self, self.bus,
1061
1793
self.dbus_object_path)
1062
1063
def notifychangeproperty(transform_func,
1064
dbus_name, type_func=lambda x: x,
1065
variant_level=1):
1794
1795
def notifychangeproperty(transform_func, dbus_name,
1796
type_func=lambda x: x,
1797
variant_level=1,
1798
invalidate_only=False,
1799
_interface=_interface):
1066
1800
""" Modify a variable so that it's a property which announces
1067
1801
its changes to DBus.
1068
1802
1069
1803
transform_fun: Function that takes a value and a variant_level
1070
1804
and transforms it to a D-Bus type.
1071
1805
dbus_name: D-Bus name of the variable
1073
1807
to the D-Bus. Default: no transform
1074
1808
variant_level: D-Bus variant level. Default: 1
1075
1809
"""
1076
attrname = "_{0}".format(dbus_name)
1810
attrname = "_{}".format(dbus_name)
1811
1077
1812
def setter(self, value):
1078
1813
if hasattr(self, "dbus_object_path"):
1079
1814
if (not hasattr(self, attrname) or
1080
1815
type_func(getattr(self, attrname, None))
1081
1816
!= type_func(value)):
1082
dbus_value = transform_func(type_func(value),
1083
variant_level
1084
=variant_level)
1085
self.PropertyChanged(dbus.String(dbus_name),
1086
dbus_value)
1817
if invalidate_only:
1818
self.PropertiesChanged(
1819
_interface, dbus.Dictionary(),
1820
dbus.Array((dbus_name, )))
1821
else:
1822
dbus_value = transform_func(
1823
type_func(value),
1824
variant_level=variant_level)
1825
self.PropertyChanged(dbus.String(dbus_name),
1826
dbus_value)
1827
self.PropertiesChanged(
1828
_interface,
1829
dbus.Dictionary({dbus.String(dbus_name):
1830
dbus_value}),
1831
dbus.Array())
1087
1832
setattr(self, attrname, value)
1088
1833
1089
1834
return property(lambda self: getattr(self, attrname), setter)
1090
1091
1835
1092
1836
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1093
1837
approvals_pending = notifychangeproperty(dbus.Boolean,
1094
1838
"ApprovalPending",
1095
type_func = bool)
1839
type_func=bool)
1096
1840
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1097
1841
last_enabled = notifychangeproperty(datetime_to_dbus,
1098
1842
"LastEnabled")
1099
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1100
type_func = lambda checker:
1101
checker is not None)
1843
checker = notifychangeproperty(
1844
dbus.Boolean, "CheckerRunning",
1845
type_func=lambda checker: checker is not None)
1102
1846
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1103
1847
"LastCheckedOK")
1848
last_checker_status = notifychangeproperty(dbus.Int16,
1849
"LastCheckerStatus")
1104
1850
last_approval_request = notifychangeproperty(
1105
1851
datetime_to_dbus, "LastApprovalRequest")
1106
1852
approved_by_default = notifychangeproperty(dbus.Boolean,
1107
1853
"ApprovedByDefault")
1108
approval_delay = notifychangeproperty(dbus.UInt64,
1109
"ApprovalDelay",
1110
type_func =
1111
timedelta_to_milliseconds)
1854
approval_delay = notifychangeproperty(
1855
dbus.UInt64, "ApprovalDelay",
1856
type_func=lambda td: td.total_seconds() * 1000)
1112
1857
approval_duration = notifychangeproperty(
1113
1858
dbus.UInt64, "ApprovalDuration",
1114
type_func = timedelta_to_milliseconds)
1859
type_func=lambda td: td.total_seconds() * 1000)
1115
1860
host = notifychangeproperty(dbus.String, "Host")
1116
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1117
type_func =
1118
timedelta_to_milliseconds)
1861
timeout = notifychangeproperty(
1862
dbus.UInt64, "Timeout",
1863
type_func=lambda td: td.total_seconds() * 1000)
1119
1864
extended_timeout = notifychangeproperty(
1120
1865
dbus.UInt64, "ExtendedTimeout",
1121
type_func = timedelta_to_milliseconds)
1122
interval = notifychangeproperty(dbus.UInt64,
1123
"Interval",
1124
type_func =
1125
timedelta_to_milliseconds)
1866
type_func=lambda td: td.total_seconds() * 1000)
1867
interval = notifychangeproperty(
1868
dbus.UInt64, "Interval",
1869
type_func=lambda td: td.total_seconds() * 1000)
1126
1870
checker_command = notifychangeproperty(dbus.String, "Checker")
1127
1871
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1872
invalidate_only=True)
1873
1128
1874
del notifychangeproperty
1129
1875
1130
1876
def __del__(self, *args, **kwargs):
1131
1877
try:
1132
1878
self.remove_from_connection()
1135
1881
if hasattr(DBusObjectWithProperties, "__del__"):
1136
1882
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1137
1883
Client.__del__(self, *args, **kwargs)
1138
1139
def checker_callback(self, pid, condition, command,
1140
*args, **kwargs):
1141
self.checker_callback_tag = None
1142
self.checker = None
1143
if os.WIFEXITED(condition):
1144
exitstatus = os.WEXITSTATUS(condition)
1884
1885
def checker_callback(self, source, condition,
1886
connection, command, *args, **kwargs):
1887
ret = Client.checker_callback(self, source, condition,
1888
connection, command, *args,
1889
**kwargs)
1890
exitstatus = self.last_checker_status
1891
if exitstatus >= 0:
1145
1892
# Emit D-Bus signal
1146
1893
self.CheckerCompleted(dbus.Int16(exitstatus),
1147
dbus.Int64(condition),
1894
# This is specific to GNU libC
1895
dbus.Int64(exitstatus << 8),
1148
1896
dbus.String(command))
1149
1897
else:
1150
1898
# Emit D-Bus signal
1151
1899
self.CheckerCompleted(dbus.Int16(-1),
1152
dbus.Int64(condition),
1900
dbus.Int64(
1901
# This is specific to GNU libC
1902
(exitstatus << 8)
1903
| self.last_checker_signal),
1153
1904
dbus.String(command))
1154
1155
return Client.checker_callback(self, pid, condition, command,
1156
*args, **kwargs)
1157
1905
return ret
1906
1158
1907
def start_checker(self, *args, **kwargs):
1159
old_checker = self.checker
1160
if self.checker is not None:
1161
old_checker_pid = self.checker.pid
1162
else:
1163
old_checker_pid = None
1908
old_checker_pid = getattr(self.checker, "pid", None)
1164
1909
r = Client.start_checker(self, *args, **kwargs)
1165
1910
# Only if new checker process was started
1166
1911
if (self.checker is not None
1168
1913
# Emit D-Bus signal
1169
1914
self.CheckerStarted(self.current_checker_command)
1170
1915
return r
1171
1916
1172
1917
def _reset_approved(self):
1173
1918
self.approved = None
1174
1919
return False
1175
1920
1176
1921
def approve(self, value=True):
1177
self.send_changedstate()
1178
1922
self.approved = value
1179
gobject.timeout_add(timedelta_to_milliseconds
1180
(self.approval_duration),
1181
self._reset_approved)
1182
1183
1184
## D-Bus methods, signals & properties
1185
_interface = "se.recompile.Mandos.Client"
1186
1187
## Signals
1188
1923
GLib.timeout_add(int(self.approval_duration.total_seconds()
1924
* 1000), self._reset_approved)
1925
self.send_changedstate()
1926
1927
# D-Bus methods, signals & properties
1928
1929
# Interfaces
1930
1931
# Signals
1932
1189
1933
# CheckerCompleted - signal
1190
1934
@dbus.service.signal(_interface, signature="nxs")
1191
1935
def CheckerCompleted(self, exitcode, waitstatus, command):
1192
1936
"D-Bus signal"
1193
1937
pass
1194
1938
1195
1939
# CheckerStarted - signal
1196
1940
@dbus.service.signal(_interface, signature="s")
1197
1941
def CheckerStarted(self, command):
1198
1942
"D-Bus signal"
1199
1943
pass
1200
1944
1201
1945
# PropertyChanged - signal
1946
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1202
1947
@dbus.service.signal(_interface, signature="sv")
1203
1948
def PropertyChanged(self, property, value):
1204
1949
"D-Bus signal"
1205
1950
pass
1206
1951
1207
1952
# GotSecret - signal
1208
1953
@dbus.service.signal(_interface)
1209
1954
def GotSecret(self):
1212
1957
server to mandos-client
1213
1958
"""
1214
1959
pass
1215
1960
1216
1961
# Rejected - signal
1217
1962
@dbus.service.signal(_interface, signature="s")
1218
1963
def Rejected(self, reason):
1219
1964
"D-Bus signal"
1220
1965
pass
1221
1966
1222
1967
# NeedApproval - signal
1223
1968
@dbus.service.signal(_interface, signature="tb")
1224
1969
def NeedApproval(self, timeout, default):
1225
1970
"D-Bus signal"
1226
1971
return self.need_approval()
1227
1228
# NeRwequest - signal
1229
@dbus.service.signal(_interface, signature="s")
1230
def NewRequest(self, ip):
1231
"""D-Bus signal
1232
Is sent after a client request a password.
1233
"""
1234
pass
1235
1236
## Methods
1237
1972
1973
# Methods
1974
1238
1975
# Approve - method
1239
1976
@dbus.service.method(_interface, in_signature="b")
1240
1977
def Approve(self, value):
1241
1978
self.approve(value)
1242
1979
1243
1980
# CheckedOK - method
1244
1981
@dbus.service.method(_interface)
1245
1982
def CheckedOK(self):
1246
1983
self.checked_ok()
1247
1984
1248
1985
# Enable - method
1986
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1249
1987
@dbus.service.method(_interface)
1250
1988
def Enable(self):
1251
1989
"D-Bus method"
1252
1990
self.enable()
1253
1991
1254
1992
# StartChecker - method
1993
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1255
1994
@dbus.service.method(_interface)
1256
1995
def StartChecker(self):
1257
1996
"D-Bus method"
1258
1997
self.start_checker()
1259
1998
1260
1999
# Disable - method
2000
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1261
2001
@dbus.service.method(_interface)
1262
2002
def Disable(self):
1263
2003
"D-Bus method"
1264
2004
self.disable()
1265
2005
1266
2006
# StopChecker - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1267
2008
@dbus.service.method(_interface)
1268
2009
def StopChecker(self):
1269
2010
self.stop_checker()
1270
1271
## Properties
1272
2011
2012
# Properties
2013
1273
2014
# ApprovalPending - property
1274
2015
@dbus_service_property(_interface, signature="b", access="read")
1275
2016
def ApprovalPending_dbus_property(self):
1276
2017
return dbus.Boolean(bool(self.approvals_pending))
1277
2018
1278
2019
# ApprovedByDefault - property
1279
@dbus_service_property(_interface, signature="b",
2020
@dbus_service_property(_interface,
2021
signature="b",
1280
2022
access="readwrite")
1281
2023
def ApprovedByDefault_dbus_property(self, value=None):
1282
2024
if value is None: # get
1283
2025
return dbus.Boolean(self.approved_by_default)
1284
2026
self.approved_by_default = bool(value)
1285
2027
1286
2028
# ApprovalDelay - property
1287
@dbus_service_property(_interface, signature="t",
2029
@dbus_service_property(_interface,
2030
signature="t",
1288
2031
access="readwrite")
1289
2032
def ApprovalDelay_dbus_property(self, value=None):
1290
2033
if value is None: # get
1291
return dbus.UInt64(self.approval_delay_milliseconds())
2034
return dbus.UInt64(self.approval_delay.total_seconds()
2035
* 1000)
1292
2036
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1293
2037
1294
2038
# ApprovalDuration - property
1295
@dbus_service_property(_interface, signature="t",
2039
@dbus_service_property(_interface,
2040
signature="t",
1296
2041
access="readwrite")
1297
2042
def ApprovalDuration_dbus_property(self, value=None):
1298
2043
if value is None: # get
1299
return dbus.UInt64(timedelta_to_milliseconds(
1300
self.approval_duration))
2044
return dbus.UInt64(self.approval_duration.total_seconds()
2045
* 1000)
1301
2046
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1302
2047
1303
2048
# Name - property
2049
@dbus_annotations(
2050
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1304
2051
@dbus_service_property(_interface, signature="s", access="read")
1305
2052
def Name_dbus_property(self):
1306
2053
return dbus.String(self.name)
1307
2054
2055
# KeyID - property
2056
@dbus_annotations(
2057
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2058
@dbus_service_property(_interface, signature="s", access="read")
2059
def KeyID_dbus_property(self):
2060
return dbus.String(self.key_id)
2061
1308
2062
# Fingerprint - property
2063
@dbus_annotations(
2064
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1309
2065
@dbus_service_property(_interface, signature="s", access="read")
1310
2066
def Fingerprint_dbus_property(self):
1311
2067
return dbus.String(self.fingerprint)
1312
2068
1313
2069
# Host - property
1314
@dbus_service_property(_interface, signature="s",
2070
@dbus_service_property(_interface,
2071
signature="s",
1315
2072
access="readwrite")
1316
2073
def Host_dbus_property(self, value=None):
1317
2074
if value is None: # get
1318
2075
return dbus.String(self.host)
1319
self.host = unicode(value)
1320
2076
self.host = str(value)
2077
1321
2078
# Created - property
2079
@dbus_annotations(
2080
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1322
2081
@dbus_service_property(_interface, signature="s", access="read")
1323
2082
def Created_dbus_property(self):
1324
2083
return datetime_to_dbus(self.created)
1325
2084
1326
2085
# LastEnabled - property
1327
2086
@dbus_service_property(_interface, signature="s", access="read")
1328
2087
def LastEnabled_dbus_property(self):
1329
2088
return datetime_to_dbus(self.last_enabled)
1330
2089
1331
2090
# Enabled - property
1332
@dbus_service_property(_interface, signature="b",
2091
@dbus_service_property(_interface,
2092
signature="b",
1333
2093
access="readwrite")
1334
2094
def Enabled_dbus_property(self, value=None):
1335
2095
if value is None: # get
1338
2098
self.enable()
1339
2099
else:
1340
2100
self.disable()
1341
2101
1342
2102
# LastCheckedOK - property
1343
@dbus_service_property(_interface, signature="s",
2103
@dbus_service_property(_interface,
2104
signature="s",
1344
2105
access="readwrite")
1345
2106
def LastCheckedOK_dbus_property(self, value=None):
1346
2107
if value is not None:
1347
2108
self.checked_ok()
1348
2109
return
1349
2110
return datetime_to_dbus(self.last_checked_ok)
1350
2111
2112
# LastCheckerStatus - property
2113
@dbus_service_property(_interface, signature="n", access="read")
2114
def LastCheckerStatus_dbus_property(self):
2115
return dbus.Int16(self.last_checker_status)
2116
1351
2117
# Expires - property
1352
2118
@dbus_service_property(_interface, signature="s", access="read")
1353
2119
def Expires_dbus_property(self):
1354
2120
return datetime_to_dbus(self.expires)
1355
2121
1356
2122
# LastApprovalRequest - property
1357
2123
@dbus_service_property(_interface, signature="s", access="read")
1358
2124
def LastApprovalRequest_dbus_property(self):
1359
2125
return datetime_to_dbus(self.last_approval_request)
1360
2126
1361
2127
# Timeout - property
1362
@dbus_service_property(_interface, signature="t",
2128
@dbus_service_property(_interface,
2129
signature="t",
1363
2130
access="readwrite")
1364
2131
def Timeout_dbus_property(self, value=None):
1365
2132
if value is None: # get
1366
return dbus.UInt64(self.timeout_milliseconds())
2133
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2134
old_timeout = self.timeout
1367
2135
self.timeout = datetime.timedelta(0, 0, 0, value)
1368
if getattr(self, "disable_initiator_tag", None) is None:
1369
return
1370
# Reschedule timeout
1371
gobject.source_remove(self.disable_initiator_tag)
1372
self.disable_initiator_tag = None
1373
self.expires = None
1374
time_to_die = timedelta_to_milliseconds((self
1375
.last_checked_ok
1376
+ self.timeout)
1377
- datetime.datetime
1378
.utcnow())
1379
if time_to_die <= 0:
1380
# The timeout has passed
1381
self.disable()
1382
else:
1383
self.expires = (datetime.datetime.utcnow()
1384
+ datetime.timedelta(milliseconds =
1385
time_to_die))
1386
self.disable_initiator_tag = (gobject.timeout_add
1387
(time_to_die, self.disable))
1388
2136
# Reschedule disabling
2137
if self.enabled:
2138
now = datetime.datetime.utcnow()
2139
self.expires += self.timeout - old_timeout
2140
if self.expires <= now:
2141
# The timeout has passed
2142
self.disable()
2143
else:
2144
if (getattr(self, "disable_initiator_tag", None)
2145
is None):
2146
return
2147
GLib.source_remove(self.disable_initiator_tag)
2148
self.disable_initiator_tag = GLib.timeout_add(
2149
int((self.expires - now).total_seconds() * 1000),
2150
self.disable)
2151
1389
2152
# ExtendedTimeout - property
1390
@dbus_service_property(_interface, signature="t",
2153
@dbus_service_property(_interface,
2154
signature="t",
1391
2155
access="readwrite")
1392
2156
def ExtendedTimeout_dbus_property(self, value=None):
1393
2157
if value is None: # get
1394
return dbus.UInt64(self.extended_timeout_milliseconds())
2158
return dbus.UInt64(self.extended_timeout.total_seconds()
2159
* 1000)
1395
2160
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1396
2161
1397
2162
# Interval - property
1398
@dbus_service_property(_interface, signature="t",
2163
@dbus_service_property(_interface,
2164
signature="t",
1399
2165
access="readwrite")
1400
2166
def Interval_dbus_property(self, value=None):
1401
2167
if value is None: # get
1402
return dbus.UInt64(self.interval_milliseconds())
2168
return dbus.UInt64(self.interval.total_seconds() * 1000)
1403
2169
self.interval = datetime.timedelta(0, 0, 0, value)
1404
2170
if getattr(self, "checker_initiator_tag", None) is None:
1405
2171
return
1406
2172
if self.enabled:
1407
2173
# Reschedule checker run
1408
gobject.source_remove(self.checker_initiator_tag)
1409
self.checker_initiator_tag = (gobject.timeout_add
1410
(value, self.start_checker))
1411
self.start_checker() # Start one now, too
1412
2174
GLib.source_remove(self.checker_initiator_tag)
2175
self.checker_initiator_tag = GLib.timeout_add(
2176
value, self.start_checker)
2177
self.start_checker() # Start one now, too
2178
1413
2179
# Checker - property
1414
@dbus_service_property(_interface, signature="s",
2180
@dbus_service_property(_interface,
2181
signature="s",
1415
2182
access="readwrite")
1416
2183
def Checker_dbus_property(self, value=None):
1417
2184
if value is None: # get
1418
2185
return dbus.String(self.checker_command)
1419
self.checker_command = unicode(value)
1420
2186
self.checker_command = str(value)
2187
1421
2188
# CheckerRunning - property
1422
@dbus_service_property(_interface, signature="b",
2189
@dbus_service_property(_interface,
2190
signature="b",
1423
2191
access="readwrite")
1424
2192
def CheckerRunning_dbus_property(self, value=None):
1425
2193
if value is None: # get
1428
2196
self.start_checker()
1429
2197
else:
1430
2198
self.stop_checker()
1431
2199
1432
2200
# ObjectPath - property
2201
@dbus_annotations(
2202
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2203
"org.freedesktop.DBus.Deprecated": "true"})
1433
2204
@dbus_service_property(_interface, signature="o", access="read")
1434
2205
def ObjectPath_dbus_property(self):
1435
return self.dbus_object_path # is already a dbus.ObjectPath
1436
2206
return self.dbus_object_path # is already a dbus.ObjectPath
2207
1437
2208
# Secret = property
1438
@dbus_service_property(_interface, signature="ay",
1439
access="write", byte_arrays=True)
2209
@dbus_annotations(
2210
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2211
"invalidates"})
2212
@dbus_service_property(_interface,
2213
signature="ay",
2214
access="write",
2215
byte_arrays=True)
1440
2216
def Secret_dbus_property(self, value):
1441
self.secret = str(value)
1442
2217
self.secret = bytes(value)
2218
1443
2219
del _interface
1444
2220
1445
2221
1446
2222
class ProxyClient(object):
1447
def __init__(self, child_pipe, fpr, address):
2223
def __init__(self, child_pipe, key_id, fpr, address):
1448
2224
self._pipe = child_pipe
1449
self._pipe.send(('init', fpr, address))
2225
self._pipe.send(('init', key_id, fpr, address))
1450
2226
if not self._pipe.recv():
1451
raise KeyError()
1452
2227
raise KeyError(key_id or fpr)
2228
1453
2229
def __getattribute__(self, name):
1454
2230
if name == '_pipe':
1455
2231
return super(ProxyClient, self).__getattribute__(name)
1458
2234
if data[0] == 'data':
1459
2235
return data[1]
1460
2236
if data[0] == 'function':
2237
1461
2238
def func(*args, **kwargs):
1462
2239
self._pipe.send(('funcall', name, args, kwargs))
1463
2240
return self._pipe.recv()[1]
2241
1464
2242
return func
1465
2243
1466
2244
def __setattr__(self, name, value):
1467
2245
if name == '_pipe':
1468
2246
return super(ProxyClient, self).__setattr__(name, value)
1469
2247
self._pipe.send(('setattr', name, value))
1470
2248
1471
2249
1472
class ClientDBusTransitional(ClientDBus):
1473
__metaclass__ = AlternateDBusNamesMetaclass
1474
1475
1476
2250
class ClientHandler(socketserver.BaseRequestHandler, object):
1477
2251
"""A class to handle client connections.
1478
2252
1479
2253
Instantiated once for each connection to handle it.
1480
2254
Note: This will run in its own forked process."""
1481
2255
1482
2256
def handle(self):
1483
2257
with contextlib.closing(self.server.child_pipe) as child_pipe:
1484
2258
logger.info("TCP connection from: %s",
1485
unicode(self.client_address))
2259
str(self.client_address))
1486
2260
logger.debug("Pipe FD: %d",
1487
2261
self.server.child_pipe.fileno())
1488
1489
session = (gnutls.connection
1490
.ClientSession(self.request,
1491
gnutls.connection
1492
.X509Credentials()))
1493
1494
# Note: gnutls.connection.X509Credentials is really a
1495
# generic GnuTLS certificate credentials object so long as
1496
# no X.509 keys are added to it. Therefore, we can use it
1497
# here despite using OpenPGP certificates.
1498
1499
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1500
# "+AES-256-CBC", "+SHA1",
1501
# "+COMP-NULL", "+CTYPE-OPENPGP",
1502
# "+DHE-DSS"))
2262
2263
session = gnutls.ClientSession(self.request)
2264
2265
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2266
# "+AES-256-CBC", "+SHA1",
2267
# "+COMP-NULL", "+CTYPE-OPENPGP",
2268
# "+DHE-DSS"))
1503
2269
# Use a fallback default, since this MUST be set.
1504
2270
priority = self.server.gnutls_priority
1505
2271
if priority is None:
1506
2272
priority = "NORMAL"
1507
(gnutls.library.functions
1508
.gnutls_priority_set_direct(session._c_object,
1509
priority, None))
1510
2273
gnutls.priority_set_direct(session._c_object,
2274
priority.encode("utf-8"),
2275
None)
2276
1511
2277
# Start communication using the Mandos protocol
1512
2278
# Get protocol number
1513
2279
line = self.request.makefile().readline()
1514
2280
logger.debug("Protocol version: %r", line)
1515
2281
try:
1516
2282
if int(line.strip().split()[0]) > 1:
1517
raise RuntimeError
2283
raise RuntimeError(line)
1518
2284
except (ValueError, IndexError, RuntimeError) as error:
1519
2285
logger.error("Unknown protocol version: %s", error)
1520
2286
return
1521
2287
1522
2288
# Start GnuTLS connection
1523
2289
try:
1524
2290
session.handshake()
1525
except gnutls.errors.GNUTLSError as error:
2291
except gnutls.Error as error:
1526
2292
logger.warning("Handshake failed: %s", error)
1527
2293
# Do not run session.bye() here: the session is not
1528
2294
# established. Just abandon the request.
1529
2295
return
1530
2296
logger.debug("Handshake succeeded")
1531
2297
1532
2298
approval_required = False
1533
2299
try:
1534
try:
1535
fpr = self.fingerprint(self.peer_certificate
1536
(session))
1537
except (TypeError,
1538
gnutls.errors.GNUTLSError) as error:
1539
logger.warning("Bad certificate: %s", error)
1540
return
1541
logger.debug("Fingerprint: %s", fpr)
1542
1543
try:
1544
client = ProxyClient(child_pipe, fpr,
2300
if gnutls.has_rawpk:
2301
fpr = ""
2302
try:
2303
key_id = self.key_id(
2304
self.peer_certificate(session))
2305
except (TypeError, gnutls.Error) as error:
2306
logger.warning("Bad certificate: %s", error)
2307
return
2308
logger.debug("Key ID: %s", key_id)
2309
2310
else:
2311
key_id = ""
2312
try:
2313
fpr = self.fingerprint(
2314
self.peer_certificate(session))
2315
except (TypeError, gnutls.Error) as error:
2316
logger.warning("Bad certificate: %s", error)
2317
return
2318
logger.debug("Fingerprint: %s", fpr)
2319
2320
try:
2321
client = ProxyClient(child_pipe, key_id, fpr,
1545
2322
self.client_address)
1546
2323
except KeyError:
1547
2324
return
1548
1549
if self.server.use_dbus:
1550
# Emit D-Bus signal
1551
client.NewRequest(str(self.client_address))
1552
2325
1553
2326
if client.approval_delay:
1554
2327
delay = client.approval_delay
1555
2328
client.approvals_pending += 1
1556
2329
approval_required = True
1557
2330
1558
2331
while True:
1559
2332
if not client.enabled:
1560
2333
logger.info("Client %s is disabled",
1561
client.name)
2334
client.name)
1562
2335
if self.server.use_dbus:
1563
2336
# Emit D-Bus signal
1564
2337
client.Rejected("Disabled")
1565
2338
return
1566
2339
1567
2340
if client.approved or not client.approval_delay:
1568
#We are approved or approval is disabled
2341
# We are approved or approval is disabled
1569
2342
break
1570
2343
elif client.approved is None:
1571
2344
logger.info("Client %s needs approval",
1573
2346
if self.server.use_dbus:
1574
2347
# Emit D-Bus signal
1575
2348
client.NeedApproval(
1576
client.approval_delay_milliseconds(),
1577
client.approved_by_default)
2349
client.approval_delay.total_seconds()
2350
* 1000, client.approved_by_default)
1578
2351
else:
1579
2352
logger.warning("Client %s was not approved",
1580
2353
client.name)
1582
2355
# Emit D-Bus signal
1583
2356
client.Rejected("Denied")
1584
2357
return
1585
1586
#wait until timeout or approved
2358
2359
# wait until timeout or approved
1587
2360
time = datetime.datetime.now()
1588
2361
client.changedstate.acquire()
1589
(client.changedstate.wait
1590
(float(client.timedelta_to_milliseconds(delay)
1591
/ 1000)))
2362
client.changedstate.wait(delay.total_seconds())
1592
2363
client.changedstate.release()
1593
2364
time2 = datetime.datetime.now()
1594
2365
if (time2 - time) >= delay:
1604
2375
break
1605
2376
else:
1606
2377
delay -= time2 - time
1607
1608
sent_size = 0
1609
while sent_size < len(client.secret):
1610
try:
1611
sent = session.send(client.secret[sent_size:])
1612
except gnutls.errors.GNUTLSError as error:
1613
logger.warning("gnutls send failed")
1614
return
1615
logger.debug("Sent: %d, remaining: %d",
1616
sent, len(client.secret)
1617
- (sent_size + sent))
1618
sent_size += sent
1619
2378
2379
try:
2380
session.send(client.secret)
2381
except gnutls.Error as error:
2382
logger.warning("gnutls send failed",
2383
exc_info=error)
2384
return
2385
1620
2386
logger.info("Sending secret to %s", client.name)
1621
2387
# bump the timeout using extended_timeout
1622
client.checked_ok(client.extended_timeout)
2388
client.bump_timeout(client.extended_timeout)
1623
2389
if self.server.use_dbus:
1624
2390
# Emit D-Bus signal
1625
2391
client.GotSecret()
1626
2392
1627
2393
finally:
1628
2394
if approval_required:
1629
2395
client.approvals_pending -= 1
1630
2396
try:
1631
2397
session.bye()
1632
except gnutls.errors.GNUTLSError as error:
1633
logger.warning("GnuTLS bye failed")
1634
2398
except gnutls.Error as error:
2399
logger.warning("GnuTLS bye failed",
2400
exc_info=error)
2401
1635
2402
@staticmethod
1636
2403
def peer_certificate(session):
1637
"Return the peer's OpenPGP certificate as a bytestring"
1638
# If not an OpenPGP certificate...
1639
if (gnutls.library.functions
1640
.gnutls_certificate_type_get(session._c_object)
1641
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1642
# ...do the normal thing
1643
return session.peer_certificate
2404
"Return the peer's certificate as a bytestring"
2405
try:
2406
cert_type = gnutls.certificate_type_get2(session._c_object,
2407
gnutls.CTYPE_PEERS)
2408
except AttributeError:
2409
cert_type = gnutls.certificate_type_get(session._c_object)
2410
if gnutls.has_rawpk:
2411
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2412
else:
2413
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2414
# If not a valid certificate type...
2415
if cert_type not in valid_cert_types:
2416
logger.info("Cert type %r not in %r", cert_type,
2417
valid_cert_types)
2418
# ...return invalid data
2419
return b""
1644
2420
list_size = ctypes.c_uint(1)
1645
cert_list = (gnutls.library.functions
1646
.gnutls_certificate_get_peers
2421
cert_list = (gnutls.certificate_get_peers
1647
2422
(session._c_object, ctypes.byref(list_size)))
1648
2423
if not bool(cert_list) and list_size.value != 0:
1649
raise gnutls.errors.GNUTLSError("error getting peer"
1650
" certificate")
2424
raise gnutls.Error("error getting peer certificate")
1651
2425
if list_size.value == 0:
1652
2426
return None
1653
2427
cert = cert_list[0]
1654
2428
return ctypes.string_at(cert.data, cert.size)
1655
2429
2430
@staticmethod
2431
def key_id(certificate):
2432
"Convert a certificate bytestring to a hexdigit key ID"
2433
# New GnuTLS "datum" with the public key
2434
datum = gnutls.datum_t(
2435
ctypes.cast(ctypes.c_char_p(certificate),
2436
ctypes.POINTER(ctypes.c_ubyte)),
2437
ctypes.c_uint(len(certificate)))
2438
# XXX all these need to be created in the gnutls "module"
2439
# New empty GnuTLS certificate
2440
pubkey = gnutls.pubkey_t()
2441
gnutls.pubkey_init(ctypes.byref(pubkey))
2442
# Import the raw public key into the certificate
2443
gnutls.pubkey_import(pubkey,
2444
ctypes.byref(datum),
2445
gnutls.X509_FMT_DER)
2446
# New buffer for the key ID
2447
buf = ctypes.create_string_buffer(32)
2448
buf_len = ctypes.c_size_t(len(buf))
2449
# Get the key ID from the raw public key into the buffer
2450
gnutls.pubkey_get_key_id(pubkey,
2451
gnutls.KEYID_USE_SHA256,
2452
ctypes.cast(ctypes.byref(buf),
2453
ctypes.POINTER(ctypes.c_ubyte)),
2454
ctypes.byref(buf_len))
2455
# Deinit the certificate
2456
gnutls.pubkey_deinit(pubkey)
2457
2458
# Convert the buffer to a Python bytestring
2459
key_id = ctypes.string_at(buf, buf_len.value)
2460
# Convert the bytestring to hexadecimal notation
2461
hex_key_id = binascii.hexlify(key_id).upper()
2462
return hex_key_id
2463
1656
2464
@staticmethod
1657
2465
def fingerprint(openpgp):
1658
2466
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1659
2467
# New GnuTLS "datum" with the OpenPGP public key
1660
datum = (gnutls.library.types
1661
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1662
ctypes.POINTER
1663
(ctypes.c_ubyte)),
1664
ctypes.c_uint(len(openpgp))))
2468
datum = gnutls.datum_t(
2469
ctypes.cast(ctypes.c_char_p(openpgp),
2470
ctypes.POINTER(ctypes.c_ubyte)),
2471
ctypes.c_uint(len(openpgp)))
1665
2472
# New empty GnuTLS certificate
1666
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1667
(gnutls.library.functions
1668
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2473
crt = gnutls.openpgp_crt_t()
2474
gnutls.openpgp_crt_init(ctypes.byref(crt))
1669
2475
# Import the OpenPGP public key into the certificate
1670
(gnutls.library.functions
1671
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1672
gnutls.library.constants
1673
.GNUTLS_OPENPGP_FMT_RAW))
2476
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2477
gnutls.OPENPGP_FMT_RAW)
1674
2478
# Verify the self signature in the key
1675
2479
crtverify = ctypes.c_uint()
1676
(gnutls.library.functions
1677
.gnutls_openpgp_crt_verify_self(crt, 0,
1678
ctypes.byref(crtverify)))
2480
gnutls.openpgp_crt_verify_self(crt, 0,
2481
ctypes.byref(crtverify))
1679
2482
if crtverify.value != 0:
1680
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1681
raise (gnutls.errors.CertificateSecurityError
1682
("Verify failed"))
2483
gnutls.openpgp_crt_deinit(crt)
2484
raise gnutls.CertificateSecurityError(code
2485
=crtverify.value)
1683
2486
# New buffer for the fingerprint
1684
2487
buf = ctypes.create_string_buffer(20)
1685
2488
buf_len = ctypes.c_size_t()
1686
2489
# Get the fingerprint from the certificate into the buffer
1687
(gnutls.library.functions
1688
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1689
ctypes.byref(buf_len)))
2490
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2491
ctypes.byref(buf_len))
1690
2492
# Deinit the certificate
1691
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2493
gnutls.openpgp_crt_deinit(crt)
1692
2494
# Convert the buffer to a Python bytestring
1693
2495
fpr = ctypes.string_at(buf, buf_len.value)
1694
2496
# Convert the bytestring to hexadecimal notation
1698
2500
1699
2501
class MultiprocessingMixIn(object):
1700
2502
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2503
1701
2504
def sub_process_main(self, request, address):
1702
2505
try:
1703
2506
self.finish_request(request, address)
1704
2507
except Exception:
1705
2508
self.handle_error(request, address)
1706
2509
self.close_request(request)
1707
2510
1708
2511
def process_request(self, request, address):
1709
2512
"""Start a new process to process the request."""
1710
proc = multiprocessing.Process(target = self.sub_process_main,
1711
args = (request,
1712
address))
2513
proc = multiprocessing.Process(target=self.sub_process_main,
2514
args=(request, address))
1713
2515
proc.start()
1714
2516
return proc
1715
2517
1716
2518
1717
2519
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1718
2520
""" adds a pipe to the MixIn """
2521
1719
2522
def process_request(self, request, client_address):
1720
2523
"""Overrides and wraps the original process_request().
1721
2524
1722
2525
This function creates a new pipe in self.pipe
1723
2526
"""
1724
2527
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1725
2528
1726
2529
proc = MultiprocessingMixIn.process_request(self, request,
1727
2530
client_address)
1728
2531
self.child_pipe.close()
1729
2532
self.add_pipe(parent_pipe, proc)
1730
2533
1731
2534
def add_pipe(self, parent_pipe, proc):
1732
2535
"""Dummy function; override as necessary"""
1733
raise NotImplementedError
2536
raise NotImplementedError()
1734
2537
1735
2538
1736
2539
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1737
2540
socketserver.TCPServer, object):
1738
2541
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1739
2542
1740
2543
Attributes:
1741
2544
enabled: Boolean; whether this server is activated yet
1742
2545
interface: None or a network interface name (string)
1743
2546
use_ipv6: Boolean; to use IPv6 or not
1744
2547
"""
2548
1745
2549
def __init__(self, server_address, RequestHandlerClass,
1746
interface=None, use_ipv6=True):
2550
interface=None,
2551
use_ipv6=True,
2552
socketfd=None):
2553
"""If socketfd is set, use that file descriptor instead of
2554
creating a new one with socket.socket().
2555
"""
1747
2556
self.interface = interface
1748
2557
if use_ipv6:
1749
2558
self.address_family = socket.AF_INET6
2559
if socketfd is not None:
2560
# Save the file descriptor
2561
self.socketfd = socketfd
2562
# Save the original socket.socket() function
2563
self.socket_socket = socket.socket
2564
2565
# To implement --socket, we monkey patch socket.socket.
2566
#
2567
# (When socketserver.TCPServer is a new-style class, we
2568
# could make self.socket into a property instead of monkey
2569
# patching socket.socket.)
2570
#
2571
# Create a one-time-only replacement for socket.socket()
2572
@functools.wraps(socket.socket)
2573
def socket_wrapper(*args, **kwargs):
2574
# Restore original function so subsequent calls are
2575
# not affected.
2576
socket.socket = self.socket_socket
2577
del self.socket_socket
2578
# This time only, return a new socket object from the
2579
# saved file descriptor.
2580
return socket.fromfd(self.socketfd, *args, **kwargs)
2581
# Replace socket.socket() function with wrapper
2582
socket.socket = socket_wrapper
2583
# The socketserver.TCPServer.__init__ will call
2584
# socket.socket(), which might be our replacement,
2585
# socket_wrapper(), if socketfd was set.
1750
2586
socketserver.TCPServer.__init__(self, server_address,
1751
2587
RequestHandlerClass)
2588
1752
2589
def server_bind(self):
1753
2590
"""This overrides the normal server_bind() function
1754
2591
to bind to an interface if one was specified, and also NOT to
1755
2592
bind to an address or port if they were not specified."""
2593
global SO_BINDTODEVICE
1756
2594
if self.interface is not None:
1757
2595
if SO_BINDTODEVICE is None:
1758
logger.error("SO_BINDTODEVICE does not exist;"
1759
" cannot bind to interface %s",
1760
self.interface)
1761
else:
1762
try:
1763
self.socket.setsockopt(socket.SOL_SOCKET,
1764
SO_BINDTODEVICE,
1765
str(self.interface
1766
+ '\0'))
1767
except socket.error as error:
1768
if error[0] == errno.EPERM:
1769
logger.error("No permission to"
1770
" bind to interface %s",
1771
self.interface)
1772
elif error[0] == errno.ENOPROTOOPT:
1773
logger.error("SO_BINDTODEVICE not available;"
1774
" cannot bind to interface %s",
1775
self.interface)
1776
else:
1777
raise
2596
# Fall back to a hard-coded value which seems to be
2597
# common enough.
2598
logger.warning("SO_BINDTODEVICE not found, trying 25")
2599
SO_BINDTODEVICE = 25
2600
try:
2601
self.socket.setsockopt(
2602
socket.SOL_SOCKET, SO_BINDTODEVICE,
2603
(self.interface + "\0").encode("utf-8"))
2604
except socket.error as error:
2605
if error.errno == errno.EPERM:
2606
logger.error("No permission to bind to"
2607
" interface %s", self.interface)
2608
elif error.errno == errno.ENOPROTOOPT:
2609
logger.error("SO_BINDTODEVICE not available;"
2610
" cannot bind to interface %s",
2611
self.interface)
2612
elif error.errno == errno.ENODEV:
2613
logger.error("Interface %s does not exist,"
2614
" cannot bind", self.interface)
2615
else:
2616
raise
1778
2617
# Only bind(2) the socket if we really need to.
1779
2618
if self.server_address[0] or self.server_address[1]:
1780
2619
if not self.server_address[0]:
1781
2620
if self.address_family == socket.AF_INET6:
1782
any_address = "::" # in6addr_any
2621
any_address = "::" # in6addr_any
1783
2622
else:
1784
any_address = socket.INADDR_ANY
2623
any_address = "0.0.0.0" # INADDR_ANY
1785
2624
self.server_address = (any_address,
1786
2625
self.server_address[1])
1787
2626
elif not self.server_address[1]:
1788
self.server_address = (self.server_address[0],
1789
0)
2627
self.server_address = (self.server_address[0], 0)
1790
2628
# if self.interface:
1791
2629
# self.server_address = (self.server_address[0],
1792
2630
# 0, # port
1798
2636
1799
2637
class MandosServer(IPv6_TCPServer):
1800
2638
"""Mandos server.
1801
2639
1802
2640
Attributes:
1803
2641
clients: set of Client objects
1804
2642
gnutls_priority GnuTLS priority string
1805
2643
use_dbus: Boolean; to emit D-Bus signals or not
1806
1807
Assumes a gobject.MainLoop event loop.
2644
2645
Assumes a GLib.MainLoop event loop.
1808
2646
"""
2647
1809
2648
def __init__(self, server_address, RequestHandlerClass,
1810
interface=None, use_ipv6=True, clients=None,
1811
gnutls_priority=None, use_dbus=True):
2649
interface=None,
2650
use_ipv6=True,
2651
clients=None,
2652
gnutls_priority=None,
2653
use_dbus=True,
2654
socketfd=None):
1812
2655
self.enabled = False
1813
2656
self.clients = clients
1814
2657
if self.clients is None:
1817
2660
self.gnutls_priority = gnutls_priority
1818
2661
IPv6_TCPServer.__init__(self, server_address,
1819
2662
RequestHandlerClass,
1820
interface = interface,
1821
use_ipv6 = use_ipv6)
2663
interface=interface,
2664
use_ipv6=use_ipv6,
2665
socketfd=socketfd)
2666
1822
2667
def server_activate(self):
1823
2668
if self.enabled:
1824
2669
return socketserver.TCPServer.server_activate(self)
1825
2670
1826
2671
def enable(self):
1827
2672
self.enabled = True
1828
2673
1829
2674
def add_pipe(self, parent_pipe, proc):
1830
2675
# Call "handle_ipc" for both data and EOF events
1831
gobject.io_add_watch(parent_pipe.fileno(),
1832
gobject.IO_IN | gobject.IO_HUP,
1833
functools.partial(self.handle_ipc,
1834
parent_pipe =
1835
parent_pipe,
1836
proc = proc))
1837
1838
def handle_ipc(self, source, condition, parent_pipe=None,
1839
proc = None, client_object=None):
1840
condition_names = {
1841
gobject.IO_IN: "IN", # There is data to read.
1842
gobject.IO_OUT: "OUT", # Data can be written (without
1843
# blocking).
1844
gobject.IO_PRI: "PRI", # There is urgent data to read.
1845
gobject.IO_ERR: "ERR", # Error condition.
1846
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1847
# broken, usually for pipes and
1848
# sockets).
1849
}
1850
conditions_string = ' | '.join(name
1851
for cond, name in
1852
condition_names.iteritems()
1853
if cond & condition)
2676
GLib.io_add_watch(
2677
parent_pipe.fileno(),
2678
GLib.IO_IN | GLib.IO_HUP,
2679
functools.partial(self.handle_ipc,
2680
parent_pipe=parent_pipe,
2681
proc=proc))
2682
2683
def handle_ipc(self, source, condition,
2684
parent_pipe=None,
2685
proc=None,
2686
client_object=None):
1854
2687
# error, or the other end of multiprocessing.Pipe has closed
1855
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2688
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1856
2689
# Wait for other process to exit
1857
2690
proc.join()
1858
2691
return False
1859
2692
1860
2693
# Read a request from the child
1861
2694
request = parent_pipe.recv()
1862
2695
command = request[0]
1863
2696
1864
2697
if command == 'init':
1865
fpr = request[1]
1866
address = request[2]
1867
1868
for c in self.clients.itervalues():
1869
if c.fingerprint == fpr:
2698
key_id = request[1].decode("ascii")
2699
fpr = request[2].decode("ascii")
2700
address = request[3]
2701
2702
for c in self.clients.values():
2703
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2704
continue
2705
if key_id and c.key_id == key_id:
2706
client = c
2707
break
2708
if fpr and c.fingerprint == fpr:
1870
2709
client = c
1871
2710
break
1872
2711
else:
1873
logger.info("Client not found for fingerprint: %s, ad"
1874
"dress: %s", fpr, address)
2712
logger.info("Client not found for key ID: %s, address"
2713
": %s", key_id or fpr, address)
1875
2714
if self.use_dbus:
1876
2715
# Emit D-Bus signal
1877
mandos_dbus_service.ClientNotFound(fpr,
2716
mandos_dbus_service.ClientNotFound(key_id or fpr,
1878
2717
address[0])
1879
2718
parent_pipe.send(False)
1880
2719
return False
1881
1882
gobject.io_add_watch(parent_pipe.fileno(),
1883
gobject.IO_IN | gobject.IO_HUP,
1884
functools.partial(self.handle_ipc,
1885
parent_pipe =
1886
parent_pipe,
1887
proc = proc,
1888
client_object =
1889
client))
2720
2721
GLib.io_add_watch(
2722
parent_pipe.fileno(),
2723
GLib.IO_IN | GLib.IO_HUP,
2724
functools.partial(self.handle_ipc,
2725
parent_pipe=parent_pipe,
2726
proc=proc,
2727
client_object=client))
1890
2728
parent_pipe.send(True)
1891
2729
# remove the old hook in favor of the new above hook on
1892
2730
# same fileno
1895
2733
funcname = request[1]
1896
2734
args = request[2]
1897
2735
kwargs = request[3]
1898
2736
1899
2737
parent_pipe.send(('data', getattr(client_object,
1900
2738
funcname)(*args,
1901
**kwargs)))
1902
2739
**kwargs)))
2740
1903
2741
if command == 'getattr':
1904
2742
attrname = request[1]
1905
if callable(client_object.__getattribute__(attrname)):
1906
parent_pipe.send(('function',))
2743
if isinstance(client_object.__getattribute__(attrname),
2744
collections.Callable):
2745
parent_pipe.send(('function', ))
1907
2746
else:
1908
parent_pipe.send(('data', client_object
1909
.__getattribute__(attrname)))
1910
2747
parent_pipe.send((
2748
'data', client_object.__getattribute__(attrname)))
2749
1911
2750
if command == 'setattr':
1912
2751
attrname = request[1]
1913
2752
value = request[2]
1914
2753
setattr(client_object, attrname, value)
1915
2754
1916
2755
return True
1917
2756
1918
2757
2758
def rfc3339_duration_to_delta(duration):
2759
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2760
2761
>>> rfc3339_duration_to_delta("P7D")
2762
datetime.timedelta(7)
2763
>>> rfc3339_duration_to_delta("PT60S")
2764
datetime.timedelta(0, 60)
2765
>>> rfc3339_duration_to_delta("PT60M")
2766
datetime.timedelta(0, 3600)
2767
>>> rfc3339_duration_to_delta("PT24H")
2768
datetime.timedelta(1)
2769
>>> rfc3339_duration_to_delta("P1W")
2770
datetime.timedelta(7)
2771
>>> rfc3339_duration_to_delta("PT5M30S")
2772
datetime.timedelta(0, 330)
2773
>>> rfc3339_duration_to_delta("P1DT3M20S")
2774
datetime.timedelta(1, 200)
2775
"""
2776
2777
# Parsing an RFC 3339 duration with regular expressions is not
2778
# possible - there would have to be multiple places for the same
2779
# values, like seconds. The current code, while more esoteric, is
2780
# cleaner without depending on a parsing library. If Python had a
2781
# built-in library for parsing we would use it, but we'd like to
2782
# avoid excessive use of external libraries.
2783
2784
# New type for defining tokens, syntax, and semantics all-in-one
2785
Token = collections.namedtuple("Token", (
2786
"regexp", # To match token; if "value" is not None, must have
2787
# a "group" containing digits
2788
"value", # datetime.timedelta or None
2789
"followers")) # Tokens valid after this token
2790
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2791
# the "duration" ABNF definition in RFC 3339, Appendix A.
2792
token_end = Token(re.compile(r"$"), None, frozenset())
2793
token_second = Token(re.compile(r"(\d+)S"),
2794
datetime.timedelta(seconds=1),
2795
frozenset((token_end, )))
2796
token_minute = Token(re.compile(r"(\d+)M"),
2797
datetime.timedelta(minutes=1),
2798
frozenset((token_second, token_end)))
2799
token_hour = Token(re.compile(r"(\d+)H"),
2800
datetime.timedelta(hours=1),
2801
frozenset((token_minute, token_end)))
2802
token_time = Token(re.compile(r"T"),
2803
None,
2804
frozenset((token_hour, token_minute,
2805
token_second)))
2806
token_day = Token(re.compile(r"(\d+)D"),
2807
datetime.timedelta(days=1),
2808
frozenset((token_time, token_end)))
2809
token_month = Token(re.compile(r"(\d+)M"),
2810
datetime.timedelta(weeks=4),
2811
frozenset((token_day, token_end)))
2812
token_year = Token(re.compile(r"(\d+)Y"),
2813
datetime.timedelta(weeks=52),
2814
frozenset((token_month, token_end)))
2815
token_week = Token(re.compile(r"(\d+)W"),
2816
datetime.timedelta(weeks=1),
2817
frozenset((token_end, )))
2818
token_duration = Token(re.compile(r"P"), None,
2819
frozenset((token_year, token_month,
2820
token_day, token_time,
2821
token_week)))
2822
# Define starting values:
2823
# Value so far
2824
value = datetime.timedelta()
2825
found_token = None
2826
# Following valid tokens
2827
followers = frozenset((token_duration, ))
2828
# String left to parse
2829
s = duration
2830
# Loop until end token is found
2831
while found_token is not token_end:
2832
# Search for any currently valid tokens
2833
for token in followers:
2834
match = token.regexp.match(s)
2835
if match is not None:
2836
# Token found
2837
if token.value is not None:
2838
# Value found, parse digits
2839
factor = int(match.group(1), 10)
2840
# Add to value so far
2841
value += factor * token.value
2842
# Strip token from string
2843
s = token.regexp.sub("", s, 1)
2844
# Go to found token
2845
found_token = token
2846
# Set valid next tokens
2847
followers = found_token.followers
2848
break
2849
else:
2850
# No currently valid tokens were found
2851
raise ValueError("Invalid RFC 3339 duration: {!r}"
2852
.format(duration))
2853
# End token found
2854
return value
2855
2856
1919
2857
def string_to_delta(interval):
1920
2858
"""Parse a string and return a datetime.timedelta
1921
2859
1922
2860
>>> string_to_delta('7d')
1923
2861
datetime.timedelta(7)
1924
2862
>>> string_to_delta('60s')
1932
2870
>>> string_to_delta('5m 30s')
1933
2871
datetime.timedelta(0, 330)
1934
2872
"""
2873
2874
try:
2875
return rfc3339_duration_to_delta(interval)
2876
except ValueError:
2877
pass
2878
1935
2879
timevalue = datetime.timedelta(0)
1936
2880
for s in interval.split():
1937
2881
try:
1938
suffix = unicode(s[-1])
2882
suffix = s[-1]
1939
2883
value = int(s[:-1])
1940
2884
if suffix == "d":
1941
2885
delta = datetime.timedelta(value)
1948
2892
elif suffix == "w":
1949
2893
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1950
2894
else:
1951
raise ValueError("Unknown suffix %r" % suffix)
1952
except (ValueError, IndexError) as e:
2895
raise ValueError("Unknown suffix {!r}".format(suffix))
2896
except IndexError as e:
1953
2897
raise ValueError(*(e.args))
1954
2898
timevalue += delta
1955
2899
return timevalue
1956
2900
1957
2901
1958
def daemon(nochdir = False, noclose = False):
2902
def daemon(nochdir=False, noclose=False):
1959
2903
"""See daemon(3). Standard BSD Unix function.
1960
2904
1961
2905
This should really exist as os.daemon, but it doesn't (yet)."""
1962
2906
if os.fork():
1963
2907
sys.exit()
1968
2912
sys.exit()
1969
2913
if not noclose:
1970
2914
# Close all standard open file descriptors
1971
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2915
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1972
2916
if not stat.S_ISCHR(os.fstat(null).st_mode):
1973
2917
raise OSError(errno.ENODEV,
1974
"%s not a character device"
1975
% os.path.devnull)
2918
"{} not a character device"
2919
.format(os.devnull))
1976
2920
os.dup2(null, sys.stdin.fileno())
1977
2921
os.dup2(null, sys.stdout.fileno())
1978
2922
os.dup2(null, sys.stderr.fileno())
1981
2925
1982
2926
1983
2927
def main():
1984
2928
1985
2929
##################################################################
1986
2930
# Parsing of options, both command line and config file
1987
2931
1988
2932
parser = argparse.ArgumentParser()
1989
2933
parser.add_argument("-v", "--version", action="version",
1990
version = "%%(prog)s %s" % version,
2934
version="%(prog)s {}".format(version),
1991
2935
help="show version number and exit")
1992
2936
parser.add_argument("-i", "--interface", metavar="IF",
1993
2937
help="Bind to interface IF")
1999
2943
help="Run self-test")
2000
2944
parser.add_argument("--debug", action="store_true",
2001
2945
help="Debug mode; run in foreground and log"
2002
" to terminal")
2946
" to terminal", default=None)
2003
2947
parser.add_argument("--debuglevel", metavar="LEVEL",
2004
2948
help="Debug level for stdout output")
2005
2949
parser.add_argument("--priority", help="GnuTLS"
2012
2956
" files")
2013
2957
parser.add_argument("--no-dbus", action="store_false",
2014
2958
dest="use_dbus", help="Do not provide D-Bus"
2015
" system bus interface")
2959
" system bus interface", default=None)
2016
2960
parser.add_argument("--no-ipv6", action="store_false",
2017
dest="use_ipv6", help="Do not use IPv6")
2961
dest="use_ipv6", help="Do not use IPv6",
2962
default=None)
2018
2963
parser.add_argument("--no-restore", action="store_false",
2019
2964
dest="restore", help="Do not restore stored"
2020
" state")
2965
" state", default=None)
2966
parser.add_argument("--socket", type=int,
2967
help="Specify a file descriptor to a network"
2968
" socket to use instead of creating one")
2021
2969
parser.add_argument("--statedir", metavar="DIR",
2022
2970
help="Directory to save/restore state in")
2023
2971
parser.add_argument("--foreground", action="store_true",
2972
help="Run in foreground", default=None)
2973
parser.add_argument("--no-zeroconf", action="store_false",
2974
dest="zeroconf", help="Do not use Zeroconf",
2975
default=None)
2976
2024
2977
options = parser.parse_args()
2025
2978
2026
2979
if options.check:
2027
2980
import doctest
2028
doctest.testmod()
2029
sys.exit()
2030
2981
fail_count, test_count = doctest.testmod()
2982
sys.exit(os.EX_OK if fail_count == 0 else 1)
2983
2031
2984
# Default values for config file for server-global settings
2032
server_defaults = { "interface": "",
2033
"address": "",
2034
"port": "",
2035
"debug": "False",
2036
"priority":
2037
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2038
"servicename": "Mandos",
2039
"use_dbus": "True",
2040
"use_ipv6": "True",
2041
"debuglevel": "",
2042
"restore": "True",
2043
"statedir": "/var/lib/mandos"
2044
}
2045
2985
if gnutls.has_rawpk:
2986
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2987
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2988
else:
2989
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2990
":+SIGN-DSA-SHA256")
2991
server_defaults = {"interface": "",
2992
"address": "",
2993
"port": "",
2994
"debug": "False",
2995
"priority": priority,
2996
"servicename": "Mandos",
2997
"use_dbus": "True",
2998
"use_ipv6": "True",
2999
"debuglevel": "",
3000
"restore": "True",
3001
"socket": "",
3002
"statedir": "/var/lib/mandos",
3003
"foreground": "False",
3004
"zeroconf": "True",
3005
}
3006
del priority
3007
2046
3008
# Parse config file for server-global settings
2047
3009
server_config = configparser.SafeConfigParser(server_defaults)
2048
3010
del server_defaults
2049
server_config.read(os.path.join(options.configdir,
2050
"mandos.conf"))
3011
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2051
3012
# Convert the SafeConfigParser object to a dict
2052
3013
server_settings = server_config.defaults()
2053
3014
# Use the appropriate methods on the non-string config options
2054
for option in ("debug", "use_dbus", "use_ipv6"):
3015
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3016
"foreground", "zeroconf"):
2055
3017
server_settings[option] = server_config.getboolean("DEFAULT",
2056
3018
option)
2057
3019
if server_settings["port"]:
2058
3020
server_settings["port"] = server_config.getint("DEFAULT",
2059
3021
"port")
3022
if server_settings["socket"]:
3023
server_settings["socket"] = server_config.getint("DEFAULT",
3024
"socket")
3025
# Later, stdin will, and stdout and stderr might, be dup'ed
3026
# over with an opened os.devnull. But we don't want this to
3027
# happen with a supplied network socket.
3028
if 0 <= server_settings["socket"] <= 2:
3029
server_settings["socket"] = os.dup(server_settings
3030
["socket"])
2060
3031
del server_config
2061
3032
2062
3033
# Override the settings from the config file with command line
2063
3034
# options, if set.
2064
3035
for option in ("interface", "address", "port", "debug",
2065
"priority", "servicename", "configdir",
2066
"use_dbus", "use_ipv6", "debuglevel", "restore",
2067
"statedir"):
3036
"priority", "servicename", "configdir", "use_dbus",
3037
"use_ipv6", "debuglevel", "restore", "statedir",
3038
"socket", "foreground", "zeroconf"):
2068
3039
value = getattr(options, option)
2069
3040
if value is not None:
2070
3041
server_settings[option] = value
2071
3042
del options
2072
3043
# Force all strings to be unicode
2073
3044
for option in server_settings.keys():
2074
if type(server_settings[option]) is str:
2075
server_settings[option] = unicode(server_settings[option])
3045
if isinstance(server_settings[option], bytes):
3046
server_settings[option] = (server_settings[option]
3047
.decode("utf-8"))
3048
# Force all boolean options to be boolean
3049
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3050
"foreground", "zeroconf"):
3051
server_settings[option] = bool(server_settings[option])
3052
# Debug implies foreground
3053
if server_settings["debug"]:
3054
server_settings["foreground"] = True
2076
3055
# Now we have our good server settings in "server_settings"
2077
3056
2078
3057
##################################################################
2079
3058
3059
if (not server_settings["zeroconf"]
3060
and not (server_settings["port"]
3061
or server_settings["socket"] != "")):
3062
parser.error("Needs port or socket to work without Zeroconf")
3063
2080
3064
# For convenience
2081
3065
debug = server_settings["debug"]
2082
3066
debuglevel = server_settings["debuglevel"]
2084
3068
use_ipv6 = server_settings["use_ipv6"]
2085
3069
stored_state_path = os.path.join(server_settings["statedir"],
2086
3070
stored_state_file)
2087
3071
foreground = server_settings["foreground"]
3072
zeroconf = server_settings["zeroconf"]
3073
2088
3074
if debug:
2089
initlogger(logging.DEBUG)
3075
initlogger(debug, logging.DEBUG)
2090
3076
else:
2091
3077
if not debuglevel:
2092
initlogger()
3078
initlogger(debug)
2093
3079
else:
2094
3080
level = getattr(logging, debuglevel.upper())
2095
initlogger(level)
2096
3081
initlogger(debug, level)
3082
2097
3083
if server_settings["servicename"] != "Mandos":
2098
syslogger.setFormatter(logging.Formatter
2099
('Mandos (%s) [%%(process)d]:'
2100
' %%(levelname)s: %%(message)s'
2101
% server_settings["servicename"]))
2102
3084
syslogger.setFormatter(
3085
logging.Formatter('Mandos ({}) [%(process)d]:'
3086
' %(levelname)s: %(message)s'.format(
3087
server_settings["servicename"])))
3088
2103
3089
# Parse config file with clients
2104
client_config = configparser.SafeConfigParser(Client.client_defaults)
3090
client_config = configparser.SafeConfigParser(Client
3091
.client_defaults)
2105
3092
client_config.read(os.path.join(server_settings["configdir"],
2106
3093
"clients.conf"))
2107
3094
2108
3095
global mandos_dbus_service
2109
3096
mandos_dbus_service = None
2110
2111
tcp_server = MandosServer((server_settings["address"],
2112
server_settings["port"]),
2113
ClientHandler,
2114
interface=(server_settings["interface"]
2115
or None),
2116
use_ipv6=use_ipv6,
2117
gnutls_priority=
2118
server_settings["priority"],
2119
use_dbus=use_dbus)
2120
if not debug:
2121
pidfilename = "/var/run/mandos.pid"
2122
try:
2123
pidfile = open(pidfilename, "w")
2124
except IOError:
2125
logger.error("Could not open file %r", pidfilename)
2126
2127
try:
2128
uid = pwd.getpwnam("_mandos").pw_uid
2129
gid = pwd.getpwnam("_mandos").pw_gid
2130
except KeyError:
2131
try:
2132
uid = pwd.getpwnam("mandos").pw_uid
2133
gid = pwd.getpwnam("mandos").pw_gid
3097
3098
socketfd = None
3099
if server_settings["socket"] != "":
3100
socketfd = server_settings["socket"]
3101
tcp_server = MandosServer(
3102
(server_settings["address"], server_settings["port"]),
3103
ClientHandler,
3104
interface=(server_settings["interface"] or None),
3105
use_ipv6=use_ipv6,
3106
gnutls_priority=server_settings["priority"],
3107
use_dbus=use_dbus,
3108
socketfd=socketfd)
3109
if not foreground:
3110
pidfilename = "/run/mandos.pid"
3111
if not os.path.isdir("/run/."):
3112
pidfilename = "/var/run/mandos.pid"
3113
pidfile = None
3114
try:
3115
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3116
except IOError as e:
3117
logger.error("Could not open file %r", pidfilename,
3118
exc_info=e)
3119
3120
for name, group in (("_mandos", "_mandos"),
3121
("mandos", "mandos"),
3122
("nobody", "nogroup")):
3123
try:
3124
uid = pwd.getpwnam(name).pw_uid
3125
gid = pwd.getpwnam(group).pw_gid
3126
break
2134
3127
except KeyError:
2135
try:
2136
uid = pwd.getpwnam("nobody").pw_uid
2137
gid = pwd.getpwnam("nobody").pw_gid
2138
except KeyError:
2139
uid = 65534
2140
gid = 65534
3128
continue
3129
else:
3130
uid = 65534
3131
gid = 65534
2141
3132
try:
2142
3133
os.setgid(gid)
2143
3134
os.setuid(uid)
3135
if debug:
3136
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3137
gid))
2144
3138
except OSError as error:
2145
if error[0] != errno.EPERM:
2146
raise error
2147
3139
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3140
.format(uid, gid, os.strerror(error.errno)))
3141
if error.errno != errno.EPERM:
3142
raise
3143
2148
3144
if debug:
2149
3145
# Enable all possible GnuTLS debugging
2150
3146
2151
3147
# "Use a log level over 10 to enable all debugging options."
2152
3148
# - GnuTLS manual
2153
gnutls.library.functions.gnutls_global_set_log_level(11)
2154
2155
@gnutls.library.types.gnutls_log_func
3149
gnutls.global_set_log_level(11)
3150
3151
@gnutls.log_func
2156
3152
def debug_gnutls(level, string):
2157
3153
logger.debug("GnuTLS: %s", string[:-1])
2158
2159
(gnutls.library.functions
2160
.gnutls_global_set_log_function(debug_gnutls))
2161
3154
3155
gnutls.global_set_log_function(debug_gnutls)
3156
2162
3157
# Redirect stdin so all checkers get /dev/null
2163
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3158
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2164
3159
os.dup2(null, sys.stdin.fileno())
2165
3160
if null > 2:
2166
3161
os.close(null)
2167
else:
2168
# No console logging
2169
logger.removeHandler(console)
2170
3162
2171
3163
# Need to fork before connecting to D-Bus
2172
if not debug:
3164
if not foreground:
2173
3165
# Close all input and output, do double fork, etc.
2174
3166
daemon()
2175
3167
3168
# multiprocessing will use threads, so before we use GLib we need
3169
# to inform GLib that threads will be used.
3170
GLib.threads_init()
3171
2176
3172
global main_loop
2177
3173
# From the Avahi example code
2178
DBusGMainLoop(set_as_default=True )
2179
main_loop = gobject.MainLoop()
3174
DBusGMainLoop(set_as_default=True)
3175
main_loop = GLib.MainLoop()
2180
3176
bus = dbus.SystemBus()
2181
3177
# End of Avahi example code
2182
3178
if use_dbus:
2183
3179
try:
2184
3180
bus_name = dbus.service.BusName("se.recompile.Mandos",
2185
bus, do_not_queue=True)
2186
old_bus_name = (dbus.service.BusName
2187
("se.bsnet.fukt.Mandos", bus,
2188
do_not_queue=True))
2189
except dbus.exceptions.NameExistsException as e:
2190
logger.error(unicode(e) + ", disabling D-Bus")
3181
bus,
3182
do_not_queue=True)
3183
old_bus_name = dbus.service.BusName(
3184
"se.bsnet.fukt.Mandos", bus,
3185
do_not_queue=True)
3186
except dbus.exceptions.DBusException as e:
3187
logger.error("Disabling D-Bus:", exc_info=e)
2191
3188
use_dbus = False
2192
3189
server_settings["use_dbus"] = False
2193
3190
tcp_server.use_dbus = False
2194
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2195
service = AvahiServiceToSyslog(name =
2196
server_settings["servicename"],
2197
servicetype = "_mandos._tcp",
2198
protocol = protocol, bus = bus)
2199
if server_settings["interface"]:
2200
service.interface = (if_nametoindex
2201
(str(server_settings["interface"])))
2202
3191
if zeroconf:
3192
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3193
service = AvahiServiceToSyslog(
3194
name=server_settings["servicename"],
3195
servicetype="_mandos._tcp",
3196
protocol=protocol,
3197
bus=bus)
3198
if server_settings["interface"]:
3199
service.interface = if_nametoindex(
3200
server_settings["interface"].encode("utf-8"))
3201
2203
3202
global multiprocessing_manager
2204
3203
multiprocessing_manager = multiprocessing.Manager()
2205
3204
2206
3205
client_class = Client
2207
3206
if use_dbus:
2208
client_class = functools.partial(ClientDBusTransitional,
2209
bus = bus)
2210
3207
client_class = functools.partial(ClientDBus, bus=bus)
3208
2211
3209
client_settings = Client.config_parser(client_config)
2212
3210
old_client_settings = {}
2213
clients_data = []
2214
3211
clients_data = {}
3212
3213
# This is used to redirect stdout and stderr for checker processes
3214
global wnull
3215
wnull = open(os.devnull, "w") # A writable /dev/null
3216
# Only used if server is running in foreground but not in debug
3217
# mode
3218
if debug or not foreground:
3219
wnull.close()
3220
2215
3221
# Get client data and settings from last running state.
2216
3222
if server_settings["restore"]:
2217
3223
try:
2218
3224
with open(stored_state_path, "rb") as stored_state:
2219
clients_data, old_client_settings = (pickle.load
2220
(stored_state))
3225
if sys.version_info.major == 2:
3226
clients_data, old_client_settings = pickle.load(
3227
stored_state)
3228
else:
3229
bytes_clients_data, bytes_old_client_settings = (
3230
pickle.load(stored_state, encoding="bytes"))
3231
# Fix bytes to strings
3232
# clients_data
3233
# .keys()
3234
clients_data = {(key.decode("utf-8")
3235
if isinstance(key, bytes)
3236
else key): value
3237
for key, value in
3238
bytes_clients_data.items()}
3239
del bytes_clients_data
3240
for key in clients_data:
3241
value = {(k.decode("utf-8")
3242
if isinstance(k, bytes) else k): v
3243
for k, v in
3244
clients_data[key].items()}
3245
clients_data[key] = value
3246
# .client_structure
3247
value["client_structure"] = [
3248
(s.decode("utf-8")
3249
if isinstance(s, bytes)
3250
else s) for s in
3251
value["client_structure"]]
3252
# .name & .host
3253
for k in ("name", "host"):
3254
if isinstance(value[k], bytes):
3255
value[k] = value[k].decode("utf-8")
3256
if not value.has_key("key_id"):
3257
value["key_id"] = ""
3258
elif not value.has_key("fingerprint"):
3259
value["fingerprint"] = ""
3260
# old_client_settings
3261
# .keys()
3262
old_client_settings = {
3263
(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_old_client_settings.items()}
3268
del bytes_old_client_settings
3269
# .host
3270
for value in old_client_settings.values():
3271
if isinstance(value["host"], bytes):
3272
value["host"] = (value["host"]
3273
.decode("utf-8"))
2221
3274
os.remove(stored_state_path)
2222
3275
except IOError as e:
2223
logger.warning("Could not load persistent state: {0}"
2224
.format(e))
2225
if e.errno != errno.ENOENT:
3276
if e.errno == errno.ENOENT:
3277
logger.warning("Could not load persistent state:"
3278
" {}".format(os.strerror(e.errno)))
3279
else:
3280
logger.critical("Could not load persistent state:",
3281
exc_info=e)
2226
3282
raise
2227
3283
except EOFError as e:
3284
logger.warning("Could not load persistent state: "
3285
"EOFError:",
3286
exc_info=e)
3287
2228
3288
with PGPEngine() as pgp:
2229
for client in clients_data:
2230
client_name = client["name"]
2231
3289
for client_name, client in clients_data.items():
3290
# Skip removed clients
3291
if client_name not in client_settings:
3292
continue
3293
2232
3294
# Decide which value to use after restoring saved state.
2233
3295
# We have three different values: Old config file,
2234
3296
# new config file, and saved state.
2239
3301
# For each value in new config, check if it
2240
3302
# differs from the old config value (Except for
2241
3303
# the "secret" attribute)
2242
if (name != "secret" and
2243
value != old_client_settings[client_name]
2244
[name]):
3304
if (name != "secret"
3305
and (value !=
3306
old_client_settings[client_name][name])):
2245
3307
client[name] = value
2246
3308
except KeyError:
2247
3309
pass
2248
3310
2249
3311
# Clients who has passed its expire date can still be
2250
# enabled if its last checker was successful. Clients
2251
# whose checker failed before we stored its state is
2252
# assumed to have failed all checkers during downtime.
3312
# enabled if its last checker was successful. A Client
3313
# whose checker succeeded before we stored its state is
3314
# assumed to have successfully run all checkers during
3315
# downtime.
2253
3316
if client["enabled"]:
2254
3317
if datetime.datetime.utcnow() >= client["expires"]:
2255
3318
if not client["last_checked_ok"]:
2256
3319
logger.warning(
2257
"disabling client {0} - Client never "
2258
"performed a successfull checker"
2259
.format(client["name"]))
3320
"disabling client {} - Client never "
3321
"performed a successful checker".format(
3322
client_name))
2260
3323
client["enabled"] = False
2261
3324
elif client["last_checker_status"] != 0:
2262
3325
logger.warning(
2263
"disabling client {0} - Client "
2264
"last checker failed with error code {1}"
2265
.format(client["name"],
2266
client["last_checker_status"]))
3326
"disabling client {} - Client last"
3327
" checker failed with error code"
3328
" {}".format(
3329
client_name,
3330
client["last_checker_status"]))
2267
3331
client["enabled"] = False
2268
3332
else:
2269
client["expires"] = (datetime.datetime
2270
.utcnow()
2271
+ client["timeout"])
2272
2273
client["changedstate"] = (multiprocessing_manager
2274
.Condition
2275
(multiprocessing_manager
2276
.Lock()))
2277
client["checker"] = None
2278
if use_dbus:
2279
new_client = (ClientDBusTransitional.__new__
2280
(ClientDBusTransitional))
2281
tcp_server.clients[client_name] = new_client
2282
new_client.bus = bus
2283
for name, value in client.iteritems():
2284
setattr(new_client, name, value)
2285
client_object_name = unicode(client_name).translate(
2286
{ord("."): ord("_"),
2287
ord("-"): ord("_")})
2288
new_client.dbus_object_path = (dbus.ObjectPath
2289
("/clients/"
2290
+ client_object_name))
2291
DBusObjectWithProperties.__init__(new_client,
2292
new_client.bus,
2293
new_client
2294
.dbus_object_path)
2295
else:
2296
tcp_server.clients[client_name] = (Client.__new__
2297
(Client))
2298
for name, value in client.iteritems():
2299
setattr(tcp_server.clients[client_name],
2300
name, value)
2301
3333
client["expires"] = (
3334
datetime.datetime.utcnow()
3335
+ client["timeout"])
3336
logger.debug("Last checker succeeded,"
3337
" keeping {} enabled".format(
3338
client_name))
2302
3339
try:
2303
tcp_server.clients[client_name].secret = (
2304
pgp.decrypt(tcp_server.clients[client_name]
2305
.encrypted_secret,
2306
client_settings[client_name]
2307
["secret"]))
3340
client["secret"] = pgp.decrypt(
3341
client["encrypted_secret"],
3342
client_settings[client_name]["secret"])
2308
3343
except PGPError:
2309
3344
# If decryption fails, we use secret from new settings
2310
logger.debug("Failed to decrypt {0} old secret"
2311
.format(client_name))
2312
tcp_server.clients[client_name].secret = (
2313
client_settings[client_name]["secret"])
2314
2315
# Create/remove clients based on new changes made to config
2316
for clientname in set(old_client_settings) - set(client_settings):
2317
del tcp_server.clients[clientname]
2318
for clientname in set(client_settings) - set(old_client_settings):
2319
tcp_server.clients[clientname] = (client_class(name = clientname,
2320
config =
2321
client_settings
2322
[clientname]))
2323
3345
logger.debug("Failed to decrypt {} old secret".format(
3346
client_name))
3347
client["secret"] = (client_settings[client_name]
3348
["secret"])
3349
3350
# Add/remove clients based on new changes made to config
3351
for client_name in (set(old_client_settings)
3352
- set(client_settings)):
3353
del clients_data[client_name]
3354
for client_name in (set(client_settings)
3355
- set(old_client_settings)):
3356
clients_data[client_name] = client_settings[client_name]
3357
3358
# Create all client objects
3359
for client_name, client in clients_data.items():
3360
tcp_server.clients[client_name] = client_class(
3361
name=client_name,
3362
settings=client,
3363
server_settings=server_settings)
3364
2324
3365
if not tcp_server.clients:
2325
3366
logger.warning("No clients defined")
2326
2327
if not debug:
2328
try:
2329
with pidfile:
2330
pid = os.getpid()
2331
pidfile.write(str(pid) + "\n".encode("utf-8"))
2332
del pidfile
2333
except IOError:
2334
logger.error("Could not write to file %r with PID %d",
2335
pidfilename, pid)
2336
except NameError:
2337
# "pidfile" was never created
2338
pass
3367
3368
if not foreground:
3369
if pidfile is not None:
3370
pid = os.getpid()
3371
try:
3372
with pidfile:
3373
print(pid, file=pidfile)
3374
except IOError:
3375
logger.error("Could not write to file %r with PID %d",
3376
pidfilename, pid)
3377
del pidfile
2339
3378
del pidfilename
2340
signal.signal(signal.SIGINT, signal.SIG_IGN)
2341
2342
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2343
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2344
3379
3380
for termsig in (signal.SIGHUP, signal.SIGTERM):
3381
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3382
lambda: main_loop.quit() and False)
3383
2345
3384
if use_dbus:
2346
class MandosDBusService(dbus.service.Object):
3385
3386
@alternate_dbus_interfaces(
3387
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3388
class MandosDBusService(DBusObjectWithObjectManager):
2347
3389
"""A D-Bus proxy object"""
3390
2348
3391
def __init__(self):
2349
3392
dbus.service.Object.__init__(self, bus, "/")
3393
2350
3394
_interface = "se.recompile.Mandos"
2351
3395
2352
3396
@dbus.service.signal(_interface, signature="o")
2353
3397
def ClientAdded(self, objpath):
2354
3398
"D-Bus signal"
2355
3399
pass
2356
3400
2357
3401
@dbus.service.signal(_interface, signature="ss")
2358
def ClientNotFound(self, fingerprint, address):
3402
def ClientNotFound(self, key_id, address):
2359
3403
"D-Bus signal"
2360
3404
pass
2361
3405
3406
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3407
"true"})
2362
3408
@dbus.service.signal(_interface, signature="os")
2363
3409
def ClientRemoved(self, objpath, name):
2364
3410
"D-Bus signal"
2365
3411
pass
2366
3412
3413
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3414
"true"})
2367
3415
@dbus.service.method(_interface, out_signature="ao")
2368
3416
def GetAllClients(self):
2369
3417
"D-Bus method"
2370
return dbus.Array(c.dbus_object_path
2371
for c in
2372
tcp_server.clients.itervalues())
2373
3418
return dbus.Array(c.dbus_object_path for c in
3419
tcp_server.clients.values())
3420
3421
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3422
"true"})
2374
3423
@dbus.service.method(_interface,
2375
3424
out_signature="a{oa{sv}}")
2376
3425
def GetAllClientsWithProperties(self):
2377
3426
"D-Bus method"
2378
3427
return dbus.Dictionary(
2379
((c.dbus_object_path, c.GetAll(""))
2380
for c in tcp_server.clients.itervalues()),
3428
{c.dbus_object_path: c.GetAll(
3429
"se.recompile.Mandos.Client")
3430
for c in tcp_server.clients.values()},
2381
3431
signature="oa{sv}")
2382
3432
2383
3433
@dbus.service.method(_interface, in_signature="o")
2384
3434
def RemoveClient(self, object_path):
2385
3435
"D-Bus method"
2386
for c in tcp_server.clients.itervalues():
3436
for c in tcp_server.clients.values():
2387
3437
if c.dbus_object_path == object_path:
2388
3438
del tcp_server.clients[c.name]
2389
3439
c.remove_from_connection()
2390
# Don't signal anything except ClientRemoved
3440
# Don't signal the disabling
2391
3441
c.disable(quiet=True)
2392
# Emit D-Bus signal
2393
self.ClientRemoved(object_path, c.name)
3442
# Emit D-Bus signal for removal
3443
self.client_removed_signal(c)
2394
3444
return
2395
3445
raise KeyError(object_path)
2396
3446
2397
3447
del _interface
2398
2399
class MandosDBusServiceTransitional(MandosDBusService):
2400
__metaclass__ = AlternateDBusNamesMetaclass
2401
mandos_dbus_service = MandosDBusServiceTransitional()
2402
3448
3449
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3450
out_signature="a{oa{sa{sv}}}")
3451
def GetManagedObjects(self):
3452
"""D-Bus method"""
3453
return dbus.Dictionary(
3454
{client.dbus_object_path:
3455
dbus.Dictionary(
3456
{interface: client.GetAll(interface)
3457
for interface in
3458
client._get_all_interface_names()})
3459
for client in tcp_server.clients.values()})
3460
3461
def client_added_signal(self, client):
3462
"""Send the new standard signal and the old signal"""
3463
if use_dbus:
3464
# New standard signal
3465
self.InterfacesAdded(
3466
client.dbus_object_path,
3467
dbus.Dictionary(
3468
{interface: client.GetAll(interface)
3469
for interface in
3470
client._get_all_interface_names()}))
3471
# Old signal
3472
self.ClientAdded(client.dbus_object_path)
3473
3474
def client_removed_signal(self, client):
3475
"""Send the new standard signal and the old signal"""
3476
if use_dbus:
3477
# New standard signal
3478
self.InterfacesRemoved(
3479
client.dbus_object_path,
3480
client._get_all_interface_names())
3481
# Old signal
3482
self.ClientRemoved(client.dbus_object_path,
3483
client.name)
3484
3485
mandos_dbus_service = MandosDBusService()
3486
3487
# Save modules to variables to exempt the modules from being
3488
# unloaded before the function registered with atexit() is run.
3489
mp = multiprocessing
3490
wn = wnull
3491
2403
3492
def cleanup():
2404
3493
"Cleanup function; run on exit"
2405
service.cleanup()
2406
2407
multiprocessing.active_children()
3494
if zeroconf:
3495
service.cleanup()
3496
3497
mp.active_children()
3498
wn.close()
2408
3499
if not (tcp_server.clients or client_settings):
2409
3500
return
2410
3501
2411
3502
# Store client before exiting. Secrets are encrypted with key
2412
3503
# based on what config file has. If config file is
2413
3504
# removed/edited, old secret will thus be unrecovable.
2414
clients = []
3505
clients = {}
2415
3506
with PGPEngine() as pgp:
2416
for client in tcp_server.clients.itervalues():
3507
for client in tcp_server.clients.values():
2417
3508
key = client_settings[client.name]["secret"]
2418
3509
client.encrypted_secret = pgp.encrypt(client.secret,
2419
3510
key)
2420
3511
client_dict = {}
2421
2422
# A list of attributes that will not be stored when
2423
# shutting down.
2424
exclude = set(("bus", "changedstate", "secret",
2425
"checker"))
2426
for name, typ in (inspect.getmembers
2427
(dbus.service.Object)):
3512
3513
# A list of attributes that can not be pickled
3514
# + secret.
3515
exclude = {"bus", "changedstate", "secret",
3516
"checker", "server_settings"}
3517
for name, typ in inspect.getmembers(dbus.service
3518
.Object):
2428
3519
exclude.add(name)
2429
3520
2430
3521
client_dict["encrypted_secret"] = (client
2431
3522
.encrypted_secret)
2432
3523
for attr in client.client_structure:
2433
3524
if attr not in exclude:
2434
3525
client_dict[attr] = getattr(client, attr)
2435
2436
clients.append(client_dict)
3526
3527
clients[client.name] = client_dict
2437
3528
del client_settings[client.name]["secret"]
2438
3529
2439
3530
try:
2440
with os.fdopen(os.open(stored_state_path,
2441
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2442
0600), "wb") as stored_state:
2443
pickle.dump((clients, client_settings), stored_state)
3531
with tempfile.NamedTemporaryFile(
3532
mode='wb',
3533
suffix=".pickle",
3534
prefix='clients-',
3535
dir=os.path.dirname(stored_state_path),
3536
delete=False) as stored_state:
3537
pickle.dump((clients, client_settings), stored_state,
3538
protocol=2)
3539
tempname = stored_state.name
3540
os.rename(tempname, stored_state_path)
2444
3541
except (IOError, OSError) as e:
2445
logger.warning("Could not save persistent state: {0}"
2446
.format(e))
2447
if e.errno not in (errno.ENOENT, errno.EACCES):
3542
if not debug:
3543
try:
3544
os.remove(tempname)
3545
except NameError:
3546
pass
3547
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3548
logger.warning("Could not save persistent state: {}"
3549
.format(os.strerror(e.errno)))
3550
else:
3551
logger.warning("Could not save persistent state:",
3552
exc_info=e)
2448
3553
raise
2449
3554
2450
3555
# Delete all clients, and settings from config
2451
3556
while tcp_server.clients:
2452
3557
name, client = tcp_server.clients.popitem()
2453
3558
if use_dbus:
2454
3559
client.remove_from_connection()
2455
# Don't signal anything except ClientRemoved
3560
# Don't signal the disabling
2456
3561
client.disable(quiet=True)
3562
# Emit D-Bus signal for removal
2457
3563
if use_dbus:
2458
# Emit D-Bus signal
2459
mandos_dbus_service.ClientRemoved(client
2460
.dbus_object_path,
2461
client.name)
3564
mandos_dbus_service.client_removed_signal(client)
2462
3565
client_settings.clear()
2463
3566
2464
3567
atexit.register(cleanup)
2465
2466
for client in tcp_server.clients.itervalues():
3568
3569
for client in tcp_server.clients.values():
2467
3570
if use_dbus:
2468
# Emit D-Bus signal
2469
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3571
# Emit D-Bus signal for adding
3572
mandos_dbus_service.client_added_signal(client)
2470
3573
# Need to initiate checking of clients
2471
3574
if client.enabled:
2472
3575
client.init_checker()
2473
3576
2474
3577
tcp_server.enable()
2475
3578
tcp_server.server_activate()
2476
3579
2477
3580
# Find out what port we got
2478
service.port = tcp_server.socket.getsockname()[1]
3581
if zeroconf:
3582
service.port = tcp_server.socket.getsockname()[1]
2479
3583
if use_ipv6:
2480
3584
logger.info("Now listening on address %r, port %d,"
2481
" flowinfo %d, scope_id %d"
2482
% tcp_server.socket.getsockname())
3585
" flowinfo %d, scope_id %d",
3586
*tcp_server.socket.getsockname())
2483
3587
else: # IPv4
2484
logger.info("Now listening on address %r, port %d"
2485
% tcp_server.socket.getsockname())
2486
2487
#service.interface = tcp_server.socket.getsockname()[3]
2488
3588
logger.info("Now listening on address %r, port %d",
3589
*tcp_server.socket.getsockname())
3590
3591
# service.interface = tcp_server.socket.getsockname()[3]
3592
2489
3593
try:
2490
# From the Avahi example code
2491
try:
2492
service.activate()
2493
except dbus.exceptions.DBusException as error:
2494
logger.critical("DBusException: %s", error)
2495
cleanup()
2496
sys.exit(1)
2497
# End of Avahi example code
2498
2499
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2500
lambda *args, **kwargs:
2501
(tcp_server.handle_request
2502
(*args[2:], **kwargs) or True))
2503
3594
if zeroconf:
3595
# From the Avahi example code
3596
try:
3597
service.activate()
3598
except dbus.exceptions.DBusException as error:
3599
logger.critical("D-Bus Exception", exc_info=error)
3600
cleanup()
3601
sys.exit(1)
3602
# End of Avahi example code
3603
3604
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3605
lambda *args, **kwargs:
3606
(tcp_server.handle_request
3607
(*args[2:], **kwargs) or True))
3608
2504
3609
logger.debug("Starting main loop")
2505
3610
main_loop.run()
2506
3611
except AvahiError as error:
2507
logger.critical("AvahiError: %s", error)
3612
logger.critical("Avahi Error", exc_info=error)
2508
3613
cleanup()
2509
3614
sys.exit(1)
2510
3615
except KeyboardInterrupt:
2515
3620
# Must run before the D-Bus bus name gets deregistered
2516
3621
cleanup()
2517
3622
3623
2518
3624
if __name__ == '__main__':
2519
3625
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0