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- Committer: Teddy Hogeborn
- Date: 2019-07-25 21:42:40 UTC
- mto: This revision was merged to the branch mainline in revision 384.
- Revision ID: teddy@recompile.se-20190725214240-31i9qehf60xb8yu4
Use hexadecimal unicode character references, not decimal
* mandos-options.xml (priority): Use "​" instead of "​"
to make it slightly more clear that ZERO WIDTH SPACE is intended.
* mandos-options.xml (priority): Use "​" instead of "​"
to make it slightly more clear that ZERO WIDTH SPACE is intended.
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
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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
#
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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
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
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
82
import dbus.service
71
import gobject
72
import avahi
83
from gi.repository import GLib
73
84
from dbus.mainloop.glib import DBusGMainLoop
74
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
89
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 = "1.8.4"
90
119
stored_state_file = "clients.pickle"
91
120
92
121
logger = logging.getLogger()
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
122
syslogger = None
96
123
97
124
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
101
127
except (OSError, AttributeError):
128
102
129
def if_nametoindex(interface):
103
130
"Get an interface index the hard way, i.e. using fcntl()"
104
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
132
with contextlib.closing(socket.socket()) as s:
106
133
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
111
136
return interface_index
112
137
113
138
114
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):
115
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"""init logger and add loglevel"""
116
157
158
global syslogger
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
117
162
syslogger.setFormatter(logging.Formatter
118
163
('Mandos [%(process)d]: %(levelname)s:'
119
164
' %(message)s'))
120
165
logger.addHandler(syslogger)
121
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
124
' [%(process)d]:'
125
' %(levelname)s:'
126
' %(message)s'))
127
logger.addHandler(console)
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)
128
174
logger.setLevel(level)
129
175
130
176
131
class CryptoError(Exception):
177
class PGPError(Exception):
178
"""Exception if encryption/decryption fails"""
132
179
pass
133
180
134
181
135
class Crypto(object):
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 CryptoError(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 CryptoError(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
IF_UNSPEC = -1 # avahi-common/address.h
281
PROTO_UNSPEC = -1 # avahi-common/address.h
282
PROTO_INET = 0 # avahi-common/address.h
283
PROTO_INET6 = 1 # avahi-common/address.h
284
DBUS_NAME = "org.freedesktop.Avahi"
285
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
286
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
287
DBUS_PATH_SERVER = "/"
288
289
@staticmethod
290
def string_array_to_txt_array(t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
209
302
210
303
class AvahiError(Exception):
211
304
def __init__(self, value, *args, **kwargs):
212
305
self.value = value
213
super(AvahiError, self).__init__(value, *args, **kwargs)
214
def __unicode__(self):
215
return unicode(repr(self.value))
306
return super(AvahiError, self).__init__(value, *args,
307
**kwargs)
308
216
309
217
310
class AvahiServiceError(AvahiError):
218
311
pass
219
312
313
220
314
class AvahiGroupError(AvahiError):
221
315
pass
222
316
223
317
224
318
class AvahiService(object):
225
319
"""An Avahi (Zeroconf) service.
226
320
227
321
Attributes:
228
322
interface: integer; avahi.IF_UNSPEC or an interface index.
229
323
Used to optionally bind to the specified interface.
230
324
name: string; Example: 'Mandos'
231
325
type: string; Example: '_mandos._tcp'.
232
See <http://www.dns-sd.org/ServiceTypes.html>
326
See <https://www.iana.org/assignments/service-names-port-numbers>
233
327
port: integer; what port to announce
234
328
TXT: list of strings; TXT record for the service
235
329
domain: string; Domain to publish on, default to .local if empty.
241
335
server: D-Bus Server
242
336
bus: dbus.SystemBus()
243
337
"""
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):
338
339
def __init__(self,
340
interface=avahi.IF_UNSPEC,
341
name=None,
342
servicetype=None,
343
port=None,
344
TXT=None,
345
domain="",
346
host="",
347
max_renames=32768,
348
protocol=avahi.PROTO_UNSPEC,
349
bus=None):
248
350
self.interface = interface
249
351
self.name = name
250
352
self.type = servicetype
259
361
self.server = None
260
362
self.bus = bus
261
363
self.entry_group_state_changed_match = None
262
def rename(self):
364
365
def rename(self, remove=True):
263
366
"""Derived from the Avahi example code"""
264
367
if self.rename_count >= self.max_renames:
265
368
logger.critical("No suitable Zeroconf service name found"
266
369
" after %i retries, exiting.",
267
370
self.rename_count)
268
371
raise AvahiServiceError("Too many renames")
269
self.name = unicode(self.server
270
.GetAlternativeServiceName(self.name))
372
self.name = str(
373
self.server.GetAlternativeServiceName(self.name))
374
self.rename_count += 1
271
375
logger.info("Changing Zeroconf service name to %r ...",
272
376
self.name)
273
self.remove()
377
if remove:
378
self.remove()
274
379
try:
275
380
self.add()
276
381
except dbus.exceptions.DBusException as error:
277
logger.critical("DBusException: %s", error)
278
self.cleanup()
279
os._exit(1)
280
self.rename_count += 1
382
if (error.get_dbus_name()
383
== "org.freedesktop.Avahi.CollisionError"):
384
logger.info("Local Zeroconf service name collision.")
385
return self.rename(remove=False)
386
else:
387
logger.critical("D-Bus Exception", exc_info=error)
388
self.cleanup()
389
os._exit(1)
390
281
391
def remove(self):
282
392
"""Derived from the Avahi example code"""
283
393
if self.entry_group_state_changed_match is not None:
285
395
self.entry_group_state_changed_match = None
286
396
if self.group is not None:
287
397
self.group.Reset()
398
288
399
def add(self):
289
400
"""Derived from the Avahi example code"""
290
401
self.remove()
307
418
dbus.UInt16(self.port),
308
419
avahi.string_array_to_txt_array(self.TXT))
309
420
self.group.Commit()
421
310
422
def entry_group_state_changed(self, state, error):
311
423
"""Derived from the Avahi example code"""
312
424
logger.debug("Avahi entry group state change: %i", state)
313
425
314
426
if state == avahi.ENTRY_GROUP_ESTABLISHED:
315
427
logger.debug("Zeroconf service established.")
316
428
elif state == avahi.ENTRY_GROUP_COLLISION:
318
430
self.rename()
319
431
elif state == avahi.ENTRY_GROUP_FAILURE:
320
432
logger.critical("Avahi: Error in group state changed %s",
321
unicode(error))
322
raise AvahiGroupError("State changed: %s"
323
% unicode(error))
433
str(error))
434
raise AvahiGroupError("State changed: {!s}".format(error))
435
324
436
def cleanup(self):
325
437
"""Derived from the Avahi example code"""
326
438
if self.group is not None:
331
443
pass
332
444
self.group = None
333
445
self.remove()
446
334
447
def server_state_changed(self, state, error=None):
335
448
"""Derived from the Avahi example code"""
336
449
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" }
450
bad_states = {
451
avahi.SERVER_INVALID: "Zeroconf server invalid",
452
avahi.SERVER_REGISTERING: None,
453
avahi.SERVER_COLLISION: "Zeroconf server name collision",
454
avahi.SERVER_FAILURE: "Zeroconf server failure",
455
}
344
456
if state in bad_states:
345
457
if bad_states[state] is not None:
346
458
if error is None:
349
461
logger.error(bad_states[state] + ": %r", error)
350
462
self.cleanup()
351
463
elif state == avahi.SERVER_RUNNING:
352
self.add()
464
try:
465
self.add()
466
except dbus.exceptions.DBusException as error:
467
if (error.get_dbus_name()
468
== "org.freedesktop.Avahi.CollisionError"):
469
logger.info("Local Zeroconf service name"
470
" collision.")
471
return self.rename(remove=False)
472
else:
473
logger.critical("D-Bus Exception", exc_info=error)
474
self.cleanup()
475
os._exit(1)
353
476
else:
354
477
if error is None:
355
478
logger.debug("Unknown state: %r", state)
356
479
else:
357
480
logger.debug("Unknown state: %r: %r", state, error)
481
358
482
def activate(self):
359
483
"""Derived from the Avahi example code"""
360
484
if self.server is None:
364
488
follow_name_owner_changes=True),
365
489
avahi.DBUS_INTERFACE_SERVER)
366
490
self.server.connect_to_signal("StateChanged",
367
self.server_state_changed)
491
self.server_state_changed)
368
492
self.server_state_changed(self.server.GetState())
369
493
494
370
495
class AvahiServiceToSyslog(AvahiService):
371
def rename(self):
496
def rename(self, *args, **kwargs):
372
497
"""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))
498
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
499
syslogger.setFormatter(logging.Formatter(
500
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
501
.format(self.name)))
378
502
return ret
379
503
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
504
505
# Pretend that we have a GnuTLS module
506
class gnutls(object):
507
"""This isn't so much a class as it is a module-like namespace."""
508
509
library = ctypes.util.find_library("gnutls")
510
if library is None:
511
library = ctypes.util.find_library("gnutls-deb0")
512
_library = ctypes.cdll.LoadLibrary(library)
513
del library
514
515
# Unless otherwise indicated, the constants and types below are
516
# all from the gnutls/gnutls.h C header file.
517
518
# Constants
519
E_SUCCESS = 0
520
E_INTERRUPTED = -52
521
E_AGAIN = -28
522
CRT_OPENPGP = 2
523
CRT_RAWPK = 3
524
CLIENT = 2
525
SHUT_RDWR = 0
526
CRD_CERTIFICATE = 1
527
E_NO_CERTIFICATE_FOUND = -49
528
X509_FMT_DER = 0
529
NO_TICKETS = 1<<10
530
ENABLE_RAWPK = 1<<18
531
CTYPE_PEERS = 3
532
KEYID_USE_SHA256 = 1 # gnutls/x509.h
533
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
534
535
# Types
536
class session_int(ctypes.Structure):
537
_fields_ = []
538
session_t = ctypes.POINTER(session_int)
539
540
class certificate_credentials_st(ctypes.Structure):
541
_fields_ = []
542
certificate_credentials_t = ctypes.POINTER(
543
certificate_credentials_st)
544
certificate_type_t = ctypes.c_int
545
546
class datum_t(ctypes.Structure):
547
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
548
('size', ctypes.c_uint)]
549
550
class openpgp_crt_int(ctypes.Structure):
551
_fields_ = []
552
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
553
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
554
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
555
credentials_type_t = ctypes.c_int
556
transport_ptr_t = ctypes.c_void_p
557
close_request_t = ctypes.c_int
558
559
# Exceptions
560
class Error(Exception):
561
def __init__(self, message=None, code=None, args=()):
562
# Default usage is by a message string, but if a return
563
# code is passed, convert it to a string with
564
# gnutls.strerror()
565
self.code = code
566
if message is None and code is not None:
567
message = gnutls.strerror(code)
568
return super(gnutls.Error, self).__init__(
569
message, *args)
570
571
class CertificateSecurityError(Error):
572
pass
573
574
# Classes
575
class Credentials(object):
576
def __init__(self):
577
self._c_object = gnutls.certificate_credentials_t()
578
gnutls.certificate_allocate_credentials(
579
ctypes.byref(self._c_object))
580
self.type = gnutls.CRD_CERTIFICATE
581
582
def __del__(self):
583
gnutls.certificate_free_credentials(self._c_object)
584
585
class ClientSession(object):
586
def __init__(self, socket, credentials=None):
587
self._c_object = gnutls.session_t()
588
gnutls_flags = gnutls.CLIENT
589
if gnutls.check_version("3.5.6"):
590
gnutls_flags |= gnutls.NO_TICKETS
591
if gnutls.has_rawpk:
592
gnutls_flags |= gnutls.ENABLE_RAWPK
593
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
594
del gnutls_flags
595
gnutls.set_default_priority(self._c_object)
596
gnutls.transport_set_ptr(self._c_object, socket.fileno())
597
gnutls.handshake_set_private_extensions(self._c_object,
598
True)
599
self.socket = socket
600
if credentials is None:
601
credentials = gnutls.Credentials()
602
gnutls.credentials_set(self._c_object, credentials.type,
603
ctypes.cast(credentials._c_object,
604
ctypes.c_void_p))
605
self.credentials = credentials
606
607
def __del__(self):
608
gnutls.deinit(self._c_object)
609
610
def handshake(self):
611
return gnutls.handshake(self._c_object)
612
613
def send(self, data):
614
data = bytes(data)
615
data_len = len(data)
616
while data_len > 0:
617
data_len -= gnutls.record_send(self._c_object,
618
data[-data_len:],
619
data_len)
620
621
def bye(self):
622
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
623
624
# Error handling functions
625
def _error_code(result):
626
"""A function to raise exceptions on errors, suitable
627
for the 'restype' attribute on ctypes functions"""
628
if result >= 0:
629
return result
630
if result == gnutls.E_NO_CERTIFICATE_FOUND:
631
raise gnutls.CertificateSecurityError(code=result)
632
raise gnutls.Error(code=result)
633
634
def _retry_on_error(result, func, arguments):
635
"""A function to retry on some errors, suitable
636
for the 'errcheck' attribute on ctypes functions"""
637
while result < 0:
638
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
639
return _error_code(result)
640
result = func(*arguments)
641
return result
642
643
# Unless otherwise indicated, the function declarations below are
644
# all from the gnutls/gnutls.h C header file.
645
646
# Functions
647
priority_set_direct = _library.gnutls_priority_set_direct
648
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
649
ctypes.POINTER(ctypes.c_char_p)]
650
priority_set_direct.restype = _error_code
651
652
init = _library.gnutls_init
653
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
654
init.restype = _error_code
655
656
set_default_priority = _library.gnutls_set_default_priority
657
set_default_priority.argtypes = [session_t]
658
set_default_priority.restype = _error_code
659
660
record_send = _library.gnutls_record_send
661
record_send.argtypes = [session_t, ctypes.c_void_p,
662
ctypes.c_size_t]
663
record_send.restype = ctypes.c_ssize_t
664
record_send.errcheck = _retry_on_error
665
666
certificate_allocate_credentials = (
667
_library.gnutls_certificate_allocate_credentials)
668
certificate_allocate_credentials.argtypes = [
669
ctypes.POINTER(certificate_credentials_t)]
670
certificate_allocate_credentials.restype = _error_code
671
672
certificate_free_credentials = (
673
_library.gnutls_certificate_free_credentials)
674
certificate_free_credentials.argtypes = [
675
certificate_credentials_t]
676
certificate_free_credentials.restype = None
677
678
handshake_set_private_extensions = (
679
_library.gnutls_handshake_set_private_extensions)
680
handshake_set_private_extensions.argtypes = [session_t,
681
ctypes.c_int]
682
handshake_set_private_extensions.restype = None
683
684
credentials_set = _library.gnutls_credentials_set
685
credentials_set.argtypes = [session_t, credentials_type_t,
686
ctypes.c_void_p]
687
credentials_set.restype = _error_code
688
689
strerror = _library.gnutls_strerror
690
strerror.argtypes = [ctypes.c_int]
691
strerror.restype = ctypes.c_char_p
692
693
certificate_type_get = _library.gnutls_certificate_type_get
694
certificate_type_get.argtypes = [session_t]
695
certificate_type_get.restype = _error_code
696
697
certificate_get_peers = _library.gnutls_certificate_get_peers
698
certificate_get_peers.argtypes = [session_t,
699
ctypes.POINTER(ctypes.c_uint)]
700
certificate_get_peers.restype = ctypes.POINTER(datum_t)
701
702
global_set_log_level = _library.gnutls_global_set_log_level
703
global_set_log_level.argtypes = [ctypes.c_int]
704
global_set_log_level.restype = None
705
706
global_set_log_function = _library.gnutls_global_set_log_function
707
global_set_log_function.argtypes = [log_func]
708
global_set_log_function.restype = None
709
710
deinit = _library.gnutls_deinit
711
deinit.argtypes = [session_t]
712
deinit.restype = None
713
714
handshake = _library.gnutls_handshake
715
handshake.argtypes = [session_t]
716
handshake.restype = _error_code
717
handshake.errcheck = _retry_on_error
718
719
transport_set_ptr = _library.gnutls_transport_set_ptr
720
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
721
transport_set_ptr.restype = None
722
723
bye = _library.gnutls_bye
724
bye.argtypes = [session_t, close_request_t]
725
bye.restype = _error_code
726
bye.errcheck = _retry_on_error
727
728
check_version = _library.gnutls_check_version
729
check_version.argtypes = [ctypes.c_char_p]
730
check_version.restype = ctypes.c_char_p
731
732
_need_version = b"3.3.0"
733
if check_version(_need_version) is None:
734
raise self.Error("Needs GnuTLS {} or later"
735
.format(_need_version))
736
737
_tls_rawpk_version = b"3.6.6"
738
has_rawpk = bool(check_version(_tls_rawpk_version))
739
740
if has_rawpk:
741
# Types
742
class pubkey_st(ctypes.Structure):
743
_fields = []
744
pubkey_t = ctypes.POINTER(pubkey_st)
745
746
x509_crt_fmt_t = ctypes.c_int
747
748
# All the function declarations below are from gnutls/abstract.h
749
pubkey_init = _library.gnutls_pubkey_init
750
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
751
pubkey_init.restype = _error_code
752
753
pubkey_import = _library.gnutls_pubkey_import
754
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
755
x509_crt_fmt_t]
756
pubkey_import.restype = _error_code
757
758
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
759
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
760
ctypes.POINTER(ctypes.c_ubyte),
761
ctypes.POINTER(ctypes.c_size_t)]
762
pubkey_get_key_id.restype = _error_code
763
764
pubkey_deinit = _library.gnutls_pubkey_deinit
765
pubkey_deinit.argtypes = [pubkey_t]
766
pubkey_deinit.restype = None
767
else:
768
# All the function declarations below are from gnutls/openpgp.h
769
770
openpgp_crt_init = _library.gnutls_openpgp_crt_init
771
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
772
openpgp_crt_init.restype = _error_code
773
774
openpgp_crt_import = _library.gnutls_openpgp_crt_import
775
openpgp_crt_import.argtypes = [openpgp_crt_t,
776
ctypes.POINTER(datum_t),
777
openpgp_crt_fmt_t]
778
openpgp_crt_import.restype = _error_code
779
780
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
781
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
782
ctypes.POINTER(ctypes.c_uint)]
783
openpgp_crt_verify_self.restype = _error_code
784
785
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
786
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
787
openpgp_crt_deinit.restype = None
788
789
openpgp_crt_get_fingerprint = (
790
_library.gnutls_openpgp_crt_get_fingerprint)
791
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
792
ctypes.c_void_p,
793
ctypes.POINTER(
794
ctypes.c_size_t)]
795
openpgp_crt_get_fingerprint.restype = _error_code
796
797
if check_version("3.6.4"):
798
certificate_type_get2 = _library.gnutls_certificate_type_get2
799
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
800
certificate_type_get2.restype = _error_code
801
802
# Remove non-public functions
803
del _error_code, _retry_on_error
804
805
806
def call_pipe(connection, # : multiprocessing.Connection
807
func, *args, **kwargs):
808
"""This function is meant to be called by multiprocessing.Process
809
810
This function runs func(*args, **kwargs), and writes the resulting
811
return value on the provided multiprocessing.Connection.
812
"""
813
connection.send(func(*args, **kwargs))
814
connection.close()
815
816
386
817
class Client(object):
387
818
"""A representation of a client host served by this server.
388
819
389
820
Attributes:
390
_approved: bool(); 'None' if not yet approved/disapproved
821
approved: bool(); 'None' if not yet approved/disapproved
391
822
approval_delay: datetime.timedelta(); Time to wait for approval
392
823
approval_duration: datetime.timedelta(); Duration of one approval
393
824
checker: subprocess.Popen(); a running checker process used
394
825
to see if the client lives.
395
826
'None' if no process is running.
396
checker_callback_tag: a gobject event source tag, or None
827
checker_callback_tag: a GLib event source tag, or None
397
828
checker_command: string; External command which is run to check
398
829
if client lives. %() expansions are done at
399
830
runtime with vars(self) as dict, so that for
400
831
instance %(name)s can be used in the command.
401
checker_initiator_tag: a gobject event source tag, or None
832
checker_initiator_tag: a GLib event source tag, or None
402
833
created: datetime.datetime(); (UTC) object creation
403
834
client_structure: Object describing what attributes a client has
404
835
and is used for storing the client at exit
405
836
current_checker_command: string; current running checker_command
406
disable_initiator_tag: a gobject event source tag, or None
837
disable_initiator_tag: a GLib event source tag, or None
407
838
enabled: bool()
408
839
fingerprint: string (40 or 32 hexadecimal digits); used to
409
uniquely identify the client
840
uniquely identify an OpenPGP client
841
key_id: string (64 hexadecimal digits); used to uniquely identify
842
a client using raw public keys
410
843
host: string; available for use by the checker command
411
844
interval: datetime.timedelta(); How often to start a new checker
412
845
last_approval_request: datetime.datetime(); (UTC) or None
413
846
last_checked_ok: datetime.datetime(); (UTC) or None
414
415
847
last_checker_status: integer between 0 and 255 reflecting exit
416
848
status of last checker. -1 reflects crashed
417
checker, or None.
849
checker, -2 means no checker completed yet.
850
last_checker_signal: The signal which killed the last checker, if
851
last_checker_status is -1
418
852
last_enabled: datetime.datetime(); (UTC) or None
419
853
name: string; from the config file, used in log messages and
420
854
D-Bus identifiers
421
855
secret: bytestring; sent verbatim (over TLS) to client
422
856
timeout: datetime.timedelta(); How long from last_checked_ok
423
857
until this client is disabled
424
extended_timeout: extra long timeout when password has been sent
858
extended_timeout: extra long timeout when secret has been sent
425
859
runtime_expansions: Allowed attributes for runtime expansion.
426
860
expires: datetime.datetime(); time (UTC) when a client will be
427
861
disabled, or None
862
server_settings: The server_settings dict from main()
428
863
"""
429
864
430
865
runtime_expansions = ("approval_delay", "approval_duration",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
866
"created", "enabled", "expires", "key_id",
867
"fingerprint", "host", "interval",
868
"last_approval_request", "last_checked_ok",
433
869
"last_enabled", "name", "timeout")
434
435
def timeout_milliseconds(self):
436
"Return the 'timeout' attribute in milliseconds"
437
return _timedelta_to_milliseconds(self.timeout)
438
439
def extended_timeout_milliseconds(self):
440
"Return the 'extended_timeout' attribute in milliseconds"
441
return _timedelta_to_milliseconds(self.extended_timeout)
442
443
def interval_milliseconds(self):
444
"Return the 'interval' attribute in milliseconds"
445
return _timedelta_to_milliseconds(self.interval)
446
447
def approval_delay_milliseconds(self):
448
return _timedelta_to_milliseconds(self.approval_delay)
449
450
def __init__(self, name = None, config=None):
451
"""Note: the 'checker' key in 'config' sets the
452
'checker_command' attribute and *not* the 'checker'
453
attribute."""
870
client_defaults = {
871
"timeout": "PT5M",
872
"extended_timeout": "PT15M",
873
"interval": "PT2M",
874
"checker": "fping -q -- %%(host)s",
875
"host": "",
876
"approval_delay": "PT0S",
877
"approval_duration": "PT1S",
878
"approved_by_default": "True",
879
"enabled": "True",
880
}
881
882
@staticmethod
883
def config_parser(config):
884
"""Construct a new dict of client settings of this form:
885
{ client_name: {setting_name: value, ...}, ...}
886
with exceptions for any special settings as defined above.
887
NOTE: Must be a pure function. Must return the same result
888
value given the same arguments.
889
"""
890
settings = {}
891
for client_name in config.sections():
892
section = dict(config.items(client_name))
893
client = settings[client_name] = {}
894
895
client["host"] = section["host"]
896
# Reformat values from string types to Python types
897
client["approved_by_default"] = config.getboolean(
898
client_name, "approved_by_default")
899
client["enabled"] = config.getboolean(client_name,
900
"enabled")
901
902
# Uppercase and remove spaces from key_id and fingerprint
903
# for later comparison purposes with return value from the
904
# key_id() and fingerprint() functions
905
client["key_id"] = (section.get("key_id", "").upper()
906
.replace(" ", ""))
907
client["fingerprint"] = (section["fingerprint"].upper()
908
.replace(" ", ""))
909
if "secret" in section:
910
client["secret"] = codecs.decode(section["secret"]
911
.encode("utf-8"),
912
"base64")
913
elif "secfile" in section:
914
with open(os.path.expanduser(os.path.expandvars
915
(section["secfile"])),
916
"rb") as secfile:
917
client["secret"] = secfile.read()
918
else:
919
raise TypeError("No secret or secfile for section {}"
920
.format(section))
921
client["timeout"] = string_to_delta(section["timeout"])
922
client["extended_timeout"] = string_to_delta(
923
section["extended_timeout"])
924
client["interval"] = string_to_delta(section["interval"])
925
client["approval_delay"] = string_to_delta(
926
section["approval_delay"])
927
client["approval_duration"] = string_to_delta(
928
section["approval_duration"])
929
client["checker_command"] = section["checker"]
930
client["last_approval_request"] = None
931
client["last_checked_ok"] = None
932
client["last_checker_status"] = -2
933
934
return settings
935
936
def __init__(self, settings, name=None, server_settings=None):
454
937
self.name = name
455
if config is None:
456
config = {}
938
if server_settings is None:
939
server_settings = {}
940
self.server_settings = server_settings
941
# adding all client settings
942
for setting, value in settings.items():
943
setattr(self, setting, value)
944
945
if self.enabled:
946
if not hasattr(self, "last_enabled"):
947
self.last_enabled = datetime.datetime.utcnow()
948
if not hasattr(self, "expires"):
949
self.expires = (datetime.datetime.utcnow()
950
+ self.timeout)
951
else:
952
self.last_enabled = None
953
self.expires = None
954
457
955
logger.debug("Creating client %r", self.name)
458
# Uppercase and remove spaces from fingerprint for later
459
# comparison purposes with return value from the fingerprint()
460
# function
461
self.fingerprint = (config["fingerprint"].upper()
462
.replace(" ", ""))
956
logger.debug(" Key ID: %s", self.key_id)
463
957
logger.debug(" Fingerprint: %s", self.fingerprint)
464
if "secret" in config:
465
self.secret = config["secret"].decode("base64")
466
elif "secfile" in config:
467
with open(os.path.expanduser(os.path.expandvars
468
(config["secfile"])),
469
"rb") as secfile:
470
self.secret = secfile.read()
471
else:
472
raise TypeError("No secret or secfile for client %s"
473
% self.name)
474
self.host = config.get("host", "")
475
self.created = datetime.datetime.utcnow()
476
self.enabled = config.get("enabled", True)
477
self.last_approval_request = None
478
if self.enabled:
479
self.last_enabled = datetime.datetime.utcnow()
480
else:
481
self.last_enabled = None
482
self.last_checked_ok = None
483
self.last_checker_status = None
484
self.timeout = string_to_delta(config["timeout"])
485
self.extended_timeout = string_to_delta(config
486
["extended_timeout"])
487
self.interval = string_to_delta(config["interval"])
958
self.created = settings.get("created",
959
datetime.datetime.utcnow())
960
961
# attributes specific for this server instance
488
962
self.checker = None
489
963
self.checker_initiator_tag = None
490
964
self.disable_initiator_tag = None
491
if self.enabled:
492
self.expires = datetime.datetime.utcnow() + self.timeout
493
else:
494
self.expires = None
495
965
self.checker_callback_tag = None
496
self.checker_command = config["checker"]
497
966
self.current_checker_command = None
498
self._approved = None
499
self.approved_by_default = config.get("approved_by_default",
500
True)
967
self.approved = None
501
968
self.approvals_pending = 0
502
self.approval_delay = string_to_delta(
503
config["approval_delay"])
504
self.approval_duration = string_to_delta(
505
config["approval_duration"])
506
self.changedstate = (multiprocessing_manager
507
.Condition(multiprocessing_manager
508
.Lock()))
509
self.client_structure = [attr for attr in
510
self.__dict__.iterkeys()
969
self.changedstate = multiprocessing_manager.Condition(
970
multiprocessing_manager.Lock())
971
self.client_structure = [attr
972
for attr in self.__dict__.keys()
511
973
if not attr.startswith("_")]
512
974
self.client_structure.append("client_structure")
513
514
for name, t in inspect.getmembers(type(self),
515
lambda obj:
516
isinstance(obj,
517
property)):
975
976
for name, t in inspect.getmembers(
977
type(self), lambda obj: isinstance(obj, property)):
518
978
if not name.startswith("_"):
519
979
self.client_structure.append(name)
520
980
521
981
# Send notice to process children that client state has changed
522
982
def send_changedstate(self):
523
983
with self.changedstate:
524
984
self.changedstate.notify_all()
525
985
526
986
def enable(self):
527
987
"""Start this client's checker and timeout hooks"""
528
988
if getattr(self, "enabled", False):
529
989
# Already enabled
530
990
return
531
self.send_changedstate()
532
991
self.expires = datetime.datetime.utcnow() + self.timeout
533
992
self.enabled = True
534
993
self.last_enabled = datetime.datetime.utcnow()
535
994
self.init_checker()
536
995
self.send_changedstate()
996
537
997
def disable(self, quiet=True):
538
998
"""Disable this client."""
539
999
if not getattr(self, "enabled", False):
540
1000
return False
541
1001
if not quiet:
542
self.send_changedstate()
543
if not quiet:
544
1002
logger.info("Disabling client %s", self.name)
545
if getattr(self, "disable_initiator_tag", False):
546
gobject.source_remove(self.disable_initiator_tag)
1003
if getattr(self, "disable_initiator_tag", None) is not None:
1004
GLib.source_remove(self.disable_initiator_tag)
547
1005
self.disable_initiator_tag = None
548
1006
self.expires = None
549
if getattr(self, "checker_initiator_tag", False):
550
gobject.source_remove(self.checker_initiator_tag)
1007
if getattr(self, "checker_initiator_tag", None) is not None:
1008
GLib.source_remove(self.checker_initiator_tag)
551
1009
self.checker_initiator_tag = None
552
1010
self.stop_checker()
553
1011
self.enabled = False
554
# Do not run this again if called by a gobject.timeout_add
1012
if not quiet:
1013
self.send_changedstate()
1014
# Do not run this again if called by a GLib.timeout_add
555
1015
return False
556
1016
557
1017
def __del__(self):
558
1018
self.disable()
559
1019
560
1020
def init_checker(self):
561
1021
# Schedule a new checker to be started an 'interval' from now,
562
1022
# and every interval from then on.
563
self.checker_initiator_tag = (gobject.timeout_add
564
(self.interval_milliseconds(),
565
self.start_checker))
1023
if self.checker_initiator_tag is not None:
1024
GLib.source_remove(self.checker_initiator_tag)
1025
self.checker_initiator_tag = GLib.timeout_add(
1026
int(self.interval.total_seconds() * 1000),
1027
self.start_checker)
566
1028
# Schedule a disable() when 'timeout' has passed
567
self.disable_initiator_tag = (gobject.timeout_add
568
(self.timeout_milliseconds(),
569
self.disable))
1029
if self.disable_initiator_tag is not None:
1030
GLib.source_remove(self.disable_initiator_tag)
1031
self.disable_initiator_tag = GLib.timeout_add(
1032
int(self.timeout.total_seconds() * 1000), self.disable)
570
1033
# Also start a new checker *right now*.
571
1034
self.start_checker()
572
573
def checker_callback(self, pid, condition, command):
1035
1036
def checker_callback(self, source, condition, connection,
1037
command):
574
1038
"""The checker has completed, so take appropriate actions."""
575
1039
self.checker_callback_tag = None
576
1040
self.checker = None
577
if os.WIFEXITED(condition):
578
self.last_checker_status = os.WEXITSTATUS(condition)
1041
# Read return code from connection (see call_pipe)
1042
returncode = connection.recv()
1043
connection.close()
1044
1045
if returncode >= 0:
1046
self.last_checker_status = returncode
1047
self.last_checker_signal = None
579
1048
if self.last_checker_status == 0:
580
1049
logger.info("Checker for %(name)s succeeded",
581
1050
vars(self))
582
1051
self.checked_ok()
583
1052
else:
584
logger.info("Checker for %(name)s failed",
585
vars(self))
1053
logger.info("Checker for %(name)s failed", vars(self))
586
1054
else:
587
1055
self.last_checker_status = -1
1056
self.last_checker_signal = -returncode
588
1057
logger.warning("Checker for %(name)s crashed?",
589
1058
vars(self))
590
591
def checked_ok(self, timeout=None):
592
"""Bump up the timeout for this client.
593
594
This should only be called when the client has been seen,
595
alive and well.
596
"""
1059
return False
1060
1061
def checked_ok(self):
1062
"""Assert that the client has been seen, alive and well."""
1063
self.last_checked_ok = datetime.datetime.utcnow()
1064
self.last_checker_status = 0
1065
self.last_checker_signal = None
1066
self.bump_timeout()
1067
1068
def bump_timeout(self, timeout=None):
1069
"""Bump up the timeout for this client."""
597
1070
if timeout is None:
598
1071
timeout = self.timeout
599
self.last_checked_ok = datetime.datetime.utcnow()
600
1072
if self.disable_initiator_tag is not None:
601
gobject.source_remove(self.disable_initiator_tag)
1073
GLib.source_remove(self.disable_initiator_tag)
1074
self.disable_initiator_tag = None
602
1075
if getattr(self, "enabled", False):
603
self.disable_initiator_tag = (gobject.timeout_add
604
(_timedelta_to_milliseconds
605
(timeout), self.disable))
1076
self.disable_initiator_tag = GLib.timeout_add(
1077
int(timeout.total_seconds() * 1000), self.disable)
606
1078
self.expires = datetime.datetime.utcnow() + timeout
607
1079
608
1080
def need_approval(self):
609
1081
self.last_approval_request = datetime.datetime.utcnow()
610
1082
611
1083
def start_checker(self):
612
1084
"""Start a new checker subprocess if one is not running.
613
1085
614
1086
If a checker already exists, leave it running and do
615
1087
nothing."""
616
1088
# The reason for not killing a running checker is that if we
617
# did that, then if a checker (for some reason) started
618
# running slowly and taking more than 'interval' time, the
619
# client would inevitably timeout, since no checker would get
620
# a chance to run to completion. If we instead leave running
1089
# did that, and if a checker (for some reason) started running
1090
# slowly and taking more than 'interval' time, then the client
1091
# would inevitably timeout, since no checker would get a
1092
# chance to run to completion. If we instead leave running
621
1093
# checkers alone, the checker would have to take more time
622
1094
# than 'timeout' for the client to be disabled, which is as it
623
1095
# should be.
624
625
# If a checker exists, make sure it is not a zombie
626
try:
627
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
628
except (AttributeError, OSError) as error:
629
if (isinstance(error, OSError)
630
and error.errno != errno.ECHILD):
631
raise error
632
else:
633
if pid:
634
logger.warning("Checker was a zombie")
635
gobject.source_remove(self.checker_callback_tag)
636
self.checker_callback(pid, status,
637
self.current_checker_command)
1096
1097
if self.checker is not None and not self.checker.is_alive():
1098
logger.warning("Checker was not alive; joining")
1099
self.checker.join()
1100
self.checker = None
638
1101
# Start a new checker if needed
639
1102
if self.checker is None:
1103
# Escape attributes for the shell
1104
escaped_attrs = {
1105
attr: re.escape(str(getattr(self, attr)))
1106
for attr in self.runtime_expansions}
640
1107
try:
641
# In case checker_command has exactly one % operator
642
command = self.checker_command % self.host
643
except TypeError:
644
# Escape attributes for the shell
645
escaped_attrs = dict(
646
(attr,
647
re.escape(unicode(str(getattr(self, attr, "")),
648
errors=
649
'replace')))
650
for attr in
651
self.runtime_expansions)
652
653
try:
654
command = self.checker_command % escaped_attrs
655
except TypeError as error:
656
logger.error('Could not format string "%s":'
657
' %s', self.checker_command, error)
658
return True # Try again later
1108
command = self.checker_command % escaped_attrs
1109
except TypeError as error:
1110
logger.error('Could not format string "%s"',
1111
self.checker_command,
1112
exc_info=error)
1113
return True # Try again later
659
1114
self.current_checker_command = command
660
try:
661
logger.info("Starting checker %r for %s",
662
command, self.name)
663
# We don't need to redirect stdout and stderr, since
664
# in normal mode, that is already done by daemon(),
665
# and in debug mode we don't want to. (Stdin is
666
# always replaced by /dev/null.)
667
self.checker = subprocess.Popen(command,
668
close_fds=True,
669
shell=True, cwd="/")
670
self.checker_callback_tag = (gobject.child_watch_add
671
(self.checker.pid,
672
self.checker_callback,
673
data=command))
674
# The checker may have completed before the gobject
675
# watch was added. Check for this.
676
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
677
if pid:
678
gobject.source_remove(self.checker_callback_tag)
679
self.checker_callback(pid, status, command)
680
except OSError as error:
681
logger.error("Failed to start subprocess: %s",
682
error)
683
# Re-run this periodically if run by gobject.timeout_add
1115
logger.info("Starting checker %r for %s", command,
1116
self.name)
1117
# We don't need to redirect stdout and stderr, since
1118
# in normal mode, that is already done by daemon(),
1119
# and in debug mode we don't want to. (Stdin is
1120
# always replaced by /dev/null.)
1121
# The exception is when not debugging but nevertheless
1122
# running in the foreground; use the previously
1123
# created wnull.
1124
popen_args = {"close_fds": True,
1125
"shell": True,
1126
"cwd": "/"}
1127
if (not self.server_settings["debug"]
1128
and self.server_settings["foreground"]):
1129
popen_args.update({"stdout": wnull,
1130
"stderr": wnull})
1131
pipe = multiprocessing.Pipe(duplex=False)
1132
self.checker = multiprocessing.Process(
1133
target=call_pipe,
1134
args=(pipe[1], subprocess.call, command),
1135
kwargs=popen_args)
1136
self.checker.start()
1137
self.checker_callback_tag = GLib.io_add_watch(
1138
pipe[0].fileno(), GLib.IO_IN,
1139
self.checker_callback, pipe[0], command)
1140
# Re-run this periodically if run by GLib.timeout_add
684
1141
return True
685
1142
686
1143
def stop_checker(self):
687
1144
"""Force the checker process, if any, to stop."""
688
1145
if self.checker_callback_tag:
689
gobject.source_remove(self.checker_callback_tag)
1146
GLib.source_remove(self.checker_callback_tag)
690
1147
self.checker_callback_tag = None
691
1148
if getattr(self, "checker", None) is None:
692
1149
return
693
1150
logger.debug("Stopping checker for %(name)s", vars(self))
694
try:
695
os.kill(self.checker.pid, signal.SIGTERM)
696
#time.sleep(0.5)
697
#if self.checker.poll() is None:
698
# os.kill(self.checker.pid, signal.SIGKILL)
699
except OSError as error:
700
if error.errno != errno.ESRCH: # No such process
701
raise
1151
self.checker.terminate()
702
1152
self.checker = None
703
1153
704
1154
705
def dbus_service_property(dbus_interface, signature="v",
706
access="readwrite", byte_arrays=False):
1155
def dbus_service_property(dbus_interface,
1156
signature="v",
1157
access="readwrite",
1158
byte_arrays=False):
707
1159
"""Decorators for marking methods of a DBusObjectWithProperties to
708
1160
become properties on the D-Bus.
709
1161
710
1162
The decorated method will be called with no arguments by "Get"
711
1163
and with one argument by "Set".
712
1164
713
1165
The parameters, where they are supported, are the same as
714
1166
dbus.service.method, except there is only "signature", since the
715
1167
type from Get() and the type sent to Set() is the same.
718
1170
# "Set" method, so we fail early here:
719
1171
if byte_arrays and signature != "ay":
720
1172
raise ValueError("Byte arrays not supported for non-'ay'"
721
" signature %r" % signature)
1173
" signature {!r}".format(signature))
1174
722
1175
def decorator(func):
723
1176
func._dbus_is_property = True
724
1177
func._dbus_interface = dbus_interface
727
1180
func._dbus_name = func.__name__
728
1181
if func._dbus_name.endswith("_dbus_property"):
729
1182
func._dbus_name = func._dbus_name[:-14]
730
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
731
return func
1183
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1184
return func
1185
1186
return decorator
1187
1188
1189
def dbus_interface_annotations(dbus_interface):
1190
"""Decorator for marking functions returning interface annotations
1191
1192
Usage:
1193
1194
@dbus_interface_annotations("org.example.Interface")
1195
def _foo(self): # Function name does not matter
1196
return {"org.freedesktop.DBus.Deprecated": "true",
1197
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1198
"false"}
1199
"""
1200
1201
def decorator(func):
1202
func._dbus_is_interface = True
1203
func._dbus_interface = dbus_interface
1204
func._dbus_name = dbus_interface
1205
return func
1206
1207
return decorator
1208
1209
1210
def dbus_annotations(annotations):
1211
"""Decorator to annotate D-Bus methods, signals or properties
1212
Usage:
1213
1214
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1215
"org.freedesktop.DBus.Property."
1216
"EmitsChangedSignal": "false"})
1217
@dbus_service_property("org.example.Interface", signature="b",
1218
access="r")
1219
def Property_dbus_property(self):
1220
return dbus.Boolean(False)
1221
1222
See also the DBusObjectWithAnnotations class.
1223
"""
1224
1225
def decorator(func):
1226
func._dbus_annotations = annotations
1227
return func
1228
732
1229
return decorator
733
1230
734
1231
735
1232
class DBusPropertyException(dbus.exceptions.DBusException):
736
1233
"""A base class for D-Bus property-related exceptions
737
1234
"""
738
def __unicode__(self):
739
return unicode(str(self))
1235
pass
740
1236
741
1237
742
1238
class DBusPropertyAccessException(DBusPropertyException):
751
1247
pass
752
1248
753
1249
754
class DBusObjectWithProperties(dbus.service.Object):
1250
class DBusObjectWithAnnotations(dbus.service.Object):
1251
"""A D-Bus object with annotations.
1252
1253
Classes inheriting from this can use the dbus_annotations
1254
decorator to add annotations to methods or signals.
1255
"""
1256
1257
@staticmethod
1258
def _is_dbus_thing(thing):
1259
"""Returns a function testing if an attribute is a D-Bus thing
1260
1261
If called like _is_dbus_thing("method") it returns a function
1262
suitable for use as predicate to inspect.getmembers().
1263
"""
1264
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1265
False)
1266
1267
def _get_all_dbus_things(self, thing):
1268
"""Returns a generator of (name, attribute) pairs
1269
"""
1270
return ((getattr(athing.__get__(self), "_dbus_name", name),
1271
athing.__get__(self))
1272
for cls in self.__class__.__mro__
1273
for name, athing in
1274
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1275
1276
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1277
out_signature="s",
1278
path_keyword='object_path',
1279
connection_keyword='connection')
1280
def Introspect(self, object_path, connection):
1281
"""Overloading of standard D-Bus method.
1282
1283
Inserts annotation tags on methods and signals.
1284
"""
1285
xmlstring = dbus.service.Object.Introspect(self, object_path,
1286
connection)
1287
try:
1288
document = xml.dom.minidom.parseString(xmlstring)
1289
1290
for if_tag in document.getElementsByTagName("interface"):
1291
# Add annotation tags
1292
for typ in ("method", "signal"):
1293
for tag in if_tag.getElementsByTagName(typ):
1294
annots = dict()
1295
for name, prop in (self.
1296
_get_all_dbus_things(typ)):
1297
if (name == tag.getAttribute("name")
1298
and prop._dbus_interface
1299
== if_tag.getAttribute("name")):
1300
annots.update(getattr(
1301
prop, "_dbus_annotations", {}))
1302
for name, value in annots.items():
1303
ann_tag = document.createElement(
1304
"annotation")
1305
ann_tag.setAttribute("name", name)
1306
ann_tag.setAttribute("value", value)
1307
tag.appendChild(ann_tag)
1308
# Add interface annotation tags
1309
for annotation, value in dict(
1310
itertools.chain.from_iterable(
1311
annotations().items()
1312
for name, annotations
1313
in self._get_all_dbus_things("interface")
1314
if name == if_tag.getAttribute("name")
1315
)).items():
1316
ann_tag = document.createElement("annotation")
1317
ann_tag.setAttribute("name", annotation)
1318
ann_tag.setAttribute("value", value)
1319
if_tag.appendChild(ann_tag)
1320
# Fix argument name for the Introspect method itself
1321
if (if_tag.getAttribute("name")
1322
== dbus.INTROSPECTABLE_IFACE):
1323
for cn in if_tag.getElementsByTagName("method"):
1324
if cn.getAttribute("name") == "Introspect":
1325
for arg in cn.getElementsByTagName("arg"):
1326
if (arg.getAttribute("direction")
1327
== "out"):
1328
arg.setAttribute("name",
1329
"xml_data")
1330
xmlstring = document.toxml("utf-8")
1331
document.unlink()
1332
except (AttributeError, xml.dom.DOMException,
1333
xml.parsers.expat.ExpatError) as error:
1334
logger.error("Failed to override Introspection method",
1335
exc_info=error)
1336
return xmlstring
1337
1338
1339
class DBusObjectWithProperties(DBusObjectWithAnnotations):
755
1340
"""A D-Bus object with properties.
756
1341
757
1342
Classes inheriting from this can use the dbus_service_property
758
1343
decorator to expose methods as D-Bus properties. It exposes the
759
1344
standard Get(), Set(), and GetAll() methods on the D-Bus.
760
1345
"""
761
762
@staticmethod
763
def _is_dbus_property(obj):
764
return getattr(obj, "_dbus_is_property", False)
765
766
def _get_all_dbus_properties(self):
767
"""Returns a generator of (name, attribute) pairs
768
"""
769
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
770
for cls in self.__class__.__mro__
771
for name, prop in
772
inspect.getmembers(cls, self._is_dbus_property))
773
1346
774
1347
def _get_dbus_property(self, interface_name, property_name):
775
1348
"""Returns a bound method if one exists which is a D-Bus
776
1349
property with the specified name and interface.
777
1350
"""
778
for cls in self.__class__.__mro__:
779
for name, value in (inspect.getmembers
780
(cls, self._is_dbus_property)):
1351
for cls in self.__class__.__mro__:
1352
for name, value in inspect.getmembers(
1353
cls, self._is_dbus_thing("property")):
781
1354
if (value._dbus_name == property_name
782
1355
and value._dbus_interface == interface_name):
783
1356
return value.__get__(self)
784
1357
785
1358
# No such property
786
raise DBusPropertyNotFound(self.dbus_object_path + ":"
787
+ interface_name + "."
788
+ property_name)
789
790
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1359
raise DBusPropertyNotFound("{}:{}.{}".format(
1360
self.dbus_object_path, interface_name, property_name))
1361
1362
@classmethod
1363
def _get_all_interface_names(cls):
1364
"""Get a sequence of all interfaces supported by an object"""
1365
return (name for name in set(getattr(getattr(x, attr),
1366
"_dbus_interface", None)
1367
for x in (inspect.getmro(cls))
1368
for attr in dir(x))
1369
if name is not None)
1370
1371
@dbus.service.method(dbus.PROPERTIES_IFACE,
1372
in_signature="ss",
791
1373
out_signature="v")
792
1374
def Get(self, interface_name, property_name):
793
1375
"""Standard D-Bus property Get() method, see D-Bus standard.
799
1381
if not hasattr(value, "variant_level"):
800
1382
return value
801
1383
return type(value)(value, variant_level=value.variant_level+1)
802
1384
803
1385
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
804
1386
def Set(self, interface_name, property_name, value):
805
1387
"""Standard D-Bus property Set() method, see D-Bus standard.
811
1393
# The byte_arrays option is not supported yet on
812
1394
# signatures other than "ay".
813
1395
if prop._dbus_signature != "ay":
814
raise ValueError
815
value = dbus.ByteArray(''.join(unichr(byte)
816
for byte in value))
1396
raise ValueError("Byte arrays not supported for non-"
1397
"'ay' signature {!r}"
1398
.format(prop._dbus_signature))
1399
value = dbus.ByteArray(b''.join(chr(byte)
1400
for byte in value))
817
1401
prop(value)
818
819
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1402
1403
@dbus.service.method(dbus.PROPERTIES_IFACE,
1404
in_signature="s",
820
1405
out_signature="a{sv}")
821
1406
def GetAll(self, interface_name):
822
1407
"""Standard D-Bus property GetAll() method, see D-Bus
823
1408
standard.
824
1409
825
1410
Note: Will not include properties with access="write".
826
1411
"""
827
1412
properties = {}
828
for name, prop in self._get_all_dbus_properties():
1413
for name, prop in self._get_all_dbus_things("property"):
829
1414
if (interface_name
830
1415
and interface_name != prop._dbus_interface):
831
1416
# Interface non-empty but did not match
837
1422
if not hasattr(value, "variant_level"):
838
1423
properties[name] = value
839
1424
continue
840
properties[name] = type(value)(value, variant_level=
841
value.variant_level+1)
1425
properties[name] = type(value)(
1426
value, variant_level=value.variant_level + 1)
842
1427
return dbus.Dictionary(properties, signature="sv")
843
1428
1429
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1430
def PropertiesChanged(self, interface_name, changed_properties,
1431
invalidated_properties):
1432
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1433
standard.
1434
"""
1435
pass
1436
844
1437
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
845
1438
out_signature="s",
846
1439
path_keyword='object_path',
847
1440
connection_keyword='connection')
848
1441
def Introspect(self, object_path, connection):
849
"""Standard D-Bus method, overloaded to insert property tags.
1442
"""Overloading of standard D-Bus method.
1443
1444
Inserts property tags and interface annotation tags.
850
1445
"""
851
xmlstring = dbus.service.Object.Introspect(self, object_path,
852
connection)
1446
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1447
object_path,
1448
connection)
853
1449
try:
854
1450
document = xml.dom.minidom.parseString(xmlstring)
1451
855
1452
def make_tag(document, name, prop):
856
1453
e = document.createElement("property")
857
1454
e.setAttribute("name", name)
858
1455
e.setAttribute("type", prop._dbus_signature)
859
1456
e.setAttribute("access", prop._dbus_access)
860
1457
return e
1458
861
1459
for if_tag in document.getElementsByTagName("interface"):
1460
# Add property tags
862
1461
for tag in (make_tag(document, name, prop)
863
1462
for name, prop
864
in self._get_all_dbus_properties()
1463
in self._get_all_dbus_things("property")
865
1464
if prop._dbus_interface
866
1465
== if_tag.getAttribute("name")):
867
1466
if_tag.appendChild(tag)
1467
# Add annotation tags for properties
1468
for tag in if_tag.getElementsByTagName("property"):
1469
annots = dict()
1470
for name, prop in self._get_all_dbus_things(
1471
"property"):
1472
if (name == tag.getAttribute("name")
1473
and prop._dbus_interface
1474
== if_tag.getAttribute("name")):
1475
annots.update(getattr(
1476
prop, "_dbus_annotations", {}))
1477
for name, value in annots.items():
1478
ann_tag = document.createElement(
1479
"annotation")
1480
ann_tag.setAttribute("name", name)
1481
ann_tag.setAttribute("value", value)
1482
tag.appendChild(ann_tag)
868
1483
# Add the names to the return values for the
869
1484
# "org.freedesktop.DBus.Properties" methods
870
1485
if (if_tag.getAttribute("name")
885
1500
except (AttributeError, xml.dom.DOMException,
886
1501
xml.parsers.expat.ExpatError) as error:
887
1502
logger.error("Failed to override Introspection method",
888
error)
889
return xmlstring
890
891
892
def datetime_to_dbus (dt, variant_level=0):
1503
exc_info=error)
1504
return xmlstring
1505
1506
1507
try:
1508
dbus.OBJECT_MANAGER_IFACE
1509
except AttributeError:
1510
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1511
1512
1513
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1514
"""A D-Bus object with an ObjectManager.
1515
1516
Classes inheriting from this exposes the standard
1517
GetManagedObjects call and the InterfacesAdded and
1518
InterfacesRemoved signals on the standard
1519
"org.freedesktop.DBus.ObjectManager" interface.
1520
1521
Note: No signals are sent automatically; they must be sent
1522
manually.
1523
"""
1524
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1525
out_signature="a{oa{sa{sv}}}")
1526
def GetManagedObjects(self):
1527
"""This function must be overridden"""
1528
raise NotImplementedError()
1529
1530
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1531
signature="oa{sa{sv}}")
1532
def InterfacesAdded(self, object_path, interfaces_and_properties):
1533
pass
1534
1535
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1536
def InterfacesRemoved(self, object_path, interfaces):
1537
pass
1538
1539
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1540
out_signature="s",
1541
path_keyword='object_path',
1542
connection_keyword='connection')
1543
def Introspect(self, object_path, connection):
1544
"""Overloading of standard D-Bus method.
1545
1546
Override return argument name of GetManagedObjects to be
1547
"objpath_interfaces_and_properties"
1548
"""
1549
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1550
object_path,
1551
connection)
1552
try:
1553
document = xml.dom.minidom.parseString(xmlstring)
1554
1555
for if_tag in document.getElementsByTagName("interface"):
1556
# Fix argument name for the GetManagedObjects method
1557
if (if_tag.getAttribute("name")
1558
== dbus.OBJECT_MANAGER_IFACE):
1559
for cn in if_tag.getElementsByTagName("method"):
1560
if (cn.getAttribute("name")
1561
== "GetManagedObjects"):
1562
for arg in cn.getElementsByTagName("arg"):
1563
if (arg.getAttribute("direction")
1564
== "out"):
1565
arg.setAttribute(
1566
"name",
1567
"objpath_interfaces"
1568
"_and_properties")
1569
xmlstring = document.toxml("utf-8")
1570
document.unlink()
1571
except (AttributeError, xml.dom.DOMException,
1572
xml.parsers.expat.ExpatError) as error:
1573
logger.error("Failed to override Introspection method",
1574
exc_info=error)
1575
return xmlstring
1576
1577
1578
def datetime_to_dbus(dt, variant_level=0):
893
1579
"""Convert a UTC datetime.datetime() to a D-Bus type."""
894
1580
if dt is None:
895
return dbus.String("", variant_level = variant_level)
896
return dbus.String(dt.isoformat(),
897
variant_level=variant_level)
898
899
900
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
901
.__metaclass__):
902
"""Applied to an empty subclass of a D-Bus object, this metaclass
903
will add additional D-Bus attributes matching a certain pattern.
1581
return dbus.String("", variant_level=variant_level)
1582
return dbus.String(dt.isoformat(), variant_level=variant_level)
1583
1584
1585
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1586
"""A class decorator; applied to a subclass of
1587
dbus.service.Object, it will add alternate D-Bus attributes with
1588
interface names according to the "alt_interface_names" mapping.
1589
Usage:
1590
1591
@alternate_dbus_interfaces({"org.example.Interface":
1592
"net.example.AlternateInterface"})
1593
class SampleDBusObject(dbus.service.Object):
1594
@dbus.service.method("org.example.Interface")
1595
def SampleDBusMethod():
1596
pass
1597
1598
The above "SampleDBusMethod" on "SampleDBusObject" will be
1599
reachable via two interfaces: "org.example.Interface" and
1600
"net.example.AlternateInterface", the latter of which will have
1601
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1602
"true", unless "deprecate" is passed with a False value.
1603
1604
This works for methods and signals, and also for D-Bus properties
1605
(from DBusObjectWithProperties) and interfaces (from the
1606
dbus_interface_annotations decorator).
904
1607
"""
905
def __new__(mcs, name, bases, attr):
906
# Go through all the base classes which could have D-Bus
907
# methods, signals, or properties in them
908
for base in (b for b in bases
909
if issubclass(b, dbus.service.Object)):
910
# Go though all attributes of the base class
911
for attrname, attribute in inspect.getmembers(base):
1608
1609
def wrapper(cls):
1610
for orig_interface_name, alt_interface_name in (
1611
alt_interface_names.items()):
1612
attr = {}
1613
interface_names = set()
1614
# Go though all attributes of the class
1615
for attrname, attribute in inspect.getmembers(cls):
912
1616
# Ignore non-D-Bus attributes, and D-Bus attributes
913
1617
# with the wrong interface name
914
1618
if (not hasattr(attribute, "_dbus_interface")
915
or not attribute._dbus_interface
916
.startswith("se.recompile.Mandos")):
1619
or not attribute._dbus_interface.startswith(
1620
orig_interface_name)):
917
1621
continue
918
1622
# Create an alternate D-Bus interface name based on
919
1623
# the current name
920
alt_interface = (attribute._dbus_interface
921
.replace("se.recompile.Mandos",
922
"se.bsnet.fukt.Mandos"))
1624
alt_interface = attribute._dbus_interface.replace(
1625
orig_interface_name, alt_interface_name)
1626
interface_names.add(alt_interface)
923
1627
# Is this a D-Bus signal?
924
1628
if getattr(attribute, "_dbus_is_signal", False):
925
# Extract the original non-method function by
926
# black magic
927
nonmethod_func = (dict(
1629
# Extract the original non-method undecorated
1630
# function by black magic
1631
if sys.version_info.major == 2:
1632
nonmethod_func = (dict(
928
1633
zip(attribute.func_code.co_freevars,
929
attribute.__closure__))["func"]
930
.cell_contents)
1634
attribute.__closure__))
1635
["func"].cell_contents)
1636
else:
1637
nonmethod_func = (dict(
1638
zip(attribute.__code__.co_freevars,
1639
attribute.__closure__))
1640
["func"].cell_contents)
931
1641
# Create a new, but exactly alike, function
932
1642
# object, and decorate it to be a new D-Bus signal
933
1643
# with the alternate D-Bus interface name
934
new_function = (dbus.service.signal
935
(alt_interface,
936
attribute._dbus_signature)
937
(types.FunctionType(
938
nonmethod_func.func_code,
939
nonmethod_func.func_globals,
940
nonmethod_func.func_name,
941
nonmethod_func.func_defaults,
942
nonmethod_func.func_closure)))
1644
new_function = copy_function(nonmethod_func)
1645
new_function = (dbus.service.signal(
1646
alt_interface,
1647
attribute._dbus_signature)(new_function))
1648
# Copy annotations, if any
1649
try:
1650
new_function._dbus_annotations = dict(
1651
attribute._dbus_annotations)
1652
except AttributeError:
1653
pass
1654
943
1655
# Define a creator of a function to call both the
944
# old and new functions, so both the old and new
945
# signals gets sent when the function is called
1656
# original and alternate functions, so both the
1657
# original and alternate signals gets sent when
1658
# the function is called
946
1659
def fixscope(func1, func2):
947
1660
"""This function is a scope container to pass
948
1661
func1 and func2 to the "call_both" function
949
1662
outside of its arguments"""
1663
1664
@functools.wraps(func2)
950
1665
def call_both(*args, **kwargs):
951
1666
"""This function will emit two D-Bus
952
1667
signals by calling func1 and func2"""
953
1668
func1(*args, **kwargs)
954
1669
func2(*args, **kwargs)
1670
# Make wrapper function look like a D-Bus
1671
# signal
1672
for name, attr in inspect.getmembers(func2):
1673
if name.startswith("_dbus_"):
1674
setattr(call_both, name, attr)
1675
955
1676
return call_both
956
1677
# Create the "call_both" function and add it to
957
1678
# the class
958
attr[attrname] = fixscope(attribute,
959
new_function)
1679
attr[attrname] = fixscope(attribute, new_function)
960
1680
# Is this a D-Bus method?
961
1681
elif getattr(attribute, "_dbus_is_method", False):
962
1682
# Create a new, but exactly alike, function
963
1683
# object. Decorate it to be a new D-Bus method
964
1684
# with the alternate D-Bus interface name. Add it
965
1685
# to the class.
966
attr[attrname] = (dbus.service.method
967
(alt_interface,
968
attribute._dbus_in_signature,
969
attribute._dbus_out_signature)
970
(types.FunctionType
971
(attribute.func_code,
972
attribute.func_globals,
973
attribute.func_name,
974
attribute.func_defaults,
975
attribute.func_closure)))
1686
attr[attrname] = (
1687
dbus.service.method(
1688
alt_interface,
1689
attribute._dbus_in_signature,
1690
attribute._dbus_out_signature)
1691
(copy_function(attribute)))
1692
# Copy annotations, if any
1693
try:
1694
attr[attrname]._dbus_annotations = dict(
1695
attribute._dbus_annotations)
1696
except AttributeError:
1697
pass
976
1698
# Is this a D-Bus property?
977
1699
elif getattr(attribute, "_dbus_is_property", False):
978
1700
# Create a new, but exactly alike, function
979
1701
# object, and decorate it to be a new D-Bus
980
1702
# property with the alternate D-Bus interface
981
1703
# name. Add it to the class.
982
attr[attrname] = (dbus_service_property
983
(alt_interface,
984
attribute._dbus_signature,
985
attribute._dbus_access,
986
attribute
987
._dbus_get_args_options
988
["byte_arrays"])
989
(types.FunctionType
990
(attribute.func_code,
991
attribute.func_globals,
992
attribute.func_name,
993
attribute.func_defaults,
994
attribute.func_closure)))
995
return type.__new__(mcs, name, bases, attr)
996
997
1704
attr[attrname] = (dbus_service_property(
1705
alt_interface, attribute._dbus_signature,
1706
attribute._dbus_access,
1707
attribute._dbus_get_args_options
1708
["byte_arrays"])
1709
(copy_function(attribute)))
1710
# Copy annotations, if any
1711
try:
1712
attr[attrname]._dbus_annotations = dict(
1713
attribute._dbus_annotations)
1714
except AttributeError:
1715
pass
1716
# Is this a D-Bus interface?
1717
elif getattr(attribute, "_dbus_is_interface", False):
1718
# Create a new, but exactly alike, function
1719
# object. Decorate it to be a new D-Bus interface
1720
# with the alternate D-Bus interface name. Add it
1721
# to the class.
1722
attr[attrname] = (
1723
dbus_interface_annotations(alt_interface)
1724
(copy_function(attribute)))
1725
if deprecate:
1726
# Deprecate all alternate interfaces
1727
iname = "_AlternateDBusNames_interface_annotation{}"
1728
for interface_name in interface_names:
1729
1730
@dbus_interface_annotations(interface_name)
1731
def func(self):
1732
return {"org.freedesktop.DBus.Deprecated":
1733
"true"}
1734
# Find an unused name
1735
for aname in (iname.format(i)
1736
for i in itertools.count()):
1737
if aname not in attr:
1738
attr[aname] = func
1739
break
1740
if interface_names:
1741
# Replace the class with a new subclass of it with
1742
# methods, signals, etc. as created above.
1743
if sys.version_info.major == 2:
1744
cls = type(b"{}Alternate".format(cls.__name__),
1745
(cls, ), attr)
1746
else:
1747
cls = type("{}Alternate".format(cls.__name__),
1748
(cls, ), attr)
1749
return cls
1750
1751
return wrapper
1752
1753
1754
@alternate_dbus_interfaces({"se.recompile.Mandos":
1755
"se.bsnet.fukt.Mandos"})
998
1756
class ClientDBus(Client, DBusObjectWithProperties):
999
1757
"""A Client class using D-Bus
1000
1758
1001
1759
Attributes:
1002
1760
dbus_object_path: dbus.ObjectPath
1003
1761
bus: dbus.SystemBus()
1004
1762
"""
1005
1763
1006
1764
runtime_expansions = (Client.runtime_expansions
1007
+ ("dbus_object_path",))
1008
1765
+ ("dbus_object_path", ))
1766
1767
_interface = "se.recompile.Mandos.Client"
1768
1009
1769
# dbus.service.Object doesn't use super(), so we can't either.
1010
1011
def __init__(self, bus = None, *args, **kwargs):
1770
1771
def __init__(self, bus=None, *args, **kwargs):
1012
1772
self.bus = bus
1013
1773
Client.__init__(self, *args, **kwargs)
1014
1015
self._approvals_pending = 0
1016
1774
# Only now, when this client is initialized, can it show up on
1017
1775
# the D-Bus
1018
client_object_name = unicode(self.name).translate(
1776
client_object_name = str(self.name).translate(
1019
1777
{ord("."): ord("_"),
1020
1778
ord("-"): ord("_")})
1021
self.dbus_object_path = (dbus.ObjectPath
1022
("/clients/" + client_object_name))
1779
self.dbus_object_path = dbus.ObjectPath(
1780
"/clients/" + client_object_name)
1023
1781
DBusObjectWithProperties.__init__(self, self.bus,
1024
1782
self.dbus_object_path)
1025
1026
def notifychangeproperty(transform_func,
1027
dbus_name, type_func=lambda x: x,
1028
variant_level=1):
1783
1784
def notifychangeproperty(transform_func, dbus_name,
1785
type_func=lambda x: x,
1786
variant_level=1,
1787
invalidate_only=False,
1788
_interface=_interface):
1029
1789
""" Modify a variable so that it's a property which announces
1030
1790
its changes to DBus.
1031
1791
1032
1792
transform_fun: Function that takes a value and a variant_level
1033
1793
and transforms it to a D-Bus type.
1034
1794
dbus_name: D-Bus name of the variable
1036
1796
to the D-Bus. Default: no transform
1037
1797
variant_level: D-Bus variant level. Default: 1
1038
1798
"""
1039
attrname = "_{0}".format(dbus_name)
1799
attrname = "_{}".format(dbus_name)
1800
1040
1801
def setter(self, value):
1041
1802
if hasattr(self, "dbus_object_path"):
1042
1803
if (not hasattr(self, attrname) or
1043
1804
type_func(getattr(self, attrname, None))
1044
1805
!= type_func(value)):
1045
dbus_value = transform_func(type_func(value),
1046
variant_level
1047
=variant_level)
1048
self.PropertyChanged(dbus.String(dbus_name),
1049
dbus_value)
1806
if invalidate_only:
1807
self.PropertiesChanged(
1808
_interface, dbus.Dictionary(),
1809
dbus.Array((dbus_name, )))
1810
else:
1811
dbus_value = transform_func(
1812
type_func(value),
1813
variant_level=variant_level)
1814
self.PropertyChanged(dbus.String(dbus_name),
1815
dbus_value)
1816
self.PropertiesChanged(
1817
_interface,
1818
dbus.Dictionary({dbus.String(dbus_name):
1819
dbus_value}),
1820
dbus.Array())
1050
1821
setattr(self, attrname, value)
1051
1822
1052
1823
return property(lambda self: getattr(self, attrname), setter)
1053
1054
1824
1055
1825
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1056
1826
approvals_pending = notifychangeproperty(dbus.Boolean,
1057
1827
"ApprovalPending",
1058
type_func = bool)
1828
type_func=bool)
1059
1829
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1060
1830
last_enabled = notifychangeproperty(datetime_to_dbus,
1061
1831
"LastEnabled")
1062
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1063
type_func = lambda checker:
1064
checker is not None)
1832
checker = notifychangeproperty(
1833
dbus.Boolean, "CheckerRunning",
1834
type_func=lambda checker: checker is not None)
1065
1835
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1066
1836
"LastCheckedOK")
1837
last_checker_status = notifychangeproperty(dbus.Int16,
1838
"LastCheckerStatus")
1067
1839
last_approval_request = notifychangeproperty(
1068
1840
datetime_to_dbus, "LastApprovalRequest")
1069
1841
approved_by_default = notifychangeproperty(dbus.Boolean,
1070
1842
"ApprovedByDefault")
1071
approval_delay = notifychangeproperty(dbus.UInt16,
1072
"ApprovalDelay",
1073
type_func =
1074
_timedelta_to_milliseconds)
1843
approval_delay = notifychangeproperty(
1844
dbus.UInt64, "ApprovalDelay",
1845
type_func=lambda td: td.total_seconds() * 1000)
1075
1846
approval_duration = notifychangeproperty(
1076
dbus.UInt16, "ApprovalDuration",
1077
type_func = _timedelta_to_milliseconds)
1847
dbus.UInt64, "ApprovalDuration",
1848
type_func=lambda td: td.total_seconds() * 1000)
1078
1849
host = notifychangeproperty(dbus.String, "Host")
1079
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1080
type_func =
1081
_timedelta_to_milliseconds)
1850
timeout = notifychangeproperty(
1851
dbus.UInt64, "Timeout",
1852
type_func=lambda td: td.total_seconds() * 1000)
1082
1853
extended_timeout = notifychangeproperty(
1083
dbus.UInt16, "ExtendedTimeout",
1084
type_func = _timedelta_to_milliseconds)
1085
interval = notifychangeproperty(dbus.UInt16,
1086
"Interval",
1087
type_func =
1088
_timedelta_to_milliseconds)
1854
dbus.UInt64, "ExtendedTimeout",
1855
type_func=lambda td: td.total_seconds() * 1000)
1856
interval = notifychangeproperty(
1857
dbus.UInt64, "Interval",
1858
type_func=lambda td: td.total_seconds() * 1000)
1089
1859
checker_command = notifychangeproperty(dbus.String, "Checker")
1090
1860
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1861
invalidate_only=True)
1862
1091
1863
del notifychangeproperty
1092
1864
1093
1865
def __del__(self, *args, **kwargs):
1094
1866
try:
1095
1867
self.remove_from_connection()
1098
1870
if hasattr(DBusObjectWithProperties, "__del__"):
1099
1871
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1100
1872
Client.__del__(self, *args, **kwargs)
1101
1102
def checker_callback(self, pid, condition, command,
1103
*args, **kwargs):
1104
self.checker_callback_tag = None
1105
self.checker = None
1106
if os.WIFEXITED(condition):
1107
exitstatus = os.WEXITSTATUS(condition)
1873
1874
def checker_callback(self, source, condition,
1875
connection, command, *args, **kwargs):
1876
ret = Client.checker_callback(self, source, condition,
1877
connection, command, *args,
1878
**kwargs)
1879
exitstatus = self.last_checker_status
1880
if exitstatus >= 0:
1108
1881
# Emit D-Bus signal
1109
1882
self.CheckerCompleted(dbus.Int16(exitstatus),
1110
dbus.Int64(condition),
1883
# This is specific to GNU libC
1884
dbus.Int64(exitstatus << 8),
1111
1885
dbus.String(command))
1112
1886
else:
1113
1887
# Emit D-Bus signal
1114
1888
self.CheckerCompleted(dbus.Int16(-1),
1115
dbus.Int64(condition),
1889
dbus.Int64(
1890
# This is specific to GNU libC
1891
(exitstatus << 8)
1892
| self.last_checker_signal),
1116
1893
dbus.String(command))
1117
1118
return Client.checker_callback(self, pid, condition, command,
1119
*args, **kwargs)
1120
1894
return ret
1895
1121
1896
def start_checker(self, *args, **kwargs):
1122
old_checker = self.checker
1123
if self.checker is not None:
1124
old_checker_pid = self.checker.pid
1125
else:
1126
old_checker_pid = None
1897
old_checker_pid = getattr(self.checker, "pid", None)
1127
1898
r = Client.start_checker(self, *args, **kwargs)
1128
1899
# Only if new checker process was started
1129
1900
if (self.checker is not None
1131
1902
# Emit D-Bus signal
1132
1903
self.CheckerStarted(self.current_checker_command)
1133
1904
return r
1134
1905
1135
1906
def _reset_approved(self):
1136
self._approved = None
1907
self.approved = None
1137
1908
return False
1138
1909
1139
1910
def approve(self, value=True):
1911
self.approved = value
1912
GLib.timeout_add(int(self.approval_duration.total_seconds()
1913
* 1000), self._reset_approved)
1140
1914
self.send_changedstate()
1141
self._approved = value
1142
gobject.timeout_add(_timedelta_to_milliseconds
1143
(self.approval_duration),
1144
self._reset_approved)
1145
1146
1147
## D-Bus methods, signals & properties
1148
_interface = "se.recompile.Mandos.Client"
1149
1150
## Signals
1151
1915
1916
# D-Bus methods, signals & properties
1917
1918
# Interfaces
1919
1920
# Signals
1921
1152
1922
# CheckerCompleted - signal
1153
1923
@dbus.service.signal(_interface, signature="nxs")
1154
1924
def CheckerCompleted(self, exitcode, waitstatus, command):
1155
1925
"D-Bus signal"
1156
1926
pass
1157
1927
1158
1928
# CheckerStarted - signal
1159
1929
@dbus.service.signal(_interface, signature="s")
1160
1930
def CheckerStarted(self, command):
1161
1931
"D-Bus signal"
1162
1932
pass
1163
1933
1164
1934
# PropertyChanged - signal
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1165
1936
@dbus.service.signal(_interface, signature="sv")
1166
1937
def PropertyChanged(self, property, value):
1167
1938
"D-Bus signal"
1168
1939
pass
1169
1940
1170
1941
# GotSecret - signal
1171
1942
@dbus.service.signal(_interface)
1172
1943
def GotSecret(self):
1175
1946
server to mandos-client
1176
1947
"""
1177
1948
pass
1178
1949
1179
1950
# Rejected - signal
1180
1951
@dbus.service.signal(_interface, signature="s")
1181
1952
def Rejected(self, reason):
1182
1953
"D-Bus signal"
1183
1954
pass
1184
1955
1185
1956
# NeedApproval - signal
1186
1957
@dbus.service.signal(_interface, signature="tb")
1187
1958
def NeedApproval(self, timeout, default):
1188
1959
"D-Bus signal"
1189
1960
return self.need_approval()
1190
1191
# NeRwequest - signal
1192
@dbus.service.signal(_interface, signature="s")
1193
def NewRequest(self, ip):
1194
"""D-Bus signal
1195
Is sent after a client request a password.
1196
"""
1197
pass
1198
1199
## Methods
1200
1961
1962
# Methods
1963
1201
1964
# Approve - method
1202
1965
@dbus.service.method(_interface, in_signature="b")
1203
1966
def Approve(self, value):
1204
1967
self.approve(value)
1205
1968
1206
1969
# CheckedOK - method
1207
1970
@dbus.service.method(_interface)
1208
1971
def CheckedOK(self):
1209
1972
self.checked_ok()
1210
1973
1211
1974
# Enable - method
1975
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1212
1976
@dbus.service.method(_interface)
1213
1977
def Enable(self):
1214
1978
"D-Bus method"
1215
1979
self.enable()
1216
1980
1217
1981
# StartChecker - method
1982
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1218
1983
@dbus.service.method(_interface)
1219
1984
def StartChecker(self):
1220
1985
"D-Bus method"
1221
1986
self.start_checker()
1222
1987
1223
1988
# Disable - method
1989
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1224
1990
@dbus.service.method(_interface)
1225
1991
def Disable(self):
1226
1992
"D-Bus method"
1227
1993
self.disable()
1228
1994
1229
1995
# StopChecker - method
1996
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1230
1997
@dbus.service.method(_interface)
1231
1998
def StopChecker(self):
1232
1999
self.stop_checker()
1233
1234
## Properties
1235
2000
2001
# Properties
2002
1236
2003
# ApprovalPending - property
1237
2004
@dbus_service_property(_interface, signature="b", access="read")
1238
2005
def ApprovalPending_dbus_property(self):
1239
2006
return dbus.Boolean(bool(self.approvals_pending))
1240
2007
1241
2008
# ApprovedByDefault - property
1242
@dbus_service_property(_interface, signature="b",
2009
@dbus_service_property(_interface,
2010
signature="b",
1243
2011
access="readwrite")
1244
2012
def ApprovedByDefault_dbus_property(self, value=None):
1245
2013
if value is None: # get
1246
2014
return dbus.Boolean(self.approved_by_default)
1247
2015
self.approved_by_default = bool(value)
1248
2016
1249
2017
# ApprovalDelay - property
1250
@dbus_service_property(_interface, signature="t",
2018
@dbus_service_property(_interface,
2019
signature="t",
1251
2020
access="readwrite")
1252
2021
def ApprovalDelay_dbus_property(self, value=None):
1253
2022
if value is None: # get
1254
return dbus.UInt64(self.approval_delay_milliseconds())
2023
return dbus.UInt64(self.approval_delay.total_seconds()
2024
* 1000)
1255
2025
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1256
2026
1257
2027
# ApprovalDuration - property
1258
@dbus_service_property(_interface, signature="t",
2028
@dbus_service_property(_interface,
2029
signature="t",
1259
2030
access="readwrite")
1260
2031
def ApprovalDuration_dbus_property(self, value=None):
1261
2032
if value is None: # get
1262
return dbus.UInt64(_timedelta_to_milliseconds(
1263
self.approval_duration))
2033
return dbus.UInt64(self.approval_duration.total_seconds()
2034
* 1000)
1264
2035
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1265
2036
1266
2037
# Name - property
2038
@dbus_annotations(
2039
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1267
2040
@dbus_service_property(_interface, signature="s", access="read")
1268
2041
def Name_dbus_property(self):
1269
2042
return dbus.String(self.name)
1270
2043
2044
# KeyID - property
2045
@dbus_annotations(
2046
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2047
@dbus_service_property(_interface, signature="s", access="read")
2048
def KeyID_dbus_property(self):
2049
return dbus.String(self.key_id)
2050
1271
2051
# Fingerprint - property
2052
@dbus_annotations(
2053
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1272
2054
@dbus_service_property(_interface, signature="s", access="read")
1273
2055
def Fingerprint_dbus_property(self):
1274
2056
return dbus.String(self.fingerprint)
1275
2057
1276
2058
# Host - property
1277
@dbus_service_property(_interface, signature="s",
2059
@dbus_service_property(_interface,
2060
signature="s",
1278
2061
access="readwrite")
1279
2062
def Host_dbus_property(self, value=None):
1280
2063
if value is None: # get
1281
2064
return dbus.String(self.host)
1282
self.host = value
1283
2065
self.host = str(value)
2066
1284
2067
# Created - property
2068
@dbus_annotations(
2069
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1285
2070
@dbus_service_property(_interface, signature="s", access="read")
1286
2071
def Created_dbus_property(self):
1287
2072
return datetime_to_dbus(self.created)
1288
2073
1289
2074
# LastEnabled - property
1290
2075
@dbus_service_property(_interface, signature="s", access="read")
1291
2076
def LastEnabled_dbus_property(self):
1292
2077
return datetime_to_dbus(self.last_enabled)
1293
2078
1294
2079
# Enabled - property
1295
@dbus_service_property(_interface, signature="b",
2080
@dbus_service_property(_interface,
2081
signature="b",
1296
2082
access="readwrite")
1297
2083
def Enabled_dbus_property(self, value=None):
1298
2084
if value is None: # get
1301
2087
self.enable()
1302
2088
else:
1303
2089
self.disable()
1304
2090
1305
2091
# LastCheckedOK - property
1306
@dbus_service_property(_interface, signature="s",
2092
@dbus_service_property(_interface,
2093
signature="s",
1307
2094
access="readwrite")
1308
2095
def LastCheckedOK_dbus_property(self, value=None):
1309
2096
if value is not None:
1310
2097
self.checked_ok()
1311
2098
return
1312
2099
return datetime_to_dbus(self.last_checked_ok)
1313
2100
2101
# LastCheckerStatus - property
2102
@dbus_service_property(_interface, signature="n", access="read")
2103
def LastCheckerStatus_dbus_property(self):
2104
return dbus.Int16(self.last_checker_status)
2105
1314
2106
# Expires - property
1315
2107
@dbus_service_property(_interface, signature="s", access="read")
1316
2108
def Expires_dbus_property(self):
1317
2109
return datetime_to_dbus(self.expires)
1318
2110
1319
2111
# LastApprovalRequest - property
1320
2112
@dbus_service_property(_interface, signature="s", access="read")
1321
2113
def LastApprovalRequest_dbus_property(self):
1322
2114
return datetime_to_dbus(self.last_approval_request)
1323
2115
1324
2116
# Timeout - property
1325
@dbus_service_property(_interface, signature="t",
2117
@dbus_service_property(_interface,
2118
signature="t",
1326
2119
access="readwrite")
1327
2120
def Timeout_dbus_property(self, value=None):
1328
2121
if value is None: # get
1329
return dbus.UInt64(self.timeout_milliseconds())
2122
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2123
old_timeout = self.timeout
1330
2124
self.timeout = datetime.timedelta(0, 0, 0, value)
1331
if getattr(self, "disable_initiator_tag", None) is None:
1332
return
1333
# Reschedule timeout
1334
gobject.source_remove(self.disable_initiator_tag)
1335
self.disable_initiator_tag = None
1336
self.expires = None
1337
time_to_die = _timedelta_to_milliseconds((self
1338
.last_checked_ok
1339
+ self.timeout)
1340
- datetime.datetime
1341
.utcnow())
1342
if time_to_die <= 0:
1343
# The timeout has passed
1344
self.disable()
1345
else:
1346
self.expires = (datetime.datetime.utcnow()
1347
+ datetime.timedelta(milliseconds =
1348
time_to_die))
1349
self.disable_initiator_tag = (gobject.timeout_add
1350
(time_to_die, self.disable))
1351
2125
# Reschedule disabling
2126
if self.enabled:
2127
now = datetime.datetime.utcnow()
2128
self.expires += self.timeout - old_timeout
2129
if self.expires <= now:
2130
# The timeout has passed
2131
self.disable()
2132
else:
2133
if (getattr(self, "disable_initiator_tag", None)
2134
is None):
2135
return
2136
GLib.source_remove(self.disable_initiator_tag)
2137
self.disable_initiator_tag = GLib.timeout_add(
2138
int((self.expires - now).total_seconds() * 1000),
2139
self.disable)
2140
1352
2141
# ExtendedTimeout - property
1353
@dbus_service_property(_interface, signature="t",
2142
@dbus_service_property(_interface,
2143
signature="t",
1354
2144
access="readwrite")
1355
2145
def ExtendedTimeout_dbus_property(self, value=None):
1356
2146
if value is None: # get
1357
return dbus.UInt64(self.extended_timeout_milliseconds())
2147
return dbus.UInt64(self.extended_timeout.total_seconds()
2148
* 1000)
1358
2149
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1359
2150
1360
2151
# Interval - property
1361
@dbus_service_property(_interface, signature="t",
2152
@dbus_service_property(_interface,
2153
signature="t",
1362
2154
access="readwrite")
1363
2155
def Interval_dbus_property(self, value=None):
1364
2156
if value is None: # get
1365
return dbus.UInt64(self.interval_milliseconds())
2157
return dbus.UInt64(self.interval.total_seconds() * 1000)
1366
2158
self.interval = datetime.timedelta(0, 0, 0, value)
1367
2159
if getattr(self, "checker_initiator_tag", None) is None:
1368
2160
return
1369
2161
if self.enabled:
1370
2162
# Reschedule checker run
1371
gobject.source_remove(self.checker_initiator_tag)
1372
self.checker_initiator_tag = (gobject.timeout_add
1373
(value, self.start_checker))
1374
self.start_checker() # Start one now, too
1375
2163
GLib.source_remove(self.checker_initiator_tag)
2164
self.checker_initiator_tag = GLib.timeout_add(
2165
value, self.start_checker)
2166
self.start_checker() # Start one now, too
2167
1376
2168
# Checker - property
1377
@dbus_service_property(_interface, signature="s",
2169
@dbus_service_property(_interface,
2170
signature="s",
1378
2171
access="readwrite")
1379
2172
def Checker_dbus_property(self, value=None):
1380
2173
if value is None: # get
1381
2174
return dbus.String(self.checker_command)
1382
self.checker_command = value
1383
2175
self.checker_command = str(value)
2176
1384
2177
# CheckerRunning - property
1385
@dbus_service_property(_interface, signature="b",
2178
@dbus_service_property(_interface,
2179
signature="b",
1386
2180
access="readwrite")
1387
2181
def CheckerRunning_dbus_property(self, value=None):
1388
2182
if value is None: # get
1391
2185
self.start_checker()
1392
2186
else:
1393
2187
self.stop_checker()
1394
2188
1395
2189
# ObjectPath - property
2190
@dbus_annotations(
2191
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2192
"org.freedesktop.DBus.Deprecated": "true"})
1396
2193
@dbus_service_property(_interface, signature="o", access="read")
1397
2194
def ObjectPath_dbus_property(self):
1398
return self.dbus_object_path # is already a dbus.ObjectPath
1399
2195
return self.dbus_object_path # is already a dbus.ObjectPath
2196
1400
2197
# Secret = property
1401
@dbus_service_property(_interface, signature="ay",
1402
access="write", byte_arrays=True)
2198
@dbus_annotations(
2199
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2200
"invalidates"})
2201
@dbus_service_property(_interface,
2202
signature="ay",
2203
access="write",
2204
byte_arrays=True)
1403
2205
def Secret_dbus_property(self, value):
1404
self.secret = str(value)
1405
2206
self.secret = bytes(value)
2207
1406
2208
del _interface
1407
2209
1408
2210
1409
2211
class ProxyClient(object):
1410
def __init__(self, child_pipe, fpr, address):
2212
def __init__(self, child_pipe, key_id, fpr, address):
1411
2213
self._pipe = child_pipe
1412
self._pipe.send(('init', fpr, address))
2214
self._pipe.send(('init', key_id, fpr, address))
1413
2215
if not self._pipe.recv():
1414
raise KeyError()
1415
2216
raise KeyError(key_id or fpr)
2217
1416
2218
def __getattribute__(self, name):
1417
if(name == '_pipe'):
2219
if name == '_pipe':
1418
2220
return super(ProxyClient, self).__getattribute__(name)
1419
2221
self._pipe.send(('getattr', name))
1420
2222
data = self._pipe.recv()
1421
2223
if data[0] == 'data':
1422
2224
return data[1]
1423
2225
if data[0] == 'function':
2226
1424
2227
def func(*args, **kwargs):
1425
2228
self._pipe.send(('funcall', name, args, kwargs))
1426
2229
return self._pipe.recv()[1]
2230
1427
2231
return func
1428
2232
1429
2233
def __setattr__(self, name, value):
1430
if(name == '_pipe'):
2234
if name == '_pipe':
1431
2235
return super(ProxyClient, self).__setattr__(name, value)
1432
2236
self._pipe.send(('setattr', name, value))
1433
2237
1434
2238
1435
class ClientDBusTransitional(ClientDBus):
1436
__metaclass__ = AlternateDBusNamesMetaclass
1437
1438
1439
2239
class ClientHandler(socketserver.BaseRequestHandler, object):
1440
2240
"""A class to handle client connections.
1441
2241
1442
2242
Instantiated once for each connection to handle it.
1443
2243
Note: This will run in its own forked process."""
1444
2244
1445
2245
def handle(self):
1446
2246
with contextlib.closing(self.server.child_pipe) as child_pipe:
1447
2247
logger.info("TCP connection from: %s",
1448
unicode(self.client_address))
2248
str(self.client_address))
1449
2249
logger.debug("Pipe FD: %d",
1450
2250
self.server.child_pipe.fileno())
1451
1452
session = (gnutls.connection
1453
.ClientSession(self.request,
1454
gnutls.connection
1455
.X509Credentials()))
1456
1457
# Note: gnutls.connection.X509Credentials is really a
1458
# generic GnuTLS certificate credentials object so long as
1459
# no X.509 keys are added to it. Therefore, we can use it
1460
# here despite using OpenPGP certificates.
1461
1462
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1463
# "+AES-256-CBC", "+SHA1",
1464
# "+COMP-NULL", "+CTYPE-OPENPGP",
1465
# "+DHE-DSS"))
2251
2252
session = gnutls.ClientSession(self.request)
2253
2254
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2255
# "+AES-256-CBC", "+SHA1",
2256
# "+COMP-NULL", "+CTYPE-OPENPGP",
2257
# "+DHE-DSS"))
1466
2258
# Use a fallback default, since this MUST be set.
1467
2259
priority = self.server.gnutls_priority
1468
2260
if priority is None:
1469
2261
priority = "NORMAL"
1470
(gnutls.library.functions
1471
.gnutls_priority_set_direct(session._c_object,
1472
priority, None))
1473
2262
gnutls.priority_set_direct(session._c_object,
2263
priority.encode("utf-8"),
2264
None)
2265
1474
2266
# Start communication using the Mandos protocol
1475
2267
# Get protocol number
1476
2268
line = self.request.makefile().readline()
1477
2269
logger.debug("Protocol version: %r", line)
1478
2270
try:
1479
2271
if int(line.strip().split()[0]) > 1:
1480
raise RuntimeError
2272
raise RuntimeError(line)
1481
2273
except (ValueError, IndexError, RuntimeError) as error:
1482
2274
logger.error("Unknown protocol version: %s", error)
1483
2275
return
1484
2276
1485
2277
# Start GnuTLS connection
1486
2278
try:
1487
2279
session.handshake()
1488
except gnutls.errors.GNUTLSError as error:
2280
except gnutls.Error as error:
1489
2281
logger.warning("Handshake failed: %s", error)
1490
2282
# Do not run session.bye() here: the session is not
1491
2283
# established. Just abandon the request.
1492
2284
return
1493
2285
logger.debug("Handshake succeeded")
1494
2286
1495
2287
approval_required = False
1496
2288
try:
1497
try:
1498
fpr = self.fingerprint(self.peer_certificate
1499
(session))
1500
except (TypeError,
1501
gnutls.errors.GNUTLSError) as error:
1502
logger.warning("Bad certificate: %s", error)
1503
return
1504
logger.debug("Fingerprint: %s", fpr)
1505
if self.server.use_dbus:
1506
# Emit D-Bus signal
1507
client.NewRequest(str(self.client_address))
1508
1509
try:
1510
client = ProxyClient(child_pipe, fpr,
2289
if gnutls.has_rawpk:
2290
fpr = ""
2291
try:
2292
key_id = self.key_id(
2293
self.peer_certificate(session))
2294
except (TypeError, gnutls.Error) as error:
2295
logger.warning("Bad certificate: %s", error)
2296
return
2297
logger.debug("Key ID: %s", key_id)
2298
2299
else:
2300
key_id = ""
2301
try:
2302
fpr = self.fingerprint(
2303
self.peer_certificate(session))
2304
except (TypeError, gnutls.Error) as error:
2305
logger.warning("Bad certificate: %s", error)
2306
return
2307
logger.debug("Fingerprint: %s", fpr)
2308
2309
try:
2310
client = ProxyClient(child_pipe, key_id, fpr,
1511
2311
self.client_address)
1512
2312
except KeyError:
1513
2313
return
1514
2314
1515
2315
if client.approval_delay:
1516
2316
delay = client.approval_delay
1517
2317
client.approvals_pending += 1
1518
2318
approval_required = True
1519
2319
1520
2320
while True:
1521
2321
if not client.enabled:
1522
2322
logger.info("Client %s is disabled",
1523
client.name)
2323
client.name)
1524
2324
if self.server.use_dbus:
1525
2325
# Emit D-Bus signal
1526
2326
client.Rejected("Disabled")
1527
2327
return
1528
1529
if client._approved or not client.approval_delay:
1530
#We are approved or approval is disabled
2328
2329
if client.approved or not client.approval_delay:
2330
# We are approved or approval is disabled
1531
2331
break
1532
elif client._approved is None:
2332
elif client.approved is None:
1533
2333
logger.info("Client %s needs approval",
1534
2334
client.name)
1535
2335
if self.server.use_dbus:
1536
2336
# Emit D-Bus signal
1537
2337
client.NeedApproval(
1538
client.approval_delay_milliseconds(),
1539
client.approved_by_default)
2338
client.approval_delay.total_seconds()
2339
* 1000, client.approved_by_default)
1540
2340
else:
1541
2341
logger.warning("Client %s was not approved",
1542
2342
client.name)
1544
2344
# Emit D-Bus signal
1545
2345
client.Rejected("Denied")
1546
2346
return
1547
1548
#wait until timeout or approved
2347
2348
# wait until timeout or approved
1549
2349
time = datetime.datetime.now()
1550
2350
client.changedstate.acquire()
1551
(client.changedstate.wait
1552
(float(client._timedelta_to_milliseconds(delay)
1553
/ 1000)))
2351
client.changedstate.wait(delay.total_seconds())
1554
2352
client.changedstate.release()
1555
2353
time2 = datetime.datetime.now()
1556
2354
if (time2 - time) >= delay:
1566
2364
break
1567
2365
else:
1568
2366
delay -= time2 - time
1569
1570
sent_size = 0
1571
while sent_size < len(client.secret):
1572
try:
1573
sent = session.send(client.secret[sent_size:])
1574
except gnutls.errors.GNUTLSError as error:
1575
logger.warning("gnutls send failed")
1576
return
1577
logger.debug("Sent: %d, remaining: %d",
1578
sent, len(client.secret)
1579
- (sent_size + sent))
1580
sent_size += sent
1581
2367
2368
try:
2369
session.send(client.secret)
2370
except gnutls.Error as error:
2371
logger.warning("gnutls send failed",
2372
exc_info=error)
2373
return
2374
1582
2375
logger.info("Sending secret to %s", client.name)
1583
2376
# bump the timeout using extended_timeout
1584
client.checked_ok(client.extended_timeout)
2377
client.bump_timeout(client.extended_timeout)
1585
2378
if self.server.use_dbus:
1586
2379
# Emit D-Bus signal
1587
2380
client.GotSecret()
1588
2381
1589
2382
finally:
1590
2383
if approval_required:
1591
2384
client.approvals_pending -= 1
1592
2385
try:
1593
2386
session.bye()
1594
except gnutls.errors.GNUTLSError as error:
1595
logger.warning("GnuTLS bye failed")
1596
2387
except gnutls.Error as error:
2388
logger.warning("GnuTLS bye failed",
2389
exc_info=error)
2390
1597
2391
@staticmethod
1598
2392
def peer_certificate(session):
1599
"Return the peer's OpenPGP certificate as a bytestring"
1600
# If not an OpenPGP certificate...
1601
if (gnutls.library.functions
1602
.gnutls_certificate_type_get(session._c_object)
1603
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1604
# ...do the normal thing
1605
return session.peer_certificate
2393
"Return the peer's certificate as a bytestring"
2394
try:
2395
cert_type = gnutls.certificate_type_get2(session._c_object,
2396
gnutls.CTYPE_PEERS)
2397
except AttributeError:
2398
cert_type = gnutls.certificate_type_get(session._c_object)
2399
if gnutls.has_rawpk:
2400
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2401
else:
2402
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2403
# If not a valid certificate type...
2404
if cert_type not in valid_cert_types:
2405
logger.info("Cert type %r not in %r", cert_type,
2406
valid_cert_types)
2407
# ...return invalid data
2408
return b""
1606
2409
list_size = ctypes.c_uint(1)
1607
cert_list = (gnutls.library.functions
1608
.gnutls_certificate_get_peers
2410
cert_list = (gnutls.certificate_get_peers
1609
2411
(session._c_object, ctypes.byref(list_size)))
1610
2412
if not bool(cert_list) and list_size.value != 0:
1611
raise gnutls.errors.GNUTLSError("error getting peer"
1612
" certificate")
2413
raise gnutls.Error("error getting peer certificate")
1613
2414
if list_size.value == 0:
1614
2415
return None
1615
2416
cert = cert_list[0]
1616
2417
return ctypes.string_at(cert.data, cert.size)
1617
2418
2419
@staticmethod
2420
def key_id(certificate):
2421
"Convert a certificate bytestring to a hexdigit key ID"
2422
# New GnuTLS "datum" with the public key
2423
datum = gnutls.datum_t(
2424
ctypes.cast(ctypes.c_char_p(certificate),
2425
ctypes.POINTER(ctypes.c_ubyte)),
2426
ctypes.c_uint(len(certificate)))
2427
# XXX all these need to be created in the gnutls "module"
2428
# New empty GnuTLS certificate
2429
pubkey = gnutls.pubkey_t()
2430
gnutls.pubkey_init(ctypes.byref(pubkey))
2431
# Import the raw public key into the certificate
2432
gnutls.pubkey_import(pubkey,
2433
ctypes.byref(datum),
2434
gnutls.X509_FMT_DER)
2435
# New buffer for the key ID
2436
buf = ctypes.create_string_buffer(32)
2437
buf_len = ctypes.c_size_t(len(buf))
2438
# Get the key ID from the raw public key into the buffer
2439
gnutls.pubkey_get_key_id(pubkey,
2440
gnutls.KEYID_USE_SHA256,
2441
ctypes.cast(ctypes.byref(buf),
2442
ctypes.POINTER(ctypes.c_ubyte)),
2443
ctypes.byref(buf_len))
2444
# Deinit the certificate
2445
gnutls.pubkey_deinit(pubkey)
2446
2447
# Convert the buffer to a Python bytestring
2448
key_id = ctypes.string_at(buf, buf_len.value)
2449
# Convert the bytestring to hexadecimal notation
2450
hex_key_id = binascii.hexlify(key_id).upper()
2451
return hex_key_id
2452
1618
2453
@staticmethod
1619
2454
def fingerprint(openpgp):
1620
2455
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1621
2456
# New GnuTLS "datum" with the OpenPGP public key
1622
datum = (gnutls.library.types
1623
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1624
ctypes.POINTER
1625
(ctypes.c_ubyte)),
1626
ctypes.c_uint(len(openpgp))))
2457
datum = gnutls.datum_t(
2458
ctypes.cast(ctypes.c_char_p(openpgp),
2459
ctypes.POINTER(ctypes.c_ubyte)),
2460
ctypes.c_uint(len(openpgp)))
1627
2461
# New empty GnuTLS certificate
1628
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1629
(gnutls.library.functions
1630
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2462
crt = gnutls.openpgp_crt_t()
2463
gnutls.openpgp_crt_init(ctypes.byref(crt))
1631
2464
# Import the OpenPGP public key into the certificate
1632
(gnutls.library.functions
1633
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1634
gnutls.library.constants
1635
.GNUTLS_OPENPGP_FMT_RAW))
2465
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2466
gnutls.OPENPGP_FMT_RAW)
1636
2467
# Verify the self signature in the key
1637
2468
crtverify = ctypes.c_uint()
1638
(gnutls.library.functions
1639
.gnutls_openpgp_crt_verify_self(crt, 0,
1640
ctypes.byref(crtverify)))
2469
gnutls.openpgp_crt_verify_self(crt, 0,
2470
ctypes.byref(crtverify))
1641
2471
if crtverify.value != 0:
1642
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1643
raise (gnutls.errors.CertificateSecurityError
1644
("Verify failed"))
2472
gnutls.openpgp_crt_deinit(crt)
2473
raise gnutls.CertificateSecurityError(code
2474
=crtverify.value)
1645
2475
# New buffer for the fingerprint
1646
2476
buf = ctypes.create_string_buffer(20)
1647
2477
buf_len = ctypes.c_size_t()
1648
2478
# Get the fingerprint from the certificate into the buffer
1649
(gnutls.library.functions
1650
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1651
ctypes.byref(buf_len)))
2479
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2480
ctypes.byref(buf_len))
1652
2481
# Deinit the certificate
1653
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2482
gnutls.openpgp_crt_deinit(crt)
1654
2483
# Convert the buffer to a Python bytestring
1655
2484
fpr = ctypes.string_at(buf, buf_len.value)
1656
2485
# Convert the bytestring to hexadecimal notation
1660
2489
1661
2490
class MultiprocessingMixIn(object):
1662
2491
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2492
1663
2493
def sub_process_main(self, request, address):
1664
2494
try:
1665
2495
self.finish_request(request, address)
1666
except:
2496
except Exception:
1667
2497
self.handle_error(request, address)
1668
2498
self.close_request(request)
1669
2499
1670
2500
def process_request(self, request, address):
1671
2501
"""Start a new process to process the request."""
1672
proc = multiprocessing.Process(target = self.sub_process_main,
1673
args = (request,
1674
address))
2502
proc = multiprocessing.Process(target=self.sub_process_main,
2503
args=(request, address))
1675
2504
proc.start()
1676
2505
return proc
1677
2506
1678
2507
1679
2508
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1680
2509
""" adds a pipe to the MixIn """
2510
1681
2511
def process_request(self, request, client_address):
1682
2512
"""Overrides and wraps the original process_request().
1683
2513
1684
2514
This function creates a new pipe in self.pipe
1685
2515
"""
1686
2516
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1687
2517
1688
2518
proc = MultiprocessingMixIn.process_request(self, request,
1689
2519
client_address)
1690
2520
self.child_pipe.close()
1691
2521
self.add_pipe(parent_pipe, proc)
1692
2522
1693
2523
def add_pipe(self, parent_pipe, proc):
1694
2524
"""Dummy function; override as necessary"""
1695
raise NotImplementedError
2525
raise NotImplementedError()
1696
2526
1697
2527
1698
2528
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1699
2529
socketserver.TCPServer, object):
1700
2530
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1701
2531
1702
2532
Attributes:
1703
2533
enabled: Boolean; whether this server is activated yet
1704
2534
interface: None or a network interface name (string)
1705
2535
use_ipv6: Boolean; to use IPv6 or not
1706
2536
"""
2537
1707
2538
def __init__(self, server_address, RequestHandlerClass,
1708
interface=None, use_ipv6=True):
2539
interface=None,
2540
use_ipv6=True,
2541
socketfd=None):
2542
"""If socketfd is set, use that file descriptor instead of
2543
creating a new one with socket.socket().
2544
"""
1709
2545
self.interface = interface
1710
2546
if use_ipv6:
1711
2547
self.address_family = socket.AF_INET6
2548
if socketfd is not None:
2549
# Save the file descriptor
2550
self.socketfd = socketfd
2551
# Save the original socket.socket() function
2552
self.socket_socket = socket.socket
2553
2554
# To implement --socket, we monkey patch socket.socket.
2555
#
2556
# (When socketserver.TCPServer is a new-style class, we
2557
# could make self.socket into a property instead of monkey
2558
# patching socket.socket.)
2559
#
2560
# Create a one-time-only replacement for socket.socket()
2561
@functools.wraps(socket.socket)
2562
def socket_wrapper(*args, **kwargs):
2563
# Restore original function so subsequent calls are
2564
# not affected.
2565
socket.socket = self.socket_socket
2566
del self.socket_socket
2567
# This time only, return a new socket object from the
2568
# saved file descriptor.
2569
return socket.fromfd(self.socketfd, *args, **kwargs)
2570
# Replace socket.socket() function with wrapper
2571
socket.socket = socket_wrapper
2572
# The socketserver.TCPServer.__init__ will call
2573
# socket.socket(), which might be our replacement,
2574
# socket_wrapper(), if socketfd was set.
1712
2575
socketserver.TCPServer.__init__(self, server_address,
1713
2576
RequestHandlerClass)
2577
1714
2578
def server_bind(self):
1715
2579
"""This overrides the normal server_bind() function
1716
2580
to bind to an interface if one was specified, and also NOT to
1717
2581
bind to an address or port if they were not specified."""
2582
global SO_BINDTODEVICE
1718
2583
if self.interface is not None:
1719
2584
if SO_BINDTODEVICE is None:
1720
logger.error("SO_BINDTODEVICE does not exist;"
1721
" cannot bind to interface %s",
1722
self.interface)
1723
else:
1724
try:
1725
self.socket.setsockopt(socket.SOL_SOCKET,
1726
SO_BINDTODEVICE,
1727
str(self.interface
1728
+ '\0'))
1729
except socket.error as error:
1730
if error[0] == errno.EPERM:
1731
logger.error("No permission to"
1732
" bind to interface %s",
1733
self.interface)
1734
elif error[0] == errno.ENOPROTOOPT:
1735
logger.error("SO_BINDTODEVICE not available;"
1736
" cannot bind to interface %s",
1737
self.interface)
1738
else:
1739
raise
2585
# Fall back to a hard-coded value which seems to be
2586
# common enough.
2587
logger.warning("SO_BINDTODEVICE not found, trying 25")
2588
SO_BINDTODEVICE = 25
2589
try:
2590
self.socket.setsockopt(
2591
socket.SOL_SOCKET, SO_BINDTODEVICE,
2592
(self.interface + "\0").encode("utf-8"))
2593
except socket.error as error:
2594
if error.errno == errno.EPERM:
2595
logger.error("No permission to bind to"
2596
" interface %s", self.interface)
2597
elif error.errno == errno.ENOPROTOOPT:
2598
logger.error("SO_BINDTODEVICE not available;"
2599
" cannot bind to interface %s",
2600
self.interface)
2601
elif error.errno == errno.ENODEV:
2602
logger.error("Interface %s does not exist,"
2603
" cannot bind", self.interface)
2604
else:
2605
raise
1740
2606
# Only bind(2) the socket if we really need to.
1741
2607
if self.server_address[0] or self.server_address[1]:
2608
if self.server_address[1]:
2609
self.allow_reuse_address = True
1742
2610
if not self.server_address[0]:
1743
2611
if self.address_family == socket.AF_INET6:
1744
any_address = "::" # in6addr_any
2612
any_address = "::" # in6addr_any
1745
2613
else:
1746
any_address = socket.INADDR_ANY
2614
any_address = "0.0.0.0" # INADDR_ANY
1747
2615
self.server_address = (any_address,
1748
2616
self.server_address[1])
1749
2617
elif not self.server_address[1]:
1750
self.server_address = (self.server_address[0],
1751
0)
2618
self.server_address = (self.server_address[0], 0)
1752
2619
# if self.interface:
1753
2620
# self.server_address = (self.server_address[0],
1754
2621
# 0, # port
1760
2627
1761
2628
class MandosServer(IPv6_TCPServer):
1762
2629
"""Mandos server.
1763
2630
1764
2631
Attributes:
1765
2632
clients: set of Client objects
1766
2633
gnutls_priority GnuTLS priority string
1767
2634
use_dbus: Boolean; to emit D-Bus signals or not
1768
1769
Assumes a gobject.MainLoop event loop.
2635
2636
Assumes a GLib.MainLoop event loop.
1770
2637
"""
2638
1771
2639
def __init__(self, server_address, RequestHandlerClass,
1772
interface=None, use_ipv6=True, clients=None,
1773
gnutls_priority=None, use_dbus=True):
2640
interface=None,
2641
use_ipv6=True,
2642
clients=None,
2643
gnutls_priority=None,
2644
use_dbus=True,
2645
socketfd=None):
1774
2646
self.enabled = False
1775
2647
self.clients = clients
1776
2648
if self.clients is None:
1779
2651
self.gnutls_priority = gnutls_priority
1780
2652
IPv6_TCPServer.__init__(self, server_address,
1781
2653
RequestHandlerClass,
1782
interface = interface,
1783
use_ipv6 = use_ipv6)
2654
interface=interface,
2655
use_ipv6=use_ipv6,
2656
socketfd=socketfd)
2657
1784
2658
def server_activate(self):
1785
2659
if self.enabled:
1786
2660
return socketserver.TCPServer.server_activate(self)
1787
2661
1788
2662
def enable(self):
1789
2663
self.enabled = True
1790
2664
1791
2665
def add_pipe(self, parent_pipe, proc):
1792
2666
# Call "handle_ipc" for both data and EOF events
1793
gobject.io_add_watch(parent_pipe.fileno(),
1794
gobject.IO_IN | gobject.IO_HUP,
1795
functools.partial(self.handle_ipc,
1796
parent_pipe =
1797
parent_pipe,
1798
proc = proc))
1799
1800
def handle_ipc(self, source, condition, parent_pipe=None,
1801
proc = None, client_object=None):
1802
condition_names = {
1803
gobject.IO_IN: "IN", # There is data to read.
1804
gobject.IO_OUT: "OUT", # Data can be written (without
1805
# blocking).
1806
gobject.IO_PRI: "PRI", # There is urgent data to read.
1807
gobject.IO_ERR: "ERR", # Error condition.
1808
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1809
# broken, usually for pipes and
1810
# sockets).
1811
}
1812
conditions_string = ' | '.join(name
1813
for cond, name in
1814
condition_names.iteritems()
1815
if cond & condition)
2667
GLib.io_add_watch(
2668
parent_pipe.fileno(),
2669
GLib.IO_IN | GLib.IO_HUP,
2670
functools.partial(self.handle_ipc,
2671
parent_pipe=parent_pipe,
2672
proc=proc))
2673
2674
def handle_ipc(self, source, condition,
2675
parent_pipe=None,
2676
proc=None,
2677
client_object=None):
1816
2678
# error, or the other end of multiprocessing.Pipe has closed
1817
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2679
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1818
2680
# Wait for other process to exit
1819
2681
proc.join()
1820
2682
return False
1821
2683
1822
2684
# Read a request from the child
1823
2685
request = parent_pipe.recv()
1824
2686
command = request[0]
1825
2687
1826
2688
if command == 'init':
1827
fpr = request[1]
1828
address = request[2]
1829
1830
for c in self.clients.itervalues():
1831
if c.fingerprint == fpr:
2689
key_id = request[1].decode("ascii")
2690
fpr = request[2].decode("ascii")
2691
address = request[3]
2692
2693
for c in self.clients.values():
2694
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2695
continue
2696
if key_id and c.key_id == key_id:
2697
client = c
2698
break
2699
if fpr and c.fingerprint == fpr:
1832
2700
client = c
1833
2701
break
1834
2702
else:
1835
logger.info("Client not found for fingerprint: %s, ad"
1836
"dress: %s", fpr, address)
2703
logger.info("Client not found for key ID: %s, address"
2704
": %s", key_id or fpr, address)
1837
2705
if self.use_dbus:
1838
2706
# Emit D-Bus signal
1839
mandos_dbus_service.ClientNotFound(fpr,
2707
mandos_dbus_service.ClientNotFound(key_id or fpr,
1840
2708
address[0])
1841
2709
parent_pipe.send(False)
1842
2710
return False
1843
1844
gobject.io_add_watch(parent_pipe.fileno(),
1845
gobject.IO_IN | gobject.IO_HUP,
1846
functools.partial(self.handle_ipc,
1847
parent_pipe =
1848
parent_pipe,
1849
proc = proc,
1850
client_object =
1851
client))
2711
2712
GLib.io_add_watch(
2713
parent_pipe.fileno(),
2714
GLib.IO_IN | GLib.IO_HUP,
2715
functools.partial(self.handle_ipc,
2716
parent_pipe=parent_pipe,
2717
proc=proc,
2718
client_object=client))
1852
2719
parent_pipe.send(True)
1853
2720
# remove the old hook in favor of the new above hook on
1854
2721
# same fileno
1857
2724
funcname = request[1]
1858
2725
args = request[2]
1859
2726
kwargs = request[3]
1860
2727
1861
2728
parent_pipe.send(('data', getattr(client_object,
1862
2729
funcname)(*args,
1863
**kwargs)))
1864
2730
**kwargs)))
2731
1865
2732
if command == 'getattr':
1866
2733
attrname = request[1]
1867
if callable(client_object.__getattribute__(attrname)):
1868
parent_pipe.send(('function',))
2734
if isinstance(client_object.__getattribute__(attrname),
2735
collections.Callable):
2736
parent_pipe.send(('function', ))
1869
2737
else:
1870
parent_pipe.send(('data', client_object
1871
.__getattribute__(attrname)))
1872
2738
parent_pipe.send((
2739
'data', client_object.__getattribute__(attrname)))
2740
1873
2741
if command == 'setattr':
1874
2742
attrname = request[1]
1875
2743
value = request[2]
1876
2744
setattr(client_object, attrname, value)
1877
2745
1878
2746
return True
1879
2747
1880
2748
2749
def rfc3339_duration_to_delta(duration):
2750
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2751
2752
>>> rfc3339_duration_to_delta("P7D")
2753
datetime.timedelta(7)
2754
>>> rfc3339_duration_to_delta("PT60S")
2755
datetime.timedelta(0, 60)
2756
>>> rfc3339_duration_to_delta("PT60M")
2757
datetime.timedelta(0, 3600)
2758
>>> rfc3339_duration_to_delta("PT24H")
2759
datetime.timedelta(1)
2760
>>> rfc3339_duration_to_delta("P1W")
2761
datetime.timedelta(7)
2762
>>> rfc3339_duration_to_delta("PT5M30S")
2763
datetime.timedelta(0, 330)
2764
>>> rfc3339_duration_to_delta("P1DT3M20S")
2765
datetime.timedelta(1, 200)
2766
"""
2767
2768
# Parsing an RFC 3339 duration with regular expressions is not
2769
# possible - there would have to be multiple places for the same
2770
# values, like seconds. The current code, while more esoteric, is
2771
# cleaner without depending on a parsing library. If Python had a
2772
# built-in library for parsing we would use it, but we'd like to
2773
# avoid excessive use of external libraries.
2774
2775
# New type for defining tokens, syntax, and semantics all-in-one
2776
Token = collections.namedtuple("Token", (
2777
"regexp", # To match token; if "value" is not None, must have
2778
# a "group" containing digits
2779
"value", # datetime.timedelta or None
2780
"followers")) # Tokens valid after this token
2781
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2782
# the "duration" ABNF definition in RFC 3339, Appendix A.
2783
token_end = Token(re.compile(r"$"), None, frozenset())
2784
token_second = Token(re.compile(r"(\d+)S"),
2785
datetime.timedelta(seconds=1),
2786
frozenset((token_end, )))
2787
token_minute = Token(re.compile(r"(\d+)M"),
2788
datetime.timedelta(minutes=1),
2789
frozenset((token_second, token_end)))
2790
token_hour = Token(re.compile(r"(\d+)H"),
2791
datetime.timedelta(hours=1),
2792
frozenset((token_minute, token_end)))
2793
token_time = Token(re.compile(r"T"),
2794
None,
2795
frozenset((token_hour, token_minute,
2796
token_second)))
2797
token_day = Token(re.compile(r"(\d+)D"),
2798
datetime.timedelta(days=1),
2799
frozenset((token_time, token_end)))
2800
token_month = Token(re.compile(r"(\d+)M"),
2801
datetime.timedelta(weeks=4),
2802
frozenset((token_day, token_end)))
2803
token_year = Token(re.compile(r"(\d+)Y"),
2804
datetime.timedelta(weeks=52),
2805
frozenset((token_month, token_end)))
2806
token_week = Token(re.compile(r"(\d+)W"),
2807
datetime.timedelta(weeks=1),
2808
frozenset((token_end, )))
2809
token_duration = Token(re.compile(r"P"), None,
2810
frozenset((token_year, token_month,
2811
token_day, token_time,
2812
token_week)))
2813
# Define starting values:
2814
# Value so far
2815
value = datetime.timedelta()
2816
found_token = None
2817
# Following valid tokens
2818
followers = frozenset((token_duration, ))
2819
# String left to parse
2820
s = duration
2821
# Loop until end token is found
2822
while found_token is not token_end:
2823
# Search for any currently valid tokens
2824
for token in followers:
2825
match = token.regexp.match(s)
2826
if match is not None:
2827
# Token found
2828
if token.value is not None:
2829
# Value found, parse digits
2830
factor = int(match.group(1), 10)
2831
# Add to value so far
2832
value += factor * token.value
2833
# Strip token from string
2834
s = token.regexp.sub("", s, 1)
2835
# Go to found token
2836
found_token = token
2837
# Set valid next tokens
2838
followers = found_token.followers
2839
break
2840
else:
2841
# No currently valid tokens were found
2842
raise ValueError("Invalid RFC 3339 duration: {!r}"
2843
.format(duration))
2844
# End token found
2845
return value
2846
2847
1881
2848
def string_to_delta(interval):
1882
2849
"""Parse a string and return a datetime.timedelta
1883
2850
1884
2851
>>> string_to_delta('7d')
1885
2852
datetime.timedelta(7)
1886
2853
>>> string_to_delta('60s')
1894
2861
>>> string_to_delta('5m 30s')
1895
2862
datetime.timedelta(0, 330)
1896
2863
"""
2864
2865
try:
2866
return rfc3339_duration_to_delta(interval)
2867
except ValueError:
2868
pass
2869
1897
2870
timevalue = datetime.timedelta(0)
1898
2871
for s in interval.split():
1899
2872
try:
1900
suffix = unicode(s[-1])
2873
suffix = s[-1]
1901
2874
value = int(s[:-1])
1902
2875
if suffix == "d":
1903
2876
delta = datetime.timedelta(value)
1910
2883
elif suffix == "w":
1911
2884
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1912
2885
else:
1913
raise ValueError("Unknown suffix %r" % suffix)
1914
except (ValueError, IndexError) as e:
2886
raise ValueError("Unknown suffix {!r}".format(suffix))
2887
except IndexError as e:
1915
2888
raise ValueError(*(e.args))
1916
2889
timevalue += delta
1917
2890
return timevalue
1918
2891
1919
2892
1920
def daemon(nochdir = False, noclose = False):
2893
def daemon(nochdir=False, noclose=False):
1921
2894
"""See daemon(3). Standard BSD Unix function.
1922
2895
1923
2896
This should really exist as os.daemon, but it doesn't (yet)."""
1924
2897
if os.fork():
1925
2898
sys.exit()
1930
2903
sys.exit()
1931
2904
if not noclose:
1932
2905
# Close all standard open file descriptors
1933
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2906
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1934
2907
if not stat.S_ISCHR(os.fstat(null).st_mode):
1935
2908
raise OSError(errno.ENODEV,
1936
"%s not a character device"
1937
% os.path.devnull)
2909
"{} not a character device"
2910
.format(os.devnull))
1938
2911
os.dup2(null, sys.stdin.fileno())
1939
2912
os.dup2(null, sys.stdout.fileno())
1940
2913
os.dup2(null, sys.stderr.fileno())
1943
2916
1944
2917
1945
2918
def main():
1946
2919
1947
2920
##################################################################
1948
2921
# Parsing of options, both command line and config file
1949
2922
1950
2923
parser = argparse.ArgumentParser()
1951
2924
parser.add_argument("-v", "--version", action="version",
1952
version = "%%(prog)s %s" % version,
2925
version="%(prog)s {}".format(version),
1953
2926
help="show version number and exit")
1954
2927
parser.add_argument("-i", "--interface", metavar="IF",
1955
2928
help="Bind to interface IF")
1961
2934
help="Run self-test")
1962
2935
parser.add_argument("--debug", action="store_true",
1963
2936
help="Debug mode; run in foreground and log"
1964
" to terminal")
2937
" to terminal", default=None)
1965
2938
parser.add_argument("--debuglevel", metavar="LEVEL",
1966
2939
help="Debug level for stdout output")
1967
2940
parser.add_argument("--priority", help="GnuTLS"
1974
2947
" files")
1975
2948
parser.add_argument("--no-dbus", action="store_false",
1976
2949
dest="use_dbus", help="Do not provide D-Bus"
1977
" system bus interface")
2950
" system bus interface", default=None)
1978
2951
parser.add_argument("--no-ipv6", action="store_false",
1979
dest="use_ipv6", help="Do not use IPv6")
2952
dest="use_ipv6", help="Do not use IPv6",
2953
default=None)
1980
2954
parser.add_argument("--no-restore", action="store_false",
1981
2955
dest="restore", help="Do not restore stored"
1982
" state")
2956
" state", default=None)
2957
parser.add_argument("--socket", type=int,
2958
help="Specify a file descriptor to a network"
2959
" socket to use instead of creating one")
1983
2960
parser.add_argument("--statedir", metavar="DIR",
1984
2961
help="Directory to save/restore state in")
1985
2962
parser.add_argument("--foreground", action="store_true",
2963
help="Run in foreground", default=None)
2964
parser.add_argument("--no-zeroconf", action="store_false",
2965
dest="zeroconf", help="Do not use Zeroconf",
2966
default=None)
2967
1986
2968
options = parser.parse_args()
1987
2969
1988
2970
if options.check:
1989
2971
import doctest
1990
doctest.testmod()
1991
sys.exit()
1992
2972
fail_count, test_count = doctest.testmod()
2973
sys.exit(os.EX_OK if fail_count == 0 else 1)
2974
1993
2975
# Default values for config file for server-global settings
1994
server_defaults = { "interface": "",
1995
"address": "",
1996
"port": "",
1997
"debug": "False",
1998
"priority":
1999
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2000
"servicename": "Mandos",
2001
"use_dbus": "True",
2002
"use_ipv6": "True",
2003
"debuglevel": "",
2004
"restore": "True",
2005
"statedir": "/var/lib/mandos"
2006
}
2007
2976
if gnutls.has_rawpk:
2977
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2978
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2979
else:
2980
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2981
":+SIGN-DSA-SHA256")
2982
server_defaults = {"interface": "",
2983
"address": "",
2984
"port": "",
2985
"debug": "False",
2986
"priority": priority,
2987
"servicename": "Mandos",
2988
"use_dbus": "True",
2989
"use_ipv6": "True",
2990
"debuglevel": "",
2991
"restore": "True",
2992
"socket": "",
2993
"statedir": "/var/lib/mandos",
2994
"foreground": "False",
2995
"zeroconf": "True",
2996
}
2997
del priority
2998
2008
2999
# Parse config file for server-global settings
2009
3000
server_config = configparser.SafeConfigParser(server_defaults)
2010
3001
del server_defaults
2011
server_config.read(os.path.join(options.configdir,
2012
"mandos.conf"))
3002
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2013
3003
# Convert the SafeConfigParser object to a dict
2014
3004
server_settings = server_config.defaults()
2015
3005
# Use the appropriate methods on the non-string config options
2016
for option in ("debug", "use_dbus", "use_ipv6"):
3006
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3007
"foreground", "zeroconf"):
2017
3008
server_settings[option] = server_config.getboolean("DEFAULT",
2018
3009
option)
2019
3010
if server_settings["port"]:
2020
3011
server_settings["port"] = server_config.getint("DEFAULT",
2021
3012
"port")
3013
if server_settings["socket"]:
3014
server_settings["socket"] = server_config.getint("DEFAULT",
3015
"socket")
3016
# Later, stdin will, and stdout and stderr might, be dup'ed
3017
# over with an opened os.devnull. But we don't want this to
3018
# happen with a supplied network socket.
3019
if 0 <= server_settings["socket"] <= 2:
3020
server_settings["socket"] = os.dup(server_settings
3021
["socket"])
2022
3022
del server_config
2023
3023
2024
3024
# Override the settings from the config file with command line
2025
3025
# options, if set.
2026
3026
for option in ("interface", "address", "port", "debug",
2027
"priority", "servicename", "configdir",
2028
"use_dbus", "use_ipv6", "debuglevel", "restore",
2029
"statedir"):
3027
"priority", "servicename", "configdir", "use_dbus",
3028
"use_ipv6", "debuglevel", "restore", "statedir",
3029
"socket", "foreground", "zeroconf"):
2030
3030
value = getattr(options, option)
2031
3031
if value is not None:
2032
3032
server_settings[option] = value
2033
3033
del options
2034
3034
# Force all strings to be unicode
2035
3035
for option in server_settings.keys():
2036
if type(server_settings[option]) is str:
2037
server_settings[option] = unicode(server_settings[option])
3036
if isinstance(server_settings[option], bytes):
3037
server_settings[option] = (server_settings[option]
3038
.decode("utf-8"))
3039
# Force all boolean options to be boolean
3040
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3041
"foreground", "zeroconf"):
3042
server_settings[option] = bool(server_settings[option])
3043
# Debug implies foreground
3044
if server_settings["debug"]:
3045
server_settings["foreground"] = True
2038
3046
# Now we have our good server settings in "server_settings"
2039
3047
2040
3048
##################################################################
2041
3049
3050
if (not server_settings["zeroconf"]
3051
and not (server_settings["port"]
3052
or server_settings["socket"] != "")):
3053
parser.error("Needs port or socket to work without Zeroconf")
3054
2042
3055
# For convenience
2043
3056
debug = server_settings["debug"]
2044
3057
debuglevel = server_settings["debuglevel"]
2046
3059
use_ipv6 = server_settings["use_ipv6"]
2047
3060
stored_state_path = os.path.join(server_settings["statedir"],
2048
3061
stored_state_file)
2049
3062
foreground = server_settings["foreground"]
3063
zeroconf = server_settings["zeroconf"]
3064
2050
3065
if debug:
2051
initlogger(logging.DEBUG)
3066
initlogger(debug, logging.DEBUG)
2052
3067
else:
2053
3068
if not debuglevel:
2054
initlogger()
3069
initlogger(debug)
2055
3070
else:
2056
3071
level = getattr(logging, debuglevel.upper())
2057
initlogger(level)
2058
3072
initlogger(debug, level)
3073
2059
3074
if server_settings["servicename"] != "Mandos":
2060
syslogger.setFormatter(logging.Formatter
2061
('Mandos (%s) [%%(process)d]:'
2062
' %%(levelname)s: %%(message)s'
2063
% server_settings["servicename"]))
2064
3075
syslogger.setFormatter(
3076
logging.Formatter('Mandos ({}) [%(process)d]:'
3077
' %(levelname)s: %(message)s'.format(
3078
server_settings["servicename"])))
3079
2065
3080
# Parse config file with clients
2066
client_defaults = { "timeout": "5m",
2067
"extended_timeout": "15m",
2068
"interval": "2m",
2069
"checker": "fping -q -- %%(host)s",
2070
"host": "",
2071
"approval_delay": "0s",
2072
"approval_duration": "1s",
2073
}
2074
client_config = configparser.SafeConfigParser(client_defaults)
3081
client_config = configparser.SafeConfigParser(Client
3082
.client_defaults)
2075
3083
client_config.read(os.path.join(server_settings["configdir"],
2076
3084
"clients.conf"))
2077
3085
2078
3086
global mandos_dbus_service
2079
3087
mandos_dbus_service = None
2080
2081
tcp_server = MandosServer((server_settings["address"],
2082
server_settings["port"]),
2083
ClientHandler,
2084
interface=(server_settings["interface"]
2085
or None),
2086
use_ipv6=use_ipv6,
2087
gnutls_priority=
2088
server_settings["priority"],
2089
use_dbus=use_dbus)
2090
if not debug:
2091
pidfilename = "/var/run/mandos.pid"
2092
try:
2093
pidfile = open(pidfilename, "w")
2094
except IOError:
2095
logger.error("Could not open file %r", pidfilename)
2096
2097
try:
2098
uid = pwd.getpwnam("_mandos").pw_uid
2099
gid = pwd.getpwnam("_mandos").pw_gid
2100
except KeyError:
2101
try:
2102
uid = pwd.getpwnam("mandos").pw_uid
2103
gid = pwd.getpwnam("mandos").pw_gid
3088
3089
socketfd = None
3090
if server_settings["socket"] != "":
3091
socketfd = server_settings["socket"]
3092
tcp_server = MandosServer(
3093
(server_settings["address"], server_settings["port"]),
3094
ClientHandler,
3095
interface=(server_settings["interface"] or None),
3096
use_ipv6=use_ipv6,
3097
gnutls_priority=server_settings["priority"],
3098
use_dbus=use_dbus,
3099
socketfd=socketfd)
3100
if not foreground:
3101
pidfilename = "/run/mandos.pid"
3102
if not os.path.isdir("/run/."):
3103
pidfilename = "/var/run/mandos.pid"
3104
pidfile = None
3105
try:
3106
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3107
except IOError as e:
3108
logger.error("Could not open file %r", pidfilename,
3109
exc_info=e)
3110
3111
for name, group in (("_mandos", "_mandos"),
3112
("mandos", "mandos"),
3113
("nobody", "nogroup")):
3114
try:
3115
uid = pwd.getpwnam(name).pw_uid
3116
gid = pwd.getpwnam(group).pw_gid
3117
break
2104
3118
except KeyError:
2105
try:
2106
uid = pwd.getpwnam("nobody").pw_uid
2107
gid = pwd.getpwnam("nobody").pw_gid
2108
except KeyError:
2109
uid = 65534
2110
gid = 65534
3119
continue
3120
else:
3121
uid = 65534
3122
gid = 65534
2111
3123
try:
2112
3124
os.setgid(gid)
2113
3125
os.setuid(uid)
3126
if debug:
3127
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3128
gid))
2114
3129
except OSError as error:
2115
if error[0] != errno.EPERM:
2116
raise error
2117
3130
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3131
.format(uid, gid, os.strerror(error.errno)))
3132
if error.errno != errno.EPERM:
3133
raise
3134
2118
3135
if debug:
2119
3136
# Enable all possible GnuTLS debugging
2120
3137
2121
3138
# "Use a log level over 10 to enable all debugging options."
2122
3139
# - GnuTLS manual
2123
gnutls.library.functions.gnutls_global_set_log_level(11)
2124
2125
@gnutls.library.types.gnutls_log_func
3140
gnutls.global_set_log_level(11)
3141
3142
@gnutls.log_func
2126
3143
def debug_gnutls(level, string):
2127
3144
logger.debug("GnuTLS: %s", string[:-1])
2128
2129
(gnutls.library.functions
2130
.gnutls_global_set_log_function(debug_gnutls))
2131
3145
3146
gnutls.global_set_log_function(debug_gnutls)
3147
2132
3148
# Redirect stdin so all checkers get /dev/null
2133
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3149
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2134
3150
os.dup2(null, sys.stdin.fileno())
2135
3151
if null > 2:
2136
3152
os.close(null)
2137
else:
2138
# No console logging
2139
logger.removeHandler(console)
2140
3153
2141
3154
# Need to fork before connecting to D-Bus
2142
if not debug:
3155
if not foreground:
2143
3156
# Close all input and output, do double fork, etc.
2144
3157
daemon()
2145
3158
3159
# multiprocessing will use threads, so before we use GLib we need
3160
# to inform GLib that threads will be used.
3161
GLib.threads_init()
3162
2146
3163
global main_loop
2147
3164
# From the Avahi example code
2148
DBusGMainLoop(set_as_default=True )
2149
main_loop = gobject.MainLoop()
3165
DBusGMainLoop(set_as_default=True)
3166
main_loop = GLib.MainLoop()
2150
3167
bus = dbus.SystemBus()
2151
3168
# End of Avahi example code
2152
3169
if use_dbus:
2153
3170
try:
2154
3171
bus_name = dbus.service.BusName("se.recompile.Mandos",
2155
bus, do_not_queue=True)
2156
old_bus_name = (dbus.service.BusName
2157
("se.bsnet.fukt.Mandos", bus,
2158
do_not_queue=True))
2159
except dbus.exceptions.NameExistsException as e:
2160
logger.error(unicode(e) + ", disabling D-Bus")
3172
bus,
3173
do_not_queue=True)
3174
old_bus_name = dbus.service.BusName(
3175
"se.bsnet.fukt.Mandos", bus,
3176
do_not_queue=True)
3177
except dbus.exceptions.DBusException as e:
3178
logger.error("Disabling D-Bus:", exc_info=e)
2161
3179
use_dbus = False
2162
3180
server_settings["use_dbus"] = False
2163
3181
tcp_server.use_dbus = False
2164
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2165
service = AvahiServiceToSyslog(name =
2166
server_settings["servicename"],
2167
servicetype = "_mandos._tcp",
2168
protocol = protocol, bus = bus)
2169
if server_settings["interface"]:
2170
service.interface = (if_nametoindex
2171
(str(server_settings["interface"])))
2172
3182
if zeroconf:
3183
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3184
service = AvahiServiceToSyslog(
3185
name=server_settings["servicename"],
3186
servicetype="_mandos._tcp",
3187
protocol=protocol,
3188
bus=bus)
3189
if server_settings["interface"]:
3190
service.interface = if_nametoindex(
3191
server_settings["interface"].encode("utf-8"))
3192
2173
3193
global multiprocessing_manager
2174
3194
multiprocessing_manager = multiprocessing.Manager()
2175
3195
2176
3196
client_class = Client
2177
3197
if use_dbus:
2178
client_class = functools.partial(ClientDBusTransitional,
2179
bus = bus)
2180
2181
special_settings = {
2182
# Some settings need to be accessd by special methods;
2183
# booleans need .getboolean(), etc. Here is a list of them:
2184
"approved_by_default":
2185
lambda section:
2186
client_config.getboolean(section, "approved_by_default"),
2187
"enabled":
2188
lambda section:
2189
client_config.getboolean(section, "enabled"),
2190
}
2191
# Construct a new dict of client settings of this form:
2192
# { client_name: {setting_name: value, ...}, ...}
2193
# with exceptions for any special settings as defined above
2194
client_settings = dict((clientname,
2195
dict((setting,
2196
(value
2197
if setting not in special_settings
2198
else special_settings[setting]
2199
(clientname)))
2200
for setting, value in
2201
client_config.items(clientname)))
2202
for clientname in client_config.sections())
2203
3198
client_class = functools.partial(ClientDBus, bus=bus)
3199
3200
client_settings = Client.config_parser(client_config)
2204
3201
old_client_settings = {}
2205
clients_data = []
2206
3202
clients_data = {}
3203
3204
# This is used to redirect stdout and stderr for checker processes
3205
global wnull
3206
wnull = open(os.devnull, "w") # A writable /dev/null
3207
# Only used if server is running in foreground but not in debug
3208
# mode
3209
if debug or not foreground:
3210
wnull.close()
3211
2207
3212
# Get client data and settings from last running state.
2208
3213
if server_settings["restore"]:
2209
3214
try:
2210
3215
with open(stored_state_path, "rb") as stored_state:
2211
clients_data, old_client_settings = (pickle.load
2212
(stored_state))
3216
if sys.version_info.major == 2:
3217
clients_data, old_client_settings = pickle.load(
3218
stored_state)
3219
else:
3220
bytes_clients_data, bytes_old_client_settings = (
3221
pickle.load(stored_state, encoding="bytes"))
3222
# Fix bytes to strings
3223
# clients_data
3224
# .keys()
3225
clients_data = {(key.decode("utf-8")
3226
if isinstance(key, bytes)
3227
else key): value
3228
for key, value in
3229
bytes_clients_data.items()}
3230
del bytes_clients_data
3231
for key in clients_data:
3232
value = {(k.decode("utf-8")
3233
if isinstance(k, bytes) else k): v
3234
for k, v in
3235
clients_data[key].items()}
3236
clients_data[key] = value
3237
# .client_structure
3238
value["client_structure"] = [
3239
(s.decode("utf-8")
3240
if isinstance(s, bytes)
3241
else s) for s in
3242
value["client_structure"]]
3243
# .name & .host
3244
for k in ("name", "host"):
3245
if isinstance(value[k], bytes):
3246
value[k] = value[k].decode("utf-8")
3247
if not value.has_key("key_id"):
3248
value["key_id"] = ""
3249
elif not value.has_key("fingerprint"):
3250
value["fingerprint"] = ""
3251
# old_client_settings
3252
# .keys()
3253
old_client_settings = {
3254
(key.decode("utf-8")
3255
if isinstance(key, bytes)
3256
else key): value
3257
for key, value in
3258
bytes_old_client_settings.items()}
3259
del bytes_old_client_settings
3260
# .host
3261
for value in old_client_settings.values():
3262
if isinstance(value["host"], bytes):
3263
value["host"] = (value["host"]
3264
.decode("utf-8"))
2213
3265
os.remove(stored_state_path)
2214
3266
except IOError as e:
2215
logger.warning("Could not load persistent state: {0}"
2216
.format(e))
2217
if e.errno != errno.ENOENT:
3267
if e.errno == errno.ENOENT:
3268
logger.warning("Could not load persistent state:"
3269
" {}".format(os.strerror(e.errno)))
3270
else:
3271
logger.critical("Could not load persistent state:",
3272
exc_info=e)
2218
3273
raise
2219
2220
with Crypto() as crypt:
2221
for client in clients_data:
2222
client_name = client["name"]
2223
3274
except EOFError as e:
3275
logger.warning("Could not load persistent state: "
3276
"EOFError:",
3277
exc_info=e)
3278
3279
with PGPEngine() as pgp:
3280
for client_name, client in clients_data.items():
3281
# Skip removed clients
3282
if client_name not in client_settings:
3283
continue
3284
2224
3285
# Decide which value to use after restoring saved state.
2225
3286
# We have three different values: Old config file,
2226
3287
# new config file, and saved state.
2231
3292
# For each value in new config, check if it
2232
3293
# differs from the old config value (Except for
2233
3294
# the "secret" attribute)
2234
if (name != "secret" and
2235
value != old_client_settings[client_name]
2236
[name]):
2237
setattr(client, name, value)
3295
if (name != "secret"
3296
and (value !=
3297
old_client_settings[client_name][name])):
3298
client[name] = value
2238
3299
except KeyError:
2239
3300
pass
2240
3301
2241
3302
# Clients who has passed its expire date can still be
2242
# enabled if its last checker was sucessful. Clients
2243
# whose checker failed before we stored its state is
2244
# assumed to have failed all checkers during downtime.
2245
if client["enabled"] and client["last_checked_ok"]:
2246
if ((datetime.datetime.utcnow()
2247
- client["last_checked_ok"])
2248
> client["interval"]):
2249
if client["last_checker_status"] != 0:
3303
# enabled if its last checker was successful. A Client
3304
# whose checker succeeded before we stored its state is
3305
# assumed to have successfully run all checkers during
3306
# downtime.
3307
if client["enabled"]:
3308
if datetime.datetime.utcnow() >= client["expires"]:
3309
if not client["last_checked_ok"]:
3310
logger.warning(
3311
"disabling client {} - Client never "
3312
"performed a successful checker".format(
3313
client_name))
3314
client["enabled"] = False
3315
elif client["last_checker_status"] != 0:
3316
logger.warning(
3317
"disabling client {} - Client last"
3318
" checker failed with error code"
3319
" {}".format(
3320
client_name,
3321
client["last_checker_status"]))
2250
3322
client["enabled"] = False
2251
3323
else:
2252
client["expires"] = (datetime.datetime
2253
.utcnow()
2254
+ client["timeout"])
2255
2256
client["changedstate"] = (multiprocessing_manager
2257
.Condition
2258
(multiprocessing_manager
2259
.Lock()))
2260
if use_dbus:
2261
new_client = (ClientDBusTransitional.__new__
2262
(ClientDBusTransitional))
2263
tcp_server.clients[client_name] = new_client
2264
new_client.bus = bus
2265
for name, value in client.iteritems():
2266
setattr(new_client, name, value)
2267
client_object_name = unicode(client_name).translate(
2268
{ord("."): ord("_"),
2269
ord("-"): ord("_")})
2270
new_client.dbus_object_path = (dbus.ObjectPath
2271
("/clients/"
2272
+ client_object_name))
2273
DBusObjectWithProperties.__init__(new_client,
2274
new_client.bus,
2275
new_client
2276
.dbus_object_path)
2277
else:
2278
tcp_server.clients[client_name] = (Client.__new__
2279
(Client))
2280
for name, value in client.iteritems():
2281
setattr(tcp_server.clients[client_name],
2282
name, value)
2283
3324
client["expires"] = (
3325
datetime.datetime.utcnow()
3326
+ client["timeout"])
3327
logger.debug("Last checker succeeded,"
3328
" keeping {} enabled".format(
3329
client_name))
2284
3330
try:
2285
tcp_server.clients[client_name].secret = (
2286
crypt.decrypt(tcp_server.clients[client_name]
2287
.encrypted_secret,
2288
client_settings[client_name]
2289
["secret"]))
2290
except CryptoError:
3331
client["secret"] = pgp.decrypt(
3332
client["encrypted_secret"],
3333
client_settings[client_name]["secret"])
3334
except PGPError:
2291
3335
# If decryption fails, we use secret from new settings
2292
tcp_server.clients[client_name].secret = (
2293
client_settings[client_name]["secret"])
2294
2295
# Create/remove clients based on new changes made to config
2296
for clientname in set(old_client_settings) - set(client_settings):
2297
del tcp_server.clients[clientname]
2298
for clientname in set(client_settings) - set(old_client_settings):
2299
tcp_server.clients[clientname] = (client_class(name
2300
= clientname,
2301
config =
2302
client_settings
2303
[clientname]))
2304
3336
logger.debug("Failed to decrypt {} old secret".format(
3337
client_name))
3338
client["secret"] = (client_settings[client_name]
3339
["secret"])
3340
3341
# Add/remove clients based on new changes made to config
3342
for client_name in (set(old_client_settings)
3343
- set(client_settings)):
3344
del clients_data[client_name]
3345
for client_name in (set(client_settings)
3346
- set(old_client_settings)):
3347
clients_data[client_name] = client_settings[client_name]
3348
3349
# Create all client objects
3350
for client_name, client in clients_data.items():
3351
tcp_server.clients[client_name] = client_class(
3352
name=client_name,
3353
settings=client,
3354
server_settings=server_settings)
3355
2305
3356
if not tcp_server.clients:
2306
3357
logger.warning("No clients defined")
2307
2308
if not debug:
2309
try:
2310
with pidfile:
2311
pid = os.getpid()
2312
pidfile.write(str(pid) + "\n".encode("utf-8"))
2313
del pidfile
2314
except IOError:
2315
logger.error("Could not write to file %r with PID %d",
2316
pidfilename, pid)
2317
except NameError:
2318
# "pidfile" was never created
2319
pass
3358
3359
if not foreground:
3360
if pidfile is not None:
3361
pid = os.getpid()
3362
try:
3363
with pidfile:
3364
print(pid, file=pidfile)
3365
except IOError:
3366
logger.error("Could not write to file %r with PID %d",
3367
pidfilename, pid)
3368
del pidfile
2320
3369
del pidfilename
2321
2322
signal.signal(signal.SIGINT, signal.SIG_IGN)
2323
2324
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2325
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2326
3370
3371
for termsig in (signal.SIGHUP, signal.SIGTERM):
3372
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3373
lambda: main_loop.quit() and False)
3374
2327
3375
if use_dbus:
2328
class MandosDBusService(dbus.service.Object):
3376
3377
@alternate_dbus_interfaces(
3378
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3379
class MandosDBusService(DBusObjectWithObjectManager):
2329
3380
"""A D-Bus proxy object"""
3381
2330
3382
def __init__(self):
2331
3383
dbus.service.Object.__init__(self, bus, "/")
3384
2332
3385
_interface = "se.recompile.Mandos"
2333
3386
2334
3387
@dbus.service.signal(_interface, signature="o")
2335
3388
def ClientAdded(self, objpath):
2336
3389
"D-Bus signal"
2337
3390
pass
2338
3391
2339
3392
@dbus.service.signal(_interface, signature="ss")
2340
def ClientNotFound(self, fingerprint, address):
3393
def ClientNotFound(self, key_id, address):
2341
3394
"D-Bus signal"
2342
3395
pass
2343
3396
3397
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3398
"true"})
2344
3399
@dbus.service.signal(_interface, signature="os")
2345
3400
def ClientRemoved(self, objpath, name):
2346
3401
"D-Bus signal"
2347
3402
pass
2348
3403
3404
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3405
"true"})
2349
3406
@dbus.service.method(_interface, out_signature="ao")
2350
3407
def GetAllClients(self):
2351
3408
"D-Bus method"
2352
return dbus.Array(c.dbus_object_path
2353
for c in
2354
tcp_server.clients.itervalues())
2355
3409
return dbus.Array(c.dbus_object_path for c in
3410
tcp_server.clients.values())
3411
3412
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3413
"true"})
2356
3414
@dbus.service.method(_interface,
2357
3415
out_signature="a{oa{sv}}")
2358
3416
def GetAllClientsWithProperties(self):
2359
3417
"D-Bus method"
2360
3418
return dbus.Dictionary(
2361
((c.dbus_object_path, c.GetAll(""))
2362
for c in tcp_server.clients.itervalues()),
3419
{c.dbus_object_path: c.GetAll(
3420
"se.recompile.Mandos.Client")
3421
for c in tcp_server.clients.values()},
2363
3422
signature="oa{sv}")
2364
3423
2365
3424
@dbus.service.method(_interface, in_signature="o")
2366
3425
def RemoveClient(self, object_path):
2367
3426
"D-Bus method"
2368
for c in tcp_server.clients.itervalues():
3427
for c in tcp_server.clients.values():
2369
3428
if c.dbus_object_path == object_path:
2370
3429
del tcp_server.clients[c.name]
2371
3430
c.remove_from_connection()
2372
# Don't signal anything except ClientRemoved
3431
# Don't signal the disabling
2373
3432
c.disable(quiet=True)
2374
# Emit D-Bus signal
2375
self.ClientRemoved(object_path, c.name)
3433
# Emit D-Bus signal for removal
3434
self.client_removed_signal(c)
2376
3435
return
2377
3436
raise KeyError(object_path)
2378
3437
2379
3438
del _interface
2380
2381
class MandosDBusServiceTransitional(MandosDBusService):
2382
__metaclass__ = AlternateDBusNamesMetaclass
2383
mandos_dbus_service = MandosDBusServiceTransitional()
2384
3439
3440
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3441
out_signature="a{oa{sa{sv}}}")
3442
def GetManagedObjects(self):
3443
"""D-Bus method"""
3444
return dbus.Dictionary(
3445
{client.dbus_object_path:
3446
dbus.Dictionary(
3447
{interface: client.GetAll(interface)
3448
for interface in
3449
client._get_all_interface_names()})
3450
for client in tcp_server.clients.values()})
3451
3452
def client_added_signal(self, client):
3453
"""Send the new standard signal and the old signal"""
3454
if use_dbus:
3455
# New standard signal
3456
self.InterfacesAdded(
3457
client.dbus_object_path,
3458
dbus.Dictionary(
3459
{interface: client.GetAll(interface)
3460
for interface in
3461
client._get_all_interface_names()}))
3462
# Old signal
3463
self.ClientAdded(client.dbus_object_path)
3464
3465
def client_removed_signal(self, client):
3466
"""Send the new standard signal and the old signal"""
3467
if use_dbus:
3468
# New standard signal
3469
self.InterfacesRemoved(
3470
client.dbus_object_path,
3471
client._get_all_interface_names())
3472
# Old signal
3473
self.ClientRemoved(client.dbus_object_path,
3474
client.name)
3475
3476
mandos_dbus_service = MandosDBusService()
3477
3478
# Save modules to variables to exempt the modules from being
3479
# unloaded before the function registered with atexit() is run.
3480
mp = multiprocessing
3481
wn = wnull
3482
2385
3483
def cleanup():
2386
3484
"Cleanup function; run on exit"
2387
service.cleanup()
2388
2389
multiprocessing.active_children()
3485
if zeroconf:
3486
service.cleanup()
3487
3488
mp.active_children()
3489
wn.close()
2390
3490
if not (tcp_server.clients or client_settings):
2391
3491
return
2392
3492
2393
3493
# Store client before exiting. Secrets are encrypted with key
2394
3494
# based on what config file has. If config file is
2395
3495
# removed/edited, old secret will thus be unrecovable.
2396
clients = []
2397
with Crypto() as crypt:
2398
for client in tcp_server.clients.itervalues():
3496
clients = {}
3497
with PGPEngine() as pgp:
3498
for client in tcp_server.clients.values():
2399
3499
key = client_settings[client.name]["secret"]
2400
client.encrypted_secret = crypt.encrypt(client.secret,
2401
key)
3500
client.encrypted_secret = pgp.encrypt(client.secret,
3501
key)
2402
3502
client_dict = {}
2403
2404
# A list of attributes that will not be stored when
2405
# shutting down.
2406
exclude = set(("bus", "changedstate", "secret"))
2407
for name, typ in (inspect.getmembers
2408
(dbus.service.Object)):
3503
3504
# A list of attributes that can not be pickled
3505
# + secret.
3506
exclude = {"bus", "changedstate", "secret",
3507
"checker", "server_settings"}
3508
for name, typ in inspect.getmembers(dbus.service
3509
.Object):
2409
3510
exclude.add(name)
2410
3511
2411
3512
client_dict["encrypted_secret"] = (client
2412
3513
.encrypted_secret)
2413
3514
for attr in client.client_structure:
2414
3515
if attr not in exclude:
2415
3516
client_dict[attr] = getattr(client, attr)
2416
2417
clients.append(client_dict)
3517
3518
clients[client.name] = client_dict
2418
3519
del client_settings[client.name]["secret"]
2419
3520
2420
3521
try:
2421
with os.fdopen(os.open(stored_state_path,
2422
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2423
0600), "wb") as stored_state:
2424
pickle.dump((clients, client_settings), stored_state)
3522
with tempfile.NamedTemporaryFile(
3523
mode='wb',
3524
suffix=".pickle",
3525
prefix='clients-',
3526
dir=os.path.dirname(stored_state_path),
3527
delete=False) as stored_state:
3528
pickle.dump((clients, client_settings), stored_state,
3529
protocol=2)
3530
tempname = stored_state.name
3531
os.rename(tempname, stored_state_path)
2425
3532
except (IOError, OSError) as e:
2426
logger.warning("Could not save persistent state: {0}"
2427
.format(e))
2428
if e.errno not in (errno.ENOENT, errno.EACCES):
3533
if not debug:
3534
try:
3535
os.remove(tempname)
3536
except NameError:
3537
pass
3538
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3539
logger.warning("Could not save persistent state: {}"
3540
.format(os.strerror(e.errno)))
3541
else:
3542
logger.warning("Could not save persistent state:",
3543
exc_info=e)
2429
3544
raise
2430
3545
2431
3546
# Delete all clients, and settings from config
2432
3547
while tcp_server.clients:
2433
3548
name, client = tcp_server.clients.popitem()
2434
3549
if use_dbus:
2435
3550
client.remove_from_connection()
2436
# Don't signal anything except ClientRemoved
3551
# Don't signal the disabling
2437
3552
client.disable(quiet=True)
3553
# Emit D-Bus signal for removal
2438
3554
if use_dbus:
2439
# Emit D-Bus signal
2440
mandos_dbus_service.ClientRemoved(client
2441
.dbus_object_path,
2442
client.name)
3555
mandos_dbus_service.client_removed_signal(client)
2443
3556
client_settings.clear()
2444
3557
2445
3558
atexit.register(cleanup)
2446
2447
for client in tcp_server.clients.itervalues():
3559
3560
for client in tcp_server.clients.values():
2448
3561
if use_dbus:
2449
# Emit D-Bus signal
2450
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3562
# Emit D-Bus signal for adding
3563
mandos_dbus_service.client_added_signal(client)
2451
3564
# Need to initiate checking of clients
2452
3565
if client.enabled:
2453
3566
client.init_checker()
2454
3567
2455
3568
tcp_server.enable()
2456
3569
tcp_server.server_activate()
2457
3570
2458
3571
# Find out what port we got
2459
service.port = tcp_server.socket.getsockname()[1]
3572
if zeroconf:
3573
service.port = tcp_server.socket.getsockname()[1]
2460
3574
if use_ipv6:
2461
3575
logger.info("Now listening on address %r, port %d,"
2462
" flowinfo %d, scope_id %d"
2463
% tcp_server.socket.getsockname())
3576
" flowinfo %d, scope_id %d",
3577
*tcp_server.socket.getsockname())
2464
3578
else: # IPv4
2465
logger.info("Now listening on address %r, port %d"
2466
% tcp_server.socket.getsockname())
2467
2468
#service.interface = tcp_server.socket.getsockname()[3]
2469
3579
logger.info("Now listening on address %r, port %d",
3580
*tcp_server.socket.getsockname())
3581
3582
# service.interface = tcp_server.socket.getsockname()[3]
3583
2470
3584
try:
2471
# From the Avahi example code
2472
try:
2473
service.activate()
2474
except dbus.exceptions.DBusException as error:
2475
logger.critical("DBusException: %s", error)
2476
cleanup()
2477
sys.exit(1)
2478
# End of Avahi example code
2479
2480
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2481
lambda *args, **kwargs:
2482
(tcp_server.handle_request
2483
(*args[2:], **kwargs) or True))
2484
3585
if zeroconf:
3586
# From the Avahi example code
3587
try:
3588
service.activate()
3589
except dbus.exceptions.DBusException as error:
3590
logger.critical("D-Bus Exception", exc_info=error)
3591
cleanup()
3592
sys.exit(1)
3593
# End of Avahi example code
3594
3595
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3596
lambda *args, **kwargs:
3597
(tcp_server.handle_request
3598
(*args[2:], **kwargs) or True))
3599
2485
3600
logger.debug("Starting main loop")
2486
3601
main_loop.run()
2487
3602
except AvahiError as error:
2488
logger.critical("AvahiError: %s", error)
3603
logger.critical("Avahi Error", exc_info=error)
2489
3604
cleanup()
2490
3605
sys.exit(1)
2491
3606
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0