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- Committer: Teddy Hogeborn
- Date: 2011-11-29 19:25:06 UTC
- mto: (518.1.13 mandos-persistent)
- mto: This revision was merged to the branch mainline in revision 524.
- Revision ID: teddy@recompile.se-20111129192506-nifzr9eyvhtjl0ld
* mandos (ClientDBus.Host_dbus_property,
ClientDBus.Checker_dbus_property): Bug fix: force value to unicode.
(main): Bug fix: Corrected logic for enabling expired restored
clients.
ClientDBus.Checker_dbus_property): Bug fix: force value to unicode.
(main): Bug fix: Corrected logic for enabling expired restored
clients.
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
37
import SocketServer as socketserver
47
38
import socket
48
39
import argparse
49
40
import datetime
50
41
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
55
49
import sys
56
50
import re
57
51
import os
66
60
import struct
67
61
import fcntl
68
62
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
import cPickle as pickle
73
64
import multiprocessing
74
65
import types
75
66
import binascii
76
67
import tempfile
77
import itertools
78
import collections
79
import codecs
80
68
81
69
import dbus
82
70
import dbus.service
83
from gi.repository import GLib
71
import gobject
72
import avahi
84
73
from dbus.mainloop.glib import DBusGMainLoop
85
74
import ctypes
86
75
import ctypes.util
87
76
import xml.dom.minidom
88
77
import inspect
78
import GnuPGInterface
89
79
90
# Try to find the value of SO_BINDTODEVICE:
91
80
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
94
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
95
82
except AttributeError:
96
83
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
99
84
from IN import SO_BINDTODEVICE
100
85
except ImportError:
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
114
115
if sys.version_info.major == 2:
116
str = unicode
117
118
version = "1.7.20"
86
SO_BINDTODEVICE = None
87
88
89
version = "1.4.1"
119
90
stored_state_file = "clients.pickle"
120
91
121
92
logger = logging.getLogger()
122
syslogger = None
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
123
96
124
97
try:
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
127
101
except (OSError, AttributeError):
128
129
102
def if_nametoindex(interface):
130
103
"Get an interface index the hard way, i.e. using fcntl()"
131
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
132
105
with contextlib.closing(socket.socket()) as s:
133
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
136
111
return interface_index
137
112
138
113
139
def copy_function(func):
140
"""Make a copy of a function"""
141
if sys.version_info.major == 2:
142
return types.FunctionType(func.func_code,
143
func.func_globals,
144
func.func_name,
145
func.func_defaults,
146
func.func_closure)
147
else:
148
return types.FunctionType(func.__code__,
149
func.__globals__,
150
func.__name__,
151
func.__defaults__,
152
func.__closure__)
153
154
155
def initlogger(debug, level=logging.WARNING):
114
def initlogger(level=logging.WARNING):
156
115
"""init logger and add loglevel"""
157
158
global syslogger
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
116
162
117
syslogger.setFormatter(logging.Formatter
163
118
('Mandos [%(process)d]: %(levelname)s:'
164
119
' %(message)s'))
165
120
logger.addHandler(syslogger)
166
167
if debug:
168
console = logging.StreamHandler()
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
170
' [%(process)d]:'
171
' %(levelname)s:'
172
' %(message)s'))
173
logger.addHandler(console)
121
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
124
' [%(process)d]:'
125
' %(levelname)s:'
126
' %(message)s'))
127
logger.addHandler(console)
174
128
logger.setLevel(level)
175
129
176
130
181
135
182
136
class PGPEngine(object):
183
137
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
185
138
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
186
140
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
187
self.gpg = "gpg"
188
try:
189
output = subprocess.check_output(["gpgconf"])
190
for line in output.splitlines():
191
name, text, path = line.split(b":")
192
if name == "gpg":
193
self.gpg = path
194
break
195
except OSError as e:
196
if e.errno != errno.ENOENT:
197
raise
198
self.gnupgargs = ['--batch',
199
'--homedir', self.tempdir,
200
'--force-mdc',
201
'--quiet']
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
205
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet'])
146
206
147
def __enter__(self):
207
148
return self
208
209
def __exit__(self, exc_type, exc_value, traceback):
149
150
def __exit__ (self, exc_type, exc_value, traceback):
210
151
self._cleanup()
211
152
return False
212
153
213
154
def __del__(self):
214
155
self._cleanup()
215
156
216
157
def _cleanup(self):
217
158
if self.tempdir is not None:
218
159
# Delete contents of tempdir
219
160
for root, dirs, files in os.walk(self.tempdir,
220
topdown=False):
161
topdown = False):
221
162
for filename in files:
222
163
os.remove(os.path.join(root, filename))
223
164
for dirname in dirs:
225
166
# Remove tempdir
226
167
os.rmdir(self.tempdir)
227
168
self.tempdir = None
228
169
229
170
def password_encode(self, password):
230
171
# Passphrase can not be empty and can not contain newlines or
231
172
# NUL bytes. So we prefix it and hex encode it.
232
encoded = b"mandos" + binascii.hexlify(password)
233
if len(encoded) > 2048:
234
# GnuPG can't handle long passwords, so encode differently
235
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
236
.replace(b"\n", b"\\n")
237
.replace(b"\0", b"\\x00"))
238
return encoded
239
173
return b"mandos" + binascii.hexlify(password)
174
240
175
def encrypt(self, data, password):
241
passphrase = self.password_encode(password)
242
with tempfile.NamedTemporaryFile(
243
dir=self.tempdir) as passfile:
244
passfile.write(passphrase)
245
passfile.flush()
246
proc = subprocess.Popen([self.gpg, '--symmetric',
247
'--passphrase-file',
248
passfile.name]
249
+ self.gnupgargs,
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
254
if proc.returncode != 0:
255
raise PGPError(err)
176
self.gnupg.passphrase = self.password_encode(password)
177
with open(os.devnull) as devnull:
178
try:
179
proc = self.gnupg.run(['--symmetric'],
180
create_fhs=['stdin', 'stdout'],
181
attach_fhs={'stderr': devnull})
182
with contextlib.closing(proc.handles['stdin']) as f:
183
f.write(data)
184
with contextlib.closing(proc.handles['stdout']) as f:
185
ciphertext = f.read()
186
proc.wait()
187
except IOError as e:
188
raise PGPError(e)
189
self.gnupg.passphrase = None
256
190
return ciphertext
257
191
258
192
def decrypt(self, data, password):
259
passphrase = self.password_encode(password)
260
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
262
passfile.write(passphrase)
263
passfile.flush()
264
proc = subprocess.Popen([self.gpg, '--decrypt',
265
'--passphrase-file',
266
passfile.name]
267
+ self.gnupgargs,
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
272
if proc.returncode != 0:
273
raise PGPError(err)
193
self.gnupg.passphrase = self.password_encode(password)
194
with open(os.devnull) as devnull:
195
try:
196
proc = self.gnupg.run(['--decrypt'],
197
create_fhs=['stdin', 'stdout'],
198
attach_fhs={'stderr': devnull})
199
with contextlib.closing(proc.handles['stdin'] ) as f:
200
f.write(data)
201
with contextlib.closing(proc.handles['stdout']) as f:
202
decrypted_plaintext = f.read()
203
proc.wait()
204
except IOError as e:
205
raise PGPError(e)
206
self.gnupg.passphrase = None
274
207
return decrypted_plaintext
275
208
276
209
277
# Pretend that we have an Avahi module
278
class Avahi(object):
279
"""This isn't so much a class as it is a module-like namespace.
280
It is instantiated once, and simulates having an Avahi module."""
281
IF_UNSPEC = -1 # avahi-common/address.h
282
PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
285
DBUS_NAME = "org.freedesktop.Avahi"
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
DBUS_PATH_SERVER = "/"
289
290
def string_array_to_txt_array(self, t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
avahi = Avahi()
302
303
210
304
211
class AvahiError(Exception):
305
212
def __init__(self, value, *args, **kwargs):
306
213
self.value = value
307
return super(AvahiError, self).__init__(value, *args,
308
**kwargs)
309
214
super(AvahiError, self).__init__(value, *args, **kwargs)
215
def __unicode__(self):
216
return unicode(repr(self.value))
310
217
311
218
class AvahiServiceError(AvahiError):
312
219
pass
313
220
314
315
221
class AvahiGroupError(AvahiError):
316
222
pass
317
223
318
224
319
225
class AvahiService(object):
320
226
"""An Avahi (Zeroconf) service.
321
227
322
228
Attributes:
323
229
interface: integer; avahi.IF_UNSPEC or an interface index.
324
230
Used to optionally bind to the specified interface.
325
231
name: string; Example: 'Mandos'
326
232
type: string; Example: '_mandos._tcp'.
327
See <https://www.iana.org/assignments/service-names-port-numbers>
233
See <http://www.dns-sd.org/ServiceTypes.html>
328
234
port: integer; what port to announce
329
235
TXT: list of strings; TXT record for the service
330
236
domain: string; Domain to publish on, default to .local if empty.
336
242
server: D-Bus Server
337
243
bus: dbus.SystemBus()
338
244
"""
339
340
def __init__(self,
341
interface=avahi.IF_UNSPEC,
342
name=None,
343
servicetype=None,
344
port=None,
345
TXT=None,
346
domain="",
347
host="",
348
max_renames=32768,
349
protocol=avahi.PROTO_UNSPEC,
350
bus=None):
245
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
246
servicetype = None, port = None, TXT = None,
247
domain = "", host = "", max_renames = 32768,
248
protocol = avahi.PROTO_UNSPEC, bus = None):
351
249
self.interface = interface
352
250
self.name = name
353
251
self.type = servicetype
362
260
self.server = None
363
261
self.bus = bus
364
262
self.entry_group_state_changed_match = None
365
366
def rename(self, remove=True):
263
def rename(self):
367
264
"""Derived from the Avahi example code"""
368
265
if self.rename_count >= self.max_renames:
369
266
logger.critical("No suitable Zeroconf service name found"
370
267
" after %i retries, exiting.",
371
268
self.rename_count)
372
269
raise AvahiServiceError("Too many renames")
373
self.name = str(
374
self.server.GetAlternativeServiceName(self.name))
375
self.rename_count += 1
270
self.name = unicode(self.server
271
.GetAlternativeServiceName(self.name))
376
272
logger.info("Changing Zeroconf service name to %r ...",
377
273
self.name)
378
if remove:
379
self.remove()
274
self.remove()
380
275
try:
381
276
self.add()
382
277
except dbus.exceptions.DBusException as error:
383
if (error.get_dbus_name()
384
== "org.freedesktop.Avahi.CollisionError"):
385
logger.info("Local Zeroconf service name collision.")
386
return self.rename(remove=False)
387
else:
388
logger.critical("D-Bus Exception", exc_info=error)
389
self.cleanup()
390
os._exit(1)
391
278
logger.critical("DBusException: %s", error)
279
self.cleanup()
280
os._exit(1)
281
self.rename_count += 1
392
282
def remove(self):
393
283
"""Derived from the Avahi example code"""
394
284
if self.entry_group_state_changed_match is not None:
396
286
self.entry_group_state_changed_match = None
397
287
if self.group is not None:
398
288
self.group.Reset()
399
400
289
def add(self):
401
290
"""Derived from the Avahi example code"""
402
291
self.remove()
419
308
dbus.UInt16(self.port),
420
309
avahi.string_array_to_txt_array(self.TXT))
421
310
self.group.Commit()
422
423
311
def entry_group_state_changed(self, state, error):
424
312
"""Derived from the Avahi example code"""
425
313
logger.debug("Avahi entry group state change: %i", state)
426
314
427
315
if state == avahi.ENTRY_GROUP_ESTABLISHED:
428
316
logger.debug("Zeroconf service established.")
429
317
elif state == avahi.ENTRY_GROUP_COLLISION:
431
319
self.rename()
432
320
elif state == avahi.ENTRY_GROUP_FAILURE:
433
321
logger.critical("Avahi: Error in group state changed %s",
434
str(error))
435
raise AvahiGroupError("State changed: {!s}".format(error))
436
322
unicode(error))
323
raise AvahiGroupError("State changed: %s"
324
% unicode(error))
437
325
def cleanup(self):
438
326
"""Derived from the Avahi example code"""
439
327
if self.group is not None:
444
332
pass
445
333
self.group = None
446
334
self.remove()
447
448
335
def server_state_changed(self, state, error=None):
449
336
"""Derived from the Avahi example code"""
450
337
logger.debug("Avahi server state change: %i", state)
451
bad_states = {
452
avahi.SERVER_INVALID: "Zeroconf server invalid",
453
avahi.SERVER_REGISTERING: None,
454
avahi.SERVER_COLLISION: "Zeroconf server name collision",
455
avahi.SERVER_FAILURE: "Zeroconf server failure",
456
}
338
bad_states = { avahi.SERVER_INVALID:
339
"Zeroconf server invalid",
340
avahi.SERVER_REGISTERING: None,
341
avahi.SERVER_COLLISION:
342
"Zeroconf server name collision",
343
avahi.SERVER_FAILURE:
344
"Zeroconf server failure" }
457
345
if state in bad_states:
458
346
if bad_states[state] is not None:
459
347
if error is None:
462
350
logger.error(bad_states[state] + ": %r", error)
463
351
self.cleanup()
464
352
elif state == avahi.SERVER_RUNNING:
465
try:
466
self.add()
467
except dbus.exceptions.DBusException as error:
468
if (error.get_dbus_name()
469
== "org.freedesktop.Avahi.CollisionError"):
470
logger.info("Local Zeroconf service name"
471
" collision.")
472
return self.rename(remove=False)
473
else:
474
logger.critical("D-Bus Exception", exc_info=error)
475
self.cleanup()
476
os._exit(1)
353
self.add()
477
354
else:
478
355
if error is None:
479
356
logger.debug("Unknown state: %r", state)
480
357
else:
481
358
logger.debug("Unknown state: %r: %r", state, error)
482
483
359
def activate(self):
484
360
"""Derived from the Avahi example code"""
485
361
if self.server is None:
489
365
follow_name_owner_changes=True),
490
366
avahi.DBUS_INTERFACE_SERVER)
491
367
self.server.connect_to_signal("StateChanged",
492
self.server_state_changed)
368
self.server_state_changed)
493
369
self.server_state_changed(self.server.GetState())
494
370
495
496
371
class AvahiServiceToSyslog(AvahiService):
497
def rename(self, *args, **kwargs):
372
def rename(self):
498
373
"""Add the new name to the syslog messages"""
499
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
500
syslogger.setFormatter(logging.Formatter(
501
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
502
.format(self.name)))
374
ret = AvahiService.rename(self)
375
syslogger.setFormatter(logging.Formatter
376
('Mandos (%s) [%%(process)d]:'
377
' %%(levelname)s: %%(message)s'
378
% self.name))
503
379
return ret
504
380
505
506
# Pretend that we have a GnuTLS module
507
class GnuTLS(object):
508
"""This isn't so much a class as it is a module-like namespace.
509
It is instantiated once, and simulates having a GnuTLS module."""
510
511
library = ctypes.util.find_library("gnutls")
512
if library is None:
513
library = ctypes.util.find_library("gnutls-deb0")
514
_library = ctypes.cdll.LoadLibrary(library)
515
del library
516
_need_version = b"3.3.0"
517
_tls_rawpk_version = b"3.6.6"
518
519
def __init__(self):
520
# Need to use "self" here, since this method is called before
521
# the assignment to the "gnutls" global variable happens.
522
if self.check_version(self._need_version) is None:
523
raise self.Error("Needs GnuTLS {} or later"
524
.format(self._need_version))
525
526
# Unless otherwise indicated, the constants and types below are
527
# all from the gnutls/gnutls.h C header file.
528
529
# Constants
530
E_SUCCESS = 0
531
E_INTERRUPTED = -52
532
E_AGAIN = -28
533
CRT_OPENPGP = 2
534
CRT_RAWPK = 3
535
CLIENT = 2
536
SHUT_RDWR = 0
537
CRD_CERTIFICATE = 1
538
E_NO_CERTIFICATE_FOUND = -49
539
X509_FMT_DER = 0
540
NO_TICKETS = 1<<10
541
ENABLE_RAWPK = 1<<18
542
CTYPE_PEERS = 3
543
KEYID_USE_SHA256 = 1 # gnutls/x509.h
544
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
545
546
# Types
547
class session_int(ctypes.Structure):
548
_fields_ = []
549
session_t = ctypes.POINTER(session_int)
550
551
class certificate_credentials_st(ctypes.Structure):
552
_fields_ = []
553
certificate_credentials_t = ctypes.POINTER(
554
certificate_credentials_st)
555
certificate_type_t = ctypes.c_int
556
557
class datum_t(ctypes.Structure):
558
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
559
('size', ctypes.c_uint)]
560
561
class openpgp_crt_int(ctypes.Structure):
562
_fields_ = []
563
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
564
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
565
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
566
credentials_type_t = ctypes.c_int
567
transport_ptr_t = ctypes.c_void_p
568
close_request_t = ctypes.c_int
569
570
# Exceptions
571
class Error(Exception):
572
# We need to use the class name "GnuTLS" here, since this
573
# exception might be raised from within GnuTLS.__init__,
574
# which is called before the assignment to the "gnutls"
575
# global variable has happened.
576
def __init__(self, message=None, code=None, args=()):
577
# Default usage is by a message string, but if a return
578
# code is passed, convert it to a string with
579
# gnutls.strerror()
580
self.code = code
581
if message is None and code is not None:
582
message = GnuTLS.strerror(code)
583
return super(GnuTLS.Error, self).__init__(
584
message, *args)
585
586
class CertificateSecurityError(Error):
587
pass
588
589
# Classes
590
class Credentials(object):
591
def __init__(self):
592
self._c_object = gnutls.certificate_credentials_t()
593
gnutls.certificate_allocate_credentials(
594
ctypes.byref(self._c_object))
595
self.type = gnutls.CRD_CERTIFICATE
596
597
def __del__(self):
598
gnutls.certificate_free_credentials(self._c_object)
599
600
class ClientSession(object):
601
def __init__(self, socket, credentials=None):
602
self._c_object = gnutls.session_t()
603
gnutls_flags = gnutls.CLIENT
604
if gnutls.check_version("3.5.6"):
605
gnutls_flags |= gnutls.NO_TICKETS
606
if gnutls.has_rawpk:
607
gnutls_flags |= gnutls.ENABLE_RAWPK
608
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
609
del gnutls_flags
610
gnutls.set_default_priority(self._c_object)
611
gnutls.transport_set_ptr(self._c_object, socket.fileno())
612
gnutls.handshake_set_private_extensions(self._c_object,
613
True)
614
self.socket = socket
615
if credentials is None:
616
credentials = gnutls.Credentials()
617
gnutls.credentials_set(self._c_object, credentials.type,
618
ctypes.cast(credentials._c_object,
619
ctypes.c_void_p))
620
self.credentials = credentials
621
622
def __del__(self):
623
gnutls.deinit(self._c_object)
624
625
def handshake(self):
626
return gnutls.handshake(self._c_object)
627
628
def send(self, data):
629
data = bytes(data)
630
data_len = len(data)
631
while data_len > 0:
632
data_len -= gnutls.record_send(self._c_object,
633
data[-data_len:],
634
data_len)
635
636
def bye(self):
637
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
638
639
# Error handling functions
640
def _error_code(result):
641
"""A function to raise exceptions on errors, suitable
642
for the 'restype' attribute on ctypes functions"""
643
if result >= 0:
644
return result
645
if result == gnutls.E_NO_CERTIFICATE_FOUND:
646
raise gnutls.CertificateSecurityError(code=result)
647
raise gnutls.Error(code=result)
648
649
def _retry_on_error(result, func, arguments):
650
"""A function to retry on some errors, suitable
651
for the 'errcheck' attribute on ctypes functions"""
652
while result < 0:
653
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
654
return _error_code(result)
655
result = func(*arguments)
656
return result
657
658
# Unless otherwise indicated, the function declarations below are
659
# all from the gnutls/gnutls.h C header file.
660
661
# Functions
662
priority_set_direct = _library.gnutls_priority_set_direct
663
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
664
ctypes.POINTER(ctypes.c_char_p)]
665
priority_set_direct.restype = _error_code
666
667
init = _library.gnutls_init
668
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
669
init.restype = _error_code
670
671
set_default_priority = _library.gnutls_set_default_priority
672
set_default_priority.argtypes = [session_t]
673
set_default_priority.restype = _error_code
674
675
record_send = _library.gnutls_record_send
676
record_send.argtypes = [session_t, ctypes.c_void_p,
677
ctypes.c_size_t]
678
record_send.restype = ctypes.c_ssize_t
679
record_send.errcheck = _retry_on_error
680
681
certificate_allocate_credentials = (
682
_library.gnutls_certificate_allocate_credentials)
683
certificate_allocate_credentials.argtypes = [
684
ctypes.POINTER(certificate_credentials_t)]
685
certificate_allocate_credentials.restype = _error_code
686
687
certificate_free_credentials = (
688
_library.gnutls_certificate_free_credentials)
689
certificate_free_credentials.argtypes = [
690
certificate_credentials_t]
691
certificate_free_credentials.restype = None
692
693
handshake_set_private_extensions = (
694
_library.gnutls_handshake_set_private_extensions)
695
handshake_set_private_extensions.argtypes = [session_t,
696
ctypes.c_int]
697
handshake_set_private_extensions.restype = None
698
699
credentials_set = _library.gnutls_credentials_set
700
credentials_set.argtypes = [session_t, credentials_type_t,
701
ctypes.c_void_p]
702
credentials_set.restype = _error_code
703
704
strerror = _library.gnutls_strerror
705
strerror.argtypes = [ctypes.c_int]
706
strerror.restype = ctypes.c_char_p
707
708
certificate_type_get = _library.gnutls_certificate_type_get
709
certificate_type_get.argtypes = [session_t]
710
certificate_type_get.restype = _error_code
711
712
certificate_get_peers = _library.gnutls_certificate_get_peers
713
certificate_get_peers.argtypes = [session_t,
714
ctypes.POINTER(ctypes.c_uint)]
715
certificate_get_peers.restype = ctypes.POINTER(datum_t)
716
717
global_set_log_level = _library.gnutls_global_set_log_level
718
global_set_log_level.argtypes = [ctypes.c_int]
719
global_set_log_level.restype = None
720
721
global_set_log_function = _library.gnutls_global_set_log_function
722
global_set_log_function.argtypes = [log_func]
723
global_set_log_function.restype = None
724
725
deinit = _library.gnutls_deinit
726
deinit.argtypes = [session_t]
727
deinit.restype = None
728
729
handshake = _library.gnutls_handshake
730
handshake.argtypes = [session_t]
731
handshake.restype = _error_code
732
handshake.errcheck = _retry_on_error
733
734
transport_set_ptr = _library.gnutls_transport_set_ptr
735
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
736
transport_set_ptr.restype = None
737
738
bye = _library.gnutls_bye
739
bye.argtypes = [session_t, close_request_t]
740
bye.restype = _error_code
741
bye.errcheck = _retry_on_error
742
743
check_version = _library.gnutls_check_version
744
check_version.argtypes = [ctypes.c_char_p]
745
check_version.restype = ctypes.c_char_p
746
747
has_rawpk = bool(check_version(_tls_rawpk_version))
748
749
if has_rawpk:
750
# Types
751
class pubkey_st(ctypes.Structure):
752
_fields = []
753
pubkey_t = ctypes.POINTER(pubkey_st)
754
755
x509_crt_fmt_t = ctypes.c_int
756
757
# All the function declarations below are from gnutls/abstract.h
758
pubkey_init = _library.gnutls_pubkey_init
759
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
760
pubkey_init.restype = _error_code
761
762
pubkey_import = _library.gnutls_pubkey_import
763
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
764
x509_crt_fmt_t]
765
pubkey_import.restype = _error_code
766
767
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
768
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
769
ctypes.POINTER(ctypes.c_ubyte),
770
ctypes.POINTER(ctypes.c_size_t)]
771
pubkey_get_key_id.restype = _error_code
772
773
pubkey_deinit = _library.gnutls_pubkey_deinit
774
pubkey_deinit.argtypes = [pubkey_t]
775
pubkey_deinit.restype = None
776
else:
777
# All the function declarations below are from gnutls/openpgp.h
778
779
openpgp_crt_init = _library.gnutls_openpgp_crt_init
780
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
781
openpgp_crt_init.restype = _error_code
782
783
openpgp_crt_import = _library.gnutls_openpgp_crt_import
784
openpgp_crt_import.argtypes = [openpgp_crt_t,
785
ctypes.POINTER(datum_t),
786
openpgp_crt_fmt_t]
787
openpgp_crt_import.restype = _error_code
788
789
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
790
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
791
ctypes.POINTER(ctypes.c_uint)]
792
openpgp_crt_verify_self.restype = _error_code
793
794
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
795
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
796
openpgp_crt_deinit.restype = None
797
798
openpgp_crt_get_fingerprint = (
799
_library.gnutls_openpgp_crt_get_fingerprint)
800
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
801
ctypes.c_void_p,
802
ctypes.POINTER(
803
ctypes.c_size_t)]
804
openpgp_crt_get_fingerprint.restype = _error_code
805
806
if check_version("3.6.4"):
807
certificate_type_get2 = _library.gnutls_certificate_type_get2
808
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
809
certificate_type_get2.restype = _error_code
810
811
# Remove non-public functions
812
del _error_code, _retry_on_error
813
# Create the global "gnutls" object, simulating a module
814
gnutls = GnuTLS()
815
816
817
def call_pipe(connection, # : multiprocessing.Connection
818
func, *args, **kwargs):
819
"""This function is meant to be called by multiprocessing.Process
820
821
This function runs func(*args, **kwargs), and writes the resulting
822
return value on the provided multiprocessing.Connection.
823
"""
824
connection.send(func(*args, **kwargs))
825
connection.close()
826
827
381
def timedelta_to_milliseconds(td):
382
"Convert a datetime.timedelta() to milliseconds"
383
return ((td.days * 24 * 60 * 60 * 1000)
384
+ (td.seconds * 1000)
385
+ (td.microseconds // 1000))
386
828
387
class Client(object):
829
388
"""A representation of a client host served by this server.
830
389
831
390
Attributes:
832
391
approved: bool(); 'None' if not yet approved/disapproved
833
392
approval_delay: datetime.timedelta(); Time to wait for approval
835
394
checker: subprocess.Popen(); a running checker process used
836
395
to see if the client lives.
837
396
'None' if no process is running.
838
checker_callback_tag: a GLib event source tag, or None
397
checker_callback_tag: a gobject event source tag, or None
839
398
checker_command: string; External command which is run to check
840
399
if client lives. %() expansions are done at
841
400
runtime with vars(self) as dict, so that for
842
401
instance %(name)s can be used in the command.
843
checker_initiator_tag: a GLib event source tag, or None
402
checker_initiator_tag: a gobject event source tag, or None
844
403
created: datetime.datetime(); (UTC) object creation
845
404
client_structure: Object describing what attributes a client has
846
405
and is used for storing the client at exit
847
406
current_checker_command: string; current running checker_command
848
disable_initiator_tag: a GLib event source tag, or None
407
disable_initiator_tag: a gobject event source tag, or None
849
408
enabled: bool()
850
409
fingerprint: string (40 or 32 hexadecimal digits); used to
851
uniquely identify an OpenPGP client
852
key_id: string (64 hexadecimal digits); used to uniquely identify
853
a client using raw public keys
410
uniquely identify the client
854
411
host: string; available for use by the checker command
855
412
interval: datetime.timedelta(); How often to start a new checker
856
413
last_approval_request: datetime.datetime(); (UTC) or None
857
414
last_checked_ok: datetime.datetime(); (UTC) or None
415
858
416
last_checker_status: integer between 0 and 255 reflecting exit
859
417
status of last checker. -1 reflects crashed
860
checker, -2 means no checker completed yet.
861
last_checker_signal: The signal which killed the last checker, if
862
last_checker_status is -1
418
checker, or None.
863
419
last_enabled: datetime.datetime(); (UTC) or None
864
420
name: string; from the config file, used in log messages and
865
421
D-Bus identifiers
866
422
secret: bytestring; sent verbatim (over TLS) to client
867
423
timeout: datetime.timedelta(); How long from last_checked_ok
868
424
until this client is disabled
869
extended_timeout: extra long timeout when secret has been sent
425
extended_timeout: extra long timeout when password has been sent
870
426
runtime_expansions: Allowed attributes for runtime expansion.
871
427
expires: datetime.datetime(); time (UTC) when a client will be
872
428
disabled, or None
873
server_settings: The server_settings dict from main()
874
429
"""
875
430
876
431
runtime_expansions = ("approval_delay", "approval_duration",
877
"created", "enabled", "expires", "key_id",
878
"fingerprint", "host", "interval",
879
"last_approval_request", "last_checked_ok",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
880
434
"last_enabled", "name", "timeout")
881
client_defaults = {
882
"timeout": "PT5M",
883
"extended_timeout": "PT15M",
884
"interval": "PT2M",
885
"checker": "fping -q -- %%(host)s",
886
"host": "",
887
"approval_delay": "PT0S",
888
"approval_duration": "PT1S",
889
"approved_by_default": "True",
890
"enabled": "True",
891
}
892
893
@staticmethod
894
def config_parser(config):
895
"""Construct a new dict of client settings of this form:
896
{ client_name: {setting_name: value, ...}, ...}
897
with exceptions for any special settings as defined above.
898
NOTE: Must be a pure function. Must return the same result
899
value given the same arguments.
900
"""
901
settings = {}
902
for client_name in config.sections():
903
section = dict(config.items(client_name))
904
client = settings[client_name] = {}
905
906
client["host"] = section["host"]
907
# Reformat values from string types to Python types
908
client["approved_by_default"] = config.getboolean(
909
client_name, "approved_by_default")
910
client["enabled"] = config.getboolean(client_name,
911
"enabled")
912
913
# Uppercase and remove spaces from key_id and fingerprint
914
# for later comparison purposes with return value from the
915
# key_id() and fingerprint() functions
916
client["key_id"] = (section.get("key_id", "").upper()
917
.replace(" ", ""))
918
client["fingerprint"] = (section["fingerprint"].upper()
919
.replace(" ", ""))
920
if "secret" in section:
921
client["secret"] = codecs.decode(section["secret"]
922
.encode("utf-8"),
923
"base64")
924
elif "secfile" in section:
925
with open(os.path.expanduser(os.path.expandvars
926
(section["secfile"])),
927
"rb") as secfile:
928
client["secret"] = secfile.read()
929
else:
930
raise TypeError("No secret or secfile for section {}"
931
.format(section))
932
client["timeout"] = string_to_delta(section["timeout"])
933
client["extended_timeout"] = string_to_delta(
934
section["extended_timeout"])
935
client["interval"] = string_to_delta(section["interval"])
936
client["approval_delay"] = string_to_delta(
937
section["approval_delay"])
938
client["approval_duration"] = string_to_delta(
939
section["approval_duration"])
940
client["checker_command"] = section["checker"]
941
client["last_approval_request"] = None
942
client["last_checked_ok"] = None
943
client["last_checker_status"] = -2
944
945
return settings
946
947
def __init__(self, settings, name=None, server_settings=None):
435
436
def timeout_milliseconds(self):
437
"Return the 'timeout' attribute in milliseconds"
438
return timedelta_to_milliseconds(self.timeout)
439
440
def extended_timeout_milliseconds(self):
441
"Return the 'extended_timeout' attribute in milliseconds"
442
return timedelta_to_milliseconds(self.extended_timeout)
443
444
def interval_milliseconds(self):
445
"Return the 'interval' attribute in milliseconds"
446
return timedelta_to_milliseconds(self.interval)
447
448
def approval_delay_milliseconds(self):
449
return timedelta_to_milliseconds(self.approval_delay)
450
451
def __init__(self, name = None, config=None):
452
"""Note: the 'checker' key in 'config' sets the
453
'checker_command' attribute and *not* the 'checker'
454
attribute."""
948
455
self.name = name
949
if server_settings is None:
950
server_settings = {}
951
self.server_settings = server_settings
952
# adding all client settings
953
for setting, value in settings.items():
954
setattr(self, setting, value)
955
956
if self.enabled:
957
if not hasattr(self, "last_enabled"):
958
self.last_enabled = datetime.datetime.utcnow()
959
if not hasattr(self, "expires"):
960
self.expires = (datetime.datetime.utcnow()
961
+ self.timeout)
962
else:
963
self.last_enabled = None
964
self.expires = None
965
456
if config is None:
457
config = {}
966
458
logger.debug("Creating client %r", self.name)
967
logger.debug(" Key ID: %s", self.key_id)
459
# Uppercase and remove spaces from fingerprint for later
460
# comparison purposes with return value from the fingerprint()
461
# function
462
self.fingerprint = (config["fingerprint"].upper()
463
.replace(" ", ""))
968
464
logger.debug(" Fingerprint: %s", self.fingerprint)
969
self.created = settings.get("created",
970
datetime.datetime.utcnow())
971
972
# attributes specific for this server instance
465
if "secret" in config:
466
self.secret = config["secret"].decode("base64")
467
elif "secfile" in config:
468
with open(os.path.expanduser(os.path.expandvars
469
(config["secfile"])),
470
"rb") as secfile:
471
self.secret = secfile.read()
472
else:
473
raise TypeError("No secret or secfile for client %s"
474
% self.name)
475
self.host = config.get("host", "")
476
self.created = datetime.datetime.utcnow()
477
self.enabled = config.get("enabled", True)
478
self.last_approval_request = None
479
if self.enabled:
480
self.last_enabled = datetime.datetime.utcnow()
481
else:
482
self.last_enabled = None
483
self.last_checked_ok = None
484
self.last_checker_status = None
485
self.timeout = string_to_delta(config["timeout"])
486
self.extended_timeout = string_to_delta(config
487
["extended_timeout"])
488
self.interval = string_to_delta(config["interval"])
973
489
self.checker = None
974
490
self.checker_initiator_tag = None
975
491
self.disable_initiator_tag = None
492
if self.enabled:
493
self.expires = datetime.datetime.utcnow() + self.timeout
494
else:
495
self.expires = None
976
496
self.checker_callback_tag = None
497
self.checker_command = config["checker"]
977
498
self.current_checker_command = None
978
499
self.approved = None
500
self.approved_by_default = config.get("approved_by_default",
501
True)
979
502
self.approvals_pending = 0
980
self.changedstate = multiprocessing_manager.Condition(
981
multiprocessing_manager.Lock())
982
self.client_structure = [attr
983
for attr in self.__dict__.keys()
503
self.approval_delay = string_to_delta(
504
config["approval_delay"])
505
self.approval_duration = string_to_delta(
506
config["approval_duration"])
507
self.changedstate = (multiprocessing_manager
508
.Condition(multiprocessing_manager
509
.Lock()))
510
self.client_structure = [attr for attr in
511
self.__dict__.iterkeys()
984
512
if not attr.startswith("_")]
985
513
self.client_structure.append("client_structure")
986
987
for name, t in inspect.getmembers(
988
type(self), lambda obj: isinstance(obj, property)):
514
515
for name, t in inspect.getmembers(type(self),
516
lambda obj:
517
isinstance(obj,
518
property)):
989
519
if not name.startswith("_"):
990
520
self.client_structure.append(name)
991
521
992
522
# Send notice to process children that client state has changed
993
523
def send_changedstate(self):
994
524
with self.changedstate:
995
525
self.changedstate.notify_all()
996
526
997
527
def enable(self):
998
528
"""Start this client's checker and timeout hooks"""
999
529
if getattr(self, "enabled", False):
1000
530
# Already enabled
1001
531
return
532
self.send_changedstate()
1002
533
self.expires = datetime.datetime.utcnow() + self.timeout
1003
534
self.enabled = True
1004
535
self.last_enabled = datetime.datetime.utcnow()
1005
536
self.init_checker()
1006
self.send_changedstate()
1007
537
1008
538
def disable(self, quiet=True):
1009
539
"""Disable this client."""
1010
540
if not getattr(self, "enabled", False):
1011
541
return False
1012
542
if not quiet:
543
self.send_changedstate()
544
if not quiet:
1013
545
logger.info("Disabling client %s", self.name)
1014
if getattr(self, "disable_initiator_tag", None) is not None:
1015
GLib.source_remove(self.disable_initiator_tag)
546
if getattr(self, "disable_initiator_tag", False):
547
gobject.source_remove(self.disable_initiator_tag)
1016
548
self.disable_initiator_tag = None
1017
549
self.expires = None
1018
if getattr(self, "checker_initiator_tag", None) is not None:
1019
GLib.source_remove(self.checker_initiator_tag)
550
if getattr(self, "checker_initiator_tag", False):
551
gobject.source_remove(self.checker_initiator_tag)
1020
552
self.checker_initiator_tag = None
1021
553
self.stop_checker()
1022
554
self.enabled = False
1023
if not quiet:
1024
self.send_changedstate()
1025
# Do not run this again if called by a GLib.timeout_add
555
# Do not run this again if called by a gobject.timeout_add
1026
556
return False
1027
557
1028
558
def __del__(self):
1029
559
self.disable()
1030
560
1031
561
def init_checker(self):
1032
562
# Schedule a new checker to be started an 'interval' from now,
1033
563
# and every interval from then on.
1034
if self.checker_initiator_tag is not None:
1035
GLib.source_remove(self.checker_initiator_tag)
1036
self.checker_initiator_tag = GLib.timeout_add(
1037
int(self.interval.total_seconds() * 1000),
1038
self.start_checker)
564
self.checker_initiator_tag = (gobject.timeout_add
565
(self.interval_milliseconds(),
566
self.start_checker))
1039
567
# Schedule a disable() when 'timeout' has passed
1040
if self.disable_initiator_tag is not None:
1041
GLib.source_remove(self.disable_initiator_tag)
1042
self.disable_initiator_tag = GLib.timeout_add(
1043
int(self.timeout.total_seconds() * 1000), self.disable)
568
self.disable_initiator_tag = (gobject.timeout_add
569
(self.timeout_milliseconds(),
570
self.disable))
1044
571
# Also start a new checker *right now*.
1045
572
self.start_checker()
1046
1047
def checker_callback(self, source, condition, connection,
1048
command):
573
574
def checker_callback(self, pid, condition, command):
1049
575
"""The checker has completed, so take appropriate actions."""
1050
576
self.checker_callback_tag = None
1051
577
self.checker = None
1052
# Read return code from connection (see call_pipe)
1053
returncode = connection.recv()
1054
connection.close()
1055
1056
if returncode >= 0:
1057
self.last_checker_status = returncode
1058
self.last_checker_signal = None
578
if os.WIFEXITED(condition):
579
self.last_checker_status = os.WEXITSTATUS(condition)
1059
580
if self.last_checker_status == 0:
1060
581
logger.info("Checker for %(name)s succeeded",
1061
582
vars(self))
1062
583
self.checked_ok()
1063
584
else:
1064
logger.info("Checker for %(name)s failed", vars(self))
585
logger.info("Checker for %(name)s failed",
586
vars(self))
1065
587
else:
1066
588
self.last_checker_status = -1
1067
self.last_checker_signal = -returncode
1068
589
logger.warning("Checker for %(name)s crashed?",
1069
590
vars(self))
1070
return False
1071
1072
def checked_ok(self):
1073
"""Assert that the client has been seen, alive and well."""
1074
self.last_checked_ok = datetime.datetime.utcnow()
1075
self.last_checker_status = 0
1076
self.last_checker_signal = None
1077
self.bump_timeout()
1078
1079
def bump_timeout(self, timeout=None):
1080
"""Bump up the timeout for this client."""
591
592
def checked_ok(self, timeout=None):
593
"""Bump up the timeout for this client.
594
595
This should only be called when the client has been seen,
596
alive and well.
597
"""
1081
598
if timeout is None:
1082
599
timeout = self.timeout
600
self.last_checked_ok = datetime.datetime.utcnow()
1083
601
if self.disable_initiator_tag is not None:
1084
GLib.source_remove(self.disable_initiator_tag)
1085
self.disable_initiator_tag = None
602
gobject.source_remove(self.disable_initiator_tag)
1086
603
if getattr(self, "enabled", False):
1087
self.disable_initiator_tag = GLib.timeout_add(
1088
int(timeout.total_seconds() * 1000), self.disable)
604
self.disable_initiator_tag = (gobject.timeout_add
605
(timedelta_to_milliseconds
606
(timeout), self.disable))
1089
607
self.expires = datetime.datetime.utcnow() + timeout
1090
608
1091
609
def need_approval(self):
1092
610
self.last_approval_request = datetime.datetime.utcnow()
1093
611
1094
612
def start_checker(self):
1095
613
"""Start a new checker subprocess if one is not running.
1096
614
1097
615
If a checker already exists, leave it running and do
1098
616
nothing."""
1099
617
# The reason for not killing a running checker is that if we
1100
# did that, and if a checker (for some reason) started running
1101
# slowly and taking more than 'interval' time, then the client
1102
# would inevitably timeout, since no checker would get a
1103
# chance to run to completion. If we instead leave running
618
# did that, then if a checker (for some reason) started
619
# running slowly and taking more than 'interval' time, the
620
# client would inevitably timeout, since no checker would get
621
# a chance to run to completion. If we instead leave running
1104
622
# checkers alone, the checker would have to take more time
1105
623
# than 'timeout' for the client to be disabled, which is as it
1106
624
# should be.
1107
1108
if self.checker is not None and not self.checker.is_alive():
1109
logger.warning("Checker was not alive; joining")
1110
self.checker.join()
1111
self.checker = None
625
626
# If a checker exists, make sure it is not a zombie
627
try:
628
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
629
except (AttributeError, OSError) as error:
630
if (isinstance(error, OSError)
631
and error.errno != errno.ECHILD):
632
raise error
633
else:
634
if pid:
635
logger.warning("Checker was a zombie")
636
gobject.source_remove(self.checker_callback_tag)
637
self.checker_callback(pid, status,
638
self.current_checker_command)
1112
639
# Start a new checker if needed
1113
640
if self.checker is None:
1114
# Escape attributes for the shell
1115
escaped_attrs = {
1116
attr: re.escape(str(getattr(self, attr)))
1117
for attr in self.runtime_expansions}
1118
641
try:
1119
command = self.checker_command % escaped_attrs
1120
except TypeError as error:
1121
logger.error('Could not format string "%s"',
1122
self.checker_command,
1123
exc_info=error)
1124
return True # Try again later
642
# In case checker_command has exactly one % operator
643
command = self.checker_command % self.host
644
except TypeError:
645
# Escape attributes for the shell
646
escaped_attrs = dict(
647
(attr,
648
re.escape(unicode(str(getattr(self, attr, "")),
649
errors=
650
'replace')))
651
for attr in
652
self.runtime_expansions)
653
654
try:
655
command = self.checker_command % escaped_attrs
656
except TypeError as error:
657
logger.error('Could not format string "%s":'
658
' %s', self.checker_command, error)
659
return True # Try again later
1125
660
self.current_checker_command = command
1126
logger.info("Starting checker %r for %s", command,
1127
self.name)
1128
# We don't need to redirect stdout and stderr, since
1129
# in normal mode, that is already done by daemon(),
1130
# and in debug mode we don't want to. (Stdin is
1131
# always replaced by /dev/null.)
1132
# The exception is when not debugging but nevertheless
1133
# running in the foreground; use the previously
1134
# created wnull.
1135
popen_args = {"close_fds": True,
1136
"shell": True,
1137
"cwd": "/"}
1138
if (not self.server_settings["debug"]
1139
and self.server_settings["foreground"]):
1140
popen_args.update({"stdout": wnull,
1141
"stderr": wnull})
1142
pipe = multiprocessing.Pipe(duplex=False)
1143
self.checker = multiprocessing.Process(
1144
target=call_pipe,
1145
args=(pipe[1], subprocess.call, command),
1146
kwargs=popen_args)
1147
self.checker.start()
1148
self.checker_callback_tag = GLib.io_add_watch(
1149
pipe[0].fileno(), GLib.IO_IN,
1150
self.checker_callback, pipe[0], command)
1151
# Re-run this periodically if run by GLib.timeout_add
661
try:
662
logger.info("Starting checker %r for %s",
663
command, self.name)
664
# We don't need to redirect stdout and stderr, since
665
# in normal mode, that is already done by daemon(),
666
# and in debug mode we don't want to. (Stdin is
667
# always replaced by /dev/null.)
668
self.checker = subprocess.Popen(command,
669
close_fds=True,
670
shell=True, cwd="/")
671
self.checker_callback_tag = (gobject.child_watch_add
672
(self.checker.pid,
673
self.checker_callback,
674
data=command))
675
# The checker may have completed before the gobject
676
# watch was added. Check for this.
677
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
678
if pid:
679
gobject.source_remove(self.checker_callback_tag)
680
self.checker_callback(pid, status, command)
681
except OSError as error:
682
logger.error("Failed to start subprocess: %s",
683
error)
684
# Re-run this periodically if run by gobject.timeout_add
1152
685
return True
1153
686
1154
687
def stop_checker(self):
1155
688
"""Force the checker process, if any, to stop."""
1156
689
if self.checker_callback_tag:
1157
GLib.source_remove(self.checker_callback_tag)
690
gobject.source_remove(self.checker_callback_tag)
1158
691
self.checker_callback_tag = None
1159
692
if getattr(self, "checker", None) is None:
1160
693
return
1161
694
logger.debug("Stopping checker for %(name)s", vars(self))
1162
self.checker.terminate()
695
try:
696
os.kill(self.checker.pid, signal.SIGTERM)
697
#time.sleep(0.5)
698
#if self.checker.poll() is None:
699
# os.kill(self.checker.pid, signal.SIGKILL)
700
except OSError as error:
701
if error.errno != errno.ESRCH: # No such process
702
raise
1163
703
self.checker = None
1164
704
1165
705
1166
def dbus_service_property(dbus_interface,
1167
signature="v",
1168
access="readwrite",
1169
byte_arrays=False):
706
def dbus_service_property(dbus_interface, signature="v",
707
access="readwrite", byte_arrays=False):
1170
708
"""Decorators for marking methods of a DBusObjectWithProperties to
1171
709
become properties on the D-Bus.
1172
710
1173
711
The decorated method will be called with no arguments by "Get"
1174
712
and with one argument by "Set".
1175
713
1176
714
The parameters, where they are supported, are the same as
1177
715
dbus.service.method, except there is only "signature", since the
1178
716
type from Get() and the type sent to Set() is the same.
1181
719
# "Set" method, so we fail early here:
1182
720
if byte_arrays and signature != "ay":
1183
721
raise ValueError("Byte arrays not supported for non-'ay'"
1184
" signature {!r}".format(signature))
1185
722
" signature %r" % signature)
1186
723
def decorator(func):
1187
724
func._dbus_is_property = True
1188
725
func._dbus_interface = dbus_interface
1191
728
func._dbus_name = func.__name__
1192
729
if func._dbus_name.endswith("_dbus_property"):
1193
730
func._dbus_name = func._dbus_name[:-14]
1194
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1195
return func
1196
1197
return decorator
1198
1199
1200
def dbus_interface_annotations(dbus_interface):
1201
"""Decorator for marking functions returning interface annotations
1202
1203
Usage:
1204
1205
@dbus_interface_annotations("org.example.Interface")
1206
def _foo(self): # Function name does not matter
1207
return {"org.freedesktop.DBus.Deprecated": "true",
1208
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1209
"false"}
1210
"""
1211
1212
def decorator(func):
1213
func._dbus_is_interface = True
1214
func._dbus_interface = dbus_interface
1215
func._dbus_name = dbus_interface
1216
return func
1217
1218
return decorator
1219
1220
1221
def dbus_annotations(annotations):
1222
"""Decorator to annotate D-Bus methods, signals or properties
1223
Usage:
1224
1225
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1226
"org.freedesktop.DBus.Property."
1227
"EmitsChangedSignal": "false"})
1228
@dbus_service_property("org.example.Interface", signature="b",
1229
access="r")
1230
def Property_dbus_property(self):
1231
return dbus.Boolean(False)
1232
1233
See also the DBusObjectWithAnnotations class.
1234
"""
1235
1236
def decorator(func):
1237
func._dbus_annotations = annotations
1238
return func
1239
731
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
732
return func
1240
733
return decorator
1241
734
1242
735
1243
736
class DBusPropertyException(dbus.exceptions.DBusException):
1244
737
"""A base class for D-Bus property-related exceptions
1245
738
"""
1246
pass
739
def __unicode__(self):
740
return unicode(str(self))
1247
741
1248
742
1249
743
class DBusPropertyAccessException(DBusPropertyException):
1258
752
pass
1259
753
1260
754
1261
class DBusObjectWithAnnotations(dbus.service.Object):
1262
"""A D-Bus object with annotations.
1263
1264
Classes inheriting from this can use the dbus_annotations
1265
decorator to add annotations to methods or signals.
1266
"""
1267
1268
@staticmethod
1269
def _is_dbus_thing(thing):
1270
"""Returns a function testing if an attribute is a D-Bus thing
1271
1272
If called like _is_dbus_thing("method") it returns a function
1273
suitable for use as predicate to inspect.getmembers().
1274
"""
1275
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1276
False)
1277
1278
def _get_all_dbus_things(self, thing):
1279
"""Returns a generator of (name, attribute) pairs
1280
"""
1281
return ((getattr(athing.__get__(self), "_dbus_name", name),
1282
athing.__get__(self))
1283
for cls in self.__class__.__mro__
1284
for name, athing in
1285
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1286
1287
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1288
out_signature="s",
1289
path_keyword='object_path',
1290
connection_keyword='connection')
1291
def Introspect(self, object_path, connection):
1292
"""Overloading of standard D-Bus method.
1293
1294
Inserts annotation tags on methods and signals.
1295
"""
1296
xmlstring = dbus.service.Object.Introspect(self, object_path,
1297
connection)
1298
try:
1299
document = xml.dom.minidom.parseString(xmlstring)
1300
1301
for if_tag in document.getElementsByTagName("interface"):
1302
# Add annotation tags
1303
for typ in ("method", "signal"):
1304
for tag in if_tag.getElementsByTagName(typ):
1305
annots = dict()
1306
for name, prop in (self.
1307
_get_all_dbus_things(typ)):
1308
if (name == tag.getAttribute("name")
1309
and prop._dbus_interface
1310
== if_tag.getAttribute("name")):
1311
annots.update(getattr(
1312
prop, "_dbus_annotations", {}))
1313
for name, value in annots.items():
1314
ann_tag = document.createElement(
1315
"annotation")
1316
ann_tag.setAttribute("name", name)
1317
ann_tag.setAttribute("value", value)
1318
tag.appendChild(ann_tag)
1319
# Add interface annotation tags
1320
for annotation, value in dict(
1321
itertools.chain.from_iterable(
1322
annotations().items()
1323
for name, annotations
1324
in self._get_all_dbus_things("interface")
1325
if name == if_tag.getAttribute("name")
1326
)).items():
1327
ann_tag = document.createElement("annotation")
1328
ann_tag.setAttribute("name", annotation)
1329
ann_tag.setAttribute("value", value)
1330
if_tag.appendChild(ann_tag)
1331
# Fix argument name for the Introspect method itself
1332
if (if_tag.getAttribute("name")
1333
== dbus.INTROSPECTABLE_IFACE):
1334
for cn in if_tag.getElementsByTagName("method"):
1335
if cn.getAttribute("name") == "Introspect":
1336
for arg in cn.getElementsByTagName("arg"):
1337
if (arg.getAttribute("direction")
1338
== "out"):
1339
arg.setAttribute("name",
1340
"xml_data")
1341
xmlstring = document.toxml("utf-8")
1342
document.unlink()
1343
except (AttributeError, xml.dom.DOMException,
1344
xml.parsers.expat.ExpatError) as error:
1345
logger.error("Failed to override Introspection method",
1346
exc_info=error)
1347
return xmlstring
1348
1349
1350
class DBusObjectWithProperties(DBusObjectWithAnnotations):
755
class DBusObjectWithProperties(dbus.service.Object):
1351
756
"""A D-Bus object with properties.
1352
757
1353
758
Classes inheriting from this can use the dbus_service_property
1354
759
decorator to expose methods as D-Bus properties. It exposes the
1355
760
standard Get(), Set(), and GetAll() methods on the D-Bus.
1356
761
"""
1357
762
763
@staticmethod
764
def _is_dbus_property(obj):
765
return getattr(obj, "_dbus_is_property", False)
766
767
def _get_all_dbus_properties(self):
768
"""Returns a generator of (name, attribute) pairs
769
"""
770
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
771
for cls in self.__class__.__mro__
772
for name, prop in
773
inspect.getmembers(cls, self._is_dbus_property))
774
1358
775
def _get_dbus_property(self, interface_name, property_name):
1359
776
"""Returns a bound method if one exists which is a D-Bus
1360
777
property with the specified name and interface.
1361
778
"""
1362
for cls in self.__class__.__mro__:
1363
for name, value in inspect.getmembers(
1364
cls, self._is_dbus_thing("property")):
779
for cls in self.__class__.__mro__:
780
for name, value in (inspect.getmembers
781
(cls, self._is_dbus_property)):
1365
782
if (value._dbus_name == property_name
1366
783
and value._dbus_interface == interface_name):
1367
784
return value.__get__(self)
1368
785
1369
786
# No such property
1370
raise DBusPropertyNotFound("{}:{}.{}".format(
1371
self.dbus_object_path, interface_name, property_name))
1372
1373
@classmethod
1374
def _get_all_interface_names(cls):
1375
"""Get a sequence of all interfaces supported by an object"""
1376
return (name for name in set(getattr(getattr(x, attr),
1377
"_dbus_interface", None)
1378
for x in (inspect.getmro(cls))
1379
for attr in dir(x))
1380
if name is not None)
1381
1382
@dbus.service.method(dbus.PROPERTIES_IFACE,
1383
in_signature="ss",
787
raise DBusPropertyNotFound(self.dbus_object_path + ":"
788
+ interface_name + "."
789
+ property_name)
790
791
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1384
792
out_signature="v")
1385
793
def Get(self, interface_name, property_name):
1386
794
"""Standard D-Bus property Get() method, see D-Bus standard.
1392
800
if not hasattr(value, "variant_level"):
1393
801
return value
1394
802
return type(value)(value, variant_level=value.variant_level+1)
1395
803
1396
804
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1397
805
def Set(self, interface_name, property_name, value):
1398
806
"""Standard D-Bus property Set() method, see D-Bus standard.
1404
812
# The byte_arrays option is not supported yet on
1405
813
# signatures other than "ay".
1406
814
if prop._dbus_signature != "ay":
1407
raise ValueError("Byte arrays not supported for non-"
1408
"'ay' signature {!r}"
1409
.format(prop._dbus_signature))
1410
value = dbus.ByteArray(b''.join(chr(byte)
1411
for byte in value))
815
raise ValueError
816
value = dbus.ByteArray(''.join(unichr(byte)
817
for byte in value))
1412
818
prop(value)
1413
1414
@dbus.service.method(dbus.PROPERTIES_IFACE,
1415
in_signature="s",
819
820
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1416
821
out_signature="a{sv}")
1417
822
def GetAll(self, interface_name):
1418
823
"""Standard D-Bus property GetAll() method, see D-Bus
1419
824
standard.
1420
825
1421
826
Note: Will not include properties with access="write".
1422
827
"""
1423
828
properties = {}
1424
for name, prop in self._get_all_dbus_things("property"):
829
for name, prop in self._get_all_dbus_properties():
1425
830
if (interface_name
1426
831
and interface_name != prop._dbus_interface):
1427
832
# Interface non-empty but did not match
1433
838
if not hasattr(value, "variant_level"):
1434
839
properties[name] = value
1435
840
continue
1436
properties[name] = type(value)(
1437
value, variant_level=value.variant_level + 1)
841
properties[name] = type(value)(value, variant_level=
842
value.variant_level+1)
1438
843
return dbus.Dictionary(properties, signature="sv")
1439
1440
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1441
def PropertiesChanged(self, interface_name, changed_properties,
1442
invalidated_properties):
1443
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1444
standard.
1445
"""
1446
pass
1447
844
1448
845
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1449
846
out_signature="s",
1450
847
path_keyword='object_path',
1451
848
connection_keyword='connection')
1452
849
def Introspect(self, object_path, connection):
1453
"""Overloading of standard D-Bus method.
1454
1455
Inserts property tags and interface annotation tags.
850
"""Standard D-Bus method, overloaded to insert property tags.
1456
851
"""
1457
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1458
object_path,
1459
connection)
852
xmlstring = dbus.service.Object.Introspect(self, object_path,
853
connection)
1460
854
try:
1461
855
document = xml.dom.minidom.parseString(xmlstring)
1462
1463
856
def make_tag(document, name, prop):
1464
857
e = document.createElement("property")
1465
858
e.setAttribute("name", name)
1466
859
e.setAttribute("type", prop._dbus_signature)
1467
860
e.setAttribute("access", prop._dbus_access)
1468
861
return e
1469
1470
862
for if_tag in document.getElementsByTagName("interface"):
1471
# Add property tags
1472
863
for tag in (make_tag(document, name, prop)
1473
864
for name, prop
1474
in self._get_all_dbus_things("property")
865
in self._get_all_dbus_properties()
1475
866
if prop._dbus_interface
1476
867
== if_tag.getAttribute("name")):
1477
868
if_tag.appendChild(tag)
1478
# Add annotation tags for properties
1479
for tag in if_tag.getElementsByTagName("property"):
1480
annots = dict()
1481
for name, prop in self._get_all_dbus_things(
1482
"property"):
1483
if (name == tag.getAttribute("name")
1484
and prop._dbus_interface
1485
== if_tag.getAttribute("name")):
1486
annots.update(getattr(
1487
prop, "_dbus_annotations", {}))
1488
for name, value in annots.items():
1489
ann_tag = document.createElement(
1490
"annotation")
1491
ann_tag.setAttribute("name", name)
1492
ann_tag.setAttribute("value", value)
1493
tag.appendChild(ann_tag)
1494
869
# Add the names to the return values for the
1495
870
# "org.freedesktop.DBus.Properties" methods
1496
871
if (if_tag.getAttribute("name")
1511
886
except (AttributeError, xml.dom.DOMException,
1512
887
xml.parsers.expat.ExpatError) as error:
1513
888
logger.error("Failed to override Introspection method",
1514
exc_info=error)
1515
return xmlstring
1516
1517
1518
try:
1519
dbus.OBJECT_MANAGER_IFACE
1520
except AttributeError:
1521
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1522
1523
1524
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1525
"""A D-Bus object with an ObjectManager.
1526
1527
Classes inheriting from this exposes the standard
1528
GetManagedObjects call and the InterfacesAdded and
1529
InterfacesRemoved signals on the standard
1530
"org.freedesktop.DBus.ObjectManager" interface.
1531
1532
Note: No signals are sent automatically; they must be sent
1533
manually.
1534
"""
1535
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1536
out_signature="a{oa{sa{sv}}}")
1537
def GetManagedObjects(self):
1538
"""This function must be overridden"""
1539
raise NotImplementedError()
1540
1541
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1542
signature="oa{sa{sv}}")
1543
def InterfacesAdded(self, object_path, interfaces_and_properties):
1544
pass
1545
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1547
def InterfacesRemoved(self, object_path, interfaces):
1548
pass
1549
1550
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1551
out_signature="s",
1552
path_keyword='object_path',
1553
connection_keyword='connection')
1554
def Introspect(self, object_path, connection):
1555
"""Overloading of standard D-Bus method.
1556
1557
Override return argument name of GetManagedObjects to be
1558
"objpath_interfaces_and_properties"
1559
"""
1560
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1561
object_path,
1562
connection)
1563
try:
1564
document = xml.dom.minidom.parseString(xmlstring)
1565
1566
for if_tag in document.getElementsByTagName("interface"):
1567
# Fix argument name for the GetManagedObjects method
1568
if (if_tag.getAttribute("name")
1569
== dbus.OBJECT_MANAGER_IFACE):
1570
for cn in if_tag.getElementsByTagName("method"):
1571
if (cn.getAttribute("name")
1572
== "GetManagedObjects"):
1573
for arg in cn.getElementsByTagName("arg"):
1574
if (arg.getAttribute("direction")
1575
== "out"):
1576
arg.setAttribute(
1577
"name",
1578
"objpath_interfaces"
1579
"_and_properties")
1580
xmlstring = document.toxml("utf-8")
1581
document.unlink()
1582
except (AttributeError, xml.dom.DOMException,
1583
xml.parsers.expat.ExpatError) as error:
1584
logger.error("Failed to override Introspection method",
1585
exc_info=error)
1586
return xmlstring
1587
1588
1589
def datetime_to_dbus(dt, variant_level=0):
889
error)
890
return xmlstring
891
892
893
def datetime_to_dbus (dt, variant_level=0):
1590
894
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1591
895
if dt is None:
1592
return dbus.String("", variant_level=variant_level)
1593
return dbus.String(dt.isoformat(), variant_level=variant_level)
1594
1595
1596
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1597
"""A class decorator; applied to a subclass of
1598
dbus.service.Object, it will add alternate D-Bus attributes with
1599
interface names according to the "alt_interface_names" mapping.
1600
Usage:
1601
1602
@alternate_dbus_interfaces({"org.example.Interface":
1603
"net.example.AlternateInterface"})
1604
class SampleDBusObject(dbus.service.Object):
1605
@dbus.service.method("org.example.Interface")
1606
def SampleDBusMethod():
1607
pass
1608
1609
The above "SampleDBusMethod" on "SampleDBusObject" will be
1610
reachable via two interfaces: "org.example.Interface" and
1611
"net.example.AlternateInterface", the latter of which will have
1612
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1613
"true", unless "deprecate" is passed with a False value.
1614
1615
This works for methods and signals, and also for D-Bus properties
1616
(from DBusObjectWithProperties) and interfaces (from the
1617
dbus_interface_annotations decorator).
896
return dbus.String("", variant_level = variant_level)
897
return dbus.String(dt.isoformat(),
898
variant_level=variant_level)
899
900
901
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
902
.__metaclass__):
903
"""Applied to an empty subclass of a D-Bus object, this metaclass
904
will add additional D-Bus attributes matching a certain pattern.
1618
905
"""
1619
1620
def wrapper(cls):
1621
for orig_interface_name, alt_interface_name in (
1622
alt_interface_names.items()):
1623
attr = {}
1624
interface_names = set()
1625
# Go though all attributes of the class
1626
for attrname, attribute in inspect.getmembers(cls):
906
def __new__(mcs, name, bases, attr):
907
# Go through all the base classes which could have D-Bus
908
# methods, signals, or properties in them
909
for base in (b for b in bases
910
if issubclass(b, dbus.service.Object)):
911
# Go though all attributes of the base class
912
for attrname, attribute in inspect.getmembers(base):
1627
913
# Ignore non-D-Bus attributes, and D-Bus attributes
1628
914
# with the wrong interface name
1629
915
if (not hasattr(attribute, "_dbus_interface")
1630
or not attribute._dbus_interface.startswith(
1631
orig_interface_name)):
916
or not attribute._dbus_interface
917
.startswith("se.recompile.Mandos")):
1632
918
continue
1633
919
# Create an alternate D-Bus interface name based on
1634
920
# the current name
1635
alt_interface = attribute._dbus_interface.replace(
1636
orig_interface_name, alt_interface_name)
1637
interface_names.add(alt_interface)
921
alt_interface = (attribute._dbus_interface
922
.replace("se.recompile.Mandos",
923
"se.bsnet.fukt.Mandos"))
1638
924
# Is this a D-Bus signal?
1639
925
if getattr(attribute, "_dbus_is_signal", False):
1640
# Extract the original non-method undecorated
1641
# function by black magic
1642
if sys.version_info.major == 2:
1643
nonmethod_func = (dict(
926
# Extract the original non-method function by
927
# black magic
928
nonmethod_func = (dict(
1644
929
zip(attribute.func_code.co_freevars,
1645
attribute.__closure__))
1646
["func"].cell_contents)
1647
else:
1648
nonmethod_func = (dict(
1649
zip(attribute.__code__.co_freevars,
1650
attribute.__closure__))
1651
["func"].cell_contents)
930
attribute.__closure__))["func"]
931
.cell_contents)
1652
932
# Create a new, but exactly alike, function
1653
933
# object, and decorate it to be a new D-Bus signal
1654
934
# with the alternate D-Bus interface name
1655
new_function = copy_function(nonmethod_func)
1656
new_function = (dbus.service.signal(
1657
alt_interface,
1658
attribute._dbus_signature)(new_function))
1659
# Copy annotations, if any
1660
try:
1661
new_function._dbus_annotations = dict(
1662
attribute._dbus_annotations)
1663
except AttributeError:
1664
pass
1665
935
new_function = (dbus.service.signal
936
(alt_interface,
937
attribute._dbus_signature)
938
(types.FunctionType(
939
nonmethod_func.func_code,
940
nonmethod_func.func_globals,
941
nonmethod_func.func_name,
942
nonmethod_func.func_defaults,
943
nonmethod_func.func_closure)))
1666
944
# Define a creator of a function to call both the
1667
# original and alternate functions, so both the
1668
# original and alternate signals gets sent when
1669
# the function is called
945
# old and new functions, so both the old and new
946
# signals gets sent when the function is called
1670
947
def fixscope(func1, func2):
1671
948
"""This function is a scope container to pass
1672
949
func1 and func2 to the "call_both" function
1673
950
outside of its arguments"""
1674
1675
@functools.wraps(func2)
1676
951
def call_both(*args, **kwargs):
1677
952
"""This function will emit two D-Bus
1678
953
signals by calling func1 and func2"""
1679
954
func1(*args, **kwargs)
1680
955
func2(*args, **kwargs)
1681
# Make wrapper function look like a D-Bus
1682
# signal
1683
for name, attr in inspect.getmembers(func2):
1684
if name.startswith("_dbus_"):
1685
setattr(call_both, name, attr)
1686
1687
956
return call_both
1688
957
# Create the "call_both" function and add it to
1689
958
# the class
1690
attr[attrname] = fixscope(attribute, new_function)
959
attr[attrname] = fixscope(attribute,
960
new_function)
1691
961
# Is this a D-Bus method?
1692
962
elif getattr(attribute, "_dbus_is_method", False):
1693
963
# Create a new, but exactly alike, function
1694
964
# object. Decorate it to be a new D-Bus method
1695
965
# with the alternate D-Bus interface name. Add it
1696
966
# to the class.
1697
attr[attrname] = (
1698
dbus.service.method(
1699
alt_interface,
1700
attribute._dbus_in_signature,
1701
attribute._dbus_out_signature)
1702
(copy_function(attribute)))
1703
# Copy annotations, if any
1704
try:
1705
attr[attrname]._dbus_annotations = dict(
1706
attribute._dbus_annotations)
1707
except AttributeError:
1708
pass
967
attr[attrname] = (dbus.service.method
968
(alt_interface,
969
attribute._dbus_in_signature,
970
attribute._dbus_out_signature)
971
(types.FunctionType
972
(attribute.func_code,
973
attribute.func_globals,
974
attribute.func_name,
975
attribute.func_defaults,
976
attribute.func_closure)))
1709
977
# Is this a D-Bus property?
1710
978
elif getattr(attribute, "_dbus_is_property", False):
1711
979
# Create a new, but exactly alike, function
1712
980
# object, and decorate it to be a new D-Bus
1713
981
# property with the alternate D-Bus interface
1714
982
# name. Add it to the class.
1715
attr[attrname] = (dbus_service_property(
1716
alt_interface, attribute._dbus_signature,
1717
attribute._dbus_access,
1718
attribute._dbus_get_args_options
1719
["byte_arrays"])
1720
(copy_function(attribute)))
1721
# Copy annotations, if any
1722
try:
1723
attr[attrname]._dbus_annotations = dict(
1724
attribute._dbus_annotations)
1725
except AttributeError:
1726
pass
1727
# Is this a D-Bus interface?
1728
elif getattr(attribute, "_dbus_is_interface", False):
1729
# Create a new, but exactly alike, function
1730
# object. Decorate it to be a new D-Bus interface
1731
# with the alternate D-Bus interface name. Add it
1732
# to the class.
1733
attr[attrname] = (
1734
dbus_interface_annotations(alt_interface)
1735
(copy_function(attribute)))
1736
if deprecate:
1737
# Deprecate all alternate interfaces
1738
iname = "_AlternateDBusNames_interface_annotation{}"
1739
for interface_name in interface_names:
1740
1741
@dbus_interface_annotations(interface_name)
1742
def func(self):
1743
return {"org.freedesktop.DBus.Deprecated":
1744
"true"}
1745
# Find an unused name
1746
for aname in (iname.format(i)
1747
for i in itertools.count()):
1748
if aname not in attr:
1749
attr[aname] = func
1750
break
1751
if interface_names:
1752
# Replace the class with a new subclass of it with
1753
# methods, signals, etc. as created above.
1754
if sys.version_info.major == 2:
1755
cls = type(b"{}Alternate".format(cls.__name__),
1756
(cls, ), attr)
1757
else:
1758
cls = type("{}Alternate".format(cls.__name__),
1759
(cls, ), attr)
1760
return cls
1761
1762
return wrapper
1763
1764
1765
@alternate_dbus_interfaces({"se.recompile.Mandos":
1766
"se.bsnet.fukt.Mandos"})
983
attr[attrname] = (dbus_service_property
984
(alt_interface,
985
attribute._dbus_signature,
986
attribute._dbus_access,
987
attribute
988
._dbus_get_args_options
989
["byte_arrays"])
990
(types.FunctionType
991
(attribute.func_code,
992
attribute.func_globals,
993
attribute.func_name,
994
attribute.func_defaults,
995
attribute.func_closure)))
996
return type.__new__(mcs, name, bases, attr)
997
998
1767
999
class ClientDBus(Client, DBusObjectWithProperties):
1768
1000
"""A Client class using D-Bus
1769
1001
1770
1002
Attributes:
1771
1003
dbus_object_path: dbus.ObjectPath
1772
1004
bus: dbus.SystemBus()
1773
1005
"""
1774
1006
1775
1007
runtime_expansions = (Client.runtime_expansions
1776
+ ("dbus_object_path", ))
1777
1778
_interface = "se.recompile.Mandos.Client"
1779
1008
+ ("dbus_object_path",))
1009
1780
1010
# dbus.service.Object doesn't use super(), so we can't either.
1781
1782
def __init__(self, bus=None, *args, **kwargs):
1011
1012
def __init__(self, bus = None, *args, **kwargs):
1783
1013
self.bus = bus
1784
1014
Client.__init__(self, *args, **kwargs)
1015
1016
self._approvals_pending = 0
1785
1017
# Only now, when this client is initialized, can it show up on
1786
1018
# the D-Bus
1787
client_object_name = str(self.name).translate(
1019
client_object_name = unicode(self.name).translate(
1788
1020
{ord("."): ord("_"),
1789
1021
ord("-"): ord("_")})
1790
self.dbus_object_path = dbus.ObjectPath(
1791
"/clients/" + client_object_name)
1022
self.dbus_object_path = (dbus.ObjectPath
1023
("/clients/" + client_object_name))
1792
1024
DBusObjectWithProperties.__init__(self, self.bus,
1793
1025
self.dbus_object_path)
1794
1795
def notifychangeproperty(transform_func, dbus_name,
1796
type_func=lambda x: x,
1797
variant_level=1,
1798
invalidate_only=False,
1799
_interface=_interface):
1026
1027
def notifychangeproperty(transform_func,
1028
dbus_name, type_func=lambda x: x,
1029
variant_level=1):
1800
1030
""" Modify a variable so that it's a property which announces
1801
1031
its changes to DBus.
1802
1032
1803
1033
transform_fun: Function that takes a value and a variant_level
1804
1034
and transforms it to a D-Bus type.
1805
1035
dbus_name: D-Bus name of the variable
1807
1037
to the D-Bus. Default: no transform
1808
1038
variant_level: D-Bus variant level. Default: 1
1809
1039
"""
1810
attrname = "_{}".format(dbus_name)
1811
1040
attrname = "_{0}".format(dbus_name)
1812
1041
def setter(self, value):
1813
1042
if hasattr(self, "dbus_object_path"):
1814
1043
if (not hasattr(self, attrname) or
1815
1044
type_func(getattr(self, attrname, None))
1816
1045
!= type_func(value)):
1817
if invalidate_only:
1818
self.PropertiesChanged(
1819
_interface, dbus.Dictionary(),
1820
dbus.Array((dbus_name, )))
1821
else:
1822
dbus_value = transform_func(
1823
type_func(value),
1824
variant_level=variant_level)
1825
self.PropertyChanged(dbus.String(dbus_name),
1826
dbus_value)
1827
self.PropertiesChanged(
1828
_interface,
1829
dbus.Dictionary({dbus.String(dbus_name):
1830
dbus_value}),
1831
dbus.Array())
1046
dbus_value = transform_func(type_func(value),
1047
variant_level
1048
=variant_level)
1049
self.PropertyChanged(dbus.String(dbus_name),
1050
dbus_value)
1832
1051
setattr(self, attrname, value)
1833
1052
1834
1053
return property(lambda self: getattr(self, attrname), setter)
1835
1054
1055
1836
1056
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1837
1057
approvals_pending = notifychangeproperty(dbus.Boolean,
1838
1058
"ApprovalPending",
1839
type_func=bool)
1059
type_func = bool)
1840
1060
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1841
1061
last_enabled = notifychangeproperty(datetime_to_dbus,
1842
1062
"LastEnabled")
1843
checker = notifychangeproperty(
1844
dbus.Boolean, "CheckerRunning",
1845
type_func=lambda checker: checker is not None)
1063
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1064
type_func = lambda checker:
1065
checker is not None)
1846
1066
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1847
1067
"LastCheckedOK")
1848
last_checker_status = notifychangeproperty(dbus.Int16,
1849
"LastCheckerStatus")
1850
1068
last_approval_request = notifychangeproperty(
1851
1069
datetime_to_dbus, "LastApprovalRequest")
1852
1070
approved_by_default = notifychangeproperty(dbus.Boolean,
1853
1071
"ApprovedByDefault")
1854
approval_delay = notifychangeproperty(
1855
dbus.UInt64, "ApprovalDelay",
1856
type_func=lambda td: td.total_seconds() * 1000)
1072
approval_delay = notifychangeproperty(dbus.UInt16,
1073
"ApprovalDelay",
1074
type_func =
1075
timedelta_to_milliseconds)
1857
1076
approval_duration = notifychangeproperty(
1858
dbus.UInt64, "ApprovalDuration",
1859
type_func=lambda td: td.total_seconds() * 1000)
1077
dbus.UInt16, "ApprovalDuration",
1078
type_func = timedelta_to_milliseconds)
1860
1079
host = notifychangeproperty(dbus.String, "Host")
1861
timeout = notifychangeproperty(
1862
dbus.UInt64, "Timeout",
1863
type_func=lambda td: td.total_seconds() * 1000)
1080
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1081
type_func =
1082
timedelta_to_milliseconds)
1864
1083
extended_timeout = notifychangeproperty(
1865
dbus.UInt64, "ExtendedTimeout",
1866
type_func=lambda td: td.total_seconds() * 1000)
1867
interval = notifychangeproperty(
1868
dbus.UInt64, "Interval",
1869
type_func=lambda td: td.total_seconds() * 1000)
1084
dbus.UInt16, "ExtendedTimeout",
1085
type_func = timedelta_to_milliseconds)
1086
interval = notifychangeproperty(dbus.UInt16,
1087
"Interval",
1088
type_func =
1089
timedelta_to_milliseconds)
1870
1090
checker_command = notifychangeproperty(dbus.String, "Checker")
1871
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1872
invalidate_only=True)
1873
1091
1874
1092
del notifychangeproperty
1875
1093
1876
1094
def __del__(self, *args, **kwargs):
1877
1095
try:
1878
1096
self.remove_from_connection()
1881
1099
if hasattr(DBusObjectWithProperties, "__del__"):
1882
1100
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1883
1101
Client.__del__(self, *args, **kwargs)
1884
1885
def checker_callback(self, source, condition,
1886
connection, command, *args, **kwargs):
1887
ret = Client.checker_callback(self, source, condition,
1888
connection, command, *args,
1889
**kwargs)
1890
exitstatus = self.last_checker_status
1891
if exitstatus >= 0:
1102
1103
def checker_callback(self, pid, condition, command,
1104
*args, **kwargs):
1105
self.checker_callback_tag = None
1106
self.checker = None
1107
if os.WIFEXITED(condition):
1108
exitstatus = os.WEXITSTATUS(condition)
1892
1109
# Emit D-Bus signal
1893
1110
self.CheckerCompleted(dbus.Int16(exitstatus),
1894
# This is specific to GNU libC
1895
dbus.Int64(exitstatus << 8),
1111
dbus.Int64(condition),
1896
1112
dbus.String(command))
1897
1113
else:
1898
1114
# Emit D-Bus signal
1899
1115
self.CheckerCompleted(dbus.Int16(-1),
1900
dbus.Int64(
1901
# This is specific to GNU libC
1902
(exitstatus << 8)
1903
| self.last_checker_signal),
1116
dbus.Int64(condition),
1904
1117
dbus.String(command))
1905
return ret
1906
1118
1119
return Client.checker_callback(self, pid, condition, command,
1120
*args, **kwargs)
1121
1907
1122
def start_checker(self, *args, **kwargs):
1908
old_checker_pid = getattr(self.checker, "pid", None)
1123
old_checker = self.checker
1124
if self.checker is not None:
1125
old_checker_pid = self.checker.pid
1126
else:
1127
old_checker_pid = None
1909
1128
r = Client.start_checker(self, *args, **kwargs)
1910
1129
# Only if new checker process was started
1911
1130
if (self.checker is not None
1913
1132
# Emit D-Bus signal
1914
1133
self.CheckerStarted(self.current_checker_command)
1915
1134
return r
1916
1135
1917
1136
def _reset_approved(self):
1918
1137
self.approved = None
1919
1138
return False
1920
1139
1921
1140
def approve(self, value=True):
1141
self.send_changedstate()
1922
1142
self.approved = value
1923
GLib.timeout_add(int(self.approval_duration.total_seconds()
1924
* 1000), self._reset_approved)
1925
self.send_changedstate()
1926
1927
# D-Bus methods, signals & properties
1928
1929
# Interfaces
1930
1931
# Signals
1932
1143
gobject.timeout_add(timedelta_to_milliseconds
1144
(self.approval_duration),
1145
self._reset_approved)
1146
1147
1148
## D-Bus methods, signals & properties
1149
_interface = "se.recompile.Mandos.Client"
1150
1151
## Signals
1152
1933
1153
# CheckerCompleted - signal
1934
1154
@dbus.service.signal(_interface, signature="nxs")
1935
1155
def CheckerCompleted(self, exitcode, waitstatus, command):
1936
1156
"D-Bus signal"
1937
1157
pass
1938
1158
1939
1159
# CheckerStarted - signal
1940
1160
@dbus.service.signal(_interface, signature="s")
1941
1161
def CheckerStarted(self, command):
1942
1162
"D-Bus signal"
1943
1163
pass
1944
1164
1945
1165
# PropertyChanged - signal
1946
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1947
1166
@dbus.service.signal(_interface, signature="sv")
1948
1167
def PropertyChanged(self, property, value):
1949
1168
"D-Bus signal"
1950
1169
pass
1951
1170
1952
1171
# GotSecret - signal
1953
1172
@dbus.service.signal(_interface)
1954
1173
def GotSecret(self):
1957
1176
server to mandos-client
1958
1177
"""
1959
1178
pass
1960
1179
1961
1180
# Rejected - signal
1962
1181
@dbus.service.signal(_interface, signature="s")
1963
1182
def Rejected(self, reason):
1964
1183
"D-Bus signal"
1965
1184
pass
1966
1185
1967
1186
# NeedApproval - signal
1968
1187
@dbus.service.signal(_interface, signature="tb")
1969
1188
def NeedApproval(self, timeout, default):
1970
1189
"D-Bus signal"
1971
1190
return self.need_approval()
1972
1973
# Methods
1974
1191
1192
# NeRwequest - signal
1193
@dbus.service.signal(_interface, signature="s")
1194
def NewRequest(self, ip):
1195
"""D-Bus signal
1196
Is sent after a client request a password.
1197
"""
1198
pass
1199
1200
## Methods
1201
1975
1202
# Approve - method
1976
1203
@dbus.service.method(_interface, in_signature="b")
1977
1204
def Approve(self, value):
1978
1205
self.approve(value)
1979
1206
1980
1207
# CheckedOK - method
1981
1208
@dbus.service.method(_interface)
1982
1209
def CheckedOK(self):
1983
1210
self.checked_ok()
1984
1211
1985
1212
# Enable - method
1986
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1987
1213
@dbus.service.method(_interface)
1988
1214
def Enable(self):
1989
1215
"D-Bus method"
1990
1216
self.enable()
1991
1217
1992
1218
# StartChecker - method
1993
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1994
1219
@dbus.service.method(_interface)
1995
1220
def StartChecker(self):
1996
1221
"D-Bus method"
1997
1222
self.start_checker()
1998
1223
1999
1224
# Disable - method
2000
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2001
1225
@dbus.service.method(_interface)
2002
1226
def Disable(self):
2003
1227
"D-Bus method"
2004
1228
self.disable()
2005
1229
2006
1230
# StopChecker - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2008
1231
@dbus.service.method(_interface)
2009
1232
def StopChecker(self):
2010
1233
self.stop_checker()
2011
2012
# Properties
2013
1234
1235
## Properties
1236
2014
1237
# ApprovalPending - property
2015
1238
@dbus_service_property(_interface, signature="b", access="read")
2016
1239
def ApprovalPending_dbus_property(self):
2017
1240
return dbus.Boolean(bool(self.approvals_pending))
2018
1241
2019
1242
# ApprovedByDefault - property
2020
@dbus_service_property(_interface,
2021
signature="b",
1243
@dbus_service_property(_interface, signature="b",
2022
1244
access="readwrite")
2023
1245
def ApprovedByDefault_dbus_property(self, value=None):
2024
1246
if value is None: # get
2025
1247
return dbus.Boolean(self.approved_by_default)
2026
1248
self.approved_by_default = bool(value)
2027
1249
2028
1250
# ApprovalDelay - property
2029
@dbus_service_property(_interface,
2030
signature="t",
1251
@dbus_service_property(_interface, signature="t",
2031
1252
access="readwrite")
2032
1253
def ApprovalDelay_dbus_property(self, value=None):
2033
1254
if value is None: # get
2034
return dbus.UInt64(self.approval_delay.total_seconds()
2035
* 1000)
1255
return dbus.UInt64(self.approval_delay_milliseconds())
2036
1256
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2037
1257
2038
1258
# ApprovalDuration - property
2039
@dbus_service_property(_interface,
2040
signature="t",
1259
@dbus_service_property(_interface, signature="t",
2041
1260
access="readwrite")
2042
1261
def ApprovalDuration_dbus_property(self, value=None):
2043
1262
if value is None: # get
2044
return dbus.UInt64(self.approval_duration.total_seconds()
2045
* 1000)
1263
return dbus.UInt64(timedelta_to_milliseconds(
1264
self.approval_duration))
2046
1265
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2047
1266
2048
1267
# Name - property
2049
@dbus_annotations(
2050
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2051
1268
@dbus_service_property(_interface, signature="s", access="read")
2052
1269
def Name_dbus_property(self):
2053
1270
return dbus.String(self.name)
2054
2055
# KeyID - property
2056
@dbus_annotations(
2057
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2058
@dbus_service_property(_interface, signature="s", access="read")
2059
def KeyID_dbus_property(self):
2060
return dbus.String(self.key_id)
2061
1271
2062
1272
# Fingerprint - property
2063
@dbus_annotations(
2064
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2065
1273
@dbus_service_property(_interface, signature="s", access="read")
2066
1274
def Fingerprint_dbus_property(self):
2067
1275
return dbus.String(self.fingerprint)
2068
1276
2069
1277
# Host - property
2070
@dbus_service_property(_interface,
2071
signature="s",
1278
@dbus_service_property(_interface, signature="s",
2072
1279
access="readwrite")
2073
1280
def Host_dbus_property(self, value=None):
2074
1281
if value is None: # get
2075
1282
return dbus.String(self.host)
2076
self.host = str(value)
2077
1283
self.host = unicode(value)
1284
2078
1285
# Created - property
2079
@dbus_annotations(
2080
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2081
1286
@dbus_service_property(_interface, signature="s", access="read")
2082
1287
def Created_dbus_property(self):
2083
1288
return datetime_to_dbus(self.created)
2084
1289
2085
1290
# LastEnabled - property
2086
1291
@dbus_service_property(_interface, signature="s", access="read")
2087
1292
def LastEnabled_dbus_property(self):
2088
1293
return datetime_to_dbus(self.last_enabled)
2089
1294
2090
1295
# Enabled - property
2091
@dbus_service_property(_interface,
2092
signature="b",
1296
@dbus_service_property(_interface, signature="b",
2093
1297
access="readwrite")
2094
1298
def Enabled_dbus_property(self, value=None):
2095
1299
if value is None: # get
2098
1302
self.enable()
2099
1303
else:
2100
1304
self.disable()
2101
1305
2102
1306
# LastCheckedOK - property
2103
@dbus_service_property(_interface,
2104
signature="s",
1307
@dbus_service_property(_interface, signature="s",
2105
1308
access="readwrite")
2106
1309
def LastCheckedOK_dbus_property(self, value=None):
2107
1310
if value is not None:
2108
1311
self.checked_ok()
2109
1312
return
2110
1313
return datetime_to_dbus(self.last_checked_ok)
2111
2112
# LastCheckerStatus - property
2113
@dbus_service_property(_interface, signature="n", access="read")
2114
def LastCheckerStatus_dbus_property(self):
2115
return dbus.Int16(self.last_checker_status)
2116
1314
2117
1315
# Expires - property
2118
1316
@dbus_service_property(_interface, signature="s", access="read")
2119
1317
def Expires_dbus_property(self):
2120
1318
return datetime_to_dbus(self.expires)
2121
1319
2122
1320
# LastApprovalRequest - property
2123
1321
@dbus_service_property(_interface, signature="s", access="read")
2124
1322
def LastApprovalRequest_dbus_property(self):
2125
1323
return datetime_to_dbus(self.last_approval_request)
2126
1324
2127
1325
# Timeout - property
2128
@dbus_service_property(_interface,
2129
signature="t",
1326
@dbus_service_property(_interface, signature="t",
2130
1327
access="readwrite")
2131
1328
def Timeout_dbus_property(self, value=None):
2132
1329
if value is None: # get
2133
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2134
old_timeout = self.timeout
1330
return dbus.UInt64(self.timeout_milliseconds())
2135
1331
self.timeout = datetime.timedelta(0, 0, 0, value)
2136
# Reschedule disabling
2137
if self.enabled:
2138
now = datetime.datetime.utcnow()
2139
self.expires += self.timeout - old_timeout
2140
if self.expires <= now:
2141
# The timeout has passed
2142
self.disable()
2143
else:
2144
if (getattr(self, "disable_initiator_tag", None)
2145
is None):
2146
return
2147
GLib.source_remove(self.disable_initiator_tag)
2148
self.disable_initiator_tag = GLib.timeout_add(
2149
int((self.expires - now).total_seconds() * 1000),
2150
self.disable)
2151
1332
if getattr(self, "disable_initiator_tag", None) is None:
1333
return
1334
# Reschedule timeout
1335
gobject.source_remove(self.disable_initiator_tag)
1336
self.disable_initiator_tag = None
1337
self.expires = None
1338
time_to_die = timedelta_to_milliseconds((self
1339
.last_checked_ok
1340
+ self.timeout)
1341
- datetime.datetime
1342
.utcnow())
1343
if time_to_die <= 0:
1344
# The timeout has passed
1345
self.disable()
1346
else:
1347
self.expires = (datetime.datetime.utcnow()
1348
+ datetime.timedelta(milliseconds =
1349
time_to_die))
1350
self.disable_initiator_tag = (gobject.timeout_add
1351
(time_to_die, self.disable))
1352
2152
1353
# ExtendedTimeout - property
2153
@dbus_service_property(_interface,
2154
signature="t",
1354
@dbus_service_property(_interface, signature="t",
2155
1355
access="readwrite")
2156
1356
def ExtendedTimeout_dbus_property(self, value=None):
2157
1357
if value is None: # get
2158
return dbus.UInt64(self.extended_timeout.total_seconds()
2159
* 1000)
1358
return dbus.UInt64(self.extended_timeout_milliseconds())
2160
1359
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2161
1360
2162
1361
# Interval - property
2163
@dbus_service_property(_interface,
2164
signature="t",
1362
@dbus_service_property(_interface, signature="t",
2165
1363
access="readwrite")
2166
1364
def Interval_dbus_property(self, value=None):
2167
1365
if value is None: # get
2168
return dbus.UInt64(self.interval.total_seconds() * 1000)
1366
return dbus.UInt64(self.interval_milliseconds())
2169
1367
self.interval = datetime.timedelta(0, 0, 0, value)
2170
1368
if getattr(self, "checker_initiator_tag", None) is None:
2171
1369
return
2172
1370
if self.enabled:
2173
1371
# Reschedule checker run
2174
GLib.source_remove(self.checker_initiator_tag)
2175
self.checker_initiator_tag = GLib.timeout_add(
2176
value, self.start_checker)
2177
self.start_checker() # Start one now, too
2178
1372
gobject.source_remove(self.checker_initiator_tag)
1373
self.checker_initiator_tag = (gobject.timeout_add
1374
(value, self.start_checker))
1375
self.start_checker() # Start one now, too
1376
2179
1377
# Checker - property
2180
@dbus_service_property(_interface,
2181
signature="s",
1378
@dbus_service_property(_interface, signature="s",
2182
1379
access="readwrite")
2183
1380
def Checker_dbus_property(self, value=None):
2184
1381
if value is None: # get
2185
1382
return dbus.String(self.checker_command)
2186
self.checker_command = str(value)
2187
1383
self.checker_command = unicode(value)
1384
2188
1385
# CheckerRunning - property
2189
@dbus_service_property(_interface,
2190
signature="b",
1386
@dbus_service_property(_interface, signature="b",
2191
1387
access="readwrite")
2192
1388
def CheckerRunning_dbus_property(self, value=None):
2193
1389
if value is None: # get
2196
1392
self.start_checker()
2197
1393
else:
2198
1394
self.stop_checker()
2199
1395
2200
1396
# ObjectPath - property
2201
@dbus_annotations(
2202
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2203
"org.freedesktop.DBus.Deprecated": "true"})
2204
1397
@dbus_service_property(_interface, signature="o", access="read")
2205
1398
def ObjectPath_dbus_property(self):
2206
return self.dbus_object_path # is already a dbus.ObjectPath
2207
1399
return self.dbus_object_path # is already a dbus.ObjectPath
1400
2208
1401
# Secret = property
2209
@dbus_annotations(
2210
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2211
"invalidates"})
2212
@dbus_service_property(_interface,
2213
signature="ay",
2214
access="write",
2215
byte_arrays=True)
1402
@dbus_service_property(_interface, signature="ay",
1403
access="write", byte_arrays=True)
2216
1404
def Secret_dbus_property(self, value):
2217
self.secret = bytes(value)
2218
1405
self.secret = str(value)
1406
2219
1407
del _interface
2220
1408
2221
1409
2222
1410
class ProxyClient(object):
2223
def __init__(self, child_pipe, key_id, fpr, address):
1411
def __init__(self, child_pipe, fpr, address):
2224
1412
self._pipe = child_pipe
2225
self._pipe.send(('init', key_id, fpr, address))
1413
self._pipe.send(('init', fpr, address))
2226
1414
if not self._pipe.recv():
2227
raise KeyError(key_id or fpr)
2228
1415
raise KeyError()
1416
2229
1417
def __getattribute__(self, name):
2230
1418
if name == '_pipe':
2231
1419
return super(ProxyClient, self).__getattribute__(name)
2234
1422
if data[0] == 'data':
2235
1423
return data[1]
2236
1424
if data[0] == 'function':
2237
2238
1425
def func(*args, **kwargs):
2239
1426
self._pipe.send(('funcall', name, args, kwargs))
2240
1427
return self._pipe.recv()[1]
2241
2242
1428
return func
2243
1429
2244
1430
def __setattr__(self, name, value):
2245
1431
if name == '_pipe':
2246
1432
return super(ProxyClient, self).__setattr__(name, value)
2247
1433
self._pipe.send(('setattr', name, value))
2248
1434
2249
1435
1436
class ClientDBusTransitional(ClientDBus):
1437
__metaclass__ = AlternateDBusNamesMetaclass
1438
1439
2250
1440
class ClientHandler(socketserver.BaseRequestHandler, object):
2251
1441
"""A class to handle client connections.
2252
1442
2253
1443
Instantiated once for each connection to handle it.
2254
1444
Note: This will run in its own forked process."""
2255
1445
2256
1446
def handle(self):
2257
1447
with contextlib.closing(self.server.child_pipe) as child_pipe:
2258
1448
logger.info("TCP connection from: %s",
2259
str(self.client_address))
1449
unicode(self.client_address))
2260
1450
logger.debug("Pipe FD: %d",
2261
1451
self.server.child_pipe.fileno())
2262
2263
session = gnutls.ClientSession(self.request)
2264
2265
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2266
# "+AES-256-CBC", "+SHA1",
2267
# "+COMP-NULL", "+CTYPE-OPENPGP",
2268
# "+DHE-DSS"))
1452
1453
session = (gnutls.connection
1454
.ClientSession(self.request,
1455
gnutls.connection
1456
.X509Credentials()))
1457
1458
# Note: gnutls.connection.X509Credentials is really a
1459
# generic GnuTLS certificate credentials object so long as
1460
# no X.509 keys are added to it. Therefore, we can use it
1461
# here despite using OpenPGP certificates.
1462
1463
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1464
# "+AES-256-CBC", "+SHA1",
1465
# "+COMP-NULL", "+CTYPE-OPENPGP",
1466
# "+DHE-DSS"))
2269
1467
# Use a fallback default, since this MUST be set.
2270
1468
priority = self.server.gnutls_priority
2271
1469
if priority is None:
2272
1470
priority = "NORMAL"
2273
gnutls.priority_set_direct(session._c_object,
2274
priority.encode("utf-8"),
2275
None)
2276
1471
(gnutls.library.functions
1472
.gnutls_priority_set_direct(session._c_object,
1473
priority, None))
1474
2277
1475
# Start communication using the Mandos protocol
2278
1476
# Get protocol number
2279
1477
line = self.request.makefile().readline()
2280
1478
logger.debug("Protocol version: %r", line)
2281
1479
try:
2282
1480
if int(line.strip().split()[0]) > 1:
2283
raise RuntimeError(line)
1481
raise RuntimeError
2284
1482
except (ValueError, IndexError, RuntimeError) as error:
2285
1483
logger.error("Unknown protocol version: %s", error)
2286
1484
return
2287
1485
2288
1486
# Start GnuTLS connection
2289
1487
try:
2290
1488
session.handshake()
2291
except gnutls.Error as error:
1489
except gnutls.errors.GNUTLSError as error:
2292
1490
logger.warning("Handshake failed: %s", error)
2293
1491
# Do not run session.bye() here: the session is not
2294
1492
# established. Just abandon the request.
2295
1493
return
2296
1494
logger.debug("Handshake succeeded")
2297
1495
2298
1496
approval_required = False
2299
1497
try:
2300
if gnutls.has_rawpk:
2301
fpr = ""
2302
try:
2303
key_id = self.key_id(
2304
self.peer_certificate(session))
2305
except (TypeError, gnutls.Error) as error:
2306
logger.warning("Bad certificate: %s", error)
2307
return
2308
logger.debug("Key ID: %s", key_id)
2309
2310
else:
2311
key_id = ""
2312
try:
2313
fpr = self.fingerprint(
2314
self.peer_certificate(session))
2315
except (TypeError, gnutls.Error) as error:
2316
logger.warning("Bad certificate: %s", error)
2317
return
2318
logger.debug("Fingerprint: %s", fpr)
2319
2320
try:
2321
client = ProxyClient(child_pipe, key_id, fpr,
1498
try:
1499
fpr = self.fingerprint(self.peer_certificate
1500
(session))
1501
except (TypeError,
1502
gnutls.errors.GNUTLSError) as error:
1503
logger.warning("Bad certificate: %s", error)
1504
return
1505
logger.debug("Fingerprint: %s", fpr)
1506
1507
try:
1508
client = ProxyClient(child_pipe, fpr,
2322
1509
self.client_address)
2323
1510
except KeyError:
2324
1511
return
2325
1512
1513
if self.server.use_dbus:
1514
# Emit D-Bus signal
1515
client.NewRequest(str(self.client_address))
1516
2326
1517
if client.approval_delay:
2327
1518
delay = client.approval_delay
2328
1519
client.approvals_pending += 1
2329
1520
approval_required = True
2330
1521
2331
1522
while True:
2332
1523
if not client.enabled:
2333
1524
logger.info("Client %s is disabled",
2334
client.name)
1525
client.name)
2335
1526
if self.server.use_dbus:
2336
1527
# Emit D-Bus signal
2337
1528
client.Rejected("Disabled")
2338
1529
return
2339
1530
2340
1531
if client.approved or not client.approval_delay:
2341
# We are approved or approval is disabled
1532
#We are approved or approval is disabled
2342
1533
break
2343
1534
elif client.approved is None:
2344
1535
logger.info("Client %s needs approval",
2346
1537
if self.server.use_dbus:
2347
1538
# Emit D-Bus signal
2348
1539
client.NeedApproval(
2349
client.approval_delay.total_seconds()
2350
* 1000, client.approved_by_default)
1540
client.approval_delay_milliseconds(),
1541
client.approved_by_default)
2351
1542
else:
2352
1543
logger.warning("Client %s was not approved",
2353
1544
client.name)
2355
1546
# Emit D-Bus signal
2356
1547
client.Rejected("Denied")
2357
1548
return
2358
2359
# wait until timeout or approved
1549
1550
#wait until timeout or approved
2360
1551
time = datetime.datetime.now()
2361
1552
client.changedstate.acquire()
2362
client.changedstate.wait(delay.total_seconds())
1553
(client.changedstate.wait
1554
(float(client.timedelta_to_milliseconds(delay)
1555
/ 1000)))
2363
1556
client.changedstate.release()
2364
1557
time2 = datetime.datetime.now()
2365
1558
if (time2 - time) >= delay:
2375
1568
break
2376
1569
else:
2377
1570
delay -= time2 - time
2378
2379
try:
2380
session.send(client.secret)
2381
except gnutls.Error as error:
2382
logger.warning("gnutls send failed",
2383
exc_info=error)
2384
return
2385
1571
1572
sent_size = 0
1573
while sent_size < len(client.secret):
1574
try:
1575
sent = session.send(client.secret[sent_size:])
1576
except gnutls.errors.GNUTLSError as error:
1577
logger.warning("gnutls send failed")
1578
return
1579
logger.debug("Sent: %d, remaining: %d",
1580
sent, len(client.secret)
1581
- (sent_size + sent))
1582
sent_size += sent
1583
2386
1584
logger.info("Sending secret to %s", client.name)
2387
1585
# bump the timeout using extended_timeout
2388
client.bump_timeout(client.extended_timeout)
1586
client.checked_ok(client.extended_timeout)
2389
1587
if self.server.use_dbus:
2390
1588
# Emit D-Bus signal
2391
1589
client.GotSecret()
2392
1590
2393
1591
finally:
2394
1592
if approval_required:
2395
1593
client.approvals_pending -= 1
2396
1594
try:
2397
1595
session.bye()
2398
except gnutls.Error as error:
2399
logger.warning("GnuTLS bye failed",
2400
exc_info=error)
2401
1596
except gnutls.errors.GNUTLSError as error:
1597
logger.warning("GnuTLS bye failed")
1598
2402
1599
@staticmethod
2403
1600
def peer_certificate(session):
2404
"Return the peer's certificate as a bytestring"
2405
try:
2406
cert_type = gnutls.certificate_type_get2(session._c_object,
2407
gnutls.CTYPE_PEERS)
2408
except AttributeError:
2409
cert_type = gnutls.certificate_type_get(session._c_object)
2410
if gnutls.has_rawpk:
2411
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2412
else:
2413
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2414
# If not a valid certificate type...
2415
if cert_type not in valid_cert_types:
2416
logger.info("Cert type %r not in %r", cert_type,
2417
valid_cert_types)
2418
# ...return invalid data
2419
return b""
1601
"Return the peer's OpenPGP certificate as a bytestring"
1602
# If not an OpenPGP certificate...
1603
if (gnutls.library.functions
1604
.gnutls_certificate_type_get(session._c_object)
1605
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1606
# ...do the normal thing
1607
return session.peer_certificate
2420
1608
list_size = ctypes.c_uint(1)
2421
cert_list = (gnutls.certificate_get_peers
1609
cert_list = (gnutls.library.functions
1610
.gnutls_certificate_get_peers
2422
1611
(session._c_object, ctypes.byref(list_size)))
2423
1612
if not bool(cert_list) and list_size.value != 0:
2424
raise gnutls.Error("error getting peer certificate")
1613
raise gnutls.errors.GNUTLSError("error getting peer"
1614
" certificate")
2425
1615
if list_size.value == 0:
2426
1616
return None
2427
1617
cert = cert_list[0]
2428
1618
return ctypes.string_at(cert.data, cert.size)
2429
2430
@staticmethod
2431
def key_id(certificate):
2432
"Convert a certificate bytestring to a hexdigit key ID"
2433
# New GnuTLS "datum" with the public key
2434
datum = gnutls.datum_t(
2435
ctypes.cast(ctypes.c_char_p(certificate),
2436
ctypes.POINTER(ctypes.c_ubyte)),
2437
ctypes.c_uint(len(certificate)))
2438
# XXX all these need to be created in the gnutls "module"
2439
# New empty GnuTLS certificate
2440
pubkey = gnutls.pubkey_t()
2441
gnutls.pubkey_init(ctypes.byref(pubkey))
2442
# Import the raw public key into the certificate
2443
gnutls.pubkey_import(pubkey,
2444
ctypes.byref(datum),
2445
gnutls.X509_FMT_DER)
2446
# New buffer for the key ID
2447
buf = ctypes.create_string_buffer(32)
2448
buf_len = ctypes.c_size_t(len(buf))
2449
# Get the key ID from the raw public key into the buffer
2450
gnutls.pubkey_get_key_id(pubkey,
2451
gnutls.KEYID_USE_SHA256,
2452
ctypes.cast(ctypes.byref(buf),
2453
ctypes.POINTER(ctypes.c_ubyte)),
2454
ctypes.byref(buf_len))
2455
# Deinit the certificate
2456
gnutls.pubkey_deinit(pubkey)
2457
2458
# Convert the buffer to a Python bytestring
2459
key_id = ctypes.string_at(buf, buf_len.value)
2460
# Convert the bytestring to hexadecimal notation
2461
hex_key_id = binascii.hexlify(key_id).upper()
2462
return hex_key_id
2463
1619
2464
1620
@staticmethod
2465
1621
def fingerprint(openpgp):
2466
1622
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2467
1623
# New GnuTLS "datum" with the OpenPGP public key
2468
datum = gnutls.datum_t(
2469
ctypes.cast(ctypes.c_char_p(openpgp),
2470
ctypes.POINTER(ctypes.c_ubyte)),
2471
ctypes.c_uint(len(openpgp)))
1624
datum = (gnutls.library.types
1625
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1626
ctypes.POINTER
1627
(ctypes.c_ubyte)),
1628
ctypes.c_uint(len(openpgp))))
2472
1629
# New empty GnuTLS certificate
2473
crt = gnutls.openpgp_crt_t()
2474
gnutls.openpgp_crt_init(ctypes.byref(crt))
1630
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1631
(gnutls.library.functions
1632
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2475
1633
# Import the OpenPGP public key into the certificate
2476
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2477
gnutls.OPENPGP_FMT_RAW)
1634
(gnutls.library.functions
1635
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1636
gnutls.library.constants
1637
.GNUTLS_OPENPGP_FMT_RAW))
2478
1638
# Verify the self signature in the key
2479
1639
crtverify = ctypes.c_uint()
2480
gnutls.openpgp_crt_verify_self(crt, 0,
2481
ctypes.byref(crtverify))
1640
(gnutls.library.functions
1641
.gnutls_openpgp_crt_verify_self(crt, 0,
1642
ctypes.byref(crtverify)))
2482
1643
if crtverify.value != 0:
2483
gnutls.openpgp_crt_deinit(crt)
2484
raise gnutls.CertificateSecurityError(code
2485
=crtverify.value)
1644
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1645
raise (gnutls.errors.CertificateSecurityError
1646
("Verify failed"))
2486
1647
# New buffer for the fingerprint
2487
1648
buf = ctypes.create_string_buffer(20)
2488
1649
buf_len = ctypes.c_size_t()
2489
1650
# Get the fingerprint from the certificate into the buffer
2490
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2491
ctypes.byref(buf_len))
1651
(gnutls.library.functions
1652
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1653
ctypes.byref(buf_len)))
2492
1654
# Deinit the certificate
2493
gnutls.openpgp_crt_deinit(crt)
1655
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2494
1656
# Convert the buffer to a Python bytestring
2495
1657
fpr = ctypes.string_at(buf, buf_len.value)
2496
1658
# Convert the bytestring to hexadecimal notation
2500
1662
2501
1663
class MultiprocessingMixIn(object):
2502
1664
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2503
2504
1665
def sub_process_main(self, request, address):
2505
1666
try:
2506
1667
self.finish_request(request, address)
2507
except Exception:
1668
except:
2508
1669
self.handle_error(request, address)
2509
1670
self.close_request(request)
2510
1671
2511
1672
def process_request(self, request, address):
2512
1673
"""Start a new process to process the request."""
2513
proc = multiprocessing.Process(target=self.sub_process_main,
2514
args=(request, address))
1674
proc = multiprocessing.Process(target = self.sub_process_main,
1675
args = (request,
1676
address))
2515
1677
proc.start()
2516
1678
return proc
2517
1679
2518
1680
2519
1681
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2520
1682
""" adds a pipe to the MixIn """
2521
2522
1683
def process_request(self, request, client_address):
2523
1684
"""Overrides and wraps the original process_request().
2524
1685
2525
1686
This function creates a new pipe in self.pipe
2526
1687
"""
2527
1688
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2528
1689
2529
1690
proc = MultiprocessingMixIn.process_request(self, request,
2530
1691
client_address)
2531
1692
self.child_pipe.close()
2532
1693
self.add_pipe(parent_pipe, proc)
2533
1694
2534
1695
def add_pipe(self, parent_pipe, proc):
2535
1696
"""Dummy function; override as necessary"""
2536
raise NotImplementedError()
1697
raise NotImplementedError
2537
1698
2538
1699
2539
1700
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2540
1701
socketserver.TCPServer, object):
2541
1702
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2542
1703
2543
1704
Attributes:
2544
1705
enabled: Boolean; whether this server is activated yet
2545
1706
interface: None or a network interface name (string)
2546
1707
use_ipv6: Boolean; to use IPv6 or not
2547
1708
"""
2548
2549
1709
def __init__(self, server_address, RequestHandlerClass,
2550
interface=None,
2551
use_ipv6=True,
2552
socketfd=None):
2553
"""If socketfd is set, use that file descriptor instead of
2554
creating a new one with socket.socket().
2555
"""
1710
interface=None, use_ipv6=True):
2556
1711
self.interface = interface
2557
1712
if use_ipv6:
2558
1713
self.address_family = socket.AF_INET6
2559
if socketfd is not None:
2560
# Save the file descriptor
2561
self.socketfd = socketfd
2562
# Save the original socket.socket() function
2563
self.socket_socket = socket.socket
2564
2565
# To implement --socket, we monkey patch socket.socket.
2566
#
2567
# (When socketserver.TCPServer is a new-style class, we
2568
# could make self.socket into a property instead of monkey
2569
# patching socket.socket.)
2570
#
2571
# Create a one-time-only replacement for socket.socket()
2572
@functools.wraps(socket.socket)
2573
def socket_wrapper(*args, **kwargs):
2574
# Restore original function so subsequent calls are
2575
# not affected.
2576
socket.socket = self.socket_socket
2577
del self.socket_socket
2578
# This time only, return a new socket object from the
2579
# saved file descriptor.
2580
return socket.fromfd(self.socketfd, *args, **kwargs)
2581
# Replace socket.socket() function with wrapper
2582
socket.socket = socket_wrapper
2583
# The socketserver.TCPServer.__init__ will call
2584
# socket.socket(), which might be our replacement,
2585
# socket_wrapper(), if socketfd was set.
2586
1714
socketserver.TCPServer.__init__(self, server_address,
2587
1715
RequestHandlerClass)
2588
2589
1716
def server_bind(self):
2590
1717
"""This overrides the normal server_bind() function
2591
1718
to bind to an interface if one was specified, and also NOT to
2592
1719
bind to an address or port if they were not specified."""
2593
global SO_BINDTODEVICE
2594
1720
if self.interface is not None:
2595
1721
if SO_BINDTODEVICE is None:
2596
# Fall back to a hard-coded value which seems to be
2597
# common enough.
2598
logger.warning("SO_BINDTODEVICE not found, trying 25")
2599
SO_BINDTODEVICE = 25
2600
try:
2601
self.socket.setsockopt(
2602
socket.SOL_SOCKET, SO_BINDTODEVICE,
2603
(self.interface + "\0").encode("utf-8"))
2604
except socket.error as error:
2605
if error.errno == errno.EPERM:
2606
logger.error("No permission to bind to"
2607
" interface %s", self.interface)
2608
elif error.errno == errno.ENOPROTOOPT:
2609
logger.error("SO_BINDTODEVICE not available;"
2610
" cannot bind to interface %s",
2611
self.interface)
2612
elif error.errno == errno.ENODEV:
2613
logger.error("Interface %s does not exist,"
2614
" cannot bind", self.interface)
2615
else:
2616
raise
1722
logger.error("SO_BINDTODEVICE does not exist;"
1723
" cannot bind to interface %s",
1724
self.interface)
1725
else:
1726
try:
1727
self.socket.setsockopt(socket.SOL_SOCKET,
1728
SO_BINDTODEVICE,
1729
str(self.interface
1730
+ '\0'))
1731
except socket.error as error:
1732
if error[0] == errno.EPERM:
1733
logger.error("No permission to"
1734
" bind to interface %s",
1735
self.interface)
1736
elif error[0] == errno.ENOPROTOOPT:
1737
logger.error("SO_BINDTODEVICE not available;"
1738
" cannot bind to interface %s",
1739
self.interface)
1740
else:
1741
raise
2617
1742
# Only bind(2) the socket if we really need to.
2618
1743
if self.server_address[0] or self.server_address[1]:
2619
1744
if not self.server_address[0]:
2620
1745
if self.address_family == socket.AF_INET6:
2621
any_address = "::" # in6addr_any
1746
any_address = "::" # in6addr_any
2622
1747
else:
2623
any_address = "0.0.0.0" # INADDR_ANY
1748
any_address = socket.INADDR_ANY
2624
1749
self.server_address = (any_address,
2625
1750
self.server_address[1])
2626
1751
elif not self.server_address[1]:
2627
self.server_address = (self.server_address[0], 0)
1752
self.server_address = (self.server_address[0],
1753
0)
2628
1754
# if self.interface:
2629
1755
# self.server_address = (self.server_address[0],
2630
1756
# 0, # port
2636
1762
2637
1763
class MandosServer(IPv6_TCPServer):
2638
1764
"""Mandos server.
2639
1765
2640
1766
Attributes:
2641
1767
clients: set of Client objects
2642
1768
gnutls_priority GnuTLS priority string
2643
1769
use_dbus: Boolean; to emit D-Bus signals or not
2644
2645
Assumes a GLib.MainLoop event loop.
1770
1771
Assumes a gobject.MainLoop event loop.
2646
1772
"""
2647
2648
1773
def __init__(self, server_address, RequestHandlerClass,
2649
interface=None,
2650
use_ipv6=True,
2651
clients=None,
2652
gnutls_priority=None,
2653
use_dbus=True,
2654
socketfd=None):
1774
interface=None, use_ipv6=True, clients=None,
1775
gnutls_priority=None, use_dbus=True):
2655
1776
self.enabled = False
2656
1777
self.clients = clients
2657
1778
if self.clients is None:
2660
1781
self.gnutls_priority = gnutls_priority
2661
1782
IPv6_TCPServer.__init__(self, server_address,
2662
1783
RequestHandlerClass,
2663
interface=interface,
2664
use_ipv6=use_ipv6,
2665
socketfd=socketfd)
2666
1784
interface = interface,
1785
use_ipv6 = use_ipv6)
2667
1786
def server_activate(self):
2668
1787
if self.enabled:
2669
1788
return socketserver.TCPServer.server_activate(self)
2670
1789
2671
1790
def enable(self):
2672
1791
self.enabled = True
2673
1792
2674
1793
def add_pipe(self, parent_pipe, proc):
2675
1794
# Call "handle_ipc" for both data and EOF events
2676
GLib.io_add_watch(
2677
parent_pipe.fileno(),
2678
GLib.IO_IN | GLib.IO_HUP,
2679
functools.partial(self.handle_ipc,
2680
parent_pipe=parent_pipe,
2681
proc=proc))
2682
2683
def handle_ipc(self, source, condition,
2684
parent_pipe=None,
2685
proc=None,
2686
client_object=None):
1795
gobject.io_add_watch(parent_pipe.fileno(),
1796
gobject.IO_IN | gobject.IO_HUP,
1797
functools.partial(self.handle_ipc,
1798
parent_pipe =
1799
parent_pipe,
1800
proc = proc))
1801
1802
def handle_ipc(self, source, condition, parent_pipe=None,
1803
proc = None, client_object=None):
1804
condition_names = {
1805
gobject.IO_IN: "IN", # There is data to read.
1806
gobject.IO_OUT: "OUT", # Data can be written (without
1807
# blocking).
1808
gobject.IO_PRI: "PRI", # There is urgent data to read.
1809
gobject.IO_ERR: "ERR", # Error condition.
1810
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1811
# broken, usually for pipes and
1812
# sockets).
1813
}
1814
conditions_string = ' | '.join(name
1815
for cond, name in
1816
condition_names.iteritems()
1817
if cond & condition)
2687
1818
# error, or the other end of multiprocessing.Pipe has closed
2688
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1819
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2689
1820
# Wait for other process to exit
2690
1821
proc.join()
2691
1822
return False
2692
1823
2693
1824
# Read a request from the child
2694
1825
request = parent_pipe.recv()
2695
1826
command = request[0]
2696
1827
2697
1828
if command == 'init':
2698
key_id = request[1].decode("ascii")
2699
fpr = request[2].decode("ascii")
2700
address = request[3]
2701
2702
for c in self.clients.values():
2703
if key_id and c.key_id == key_id:
2704
client = c
2705
break
2706
if fpr and c.fingerprint == fpr:
1829
fpr = request[1]
1830
address = request[2]
1831
1832
for c in self.clients.itervalues():
1833
if c.fingerprint == fpr:
2707
1834
client = c
2708
1835
break
2709
1836
else:
2710
logger.info("Client not found for key ID: %s, address"
2711
": %s", key_id or fpr, address)
1837
logger.info("Client not found for fingerprint: %s, ad"
1838
"dress: %s", fpr, address)
2712
1839
if self.use_dbus:
2713
1840
# Emit D-Bus signal
2714
mandos_dbus_service.ClientNotFound(key_id or fpr,
1841
mandos_dbus_service.ClientNotFound(fpr,
2715
1842
address[0])
2716
1843
parent_pipe.send(False)
2717
1844
return False
2718
2719
GLib.io_add_watch(
2720
parent_pipe.fileno(),
2721
GLib.IO_IN | GLib.IO_HUP,
2722
functools.partial(self.handle_ipc,
2723
parent_pipe=parent_pipe,
2724
proc=proc,
2725
client_object=client))
1845
1846
gobject.io_add_watch(parent_pipe.fileno(),
1847
gobject.IO_IN | gobject.IO_HUP,
1848
functools.partial(self.handle_ipc,
1849
parent_pipe =
1850
parent_pipe,
1851
proc = proc,
1852
client_object =
1853
client))
2726
1854
parent_pipe.send(True)
2727
1855
# remove the old hook in favor of the new above hook on
2728
1856
# same fileno
2731
1859
funcname = request[1]
2732
1860
args = request[2]
2733
1861
kwargs = request[3]
2734
1862
2735
1863
parent_pipe.send(('data', getattr(client_object,
2736
1864
funcname)(*args,
2737
**kwargs)))
2738
1865
**kwargs)))
1866
2739
1867
if command == 'getattr':
2740
1868
attrname = request[1]
2741
if isinstance(client_object.__getattribute__(attrname),
2742
collections.Callable):
2743
parent_pipe.send(('function', ))
1869
if callable(client_object.__getattribute__(attrname)):
1870
parent_pipe.send(('function',))
2744
1871
else:
2745
parent_pipe.send((
2746
'data', client_object.__getattribute__(attrname)))
2747
1872
parent_pipe.send(('data', client_object
1873
.__getattribute__(attrname)))
1874
2748
1875
if command == 'setattr':
2749
1876
attrname = request[1]
2750
1877
value = request[2]
2751
1878
setattr(client_object, attrname, value)
2752
1879
2753
1880
return True
2754
1881
2755
1882
2756
def rfc3339_duration_to_delta(duration):
2757
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2758
2759
>>> rfc3339_duration_to_delta("P7D")
2760
datetime.timedelta(7)
2761
>>> rfc3339_duration_to_delta("PT60S")
2762
datetime.timedelta(0, 60)
2763
>>> rfc3339_duration_to_delta("PT60M")
2764
datetime.timedelta(0, 3600)
2765
>>> rfc3339_duration_to_delta("PT24H")
2766
datetime.timedelta(1)
2767
>>> rfc3339_duration_to_delta("P1W")
2768
datetime.timedelta(7)
2769
>>> rfc3339_duration_to_delta("PT5M30S")
2770
datetime.timedelta(0, 330)
2771
>>> rfc3339_duration_to_delta("P1DT3M20S")
2772
datetime.timedelta(1, 200)
2773
"""
2774
2775
# Parsing an RFC 3339 duration with regular expressions is not
2776
# possible - there would have to be multiple places for the same
2777
# values, like seconds. The current code, while more esoteric, is
2778
# cleaner without depending on a parsing library. If Python had a
2779
# built-in library for parsing we would use it, but we'd like to
2780
# avoid excessive use of external libraries.
2781
2782
# New type for defining tokens, syntax, and semantics all-in-one
2783
Token = collections.namedtuple("Token", (
2784
"regexp", # To match token; if "value" is not None, must have
2785
# a "group" containing digits
2786
"value", # datetime.timedelta or None
2787
"followers")) # Tokens valid after this token
2788
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2789
# the "duration" ABNF definition in RFC 3339, Appendix A.
2790
token_end = Token(re.compile(r"$"), None, frozenset())
2791
token_second = Token(re.compile(r"(\d+)S"),
2792
datetime.timedelta(seconds=1),
2793
frozenset((token_end, )))
2794
token_minute = Token(re.compile(r"(\d+)M"),
2795
datetime.timedelta(minutes=1),
2796
frozenset((token_second, token_end)))
2797
token_hour = Token(re.compile(r"(\d+)H"),
2798
datetime.timedelta(hours=1),
2799
frozenset((token_minute, token_end)))
2800
token_time = Token(re.compile(r"T"),
2801
None,
2802
frozenset((token_hour, token_minute,
2803
token_second)))
2804
token_day = Token(re.compile(r"(\d+)D"),
2805
datetime.timedelta(days=1),
2806
frozenset((token_time, token_end)))
2807
token_month = Token(re.compile(r"(\d+)M"),
2808
datetime.timedelta(weeks=4),
2809
frozenset((token_day, token_end)))
2810
token_year = Token(re.compile(r"(\d+)Y"),
2811
datetime.timedelta(weeks=52),
2812
frozenset((token_month, token_end)))
2813
token_week = Token(re.compile(r"(\d+)W"),
2814
datetime.timedelta(weeks=1),
2815
frozenset((token_end, )))
2816
token_duration = Token(re.compile(r"P"), None,
2817
frozenset((token_year, token_month,
2818
token_day, token_time,
2819
token_week)))
2820
# Define starting values:
2821
# Value so far
2822
value = datetime.timedelta()
2823
found_token = None
2824
# Following valid tokens
2825
followers = frozenset((token_duration, ))
2826
# String left to parse
2827
s = duration
2828
# Loop until end token is found
2829
while found_token is not token_end:
2830
# Search for any currently valid tokens
2831
for token in followers:
2832
match = token.regexp.match(s)
2833
if match is not None:
2834
# Token found
2835
if token.value is not None:
2836
# Value found, parse digits
2837
factor = int(match.group(1), 10)
2838
# Add to value so far
2839
value += factor * token.value
2840
# Strip token from string
2841
s = token.regexp.sub("", s, 1)
2842
# Go to found token
2843
found_token = token
2844
# Set valid next tokens
2845
followers = found_token.followers
2846
break
2847
else:
2848
# No currently valid tokens were found
2849
raise ValueError("Invalid RFC 3339 duration: {!r}"
2850
.format(duration))
2851
# End token found
2852
return value
2853
2854
2855
1883
def string_to_delta(interval):
2856
1884
"""Parse a string and return a datetime.timedelta
2857
1885
2858
1886
>>> string_to_delta('7d')
2859
1887
datetime.timedelta(7)
2860
1888
>>> string_to_delta('60s')
2868
1896
>>> string_to_delta('5m 30s')
2869
1897
datetime.timedelta(0, 330)
2870
1898
"""
2871
2872
try:
2873
return rfc3339_duration_to_delta(interval)
2874
except ValueError:
2875
pass
2876
2877
1899
timevalue = datetime.timedelta(0)
2878
1900
for s in interval.split():
2879
1901
try:
2880
suffix = s[-1]
1902
suffix = unicode(s[-1])
2881
1903
value = int(s[:-1])
2882
1904
if suffix == "d":
2883
1905
delta = datetime.timedelta(value)
2890
1912
elif suffix == "w":
2891
1913
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2892
1914
else:
2893
raise ValueError("Unknown suffix {!r}".format(suffix))
2894
except IndexError as e:
1915
raise ValueError("Unknown suffix %r" % suffix)
1916
except (ValueError, IndexError) as e:
2895
1917
raise ValueError(*(e.args))
2896
1918
timevalue += delta
2897
1919
return timevalue
2898
1920
2899
1921
2900
def daemon(nochdir=False, noclose=False):
1922
def daemon(nochdir = False, noclose = False):
2901
1923
"""See daemon(3). Standard BSD Unix function.
2902
1924
2903
1925
This should really exist as os.daemon, but it doesn't (yet)."""
2904
1926
if os.fork():
2905
1927
sys.exit()
2910
1932
sys.exit()
2911
1933
if not noclose:
2912
1934
# Close all standard open file descriptors
2913
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1935
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2914
1936
if not stat.S_ISCHR(os.fstat(null).st_mode):
2915
1937
raise OSError(errno.ENODEV,
2916
"{} not a character device"
2917
.format(os.devnull))
1938
"%s not a character device"
1939
% os.path.devnull)
2918
1940
os.dup2(null, sys.stdin.fileno())
2919
1941
os.dup2(null, sys.stdout.fileno())
2920
1942
os.dup2(null, sys.stderr.fileno())
2923
1945
2924
1946
2925
1947
def main():
2926
1948
2927
1949
##################################################################
2928
1950
# Parsing of options, both command line and config file
2929
1951
2930
1952
parser = argparse.ArgumentParser()
2931
1953
parser.add_argument("-v", "--version", action="version",
2932
version="%(prog)s {}".format(version),
1954
version = "%%(prog)s %s" % version,
2933
1955
help="show version number and exit")
2934
1956
parser.add_argument("-i", "--interface", metavar="IF",
2935
1957
help="Bind to interface IF")
2941
1963
help="Run self-test")
2942
1964
parser.add_argument("--debug", action="store_true",
2943
1965
help="Debug mode; run in foreground and log"
2944
" to terminal", default=None)
1966
" to terminal")
2945
1967
parser.add_argument("--debuglevel", metavar="LEVEL",
2946
1968
help="Debug level for stdout output")
2947
1969
parser.add_argument("--priority", help="GnuTLS"
2954
1976
" files")
2955
1977
parser.add_argument("--no-dbus", action="store_false",
2956
1978
dest="use_dbus", help="Do not provide D-Bus"
2957
" system bus interface", default=None)
1979
" system bus interface")
2958
1980
parser.add_argument("--no-ipv6", action="store_false",
2959
dest="use_ipv6", help="Do not use IPv6",
2960
default=None)
1981
dest="use_ipv6", help="Do not use IPv6")
2961
1982
parser.add_argument("--no-restore", action="store_false",
2962
1983
dest="restore", help="Do not restore stored"
2963
" state", default=None)
2964
parser.add_argument("--socket", type=int,
2965
help="Specify a file descriptor to a network"
2966
" socket to use instead of creating one")
1984
" state")
2967
1985
parser.add_argument("--statedir", metavar="DIR",
2968
1986
help="Directory to save/restore state in")
2969
parser.add_argument("--foreground", action="store_true",
2970
help="Run in foreground", default=None)
2971
parser.add_argument("--no-zeroconf", action="store_false",
2972
dest="zeroconf", help="Do not use Zeroconf",
2973
default=None)
2974
1987
2975
1988
options = parser.parse_args()
2976
1989
2977
1990
if options.check:
2978
1991
import doctest
2979
fail_count, test_count = doctest.testmod()
2980
sys.exit(os.EX_OK if fail_count == 0 else 1)
2981
1992
doctest.testmod()
1993
sys.exit()
1994
2982
1995
# Default values for config file for server-global settings
2983
if gnutls.has_rawpk:
2984
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2985
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2986
else:
2987
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2988
":+SIGN-DSA-SHA256")
2989
server_defaults = {"interface": "",
2990
"address": "",
2991
"port": "",
2992
"debug": "False",
2993
"priority": priority,
2994
"servicename": "Mandos",
2995
"use_dbus": "True",
2996
"use_ipv6": "True",
2997
"debuglevel": "",
2998
"restore": "True",
2999
"socket": "",
3000
"statedir": "/var/lib/mandos",
3001
"foreground": "False",
3002
"zeroconf": "True",
3003
}
3004
del priority
3005
1996
server_defaults = { "interface": "",
1997
"address": "",
1998
"port": "",
1999
"debug": "False",
2000
"priority":
2001
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2002
"servicename": "Mandos",
2003
"use_dbus": "True",
2004
"use_ipv6": "True",
2005
"debuglevel": "",
2006
"restore": "True",
2007
"statedir": "/var/lib/mandos"
2008
}
2009
3006
2010
# Parse config file for server-global settings
3007
2011
server_config = configparser.SafeConfigParser(server_defaults)
3008
2012
del server_defaults
3009
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2013
server_config.read(os.path.join(options.configdir,
2014
"mandos.conf"))
3010
2015
# Convert the SafeConfigParser object to a dict
3011
2016
server_settings = server_config.defaults()
3012
2017
# Use the appropriate methods on the non-string config options
3013
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3014
"foreground", "zeroconf"):
2018
for option in ("debug", "use_dbus", "use_ipv6"):
3015
2019
server_settings[option] = server_config.getboolean("DEFAULT",
3016
2020
option)
3017
2021
if server_settings["port"]:
3018
2022
server_settings["port"] = server_config.getint("DEFAULT",
3019
2023
"port")
3020
if server_settings["socket"]:
3021
server_settings["socket"] = server_config.getint("DEFAULT",
3022
"socket")
3023
# Later, stdin will, and stdout and stderr might, be dup'ed
3024
# over with an opened os.devnull. But we don't want this to
3025
# happen with a supplied network socket.
3026
if 0 <= server_settings["socket"] <= 2:
3027
server_settings["socket"] = os.dup(server_settings
3028
["socket"])
3029
2024
del server_config
3030
2025
3031
2026
# Override the settings from the config file with command line
3032
2027
# options, if set.
3033
2028
for option in ("interface", "address", "port", "debug",
3034
"priority", "servicename", "configdir", "use_dbus",
3035
"use_ipv6", "debuglevel", "restore", "statedir",
3036
"socket", "foreground", "zeroconf"):
2029
"priority", "servicename", "configdir",
2030
"use_dbus", "use_ipv6", "debuglevel", "restore",
2031
"statedir"):
3037
2032
value = getattr(options, option)
3038
2033
if value is not None:
3039
2034
server_settings[option] = value
3040
2035
del options
3041
2036
# Force all strings to be unicode
3042
2037
for option in server_settings.keys():
3043
if isinstance(server_settings[option], bytes):
3044
server_settings[option] = (server_settings[option]
3045
.decode("utf-8"))
3046
# Force all boolean options to be boolean
3047
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3048
"foreground", "zeroconf"):
3049
server_settings[option] = bool(server_settings[option])
3050
# Debug implies foreground
3051
if server_settings["debug"]:
3052
server_settings["foreground"] = True
2038
if type(server_settings[option]) is str:
2039
server_settings[option] = unicode(server_settings[option])
3053
2040
# Now we have our good server settings in "server_settings"
3054
2041
3055
2042
##################################################################
3056
3057
if (not server_settings["zeroconf"]
3058
and not (server_settings["port"]
3059
or server_settings["socket"] != "")):
3060
parser.error("Needs port or socket to work without Zeroconf")
3061
2043
3062
2044
# For convenience
3063
2045
debug = server_settings["debug"]
3064
2046
debuglevel = server_settings["debuglevel"]
3066
2048
use_ipv6 = server_settings["use_ipv6"]
3067
2049
stored_state_path = os.path.join(server_settings["statedir"],
3068
2050
stored_state_file)
3069
foreground = server_settings["foreground"]
3070
zeroconf = server_settings["zeroconf"]
3071
2051
3072
2052
if debug:
3073
initlogger(debug, logging.DEBUG)
2053
initlogger(logging.DEBUG)
3074
2054
else:
3075
2055
if not debuglevel:
3076
initlogger(debug)
2056
initlogger()
3077
2057
else:
3078
2058
level = getattr(logging, debuglevel.upper())
3079
initlogger(debug, level)
3080
2059
initlogger(level)
2060
3081
2061
if server_settings["servicename"] != "Mandos":
3082
syslogger.setFormatter(
3083
logging.Formatter('Mandos ({}) [%(process)d]:'
3084
' %(levelname)s: %(message)s'.format(
3085
server_settings["servicename"])))
3086
2062
syslogger.setFormatter(logging.Formatter
2063
('Mandos (%s) [%%(process)d]:'
2064
' %%(levelname)s: %%(message)s'
2065
% server_settings["servicename"]))
2066
3087
2067
# Parse config file with clients
3088
client_config = configparser.SafeConfigParser(Client
3089
.client_defaults)
2068
client_defaults = { "timeout": "5m",
2069
"extended_timeout": "15m",
2070
"interval": "2m",
2071
"checker": "fping -q -- %%(host)s",
2072
"host": "",
2073
"approval_delay": "0s",
2074
"approval_duration": "1s",
2075
}
2076
client_config = configparser.SafeConfigParser(client_defaults)
3090
2077
client_config.read(os.path.join(server_settings["configdir"],
3091
2078
"clients.conf"))
3092
2079
3093
2080
global mandos_dbus_service
3094
2081
mandos_dbus_service = None
3095
3096
socketfd = None
3097
if server_settings["socket"] != "":
3098
socketfd = server_settings["socket"]
3099
tcp_server = MandosServer(
3100
(server_settings["address"], server_settings["port"]),
3101
ClientHandler,
3102
interface=(server_settings["interface"] or None),
3103
use_ipv6=use_ipv6,
3104
gnutls_priority=server_settings["priority"],
3105
use_dbus=use_dbus,
3106
socketfd=socketfd)
3107
if not foreground:
3108
pidfilename = "/run/mandos.pid"
3109
if not os.path.isdir("/run/."):
3110
pidfilename = "/var/run/mandos.pid"
3111
pidfile = None
3112
try:
3113
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3114
except IOError as e:
3115
logger.error("Could not open file %r", pidfilename,
3116
exc_info=e)
3117
3118
for name, group in (("_mandos", "_mandos"),
3119
("mandos", "mandos"),
3120
("nobody", "nogroup")):
3121
try:
3122
uid = pwd.getpwnam(name).pw_uid
3123
gid = pwd.getpwnam(group).pw_gid
3124
break
2082
2083
tcp_server = MandosServer((server_settings["address"],
2084
server_settings["port"]),
2085
ClientHandler,
2086
interface=(server_settings["interface"]
2087
or None),
2088
use_ipv6=use_ipv6,
2089
gnutls_priority=
2090
server_settings["priority"],
2091
use_dbus=use_dbus)
2092
if not debug:
2093
pidfilename = "/var/run/mandos.pid"
2094
try:
2095
pidfile = open(pidfilename, "w")
2096
except IOError:
2097
logger.error("Could not open file %r", pidfilename)
2098
2099
try:
2100
uid = pwd.getpwnam("_mandos").pw_uid
2101
gid = pwd.getpwnam("_mandos").pw_gid
2102
except KeyError:
2103
try:
2104
uid = pwd.getpwnam("mandos").pw_uid
2105
gid = pwd.getpwnam("mandos").pw_gid
3125
2106
except KeyError:
3126
continue
3127
else:
3128
uid = 65534
3129
gid = 65534
2107
try:
2108
uid = pwd.getpwnam("nobody").pw_uid
2109
gid = pwd.getpwnam("nobody").pw_gid
2110
except KeyError:
2111
uid = 65534
2112
gid = 65534
3130
2113
try:
3131
2114
os.setgid(gid)
3132
2115
os.setuid(uid)
3133
if debug:
3134
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3135
gid))
3136
2116
except OSError as error:
3137
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3138
.format(uid, gid, os.strerror(error.errno)))
3139
if error.errno != errno.EPERM:
3140
raise
3141
2117
if error[0] != errno.EPERM:
2118
raise error
2119
3142
2120
if debug:
3143
2121
# Enable all possible GnuTLS debugging
3144
2122
3145
2123
# "Use a log level over 10 to enable all debugging options."
3146
2124
# - GnuTLS manual
3147
gnutls.global_set_log_level(11)
3148
3149
@gnutls.log_func
2125
gnutls.library.functions.gnutls_global_set_log_level(11)
2126
2127
@gnutls.library.types.gnutls_log_func
3150
2128
def debug_gnutls(level, string):
3151
2129
logger.debug("GnuTLS: %s", string[:-1])
3152
3153
gnutls.global_set_log_function(debug_gnutls)
3154
2130
2131
(gnutls.library.functions
2132
.gnutls_global_set_log_function(debug_gnutls))
2133
3155
2134
# Redirect stdin so all checkers get /dev/null
3156
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2135
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3157
2136
os.dup2(null, sys.stdin.fileno())
3158
2137
if null > 2:
3159
2138
os.close(null)
3160
2139
else:
2140
# No console logging
2141
logger.removeHandler(console)
2142
3161
2143
# Need to fork before connecting to D-Bus
3162
if not foreground:
2144
if not debug:
3163
2145
# Close all input and output, do double fork, etc.
3164
2146
daemon()
3165
3166
# multiprocessing will use threads, so before we use GLib we need
3167
# to inform GLib that threads will be used.
3168
GLib.threads_init()
3169
2147
3170
2148
global main_loop
3171
2149
# From the Avahi example code
3172
DBusGMainLoop(set_as_default=True)
3173
main_loop = GLib.MainLoop()
2150
DBusGMainLoop(set_as_default=True )
2151
main_loop = gobject.MainLoop()
3174
2152
bus = dbus.SystemBus()
3175
2153
# End of Avahi example code
3176
2154
if use_dbus:
3177
2155
try:
3178
2156
bus_name = dbus.service.BusName("se.recompile.Mandos",
3179
bus,
3180
do_not_queue=True)
3181
old_bus_name = dbus.service.BusName(
3182
"se.bsnet.fukt.Mandos", bus,
3183
do_not_queue=True)
3184
except dbus.exceptions.DBusException as e:
3185
logger.error("Disabling D-Bus:", exc_info=e)
2157
bus, do_not_queue=True)
2158
old_bus_name = (dbus.service.BusName
2159
("se.bsnet.fukt.Mandos", bus,
2160
do_not_queue=True))
2161
except dbus.exceptions.NameExistsException as e:
2162
logger.error(unicode(e) + ", disabling D-Bus")
3186
2163
use_dbus = False
3187
2164
server_settings["use_dbus"] = False
3188
2165
tcp_server.use_dbus = False
3189
if zeroconf:
3190
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3191
service = AvahiServiceToSyslog(
3192
name=server_settings["servicename"],
3193
servicetype="_mandos._tcp",
3194
protocol=protocol,
3195
bus=bus)
3196
if server_settings["interface"]:
3197
service.interface = if_nametoindex(
3198
server_settings["interface"].encode("utf-8"))
3199
2166
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2167
service = AvahiServiceToSyslog(name =
2168
server_settings["servicename"],
2169
servicetype = "_mandos._tcp",
2170
protocol = protocol, bus = bus)
2171
if server_settings["interface"]:
2172
service.interface = (if_nametoindex
2173
(str(server_settings["interface"])))
2174
3200
2175
global multiprocessing_manager
3201
2176
multiprocessing_manager = multiprocessing.Manager()
3202
2177
3203
2178
client_class = Client
3204
2179
if use_dbus:
3205
client_class = functools.partial(ClientDBus, bus=bus)
3206
3207
client_settings = Client.config_parser(client_config)
2180
client_class = functools.partial(ClientDBusTransitional,
2181
bus = bus)
2182
2183
special_settings = {
2184
# Some settings need to be accessd by special methods;
2185
# booleans need .getboolean(), etc. Here is a list of them:
2186
"approved_by_default":
2187
lambda section:
2188
client_config.getboolean(section, "approved_by_default"),
2189
"enabled":
2190
lambda section:
2191
client_config.getboolean(section, "enabled"),
2192
}
2193
# Construct a new dict of client settings of this form:
2194
# { client_name: {setting_name: value, ...}, ...}
2195
# with exceptions for any special settings as defined above
2196
client_settings = dict((clientname,
2197
dict((setting,
2198
(value
2199
if setting not in special_settings
2200
else special_settings[setting]
2201
(clientname)))
2202
for setting, value in
2203
client_config.items(clientname)))
2204
for clientname in client_config.sections())
2205
3208
2206
old_client_settings = {}
3209
clients_data = {}
3210
3211
# This is used to redirect stdout and stderr for checker processes
3212
global wnull
3213
wnull = open(os.devnull, "w") # A writable /dev/null
3214
# Only used if server is running in foreground but not in debug
3215
# mode
3216
if debug or not foreground:
3217
wnull.close()
3218
2207
clients_data = []
2208
3219
2209
# Get client data and settings from last running state.
3220
2210
if server_settings["restore"]:
3221
2211
try:
3222
2212
with open(stored_state_path, "rb") as stored_state:
3223
if sys.version_info.major == 2:
3224
clients_data, old_client_settings = pickle.load(
3225
stored_state)
3226
else:
3227
bytes_clients_data, bytes_old_client_settings = (
3228
pickle.load(stored_state, encoding="bytes"))
3229
# Fix bytes to strings
3230
# clients_data
3231
# .keys()
3232
clients_data = {(key.decode("utf-8")
3233
if isinstance(key, bytes)
3234
else key): value
3235
for key, value in
3236
bytes_clients_data.items()}
3237
del bytes_clients_data
3238
for key in clients_data:
3239
value = {(k.decode("utf-8")
3240
if isinstance(k, bytes) else k): v
3241
for k, v in
3242
clients_data[key].items()}
3243
clients_data[key] = value
3244
# .client_structure
3245
value["client_structure"] = [
3246
(s.decode("utf-8")
3247
if isinstance(s, bytes)
3248
else s) for s in
3249
value["client_structure"]]
3250
# .name & .host
3251
for k in ("name", "host"):
3252
if isinstance(value[k], bytes):
3253
value[k] = value[k].decode("utf-8")
3254
if not value.has_key("key_id"):
3255
value["key_id"] = ""
3256
elif not value.has_key("fingerprint"):
3257
value["fingerprint"] = ""
3258
# old_client_settings
3259
# .keys()
3260
old_client_settings = {
3261
(key.decode("utf-8")
3262
if isinstance(key, bytes)
3263
else key): value
3264
for key, value in
3265
bytes_old_client_settings.items()}
3266
del bytes_old_client_settings
3267
# .host
3268
for value in old_client_settings.values():
3269
if isinstance(value["host"], bytes):
3270
value["host"] = (value["host"]
3271
.decode("utf-8"))
2213
clients_data, old_client_settings = (pickle.load
2214
(stored_state))
3272
2215
os.remove(stored_state_path)
3273
2216
except IOError as e:
3274
if e.errno == errno.ENOENT:
3275
logger.warning("Could not load persistent state:"
3276
" {}".format(os.strerror(e.errno)))
3277
else:
3278
logger.critical("Could not load persistent state:",
3279
exc_info=e)
2217
logger.warning("Could not load persistent state: {0}"
2218
.format(e))
2219
if e.errno != errno.ENOENT:
3280
2220
raise
3281
except EOFError as e:
3282
logger.warning("Could not load persistent state: "
3283
"EOFError:",
3284
exc_info=e)
3285
2221
3286
2222
with PGPEngine() as pgp:
3287
for client_name, client in clients_data.items():
3288
# Skip removed clients
3289
if client_name not in client_settings:
3290
continue
3291
2223
for client in clients_data:
2224
client_name = client["name"]
2225
3292
2226
# Decide which value to use after restoring saved state.
3293
2227
# We have three different values: Old config file,
3294
2228
# new config file, and saved state.
3299
2233
# For each value in new config, check if it
3300
2234
# differs from the old config value (Except for
3301
2235
# the "secret" attribute)
3302
if (name != "secret"
3303
and (value !=
3304
old_client_settings[client_name][name])):
3305
client[name] = value
2236
if (name != "secret" and
2237
value != old_client_settings[client_name]
2238
[name]):
2239
setattr(client, name, value)
3306
2240
except KeyError:
3307
2241
pass
3308
2242
3309
2243
# Clients who has passed its expire date can still be
3310
# enabled if its last checker was successful. A Client
3311
# whose checker succeeded before we stored its state is
3312
# assumed to have successfully run all checkers during
3313
# downtime.
2244
# enabled if its last checker was sucessful. Clients
2245
# whose checker failed before we stored its state is
2246
# assumed to have failed all checkers during downtime.
3314
2247
if client["enabled"]:
3315
if datetime.datetime.utcnow() >= client["expires"]:
3316
if not client["last_checked_ok"]:
3317
logger.warning(
3318
"disabling client {} - Client never "
3319
"performed a successful checker".format(
3320
client_name))
3321
client["enabled"] = False
3322
elif client["last_checker_status"] != 0:
3323
logger.warning(
3324
"disabling client {} - Client last"
3325
" checker failed with error code"
3326
" {}".format(
3327
client_name,
3328
client["last_checker_status"]))
2248
if client["expires"] <= (datetime.datetime
2249
.utcnow()):
2250
# Client has expired
2251
if client["last_checker_status"] != 0:
3329
2252
client["enabled"] = False
3330
2253
else:
3331
client["expires"] = (
3332
datetime.datetime.utcnow()
3333
+ client["timeout"])
3334
logger.debug("Last checker succeeded,"
3335
" keeping {} enabled".format(
3336
client_name))
2254
client["expires"] = (datetime.datetime
2255
.utcnow()
2256
+ client["timeout"])
2257
2258
client["changedstate"] = (multiprocessing_manager
2259
.Condition
2260
(multiprocessing_manager
2261
.Lock()))
2262
if use_dbus:
2263
new_client = (ClientDBusTransitional.__new__
2264
(ClientDBusTransitional))
2265
tcp_server.clients[client_name] = new_client
2266
new_client.bus = bus
2267
for name, value in client.iteritems():
2268
setattr(new_client, name, value)
2269
client_object_name = unicode(client_name).translate(
2270
{ord("."): ord("_"),
2271
ord("-"): ord("_")})
2272
new_client.dbus_object_path = (dbus.ObjectPath
2273
("/clients/"
2274
+ client_object_name))
2275
DBusObjectWithProperties.__init__(new_client,
2276
new_client.bus,
2277
new_client
2278
.dbus_object_path)
2279
else:
2280
tcp_server.clients[client_name] = (Client.__new__
2281
(Client))
2282
for name, value in client.iteritems():
2283
setattr(tcp_server.clients[client_name],
2284
name, value)
2285
3337
2286
try:
3338
client["secret"] = pgp.decrypt(
3339
client["encrypted_secret"],
3340
client_settings[client_name]["secret"])
2287
tcp_server.clients[client_name].secret = (
2288
pgp.decrypt(tcp_server.clients[client_name]
2289
.encrypted_secret,
2290
client_settings[client_name]
2291
["secret"]))
3341
2292
except PGPError:
3342
2293
# If decryption fails, we use secret from new settings
3343
logger.debug("Failed to decrypt {} old secret".format(
3344
client_name))
3345
client["secret"] = (client_settings[client_name]
3346
["secret"])
3347
3348
# Add/remove clients based on new changes made to config
3349
for client_name in (set(old_client_settings)
3350
- set(client_settings)):
3351
del clients_data[client_name]
3352
for client_name in (set(client_settings)
3353
- set(old_client_settings)):
3354
clients_data[client_name] = client_settings[client_name]
3355
3356
# Create all client objects
3357
for client_name, client in clients_data.items():
3358
tcp_server.clients[client_name] = client_class(
3359
name=client_name,
3360
settings=client,
3361
server_settings=server_settings)
3362
2294
logger.debug("Failed to decrypt {0} old secret"
2295
.format(client_name))
2296
tcp_server.clients[client_name].secret = (
2297
client_settings[client_name]["secret"])
2298
2299
# Create/remove clients based on new changes made to config
2300
for clientname in set(old_client_settings) - set(client_settings):
2301
del tcp_server.clients[clientname]
2302
for clientname in set(client_settings) - set(old_client_settings):
2303
tcp_server.clients[clientname] = (client_class(name
2304
= clientname,
2305
config =
2306
client_settings
2307
[clientname]))
2308
3363
2309
if not tcp_server.clients:
3364
2310
logger.warning("No clients defined")
3365
3366
if not foreground:
3367
if pidfile is not None:
3368
pid = os.getpid()
3369
try:
3370
with pidfile:
3371
print(pid, file=pidfile)
3372
except IOError:
3373
logger.error("Could not write to file %r with PID %d",
3374
pidfilename, pid)
3375
del pidfile
2311
2312
if not debug:
2313
try:
2314
with pidfile:
2315
pid = os.getpid()
2316
pidfile.write(str(pid) + "\n".encode("utf-8"))
2317
del pidfile
2318
except IOError:
2319
logger.error("Could not write to file %r with PID %d",
2320
pidfilename, pid)
2321
except NameError:
2322
# "pidfile" was never created
2323
pass
3376
2324
del pidfilename
3377
3378
for termsig in (signal.SIGHUP, signal.SIGTERM):
3379
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3380
lambda: main_loop.quit() and False)
3381
2325
2326
signal.signal(signal.SIGINT, signal.SIG_IGN)
2327
2328
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2329
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2330
3382
2331
if use_dbus:
3383
3384
@alternate_dbus_interfaces(
3385
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3386
class MandosDBusService(DBusObjectWithObjectManager):
2332
class MandosDBusService(dbus.service.Object):
3387
2333
"""A D-Bus proxy object"""
3388
3389
2334
def __init__(self):
3390
2335
dbus.service.Object.__init__(self, bus, "/")
3391
3392
2336
_interface = "se.recompile.Mandos"
3393
2337
3394
2338
@dbus.service.signal(_interface, signature="o")
3395
2339
def ClientAdded(self, objpath):
3396
2340
"D-Bus signal"
3397
2341
pass
3398
2342
3399
2343
@dbus.service.signal(_interface, signature="ss")
3400
def ClientNotFound(self, key_id, address):
2344
def ClientNotFound(self, fingerprint, address):
3401
2345
"D-Bus signal"
3402
2346
pass
3403
3404
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3405
"true"})
2347
3406
2348
@dbus.service.signal(_interface, signature="os")
3407
2349
def ClientRemoved(self, objpath, name):
3408
2350
"D-Bus signal"
3409
2351
pass
3410
3411
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3412
"true"})
2352
3413
2353
@dbus.service.method(_interface, out_signature="ao")
3414
2354
def GetAllClients(self):
3415
2355
"D-Bus method"
3416
return dbus.Array(c.dbus_object_path for c in
3417
tcp_server.clients.values())
3418
3419
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3420
"true"})
2356
return dbus.Array(c.dbus_object_path
2357
for c in
2358
tcp_server.clients.itervalues())
2359
3421
2360
@dbus.service.method(_interface,
3422
2361
out_signature="a{oa{sv}}")
3423
2362
def GetAllClientsWithProperties(self):
3424
2363
"D-Bus method"
3425
2364
return dbus.Dictionary(
3426
{c.dbus_object_path: c.GetAll(
3427
"se.recompile.Mandos.Client")
3428
for c in tcp_server.clients.values()},
2365
((c.dbus_object_path, c.GetAll(""))
2366
for c in tcp_server.clients.itervalues()),
3429
2367
signature="oa{sv}")
3430
2368
3431
2369
@dbus.service.method(_interface, in_signature="o")
3432
2370
def RemoveClient(self, object_path):
3433
2371
"D-Bus method"
3434
for c in tcp_server.clients.values():
2372
for c in tcp_server.clients.itervalues():
3435
2373
if c.dbus_object_path == object_path:
3436
2374
del tcp_server.clients[c.name]
3437
2375
c.remove_from_connection()
3438
# Don't signal the disabling
2376
# Don't signal anything except ClientRemoved
3439
2377
c.disable(quiet=True)
3440
# Emit D-Bus signal for removal
3441
self.client_removed_signal(c)
2378
# Emit D-Bus signal
2379
self.ClientRemoved(object_path, c.name)
3442
2380
return
3443
2381
raise KeyError(object_path)
3444
2382
3445
2383
del _interface
3446
3447
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3448
out_signature="a{oa{sa{sv}}}")
3449
def GetManagedObjects(self):
3450
"""D-Bus method"""
3451
return dbus.Dictionary(
3452
{client.dbus_object_path:
3453
dbus.Dictionary(
3454
{interface: client.GetAll(interface)
3455
for interface in
3456
client._get_all_interface_names()})
3457
for client in tcp_server.clients.values()})
3458
3459
def client_added_signal(self, client):
3460
"""Send the new standard signal and the old signal"""
3461
if use_dbus:
3462
# New standard signal
3463
self.InterfacesAdded(
3464
client.dbus_object_path,
3465
dbus.Dictionary(
3466
{interface: client.GetAll(interface)
3467
for interface in
3468
client._get_all_interface_names()}))
3469
# Old signal
3470
self.ClientAdded(client.dbus_object_path)
3471
3472
def client_removed_signal(self, client):
3473
"""Send the new standard signal and the old signal"""
3474
if use_dbus:
3475
# New standard signal
3476
self.InterfacesRemoved(
3477
client.dbus_object_path,
3478
client._get_all_interface_names())
3479
# Old signal
3480
self.ClientRemoved(client.dbus_object_path,
3481
client.name)
3482
3483
mandos_dbus_service = MandosDBusService()
3484
3485
# Save modules to variables to exempt the modules from being
3486
# unloaded before the function registered with atexit() is run.
3487
mp = multiprocessing
3488
wn = wnull
3489
2384
2385
class MandosDBusServiceTransitional(MandosDBusService):
2386
__metaclass__ = AlternateDBusNamesMetaclass
2387
mandos_dbus_service = MandosDBusServiceTransitional()
2388
3490
2389
def cleanup():
3491
2390
"Cleanup function; run on exit"
3492
if zeroconf:
3493
service.cleanup()
3494
3495
mp.active_children()
3496
wn.close()
2391
service.cleanup()
2392
2393
multiprocessing.active_children()
3497
2394
if not (tcp_server.clients or client_settings):
3498
2395
return
3499
2396
3500
2397
# Store client before exiting. Secrets are encrypted with key
3501
2398
# based on what config file has. If config file is
3502
2399
# removed/edited, old secret will thus be unrecovable.
3503
clients = {}
2400
clients = []
3504
2401
with PGPEngine() as pgp:
3505
for client in tcp_server.clients.values():
2402
for client in tcp_server.clients.itervalues():
3506
2403
key = client_settings[client.name]["secret"]
3507
2404
client.encrypted_secret = pgp.encrypt(client.secret,
3508
2405
key)
3509
2406
client_dict = {}
3510
3511
# A list of attributes that can not be pickled
3512
# + secret.
3513
exclude = {"bus", "changedstate", "secret",
3514
"checker", "server_settings"}
3515
for name, typ in inspect.getmembers(dbus.service
3516
.Object):
2407
2408
# A list of attributes that will not be stored when
2409
# shutting down.
2410
exclude = set(("bus", "changedstate", "secret"))
2411
for name, typ in (inspect.getmembers
2412
(dbus.service.Object)):
3517
2413
exclude.add(name)
3518
2414
3519
2415
client_dict["encrypted_secret"] = (client
3520
2416
.encrypted_secret)
3521
2417
for attr in client.client_structure:
3522
2418
if attr not in exclude:
3523
2419
client_dict[attr] = getattr(client, attr)
3524
3525
clients[client.name] = client_dict
2420
2421
clients.append(client_dict)
3526
2422
del client_settings[client.name]["secret"]
3527
2423
3528
2424
try:
3529
with tempfile.NamedTemporaryFile(
3530
mode='wb',
3531
suffix=".pickle",
3532
prefix='clients-',
3533
dir=os.path.dirname(stored_state_path),
3534
delete=False) as stored_state:
3535
pickle.dump((clients, client_settings), stored_state,
3536
protocol=2)
3537
tempname = stored_state.name
3538
os.rename(tempname, stored_state_path)
2425
with os.fdopen(os.open(stored_state_path,
2426
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2427
0600), "wb") as stored_state:
2428
pickle.dump((clients, client_settings), stored_state)
3539
2429
except (IOError, OSError) as e:
3540
if not debug:
3541
try:
3542
os.remove(tempname)
3543
except NameError:
3544
pass
3545
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3546
logger.warning("Could not save persistent state: {}"
3547
.format(os.strerror(e.errno)))
3548
else:
3549
logger.warning("Could not save persistent state:",
3550
exc_info=e)
2430
logger.warning("Could not save persistent state: {0}"
2431
.format(e))
2432
if e.errno not in (errno.ENOENT, errno.EACCES):
3551
2433
raise
3552
2434
3553
2435
# Delete all clients, and settings from config
3554
2436
while tcp_server.clients:
3555
2437
name, client = tcp_server.clients.popitem()
3556
2438
if use_dbus:
3557
2439
client.remove_from_connection()
3558
# Don't signal the disabling
2440
# Don't signal anything except ClientRemoved
3559
2441
client.disable(quiet=True)
3560
# Emit D-Bus signal for removal
3561
2442
if use_dbus:
3562
mandos_dbus_service.client_removed_signal(client)
2443
# Emit D-Bus signal
2444
mandos_dbus_service.ClientRemoved(client
2445
.dbus_object_path,
2446
client.name)
3563
2447
client_settings.clear()
3564
2448
3565
2449
atexit.register(cleanup)
3566
3567
for client in tcp_server.clients.values():
2450
2451
for client in tcp_server.clients.itervalues():
3568
2452
if use_dbus:
3569
# Emit D-Bus signal for adding
3570
mandos_dbus_service.client_added_signal(client)
2453
# Emit D-Bus signal
2454
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3571
2455
# Need to initiate checking of clients
3572
2456
if client.enabled:
3573
2457
client.init_checker()
3574
2458
3575
2459
tcp_server.enable()
3576
2460
tcp_server.server_activate()
3577
2461
3578
2462
# Find out what port we got
3579
if zeroconf:
3580
service.port = tcp_server.socket.getsockname()[1]
2463
service.port = tcp_server.socket.getsockname()[1]
3581
2464
if use_ipv6:
3582
2465
logger.info("Now listening on address %r, port %d,"
3583
" flowinfo %d, scope_id %d",
3584
*tcp_server.socket.getsockname())
2466
" flowinfo %d, scope_id %d"
2467
% tcp_server.socket.getsockname())
3585
2468
else: # IPv4
3586
logger.info("Now listening on address %r, port %d",
3587
*tcp_server.socket.getsockname())
3588
3589
# service.interface = tcp_server.socket.getsockname()[3]
3590
2469
logger.info("Now listening on address %r, port %d"
2470
% tcp_server.socket.getsockname())
2471
2472
#service.interface = tcp_server.socket.getsockname()[3]
2473
3591
2474
try:
3592
if zeroconf:
3593
# From the Avahi example code
3594
try:
3595
service.activate()
3596
except dbus.exceptions.DBusException as error:
3597
logger.critical("D-Bus Exception", exc_info=error)
3598
cleanup()
3599
sys.exit(1)
3600
# End of Avahi example code
3601
3602
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3603
lambda *args, **kwargs:
3604
(tcp_server.handle_request
3605
(*args[2:], **kwargs) or True))
3606
2475
# From the Avahi example code
2476
try:
2477
service.activate()
2478
except dbus.exceptions.DBusException as error:
2479
logger.critical("DBusException: %s", error)
2480
cleanup()
2481
sys.exit(1)
2482
# End of Avahi example code
2483
2484
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2485
lambda *args, **kwargs:
2486
(tcp_server.handle_request
2487
(*args[2:], **kwargs) or True))
2488
3607
2489
logger.debug("Starting main loop")
3608
2490
main_loop.run()
3609
2491
except AvahiError as error:
3610
logger.critical("Avahi Error", exc_info=error)
2492
logger.critical("AvahiError: %s", error)
3611
2493
cleanup()
3612
2494
sys.exit(1)
3613
2495
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0