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- Committer: Teddy Hogeborn
- Date: 2019-08-18 04:14:31 UTC
- mto: This revision was merged to the branch mainline in revision 390.
- Revision ID: teddy@recompile.se-20190818041431-jgt8pizlzjvxalj0
Debian package: Client: Install the systemd sysusers.d file
* debian/mandos-client.dirs (usr/lib/sysusers.d): New.
* debian/mandos-client.dirs (usr/lib/sysusers.d): New.
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
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#
5
#
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6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
import SocketServer as socketserver
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
64
73
import multiprocessing
65
74
import types
66
75
import binascii
67
76
import tempfile
77
import itertools
78
import collections
79
import codecs
68
80
69
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import dbus
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82
import dbus.service
71
import gobject
72
import avahi
83
import gi
84
from gi.repository import GLib
73
85
from dbus.mainloop.glib import DBusGMainLoop
74
86
import ctypes
75
87
import ctypes.util
76
88
import xml.dom.minidom
77
89
import inspect
78
import GnuPGInterface
79
90
91
if sys.version_info.major == 2:
92
__metaclass__ = type
93
94
# Try to find the value of SO_BINDTODEVICE:
80
95
try:
96
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
97
# newer, and it is also the most natural place for it:
81
98
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
82
99
except AttributeError:
83
100
try:
101
# This is where SO_BINDTODEVICE was up to and including Python
102
# 2.6, and also 3.2:
84
103
from IN import SO_BINDTODEVICE
85
104
except ImportError:
86
SO_BINDTODEVICE = None
87
88
89
version = "1.4.1"
90
stored_state_path = "/var/lib/mandos/clients.pickle"
105
# In Python 2.7 it seems to have been removed entirely.
106
# Try running the C preprocessor:
107
try:
108
cc = subprocess.Popen(["cc", "--language=c", "-E",
109
"/dev/stdin"],
110
stdin=subprocess.PIPE,
111
stdout=subprocess.PIPE)
112
stdout = cc.communicate(
113
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
114
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
115
except (OSError, ValueError, IndexError):
116
# No value found
117
SO_BINDTODEVICE = None
118
119
if sys.version_info.major == 2:
120
str = unicode
121
122
if sys.version_info < (3, 2):
123
configparser.Configparser = configparser.SafeConfigParser
124
125
version = "1.8.7"
126
stored_state_file = "clients.pickle"
91
127
92
128
logger = logging.getLogger()
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
129
syslogger = None
96
130
97
131
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
132
if_nametoindex = ctypes.cdll.LoadLibrary(
133
ctypes.util.find_library("c")).if_nametoindex
101
134
except (OSError, AttributeError):
135
102
136
def if_nametoindex(interface):
103
137
"Get an interface index the hard way, i.e. using fcntl()"
104
138
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
139
with contextlib.closing(socket.socket()) as s:
106
140
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
141
struct.pack(b"16s16x", interface))
142
interface_index = struct.unpack("I", ifreq[16:20])[0]
111
143
return interface_index
112
144
113
145
114
def initlogger(level=logging.WARNING):
146
def copy_function(func):
147
"""Make a copy of a function"""
148
if sys.version_info.major == 2:
149
return types.FunctionType(func.func_code,
150
func.func_globals,
151
func.func_name,
152
func.func_defaults,
153
func.func_closure)
154
else:
155
return types.FunctionType(func.__code__,
156
func.__globals__,
157
func.__name__,
158
func.__defaults__,
159
func.__closure__)
160
161
162
def initlogger(debug, level=logging.WARNING):
115
163
"""init logger and add loglevel"""
116
164
165
global syslogger
166
syslogger = (logging.handlers.SysLogHandler(
167
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
168
address="/dev/log"))
117
169
syslogger.setFormatter(logging.Formatter
118
170
('Mandos [%(process)d]: %(levelname)s:'
119
171
' %(message)s'))
120
172
logger.addHandler(syslogger)
121
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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)
173
174
if debug:
175
console = logging.StreamHandler()
176
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
177
' [%(process)d]:'
178
' %(levelname)s:'
179
' %(message)s'))
180
logger.addHandler(console)
128
181
logger.setLevel(level)
129
182
130
183
131
class CryptoError(Exception):
184
class PGPError(Exception):
185
"""Exception if encryption/decryption fails"""
132
186
pass
133
187
134
188
135
class Crypto(object):
189
class PGPEngine:
136
190
"""A simple class for OpenPGP symmetric encryption & decryption"""
191
137
192
def __init__(self):
138
self.gnupg = GnuPGInterface.GnuPG()
139
193
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.gnupg.options.meta_interactive = False
142
self.gnupg.options.homedir = self.tempdir
143
self.gnupg.options.extra_args.extend(['--force-mdc',
144
'--quiet'])
145
194
self.gpg = "gpg"
195
try:
196
output = subprocess.check_output(["gpgconf"])
197
for line in output.splitlines():
198
name, text, path = line.split(b":")
199
if name == "gpg":
200
self.gpg = path
201
break
202
except OSError as e:
203
if e.errno != errno.ENOENT:
204
raise
205
self.gnupgargs = ['--batch',
206
'--homedir', self.tempdir,
207
'--force-mdc',
208
'--quiet']
209
# Only GPG version 1 has the --no-use-agent option.
210
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
211
self.gnupgargs.append("--no-use-agent")
212
146
213
def __enter__(self):
147
214
return self
148
149
def __exit__ (self, exc_type, exc_value, traceback):
215
216
def __exit__(self, exc_type, exc_value, traceback):
150
217
self._cleanup()
151
218
return False
152
219
153
220
def __del__(self):
154
221
self._cleanup()
155
222
156
223
def _cleanup(self):
157
224
if self.tempdir is not None:
158
225
# Delete contents of tempdir
159
226
for root, dirs, files in os.walk(self.tempdir,
160
topdown = False):
227
topdown=False):
161
228
for filename in files:
162
229
os.remove(os.path.join(root, filename))
163
230
for dirname in dirs:
165
232
# Remove tempdir
166
233
os.rmdir(self.tempdir)
167
234
self.tempdir = None
168
235
169
236
def password_encode(self, password):
170
237
# Passphrase can not be empty and can not contain newlines or
171
238
# NUL bytes. So we prefix it and hex encode it.
172
return b"mandos" + binascii.hexlify(password)
173
239
encoded = b"mandos" + binascii.hexlify(password)
240
if len(encoded) > 2048:
241
# GnuPG can't handle long passwords, so encode differently
242
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
243
.replace(b"\n", b"\\n")
244
.replace(b"\0", b"\\x00"))
245
return encoded
246
174
247
def encrypt(self, data, password):
175
self.gnupg.passphrase = self.password_encode(password)
176
with open(os.devnull) as devnull:
177
try:
178
proc = self.gnupg.run(['--symmetric'],
179
create_fhs=['stdin', 'stdout'],
180
attach_fhs={'stderr': devnull})
181
with contextlib.closing(proc.handles['stdin']) as f:
182
f.write(data)
183
with contextlib.closing(proc.handles['stdout']) as f:
184
ciphertext = f.read()
185
proc.wait()
186
except IOError as e:
187
raise CryptoError(e)
188
self.gnupg.passphrase = None
248
passphrase = self.password_encode(password)
249
with tempfile.NamedTemporaryFile(
250
dir=self.tempdir) as passfile:
251
passfile.write(passphrase)
252
passfile.flush()
253
proc = subprocess.Popen([self.gpg, '--symmetric',
254
'--passphrase-file',
255
passfile.name]
256
+ self.gnupgargs,
257
stdin=subprocess.PIPE,
258
stdout=subprocess.PIPE,
259
stderr=subprocess.PIPE)
260
ciphertext, err = proc.communicate(input=data)
261
if proc.returncode != 0:
262
raise PGPError(err)
189
263
return ciphertext
190
264
191
265
def decrypt(self, data, password):
192
self.gnupg.passphrase = self.password_encode(password)
193
with open(os.devnull) as devnull:
194
try:
195
proc = self.gnupg.run(['--decrypt'],
196
create_fhs=['stdin', 'stdout'],
197
attach_fhs={'stderr': devnull})
198
with contextlib.closing(proc.handles['stdin'] ) as f:
199
f.write(data)
200
with contextlib.closing(proc.handles['stdout']) as f:
201
decrypted_plaintext = f.read()
202
proc.wait()
203
except IOError as e:
204
raise CryptoError(e)
205
self.gnupg.passphrase = None
266
passphrase = self.password_encode(password)
267
with tempfile.NamedTemporaryFile(
268
dir=self.tempdir) as passfile:
269
passfile.write(passphrase)
270
passfile.flush()
271
proc = subprocess.Popen([self.gpg, '--decrypt',
272
'--passphrase-file',
273
passfile.name]
274
+ self.gnupgargs,
275
stdin=subprocess.PIPE,
276
stdout=subprocess.PIPE,
277
stderr=subprocess.PIPE)
278
decrypted_plaintext, err = proc.communicate(input=data)
279
if proc.returncode != 0:
280
raise PGPError(err)
206
281
return decrypted_plaintext
207
282
208
283
284
# Pretend that we have an Avahi module
285
class avahi:
286
"""This isn't so much a class as it is a module-like namespace."""
287
IF_UNSPEC = -1 # avahi-common/address.h
288
PROTO_UNSPEC = -1 # avahi-common/address.h
289
PROTO_INET = 0 # avahi-common/address.h
290
PROTO_INET6 = 1 # avahi-common/address.h
291
DBUS_NAME = "org.freedesktop.Avahi"
292
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
293
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
294
DBUS_PATH_SERVER = "/"
295
296
@staticmethod
297
def string_array_to_txt_array(t):
298
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
299
for s in t), signature="ay")
300
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
301
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
302
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
303
SERVER_INVALID = 0 # avahi-common/defs.h
304
SERVER_REGISTERING = 1 # avahi-common/defs.h
305
SERVER_RUNNING = 2 # avahi-common/defs.h
306
SERVER_COLLISION = 3 # avahi-common/defs.h
307
SERVER_FAILURE = 4 # avahi-common/defs.h
308
209
309
210
310
class AvahiError(Exception):
211
311
def __init__(self, value, *args, **kwargs):
212
312
self.value = value
213
super(AvahiError, self).__init__(value, *args, **kwargs)
214
def __unicode__(self):
215
return unicode(repr(self.value))
313
return super(AvahiError, self).__init__(value, *args,
314
**kwargs)
315
216
316
217
317
class AvahiServiceError(AvahiError):
218
318
pass
219
319
320
220
321
class AvahiGroupError(AvahiError):
221
322
pass
222
323
223
324
224
class AvahiService(object):
325
class AvahiService:
225
326
"""An Avahi (Zeroconf) service.
226
327
227
328
Attributes:
228
329
interface: integer; avahi.IF_UNSPEC or an interface index.
229
330
Used to optionally bind to the specified interface.
230
331
name: string; Example: 'Mandos'
231
332
type: string; Example: '_mandos._tcp'.
232
See <http://www.dns-sd.org/ServiceTypes.html>
333
See <https://www.iana.org/assignments/service-names-port-numbers>
233
334
port: integer; what port to announce
234
335
TXT: list of strings; TXT record for the service
235
336
domain: string; Domain to publish on, default to .local if empty.
241
342
server: D-Bus Server
242
343
bus: dbus.SystemBus()
243
344
"""
244
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
245
servicetype = None, port = None, TXT = None,
246
domain = "", host = "", max_renames = 32768,
247
protocol = avahi.PROTO_UNSPEC, bus = None):
345
346
def __init__(self,
347
interface=avahi.IF_UNSPEC,
348
name=None,
349
servicetype=None,
350
port=None,
351
TXT=None,
352
domain="",
353
host="",
354
max_renames=32768,
355
protocol=avahi.PROTO_UNSPEC,
356
bus=None):
248
357
self.interface = interface
249
358
self.name = name
250
359
self.type = servicetype
259
368
self.server = None
260
369
self.bus = bus
261
370
self.entry_group_state_changed_match = None
262
def rename(self):
371
372
def rename(self, remove=True):
263
373
"""Derived from the Avahi example code"""
264
374
if self.rename_count >= self.max_renames:
265
375
logger.critical("No suitable Zeroconf service name found"
266
376
" after %i retries, exiting.",
267
377
self.rename_count)
268
378
raise AvahiServiceError("Too many renames")
269
self.name = unicode(self.server
270
.GetAlternativeServiceName(self.name))
379
self.name = str(
380
self.server.GetAlternativeServiceName(self.name))
381
self.rename_count += 1
271
382
logger.info("Changing Zeroconf service name to %r ...",
272
383
self.name)
273
self.remove()
384
if remove:
385
self.remove()
274
386
try:
275
387
self.add()
276
388
except dbus.exceptions.DBusException as error:
277
logger.critical("DBusException: %s", error)
278
self.cleanup()
279
os._exit(1)
280
self.rename_count += 1
389
if (error.get_dbus_name()
390
== "org.freedesktop.Avahi.CollisionError"):
391
logger.info("Local Zeroconf service name collision.")
392
return self.rename(remove=False)
393
else:
394
logger.critical("D-Bus Exception", exc_info=error)
395
self.cleanup()
396
os._exit(1)
397
281
398
def remove(self):
282
399
"""Derived from the Avahi example code"""
283
400
if self.entry_group_state_changed_match is not None:
285
402
self.entry_group_state_changed_match = None
286
403
if self.group is not None:
287
404
self.group.Reset()
405
288
406
def add(self):
289
407
"""Derived from the Avahi example code"""
290
408
self.remove()
307
425
dbus.UInt16(self.port),
308
426
avahi.string_array_to_txt_array(self.TXT))
309
427
self.group.Commit()
428
310
429
def entry_group_state_changed(self, state, error):
311
430
"""Derived from the Avahi example code"""
312
431
logger.debug("Avahi entry group state change: %i", state)
313
432
314
433
if state == avahi.ENTRY_GROUP_ESTABLISHED:
315
434
logger.debug("Zeroconf service established.")
316
435
elif state == avahi.ENTRY_GROUP_COLLISION:
318
437
self.rename()
319
438
elif state == avahi.ENTRY_GROUP_FAILURE:
320
439
logger.critical("Avahi: Error in group state changed %s",
321
unicode(error))
322
raise AvahiGroupError("State changed: %s"
323
% unicode(error))
440
str(error))
441
raise AvahiGroupError("State changed: {!s}".format(error))
442
324
443
def cleanup(self):
325
444
"""Derived from the Avahi example code"""
326
445
if self.group is not None:
331
450
pass
332
451
self.group = None
333
452
self.remove()
453
334
454
def server_state_changed(self, state, error=None):
335
455
"""Derived from the Avahi example code"""
336
456
logger.debug("Avahi server state change: %i", state)
337
bad_states = { avahi.SERVER_INVALID:
338
"Zeroconf server invalid",
339
avahi.SERVER_REGISTERING: None,
340
avahi.SERVER_COLLISION:
341
"Zeroconf server name collision",
342
avahi.SERVER_FAILURE:
343
"Zeroconf server failure" }
457
bad_states = {
458
avahi.SERVER_INVALID: "Zeroconf server invalid",
459
avahi.SERVER_REGISTERING: None,
460
avahi.SERVER_COLLISION: "Zeroconf server name collision",
461
avahi.SERVER_FAILURE: "Zeroconf server failure",
462
}
344
463
if state in bad_states:
345
464
if bad_states[state] is not None:
346
465
if error is None:
349
468
logger.error(bad_states[state] + ": %r", error)
350
469
self.cleanup()
351
470
elif state == avahi.SERVER_RUNNING:
352
self.add()
471
try:
472
self.add()
473
except dbus.exceptions.DBusException as error:
474
if (error.get_dbus_name()
475
== "org.freedesktop.Avahi.CollisionError"):
476
logger.info("Local Zeroconf service name"
477
" collision.")
478
return self.rename(remove=False)
479
else:
480
logger.critical("D-Bus Exception", exc_info=error)
481
self.cleanup()
482
os._exit(1)
353
483
else:
354
484
if error is None:
355
485
logger.debug("Unknown state: %r", state)
356
486
else:
357
487
logger.debug("Unknown state: %r: %r", state, error)
488
358
489
def activate(self):
359
490
"""Derived from the Avahi example code"""
360
491
if self.server is None:
364
495
follow_name_owner_changes=True),
365
496
avahi.DBUS_INTERFACE_SERVER)
366
497
self.server.connect_to_signal("StateChanged",
367
self.server_state_changed)
498
self.server_state_changed)
368
499
self.server_state_changed(self.server.GetState())
369
500
501
370
502
class AvahiServiceToSyslog(AvahiService):
371
def rename(self):
503
def rename(self, *args, **kwargs):
372
504
"""Add the new name to the syslog messages"""
373
ret = AvahiService.rename(self)
374
syslogger.setFormatter(logging.Formatter
375
('Mandos (%s) [%%(process)d]:'
376
' %%(levelname)s: %%(message)s'
377
% self.name))
505
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
506
syslogger.setFormatter(logging.Formatter(
507
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
508
.format(self.name)))
378
509
return ret
379
510
380
def _timedelta_to_milliseconds(td):
381
"Convert a datetime.timedelta() to milliseconds"
382
return ((td.days * 24 * 60 * 60 * 1000)
383
+ (td.seconds * 1000)
384
+ (td.microseconds // 1000))
385
386
class Client(object):
511
512
# Pretend that we have a GnuTLS module
513
class gnutls:
514
"""This isn't so much a class as it is a module-like namespace."""
515
516
library = ctypes.util.find_library("gnutls")
517
if library is None:
518
library = ctypes.util.find_library("gnutls-deb0")
519
_library = ctypes.cdll.LoadLibrary(library)
520
del library
521
522
# Unless otherwise indicated, the constants and types below are
523
# all from the gnutls/gnutls.h C header file.
524
525
# Constants
526
E_SUCCESS = 0
527
E_INTERRUPTED = -52
528
E_AGAIN = -28
529
CRT_OPENPGP = 2
530
CRT_RAWPK = 3
531
CLIENT = 2
532
SHUT_RDWR = 0
533
CRD_CERTIFICATE = 1
534
E_NO_CERTIFICATE_FOUND = -49
535
X509_FMT_DER = 0
536
NO_TICKETS = 1<<10
537
ENABLE_RAWPK = 1<<18
538
CTYPE_PEERS = 3
539
KEYID_USE_SHA256 = 1 # gnutls/x509.h
540
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
541
542
# Types
543
class session_int(ctypes.Structure):
544
_fields_ = []
545
session_t = ctypes.POINTER(session_int)
546
547
class certificate_credentials_st(ctypes.Structure):
548
_fields_ = []
549
certificate_credentials_t = ctypes.POINTER(
550
certificate_credentials_st)
551
certificate_type_t = ctypes.c_int
552
553
class datum_t(ctypes.Structure):
554
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
555
('size', ctypes.c_uint)]
556
557
class openpgp_crt_int(ctypes.Structure):
558
_fields_ = []
559
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
560
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
561
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
562
credentials_type_t = ctypes.c_int
563
transport_ptr_t = ctypes.c_void_p
564
close_request_t = ctypes.c_int
565
566
# Exceptions
567
class Error(Exception):
568
def __init__(self, message=None, code=None, args=()):
569
# Default usage is by a message string, but if a return
570
# code is passed, convert it to a string with
571
# gnutls.strerror()
572
self.code = code
573
if message is None and code is not None:
574
message = gnutls.strerror(code)
575
return super(gnutls.Error, self).__init__(
576
message, *args)
577
578
class CertificateSecurityError(Error):
579
pass
580
581
# Classes
582
class Credentials:
583
def __init__(self):
584
self._c_object = gnutls.certificate_credentials_t()
585
gnutls.certificate_allocate_credentials(
586
ctypes.byref(self._c_object))
587
self.type = gnutls.CRD_CERTIFICATE
588
589
def __del__(self):
590
gnutls.certificate_free_credentials(self._c_object)
591
592
class ClientSession:
593
def __init__(self, socket, credentials=None):
594
self._c_object = gnutls.session_t()
595
gnutls_flags = gnutls.CLIENT
596
if gnutls.check_version(b"3.5.6"):
597
gnutls_flags |= gnutls.NO_TICKETS
598
if gnutls.has_rawpk:
599
gnutls_flags |= gnutls.ENABLE_RAWPK
600
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
601
del gnutls_flags
602
gnutls.set_default_priority(self._c_object)
603
gnutls.transport_set_ptr(self._c_object, socket.fileno())
604
gnutls.handshake_set_private_extensions(self._c_object,
605
True)
606
self.socket = socket
607
if credentials is None:
608
credentials = gnutls.Credentials()
609
gnutls.credentials_set(self._c_object, credentials.type,
610
ctypes.cast(credentials._c_object,
611
ctypes.c_void_p))
612
self.credentials = credentials
613
614
def __del__(self):
615
gnutls.deinit(self._c_object)
616
617
def handshake(self):
618
return gnutls.handshake(self._c_object)
619
620
def send(self, data):
621
data = bytes(data)
622
data_len = len(data)
623
while data_len > 0:
624
data_len -= gnutls.record_send(self._c_object,
625
data[-data_len:],
626
data_len)
627
628
def bye(self):
629
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
630
631
# Error handling functions
632
def _error_code(result):
633
"""A function to raise exceptions on errors, suitable
634
for the 'restype' attribute on ctypes functions"""
635
if result >= 0:
636
return result
637
if result == gnutls.E_NO_CERTIFICATE_FOUND:
638
raise gnutls.CertificateSecurityError(code=result)
639
raise gnutls.Error(code=result)
640
641
def _retry_on_error(result, func, arguments):
642
"""A function to retry on some errors, suitable
643
for the 'errcheck' attribute on ctypes functions"""
644
while result < 0:
645
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
646
return _error_code(result)
647
result = func(*arguments)
648
return result
649
650
# Unless otherwise indicated, the function declarations below are
651
# all from the gnutls/gnutls.h C header file.
652
653
# Functions
654
priority_set_direct = _library.gnutls_priority_set_direct
655
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
656
ctypes.POINTER(ctypes.c_char_p)]
657
priority_set_direct.restype = _error_code
658
659
init = _library.gnutls_init
660
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
661
init.restype = _error_code
662
663
set_default_priority = _library.gnutls_set_default_priority
664
set_default_priority.argtypes = [session_t]
665
set_default_priority.restype = _error_code
666
667
record_send = _library.gnutls_record_send
668
record_send.argtypes = [session_t, ctypes.c_void_p,
669
ctypes.c_size_t]
670
record_send.restype = ctypes.c_ssize_t
671
record_send.errcheck = _retry_on_error
672
673
certificate_allocate_credentials = (
674
_library.gnutls_certificate_allocate_credentials)
675
certificate_allocate_credentials.argtypes = [
676
ctypes.POINTER(certificate_credentials_t)]
677
certificate_allocate_credentials.restype = _error_code
678
679
certificate_free_credentials = (
680
_library.gnutls_certificate_free_credentials)
681
certificate_free_credentials.argtypes = [
682
certificate_credentials_t]
683
certificate_free_credentials.restype = None
684
685
handshake_set_private_extensions = (
686
_library.gnutls_handshake_set_private_extensions)
687
handshake_set_private_extensions.argtypes = [session_t,
688
ctypes.c_int]
689
handshake_set_private_extensions.restype = None
690
691
credentials_set = _library.gnutls_credentials_set
692
credentials_set.argtypes = [session_t, credentials_type_t,
693
ctypes.c_void_p]
694
credentials_set.restype = _error_code
695
696
strerror = _library.gnutls_strerror
697
strerror.argtypes = [ctypes.c_int]
698
strerror.restype = ctypes.c_char_p
699
700
certificate_type_get = _library.gnutls_certificate_type_get
701
certificate_type_get.argtypes = [session_t]
702
certificate_type_get.restype = _error_code
703
704
certificate_get_peers = _library.gnutls_certificate_get_peers
705
certificate_get_peers.argtypes = [session_t,
706
ctypes.POINTER(ctypes.c_uint)]
707
certificate_get_peers.restype = ctypes.POINTER(datum_t)
708
709
global_set_log_level = _library.gnutls_global_set_log_level
710
global_set_log_level.argtypes = [ctypes.c_int]
711
global_set_log_level.restype = None
712
713
global_set_log_function = _library.gnutls_global_set_log_function
714
global_set_log_function.argtypes = [log_func]
715
global_set_log_function.restype = None
716
717
deinit = _library.gnutls_deinit
718
deinit.argtypes = [session_t]
719
deinit.restype = None
720
721
handshake = _library.gnutls_handshake
722
handshake.argtypes = [session_t]
723
handshake.restype = _error_code
724
handshake.errcheck = _retry_on_error
725
726
transport_set_ptr = _library.gnutls_transport_set_ptr
727
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
728
transport_set_ptr.restype = None
729
730
bye = _library.gnutls_bye
731
bye.argtypes = [session_t, close_request_t]
732
bye.restype = _error_code
733
bye.errcheck = _retry_on_error
734
735
check_version = _library.gnutls_check_version
736
check_version.argtypes = [ctypes.c_char_p]
737
check_version.restype = ctypes.c_char_p
738
739
_need_version = b"3.3.0"
740
if check_version(_need_version) is None:
741
raise self.Error("Needs GnuTLS {} or later"
742
.format(_need_version))
743
744
_tls_rawpk_version = b"3.6.6"
745
has_rawpk = bool(check_version(_tls_rawpk_version))
746
747
if has_rawpk:
748
# Types
749
class pubkey_st(ctypes.Structure):
750
_fields = []
751
pubkey_t = ctypes.POINTER(pubkey_st)
752
753
x509_crt_fmt_t = ctypes.c_int
754
755
# All the function declarations below are from gnutls/abstract.h
756
pubkey_init = _library.gnutls_pubkey_init
757
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
758
pubkey_init.restype = _error_code
759
760
pubkey_import = _library.gnutls_pubkey_import
761
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
762
x509_crt_fmt_t]
763
pubkey_import.restype = _error_code
764
765
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
766
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
767
ctypes.POINTER(ctypes.c_ubyte),
768
ctypes.POINTER(ctypes.c_size_t)]
769
pubkey_get_key_id.restype = _error_code
770
771
pubkey_deinit = _library.gnutls_pubkey_deinit
772
pubkey_deinit.argtypes = [pubkey_t]
773
pubkey_deinit.restype = None
774
else:
775
# All the function declarations below are from gnutls/openpgp.h
776
777
openpgp_crt_init = _library.gnutls_openpgp_crt_init
778
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
779
openpgp_crt_init.restype = _error_code
780
781
openpgp_crt_import = _library.gnutls_openpgp_crt_import
782
openpgp_crt_import.argtypes = [openpgp_crt_t,
783
ctypes.POINTER(datum_t),
784
openpgp_crt_fmt_t]
785
openpgp_crt_import.restype = _error_code
786
787
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
788
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
789
ctypes.POINTER(ctypes.c_uint)]
790
openpgp_crt_verify_self.restype = _error_code
791
792
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
793
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
794
openpgp_crt_deinit.restype = None
795
796
openpgp_crt_get_fingerprint = (
797
_library.gnutls_openpgp_crt_get_fingerprint)
798
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
799
ctypes.c_void_p,
800
ctypes.POINTER(
801
ctypes.c_size_t)]
802
openpgp_crt_get_fingerprint.restype = _error_code
803
804
if check_version(b"3.6.4"):
805
certificate_type_get2 = _library.gnutls_certificate_type_get2
806
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
807
certificate_type_get2.restype = _error_code
808
809
# Remove non-public functions
810
del _error_code, _retry_on_error
811
812
813
def call_pipe(connection, # : multiprocessing.Connection
814
func, *args, **kwargs):
815
"""This function is meant to be called by multiprocessing.Process
816
817
This function runs func(*args, **kwargs), and writes the resulting
818
return value on the provided multiprocessing.Connection.
819
"""
820
connection.send(func(*args, **kwargs))
821
connection.close()
822
823
824
class Client:
387
825
"""A representation of a client host served by this server.
388
826
389
827
Attributes:
390
_approved: bool(); 'None' if not yet approved/disapproved
828
approved: bool(); 'None' if not yet approved/disapproved
391
829
approval_delay: datetime.timedelta(); Time to wait for approval
392
830
approval_duration: datetime.timedelta(); Duration of one approval
393
checker: subprocess.Popen(); a running checker process used
394
to see if the client lives.
395
'None' if no process is running.
396
checker_callback_tag: a gobject event source tag, or None
831
checker: multiprocessing.Process(); a running checker process used
832
to see if the client lives. 'None' if no process is
833
running.
834
checker_callback_tag: a GLib event source tag, or None
397
835
checker_command: string; External command which is run to check
398
836
if client lives. %() expansions are done at
399
837
runtime with vars(self) as dict, so that for
400
838
instance %(name)s can be used in the command.
401
checker_initiator_tag: a gobject event source tag, or None
839
checker_initiator_tag: a GLib event source tag, or None
402
840
created: datetime.datetime(); (UTC) object creation
403
841
client_structure: Object describing what attributes a client has
404
842
and is used for storing the client at exit
405
843
current_checker_command: string; current running checker_command
406
disable_initiator_tag: a gobject event source tag, or None
844
disable_initiator_tag: a GLib event source tag, or None
407
845
enabled: bool()
408
846
fingerprint: string (40 or 32 hexadecimal digits); used to
409
uniquely identify the client
847
uniquely identify an OpenPGP client
848
key_id: string (64 hexadecimal digits); used to uniquely identify
849
a client using raw public keys
410
850
host: string; available for use by the checker command
411
851
interval: datetime.timedelta(); How often to start a new checker
412
852
last_approval_request: datetime.datetime(); (UTC) or None
413
853
last_checked_ok: datetime.datetime(); (UTC) or None
414
415
854
last_checker_status: integer between 0 and 255 reflecting exit
416
855
status of last checker. -1 reflects crashed
417
checker, or None.
418
last_enabled: datetime.datetime(); (UTC)
856
checker, -2 means no checker completed yet.
857
last_checker_signal: The signal which killed the last checker, if
858
last_checker_status is -1
859
last_enabled: datetime.datetime(); (UTC) or None
419
860
name: string; from the config file, used in log messages and
420
861
D-Bus identifiers
421
862
secret: bytestring; sent verbatim (over TLS) to client
422
863
timeout: datetime.timedelta(); How long from last_checked_ok
423
864
until this client is disabled
424
extended_timeout: extra long timeout when password has been sent
865
extended_timeout: extra long timeout when secret has been sent
425
866
runtime_expansions: Allowed attributes for runtime expansion.
426
867
expires: datetime.datetime(); time (UTC) when a client will be
427
868
disabled, or None
869
server_settings: The server_settings dict from main()
428
870
"""
429
871
430
872
runtime_expansions = ("approval_delay", "approval_duration",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
873
"created", "enabled", "expires", "key_id",
874
"fingerprint", "host", "interval",
875
"last_approval_request", "last_checked_ok",
433
876
"last_enabled", "name", "timeout")
434
435
def timeout_milliseconds(self):
436
"Return the 'timeout' attribute in milliseconds"
437
return _timedelta_to_milliseconds(self.timeout)
438
439
def extended_timeout_milliseconds(self):
440
"Return the 'extended_timeout' attribute in milliseconds"
441
return _timedelta_to_milliseconds(self.extended_timeout)
442
443
def interval_milliseconds(self):
444
"Return the 'interval' attribute in milliseconds"
445
return _timedelta_to_milliseconds(self.interval)
446
447
def approval_delay_milliseconds(self):
448
return _timedelta_to_milliseconds(self.approval_delay)
449
450
def __init__(self, name = None, config=None):
451
"""Note: the 'checker' key in 'config' sets the
452
'checker_command' attribute and *not* the 'checker'
453
attribute."""
877
client_defaults = {
878
"timeout": "PT5M",
879
"extended_timeout": "PT15M",
880
"interval": "PT2M",
881
"checker": "fping -q -- %%(host)s",
882
"host": "",
883
"approval_delay": "PT0S",
884
"approval_duration": "PT1S",
885
"approved_by_default": "True",
886
"enabled": "True",
887
}
888
889
@staticmethod
890
def config_parser(config):
891
"""Construct a new dict of client settings of this form:
892
{ client_name: {setting_name: value, ...}, ...}
893
with exceptions for any special settings as defined above.
894
NOTE: Must be a pure function. Must return the same result
895
value given the same arguments.
896
"""
897
settings = {}
898
for client_name in config.sections():
899
section = dict(config.items(client_name))
900
client = settings[client_name] = {}
901
902
client["host"] = section["host"]
903
# Reformat values from string types to Python types
904
client["approved_by_default"] = config.getboolean(
905
client_name, "approved_by_default")
906
client["enabled"] = config.getboolean(client_name,
907
"enabled")
908
909
# Uppercase and remove spaces from key_id and fingerprint
910
# for later comparison purposes with return value from the
911
# key_id() and fingerprint() functions
912
client["key_id"] = (section.get("key_id", "").upper()
913
.replace(" ", ""))
914
client["fingerprint"] = (section["fingerprint"].upper()
915
.replace(" ", ""))
916
if "secret" in section:
917
client["secret"] = codecs.decode(section["secret"]
918
.encode("utf-8"),
919
"base64")
920
elif "secfile" in section:
921
with open(os.path.expanduser(os.path.expandvars
922
(section["secfile"])),
923
"rb") as secfile:
924
client["secret"] = secfile.read()
925
else:
926
raise TypeError("No secret or secfile for section {}"
927
.format(section))
928
client["timeout"] = string_to_delta(section["timeout"])
929
client["extended_timeout"] = string_to_delta(
930
section["extended_timeout"])
931
client["interval"] = string_to_delta(section["interval"])
932
client["approval_delay"] = string_to_delta(
933
section["approval_delay"])
934
client["approval_duration"] = string_to_delta(
935
section["approval_duration"])
936
client["checker_command"] = section["checker"]
937
client["last_approval_request"] = None
938
client["last_checked_ok"] = None
939
client["last_checker_status"] = -2
940
941
return settings
942
943
def __init__(self, settings, name=None, server_settings=None):
454
944
self.name = name
455
if config is None:
456
config = {}
945
if server_settings is None:
946
server_settings = {}
947
self.server_settings = server_settings
948
# adding all client settings
949
for setting, value in settings.items():
950
setattr(self, setting, value)
951
952
if self.enabled:
953
if not hasattr(self, "last_enabled"):
954
self.last_enabled = datetime.datetime.utcnow()
955
if not hasattr(self, "expires"):
956
self.expires = (datetime.datetime.utcnow()
957
+ self.timeout)
958
else:
959
self.last_enabled = None
960
self.expires = None
961
457
962
logger.debug("Creating client %r", self.name)
458
# Uppercase and remove spaces from fingerprint for later
459
# comparison purposes with return value from the fingerprint()
460
# function
461
self.fingerprint = (config["fingerprint"].upper()
462
.replace(" ", ""))
963
logger.debug(" Key ID: %s", self.key_id)
463
964
logger.debug(" Fingerprint: %s", self.fingerprint)
464
if "secret" in config:
465
self.secret = config["secret"].decode("base64")
466
elif "secfile" in config:
467
with open(os.path.expanduser(os.path.expandvars
468
(config["secfile"])),
469
"rb") as secfile:
470
self.secret = secfile.read()
471
else:
472
raise TypeError("No secret or secfile for client %s"
473
% self.name)
474
self.host = config.get("host", "")
475
self.created = datetime.datetime.utcnow()
476
self.enabled = True
477
self.last_approval_request = None
478
self.last_enabled = datetime.datetime.utcnow()
479
self.last_checked_ok = None
480
self.last_checker_status = None
481
self.timeout = string_to_delta(config["timeout"])
482
self.extended_timeout = string_to_delta(config
483
["extended_timeout"])
484
self.interval = string_to_delta(config["interval"])
965
self.created = settings.get("created",
966
datetime.datetime.utcnow())
967
968
# attributes specific for this server instance
485
969
self.checker = None
486
970
self.checker_initiator_tag = None
487
971
self.disable_initiator_tag = None
488
self.expires = datetime.datetime.utcnow() + self.timeout
489
972
self.checker_callback_tag = None
490
self.checker_command = config["checker"]
491
973
self.current_checker_command = None
492
self._approved = None
493
self.approved_by_default = config.get("approved_by_default",
494
True)
974
self.approved = None
495
975
self.approvals_pending = 0
496
self.approval_delay = string_to_delta(
497
config["approval_delay"])
498
self.approval_duration = string_to_delta(
499
config["approval_duration"])
500
self.changedstate = (multiprocessing_manager
501
.Condition(multiprocessing_manager
502
.Lock()))
503
self.client_structure = [attr for attr in
504
self.__dict__.iterkeys()
976
self.changedstate = multiprocessing_manager.Condition(
977
multiprocessing_manager.Lock())
978
self.client_structure = [attr
979
for attr in self.__dict__.keys()
505
980
if not attr.startswith("_")]
506
981
self.client_structure.append("client_structure")
507
508
for name, t in inspect.getmembers(type(self),
509
lambda obj:
510
isinstance(obj,
511
property)):
982
983
for name, t in inspect.getmembers(
984
type(self), lambda obj: isinstance(obj, property)):
512
985
if not name.startswith("_"):
513
986
self.client_structure.append(name)
514
987
515
988
# Send notice to process children that client state has changed
516
989
def send_changedstate(self):
517
990
with self.changedstate:
518
991
self.changedstate.notify_all()
519
992
520
993
def enable(self):
521
994
"""Start this client's checker and timeout hooks"""
522
995
if getattr(self, "enabled", False):
523
996
# Already enabled
524
997
return
525
self.send_changedstate()
526
998
self.expires = datetime.datetime.utcnow() + self.timeout
527
999
self.enabled = True
528
1000
self.last_enabled = datetime.datetime.utcnow()
529
1001
self.init_checker()
530
1002
self.send_changedstate()
1003
531
1004
def disable(self, quiet=True):
532
1005
"""Disable this client."""
533
1006
if not getattr(self, "enabled", False):
534
1007
return False
535
1008
if not quiet:
536
self.send_changedstate()
537
if not quiet:
538
1009
logger.info("Disabling client %s", self.name)
539
if getattr(self, "disable_initiator_tag", False):
540
gobject.source_remove(self.disable_initiator_tag)
1010
if getattr(self, "disable_initiator_tag", None) is not None:
1011
GLib.source_remove(self.disable_initiator_tag)
541
1012
self.disable_initiator_tag = None
542
1013
self.expires = None
543
if getattr(self, "checker_initiator_tag", False):
544
gobject.source_remove(self.checker_initiator_tag)
1014
if getattr(self, "checker_initiator_tag", None) is not None:
1015
GLib.source_remove(self.checker_initiator_tag)
545
1016
self.checker_initiator_tag = None
546
1017
self.stop_checker()
547
1018
self.enabled = False
548
# Do not run this again if called by a gobject.timeout_add
1019
if not quiet:
1020
self.send_changedstate()
1021
# Do not run this again if called by a GLib.timeout_add
549
1022
return False
550
1023
551
1024
def __del__(self):
552
1025
self.disable()
553
1026
554
1027
def init_checker(self):
555
1028
# Schedule a new checker to be started an 'interval' from now,
556
1029
# and every interval from then on.
557
self.checker_initiator_tag = (gobject.timeout_add
558
(self.interval_milliseconds(),
559
self.start_checker))
1030
if self.checker_initiator_tag is not None:
1031
GLib.source_remove(self.checker_initiator_tag)
1032
self.checker_initiator_tag = GLib.timeout_add(
1033
int(self.interval.total_seconds() * 1000),
1034
self.start_checker)
560
1035
# Schedule a disable() when 'timeout' has passed
561
self.disable_initiator_tag = (gobject.timeout_add
562
(self.timeout_milliseconds(),
563
self.disable))
1036
if self.disable_initiator_tag is not None:
1037
GLib.source_remove(self.disable_initiator_tag)
1038
self.disable_initiator_tag = GLib.timeout_add(
1039
int(self.timeout.total_seconds() * 1000), self.disable)
564
1040
# Also start a new checker *right now*.
565
1041
self.start_checker()
566
567
def checker_callback(self, pid, condition, command):
1042
1043
def checker_callback(self, source, condition, connection,
1044
command):
568
1045
"""The checker has completed, so take appropriate actions."""
1046
# Read return code from connection (see call_pipe)
1047
returncode = connection.recv()
1048
connection.close()
1049
self.checker.join()
569
1050
self.checker_callback_tag = None
570
1051
self.checker = None
571
if os.WIFEXITED(condition):
572
self.last_checker_status = os.WEXITSTATUS(condition)
1052
1053
if returncode >= 0:
1054
self.last_checker_status = returncode
1055
self.last_checker_signal = None
573
1056
if self.last_checker_status == 0:
574
1057
logger.info("Checker for %(name)s succeeded",
575
1058
vars(self))
576
1059
self.checked_ok()
577
1060
else:
578
logger.info("Checker for %(name)s failed",
579
vars(self))
1061
logger.info("Checker for %(name)s failed", vars(self))
580
1062
else:
581
1063
self.last_checker_status = -1
1064
self.last_checker_signal = -returncode
582
1065
logger.warning("Checker for %(name)s crashed?",
583
1066
vars(self))
584
585
def checked_ok(self, timeout=None):
586
"""Bump up the timeout for this client.
587
588
This should only be called when the client has been seen,
589
alive and well.
590
"""
1067
return False
1068
1069
def checked_ok(self):
1070
"""Assert that the client has been seen, alive and well."""
1071
self.last_checked_ok = datetime.datetime.utcnow()
1072
self.last_checker_status = 0
1073
self.last_checker_signal = None
1074
self.bump_timeout()
1075
1076
def bump_timeout(self, timeout=None):
1077
"""Bump up the timeout for this client."""
591
1078
if timeout is None:
592
1079
timeout = self.timeout
593
self.last_checked_ok = datetime.datetime.utcnow()
594
1080
if self.disable_initiator_tag is not None:
595
gobject.source_remove(self.disable_initiator_tag)
1081
GLib.source_remove(self.disable_initiator_tag)
1082
self.disable_initiator_tag = None
596
1083
if getattr(self, "enabled", False):
597
self.disable_initiator_tag = (gobject.timeout_add
598
(_timedelta_to_milliseconds
599
(timeout), self.disable))
1084
self.disable_initiator_tag = GLib.timeout_add(
1085
int(timeout.total_seconds() * 1000), self.disable)
600
1086
self.expires = datetime.datetime.utcnow() + timeout
601
1087
602
1088
def need_approval(self):
603
1089
self.last_approval_request = datetime.datetime.utcnow()
604
1090
605
1091
def start_checker(self):
606
1092
"""Start a new checker subprocess if one is not running.
607
1093
608
1094
If a checker already exists, leave it running and do
609
1095
nothing."""
610
1096
# The reason for not killing a running checker is that if we
611
# did that, then if a checker (for some reason) started
612
# running slowly and taking more than 'interval' time, the
613
# client would inevitably timeout, since no checker would get
614
# a chance to run to completion. If we instead leave running
1097
# did that, and if a checker (for some reason) started running
1098
# slowly and taking more than 'interval' time, then the client
1099
# would inevitably timeout, since no checker would get a
1100
# chance to run to completion. If we instead leave running
615
1101
# checkers alone, the checker would have to take more time
616
1102
# than 'timeout' for the client to be disabled, which is as it
617
1103
# should be.
618
619
# If a checker exists, make sure it is not a zombie
620
try:
621
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
622
except (AttributeError, OSError) as error:
623
if (isinstance(error, OSError)
624
and error.errno != errno.ECHILD):
625
raise error
626
else:
627
if pid:
628
logger.warning("Checker was a zombie")
629
gobject.source_remove(self.checker_callback_tag)
630
self.checker_callback(pid, status,
631
self.current_checker_command)
1104
1105
if self.checker is not None and not self.checker.is_alive():
1106
logger.warning("Checker was not alive; joining")
1107
self.checker.join()
1108
self.checker = None
632
1109
# Start a new checker if needed
633
1110
if self.checker is None:
1111
# Escape attributes for the shell
1112
escaped_attrs = {
1113
attr: re.escape(str(getattr(self, attr)))
1114
for attr in self.runtime_expansions}
634
1115
try:
635
# In case checker_command has exactly one % operator
636
command = self.checker_command % self.host
637
except TypeError:
638
# Escape attributes for the shell
639
escaped_attrs = dict(
640
(attr,
641
re.escape(unicode(str(getattr(self, attr, "")),
642
errors=
643
'replace')))
644
for attr in
645
self.runtime_expansions)
646
647
try:
648
command = self.checker_command % escaped_attrs
649
except TypeError as error:
650
logger.error('Could not format string "%s":'
651
' %s', self.checker_command, error)
652
return True # Try again later
1116
command = self.checker_command % escaped_attrs
1117
except TypeError as error:
1118
logger.error('Could not format string "%s"',
1119
self.checker_command,
1120
exc_info=error)
1121
return True # Try again later
653
1122
self.current_checker_command = command
654
try:
655
logger.info("Starting checker %r for %s",
656
command, self.name)
657
# We don't need to redirect stdout and stderr, since
658
# in normal mode, that is already done by daemon(),
659
# and in debug mode we don't want to. (Stdin is
660
# always replaced by /dev/null.)
661
self.checker = subprocess.Popen(command,
662
close_fds=True,
663
shell=True, cwd="/")
664
self.checker_callback_tag = (gobject.child_watch_add
665
(self.checker.pid,
666
self.checker_callback,
667
data=command))
668
# The checker may have completed before the gobject
669
# watch was added. Check for this.
670
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
671
if pid:
672
gobject.source_remove(self.checker_callback_tag)
673
self.checker_callback(pid, status, command)
674
except OSError as error:
675
logger.error("Failed to start subprocess: %s",
676
error)
677
# Re-run this periodically if run by gobject.timeout_add
1123
logger.info("Starting checker %r for %s", command,
1124
self.name)
1125
# We don't need to redirect stdout and stderr, since
1126
# in normal mode, that is already done by daemon(),
1127
# and in debug mode we don't want to. (Stdin is
1128
# always replaced by /dev/null.)
1129
# The exception is when not debugging but nevertheless
1130
# running in the foreground; use the previously
1131
# created wnull.
1132
popen_args = {"close_fds": True,
1133
"shell": True,
1134
"cwd": "/"}
1135
if (not self.server_settings["debug"]
1136
and self.server_settings["foreground"]):
1137
popen_args.update({"stdout": wnull,
1138
"stderr": wnull})
1139
pipe = multiprocessing.Pipe(duplex=False)
1140
self.checker = multiprocessing.Process(
1141
target=call_pipe,
1142
args=(pipe[1], subprocess.call, command),
1143
kwargs=popen_args)
1144
self.checker.start()
1145
self.checker_callback_tag = GLib.io_add_watch(
1146
pipe[0].fileno(), GLib.IO_IN,
1147
self.checker_callback, pipe[0], command)
1148
# Re-run this periodically if run by GLib.timeout_add
678
1149
return True
679
1150
680
1151
def stop_checker(self):
681
1152
"""Force the checker process, if any, to stop."""
682
1153
if self.checker_callback_tag:
683
gobject.source_remove(self.checker_callback_tag)
1154
GLib.source_remove(self.checker_callback_tag)
684
1155
self.checker_callback_tag = None
685
1156
if getattr(self, "checker", None) is None:
686
1157
return
687
1158
logger.debug("Stopping checker for %(name)s", vars(self))
688
try:
689
os.kill(self.checker.pid, signal.SIGTERM)
690
#time.sleep(0.5)
691
#if self.checker.poll() is None:
692
# os.kill(self.checker.pid, signal.SIGKILL)
693
except OSError as error:
694
if error.errno != errno.ESRCH: # No such process
695
raise
1159
self.checker.terminate()
696
1160
self.checker = None
697
1161
698
1162
699
def dbus_service_property(dbus_interface, signature="v",
700
access="readwrite", byte_arrays=False):
1163
def dbus_service_property(dbus_interface,
1164
signature="v",
1165
access="readwrite",
1166
byte_arrays=False):
701
1167
"""Decorators for marking methods of a DBusObjectWithProperties to
702
1168
become properties on the D-Bus.
703
1169
704
1170
The decorated method will be called with no arguments by "Get"
705
1171
and with one argument by "Set".
706
1172
707
1173
The parameters, where they are supported, are the same as
708
1174
dbus.service.method, except there is only "signature", since the
709
1175
type from Get() and the type sent to Set() is the same.
712
1178
# "Set" method, so we fail early here:
713
1179
if byte_arrays and signature != "ay":
714
1180
raise ValueError("Byte arrays not supported for non-'ay'"
715
" signature %r" % signature)
1181
" signature {!r}".format(signature))
1182
716
1183
def decorator(func):
717
1184
func._dbus_is_property = True
718
1185
func._dbus_interface = dbus_interface
721
1188
func._dbus_name = func.__name__
722
1189
if func._dbus_name.endswith("_dbus_property"):
723
1190
func._dbus_name = func._dbus_name[:-14]
724
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
725
return func
1191
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1192
return func
1193
1194
return decorator
1195
1196
1197
def dbus_interface_annotations(dbus_interface):
1198
"""Decorator for marking functions returning interface annotations
1199
1200
Usage:
1201
1202
@dbus_interface_annotations("org.example.Interface")
1203
def _foo(self): # Function name does not matter
1204
return {"org.freedesktop.DBus.Deprecated": "true",
1205
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1206
"false"}
1207
"""
1208
1209
def decorator(func):
1210
func._dbus_is_interface = True
1211
func._dbus_interface = dbus_interface
1212
func._dbus_name = dbus_interface
1213
return func
1214
1215
return decorator
1216
1217
1218
def dbus_annotations(annotations):
1219
"""Decorator to annotate D-Bus methods, signals or properties
1220
Usage:
1221
1222
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1223
"org.freedesktop.DBus.Property."
1224
"EmitsChangedSignal": "false"})
1225
@dbus_service_property("org.example.Interface", signature="b",
1226
access="r")
1227
def Property_dbus_property(self):
1228
return dbus.Boolean(False)
1229
1230
See also the DBusObjectWithAnnotations class.
1231
"""
1232
1233
def decorator(func):
1234
func._dbus_annotations = annotations
1235
return func
1236
726
1237
return decorator
727
1238
728
1239
729
1240
class DBusPropertyException(dbus.exceptions.DBusException):
730
1241
"""A base class for D-Bus property-related exceptions
731
1242
"""
732
def __unicode__(self):
733
return unicode(str(self))
1243
pass
734
1244
735
1245
736
1246
class DBusPropertyAccessException(DBusPropertyException):
745
1255
pass
746
1256
747
1257
748
class DBusObjectWithProperties(dbus.service.Object):
1258
class DBusObjectWithAnnotations(dbus.service.Object):
1259
"""A D-Bus object with annotations.
1260
1261
Classes inheriting from this can use the dbus_annotations
1262
decorator to add annotations to methods or signals.
1263
"""
1264
1265
@staticmethod
1266
def _is_dbus_thing(thing):
1267
"""Returns a function testing if an attribute is a D-Bus thing
1268
1269
If called like _is_dbus_thing("method") it returns a function
1270
suitable for use as predicate to inspect.getmembers().
1271
"""
1272
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1273
False)
1274
1275
def _get_all_dbus_things(self, thing):
1276
"""Returns a generator of (name, attribute) pairs
1277
"""
1278
return ((getattr(athing.__get__(self), "_dbus_name", name),
1279
athing.__get__(self))
1280
for cls in self.__class__.__mro__
1281
for name, athing in
1282
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1283
1284
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1285
out_signature="s",
1286
path_keyword='object_path',
1287
connection_keyword='connection')
1288
def Introspect(self, object_path, connection):
1289
"""Overloading of standard D-Bus method.
1290
1291
Inserts annotation tags on methods and signals.
1292
"""
1293
xmlstring = dbus.service.Object.Introspect(self, object_path,
1294
connection)
1295
try:
1296
document = xml.dom.minidom.parseString(xmlstring)
1297
1298
for if_tag in document.getElementsByTagName("interface"):
1299
# Add annotation tags
1300
for typ in ("method", "signal"):
1301
for tag in if_tag.getElementsByTagName(typ):
1302
annots = dict()
1303
for name, prop in (self.
1304
_get_all_dbus_things(typ)):
1305
if (name == tag.getAttribute("name")
1306
and prop._dbus_interface
1307
== if_tag.getAttribute("name")):
1308
annots.update(getattr(
1309
prop, "_dbus_annotations", {}))
1310
for name, value in annots.items():
1311
ann_tag = document.createElement(
1312
"annotation")
1313
ann_tag.setAttribute("name", name)
1314
ann_tag.setAttribute("value", value)
1315
tag.appendChild(ann_tag)
1316
# Add interface annotation tags
1317
for annotation, value in dict(
1318
itertools.chain.from_iterable(
1319
annotations().items()
1320
for name, annotations
1321
in self._get_all_dbus_things("interface")
1322
if name == if_tag.getAttribute("name")
1323
)).items():
1324
ann_tag = document.createElement("annotation")
1325
ann_tag.setAttribute("name", annotation)
1326
ann_tag.setAttribute("value", value)
1327
if_tag.appendChild(ann_tag)
1328
# Fix argument name for the Introspect method itself
1329
if (if_tag.getAttribute("name")
1330
== dbus.INTROSPECTABLE_IFACE):
1331
for cn in if_tag.getElementsByTagName("method"):
1332
if cn.getAttribute("name") == "Introspect":
1333
for arg in cn.getElementsByTagName("arg"):
1334
if (arg.getAttribute("direction")
1335
== "out"):
1336
arg.setAttribute("name",
1337
"xml_data")
1338
xmlstring = document.toxml("utf-8")
1339
document.unlink()
1340
except (AttributeError, xml.dom.DOMException,
1341
xml.parsers.expat.ExpatError) as error:
1342
logger.error("Failed to override Introspection method",
1343
exc_info=error)
1344
return xmlstring
1345
1346
1347
class DBusObjectWithProperties(DBusObjectWithAnnotations):
749
1348
"""A D-Bus object with properties.
750
1349
751
1350
Classes inheriting from this can use the dbus_service_property
752
1351
decorator to expose methods as D-Bus properties. It exposes the
753
1352
standard Get(), Set(), and GetAll() methods on the D-Bus.
754
1353
"""
755
756
@staticmethod
757
def _is_dbus_property(obj):
758
return getattr(obj, "_dbus_is_property", False)
759
760
def _get_all_dbus_properties(self):
761
"""Returns a generator of (name, attribute) pairs
762
"""
763
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
764
for cls in self.__class__.__mro__
765
for name, prop in
766
inspect.getmembers(cls, self._is_dbus_property))
767
1354
768
1355
def _get_dbus_property(self, interface_name, property_name):
769
1356
"""Returns a bound method if one exists which is a D-Bus
770
1357
property with the specified name and interface.
771
1358
"""
772
for cls in self.__class__.__mro__:
773
for name, value in (inspect.getmembers
774
(cls, self._is_dbus_property)):
1359
for cls in self.__class__.__mro__:
1360
for name, value in inspect.getmembers(
1361
cls, self._is_dbus_thing("property")):
775
1362
if (value._dbus_name == property_name
776
1363
and value._dbus_interface == interface_name):
777
1364
return value.__get__(self)
778
1365
779
1366
# No such property
780
raise DBusPropertyNotFound(self.dbus_object_path + ":"
781
+ interface_name + "."
782
+ property_name)
783
784
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1367
raise DBusPropertyNotFound("{}:{}.{}".format(
1368
self.dbus_object_path, interface_name, property_name))
1369
1370
@classmethod
1371
def _get_all_interface_names(cls):
1372
"""Get a sequence of all interfaces supported by an object"""
1373
return (name for name in set(getattr(getattr(x, attr),
1374
"_dbus_interface", None)
1375
for x in (inspect.getmro(cls))
1376
for attr in dir(x))
1377
if name is not None)
1378
1379
@dbus.service.method(dbus.PROPERTIES_IFACE,
1380
in_signature="ss",
785
1381
out_signature="v")
786
1382
def Get(self, interface_name, property_name):
787
1383
"""Standard D-Bus property Get() method, see D-Bus standard.
793
1389
if not hasattr(value, "variant_level"):
794
1390
return value
795
1391
return type(value)(value, variant_level=value.variant_level+1)
796
1392
797
1393
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
798
1394
def Set(self, interface_name, property_name, value):
799
1395
"""Standard D-Bus property Set() method, see D-Bus standard.
805
1401
# The byte_arrays option is not supported yet on
806
1402
# signatures other than "ay".
807
1403
if prop._dbus_signature != "ay":
808
raise ValueError
809
value = dbus.ByteArray(''.join(unichr(byte)
810
for byte in value))
1404
raise ValueError("Byte arrays not supported for non-"
1405
"'ay' signature {!r}"
1406
.format(prop._dbus_signature))
1407
value = dbus.ByteArray(b''.join(chr(byte)
1408
for byte in value))
811
1409
prop(value)
812
813
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1410
1411
@dbus.service.method(dbus.PROPERTIES_IFACE,
1412
in_signature="s",
814
1413
out_signature="a{sv}")
815
1414
def GetAll(self, interface_name):
816
1415
"""Standard D-Bus property GetAll() method, see D-Bus
817
1416
standard.
818
1417
819
1418
Note: Will not include properties with access="write".
820
1419
"""
821
1420
properties = {}
822
for name, prop in self._get_all_dbus_properties():
1421
for name, prop in self._get_all_dbus_things("property"):
823
1422
if (interface_name
824
1423
and interface_name != prop._dbus_interface):
825
1424
# Interface non-empty but did not match
831
1430
if not hasattr(value, "variant_level"):
832
1431
properties[name] = value
833
1432
continue
834
properties[name] = type(value)(value, variant_level=
835
value.variant_level+1)
1433
properties[name] = type(value)(
1434
value, variant_level=value.variant_level + 1)
836
1435
return dbus.Dictionary(properties, signature="sv")
837
1436
1437
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1438
def PropertiesChanged(self, interface_name, changed_properties,
1439
invalidated_properties):
1440
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1441
standard.
1442
"""
1443
pass
1444
838
1445
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
839
1446
out_signature="s",
840
1447
path_keyword='object_path',
841
1448
connection_keyword='connection')
842
1449
def Introspect(self, object_path, connection):
843
"""Standard D-Bus method, overloaded to insert property tags.
1450
"""Overloading of standard D-Bus method.
1451
1452
Inserts property tags and interface annotation tags.
844
1453
"""
845
xmlstring = dbus.service.Object.Introspect(self, object_path,
846
connection)
1454
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1455
object_path,
1456
connection)
847
1457
try:
848
1458
document = xml.dom.minidom.parseString(xmlstring)
1459
849
1460
def make_tag(document, name, prop):
850
1461
e = document.createElement("property")
851
1462
e.setAttribute("name", name)
852
1463
e.setAttribute("type", prop._dbus_signature)
853
1464
e.setAttribute("access", prop._dbus_access)
854
1465
return e
1466
855
1467
for if_tag in document.getElementsByTagName("interface"):
1468
# Add property tags
856
1469
for tag in (make_tag(document, name, prop)
857
1470
for name, prop
858
in self._get_all_dbus_properties()
1471
in self._get_all_dbus_things("property")
859
1472
if prop._dbus_interface
860
1473
== if_tag.getAttribute("name")):
861
1474
if_tag.appendChild(tag)
1475
# Add annotation tags for properties
1476
for tag in if_tag.getElementsByTagName("property"):
1477
annots = dict()
1478
for name, prop in self._get_all_dbus_things(
1479
"property"):
1480
if (name == tag.getAttribute("name")
1481
and prop._dbus_interface
1482
== if_tag.getAttribute("name")):
1483
annots.update(getattr(
1484
prop, "_dbus_annotations", {}))
1485
for name, value in annots.items():
1486
ann_tag = document.createElement(
1487
"annotation")
1488
ann_tag.setAttribute("name", name)
1489
ann_tag.setAttribute("value", value)
1490
tag.appendChild(ann_tag)
862
1491
# Add the names to the return values for the
863
1492
# "org.freedesktop.DBus.Properties" methods
864
1493
if (if_tag.getAttribute("name")
879
1508
except (AttributeError, xml.dom.DOMException,
880
1509
xml.parsers.expat.ExpatError) as error:
881
1510
logger.error("Failed to override Introspection method",
882
error)
883
return xmlstring
884
885
886
def datetime_to_dbus (dt, variant_level=0):
1511
exc_info=error)
1512
return xmlstring
1513
1514
1515
try:
1516
dbus.OBJECT_MANAGER_IFACE
1517
except AttributeError:
1518
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1519
1520
1521
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1522
"""A D-Bus object with an ObjectManager.
1523
1524
Classes inheriting from this exposes the standard
1525
GetManagedObjects call and the InterfacesAdded and
1526
InterfacesRemoved signals on the standard
1527
"org.freedesktop.DBus.ObjectManager" interface.
1528
1529
Note: No signals are sent automatically; they must be sent
1530
manually.
1531
"""
1532
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1533
out_signature="a{oa{sa{sv}}}")
1534
def GetManagedObjects(self):
1535
"""This function must be overridden"""
1536
raise NotImplementedError()
1537
1538
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1539
signature="oa{sa{sv}}")
1540
def InterfacesAdded(self, object_path, interfaces_and_properties):
1541
pass
1542
1543
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1544
def InterfacesRemoved(self, object_path, interfaces):
1545
pass
1546
1547
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1548
out_signature="s",
1549
path_keyword='object_path',
1550
connection_keyword='connection')
1551
def Introspect(self, object_path, connection):
1552
"""Overloading of standard D-Bus method.
1553
1554
Override return argument name of GetManagedObjects to be
1555
"objpath_interfaces_and_properties"
1556
"""
1557
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1558
object_path,
1559
connection)
1560
try:
1561
document = xml.dom.minidom.parseString(xmlstring)
1562
1563
for if_tag in document.getElementsByTagName("interface"):
1564
# Fix argument name for the GetManagedObjects method
1565
if (if_tag.getAttribute("name")
1566
== dbus.OBJECT_MANAGER_IFACE):
1567
for cn in if_tag.getElementsByTagName("method"):
1568
if (cn.getAttribute("name")
1569
== "GetManagedObjects"):
1570
for arg in cn.getElementsByTagName("arg"):
1571
if (arg.getAttribute("direction")
1572
== "out"):
1573
arg.setAttribute(
1574
"name",
1575
"objpath_interfaces"
1576
"_and_properties")
1577
xmlstring = document.toxml("utf-8")
1578
document.unlink()
1579
except (AttributeError, xml.dom.DOMException,
1580
xml.parsers.expat.ExpatError) as error:
1581
logger.error("Failed to override Introspection method",
1582
exc_info=error)
1583
return xmlstring
1584
1585
1586
def datetime_to_dbus(dt, variant_level=0):
887
1587
"""Convert a UTC datetime.datetime() to a D-Bus type."""
888
1588
if dt is None:
889
return dbus.String("", variant_level = variant_level)
890
return dbus.String(dt.isoformat(),
891
variant_level=variant_level)
892
893
894
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
895
.__metaclass__):
896
"""Applied to an empty subclass of a D-Bus object, this metaclass
897
will add additional D-Bus attributes matching a certain pattern.
1589
return dbus.String("", variant_level=variant_level)
1590
return dbus.String(dt.isoformat(), variant_level=variant_level)
1591
1592
1593
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1594
"""A class decorator; applied to a subclass of
1595
dbus.service.Object, it will add alternate D-Bus attributes with
1596
interface names according to the "alt_interface_names" mapping.
1597
Usage:
1598
1599
@alternate_dbus_interfaces({"org.example.Interface":
1600
"net.example.AlternateInterface"})
1601
class SampleDBusObject(dbus.service.Object):
1602
@dbus.service.method("org.example.Interface")
1603
def SampleDBusMethod():
1604
pass
1605
1606
The above "SampleDBusMethod" on "SampleDBusObject" will be
1607
reachable via two interfaces: "org.example.Interface" and
1608
"net.example.AlternateInterface", the latter of which will have
1609
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1610
"true", unless "deprecate" is passed with a False value.
1611
1612
This works for methods and signals, and also for D-Bus properties
1613
(from DBusObjectWithProperties) and interfaces (from the
1614
dbus_interface_annotations decorator).
898
1615
"""
899
def __new__(mcs, name, bases, attr):
900
# Go through all the base classes which could have D-Bus
901
# methods, signals, or properties in them
902
for base in (b for b in bases
903
if issubclass(b, dbus.service.Object)):
904
# Go though all attributes of the base class
905
for attrname, attribute in inspect.getmembers(base):
1616
1617
def wrapper(cls):
1618
for orig_interface_name, alt_interface_name in (
1619
alt_interface_names.items()):
1620
attr = {}
1621
interface_names = set()
1622
# Go though all attributes of the class
1623
for attrname, attribute in inspect.getmembers(cls):
906
1624
# Ignore non-D-Bus attributes, and D-Bus attributes
907
1625
# with the wrong interface name
908
1626
if (not hasattr(attribute, "_dbus_interface")
909
or not attribute._dbus_interface
910
.startswith("se.recompile.Mandos")):
1627
or not attribute._dbus_interface.startswith(
1628
orig_interface_name)):
911
1629
continue
912
1630
# Create an alternate D-Bus interface name based on
913
1631
# the current name
914
alt_interface = (attribute._dbus_interface
915
.replace("se.recompile.Mandos",
916
"se.bsnet.fukt.Mandos"))
1632
alt_interface = attribute._dbus_interface.replace(
1633
orig_interface_name, alt_interface_name)
1634
interface_names.add(alt_interface)
917
1635
# Is this a D-Bus signal?
918
1636
if getattr(attribute, "_dbus_is_signal", False):
919
# Extract the original non-method function by
920
# black magic
921
nonmethod_func = (dict(
1637
# Extract the original non-method undecorated
1638
# function by black magic
1639
if sys.version_info.major == 2:
1640
nonmethod_func = (dict(
922
1641
zip(attribute.func_code.co_freevars,
923
attribute.__closure__))["func"]
924
.cell_contents)
1642
attribute.__closure__))
1643
["func"].cell_contents)
1644
else:
1645
nonmethod_func = (dict(
1646
zip(attribute.__code__.co_freevars,
1647
attribute.__closure__))
1648
["func"].cell_contents)
925
1649
# Create a new, but exactly alike, function
926
1650
# object, and decorate it to be a new D-Bus signal
927
1651
# with the alternate D-Bus interface name
928
new_function = (dbus.service.signal
929
(alt_interface,
930
attribute._dbus_signature)
931
(types.FunctionType(
932
nonmethod_func.func_code,
933
nonmethod_func.func_globals,
934
nonmethod_func.func_name,
935
nonmethod_func.func_defaults,
936
nonmethod_func.func_closure)))
1652
new_function = copy_function(nonmethod_func)
1653
new_function = (dbus.service.signal(
1654
alt_interface,
1655
attribute._dbus_signature)(new_function))
1656
# Copy annotations, if any
1657
try:
1658
new_function._dbus_annotations = dict(
1659
attribute._dbus_annotations)
1660
except AttributeError:
1661
pass
1662
937
1663
# Define a creator of a function to call both the
938
# old and new functions, so both the old and new
939
# signals gets sent when the function is called
1664
# original and alternate functions, so both the
1665
# original and alternate signals gets sent when
1666
# the function is called
940
1667
def fixscope(func1, func2):
941
1668
"""This function is a scope container to pass
942
1669
func1 and func2 to the "call_both" function
943
1670
outside of its arguments"""
1671
1672
@functools.wraps(func2)
944
1673
def call_both(*args, **kwargs):
945
1674
"""This function will emit two D-Bus
946
1675
signals by calling func1 and func2"""
947
1676
func1(*args, **kwargs)
948
1677
func2(*args, **kwargs)
1678
# Make wrapper function look like a D-Bus
1679
# signal
1680
for name, attr in inspect.getmembers(func2):
1681
if name.startswith("_dbus_"):
1682
setattr(call_both, name, attr)
1683
949
1684
return call_both
950
1685
# Create the "call_both" function and add it to
951
1686
# the class
952
attr[attrname] = fixscope(attribute,
953
new_function)
1687
attr[attrname] = fixscope(attribute, new_function)
954
1688
# Is this a D-Bus method?
955
1689
elif getattr(attribute, "_dbus_is_method", False):
956
1690
# Create a new, but exactly alike, function
957
1691
# object. Decorate it to be a new D-Bus method
958
1692
# with the alternate D-Bus interface name. Add it
959
1693
# to the class.
960
attr[attrname] = (dbus.service.method
961
(alt_interface,
962
attribute._dbus_in_signature,
963
attribute._dbus_out_signature)
964
(types.FunctionType
965
(attribute.func_code,
966
attribute.func_globals,
967
attribute.func_name,
968
attribute.func_defaults,
969
attribute.func_closure)))
1694
attr[attrname] = (
1695
dbus.service.method(
1696
alt_interface,
1697
attribute._dbus_in_signature,
1698
attribute._dbus_out_signature)
1699
(copy_function(attribute)))
1700
# Copy annotations, if any
1701
try:
1702
attr[attrname]._dbus_annotations = dict(
1703
attribute._dbus_annotations)
1704
except AttributeError:
1705
pass
970
1706
# Is this a D-Bus property?
971
1707
elif getattr(attribute, "_dbus_is_property", False):
972
1708
# Create a new, but exactly alike, function
973
1709
# object, and decorate it to be a new D-Bus
974
1710
# property with the alternate D-Bus interface
975
1711
# name. Add it to the class.
976
attr[attrname] = (dbus_service_property
977
(alt_interface,
978
attribute._dbus_signature,
979
attribute._dbus_access,
980
attribute
981
._dbus_get_args_options
982
["byte_arrays"])
983
(types.FunctionType
984
(attribute.func_code,
985
attribute.func_globals,
986
attribute.func_name,
987
attribute.func_defaults,
988
attribute.func_closure)))
989
return type.__new__(mcs, name, bases, attr)
990
991
1712
attr[attrname] = (dbus_service_property(
1713
alt_interface, attribute._dbus_signature,
1714
attribute._dbus_access,
1715
attribute._dbus_get_args_options
1716
["byte_arrays"])
1717
(copy_function(attribute)))
1718
# Copy annotations, if any
1719
try:
1720
attr[attrname]._dbus_annotations = dict(
1721
attribute._dbus_annotations)
1722
except AttributeError:
1723
pass
1724
# Is this a D-Bus interface?
1725
elif getattr(attribute, "_dbus_is_interface", False):
1726
# Create a new, but exactly alike, function
1727
# object. Decorate it to be a new D-Bus interface
1728
# with the alternate D-Bus interface name. Add it
1729
# to the class.
1730
attr[attrname] = (
1731
dbus_interface_annotations(alt_interface)
1732
(copy_function(attribute)))
1733
if deprecate:
1734
# Deprecate all alternate interfaces
1735
iname = "_AlternateDBusNames_interface_annotation{}"
1736
for interface_name in interface_names:
1737
1738
@dbus_interface_annotations(interface_name)
1739
def func(self):
1740
return {"org.freedesktop.DBus.Deprecated":
1741
"true"}
1742
# Find an unused name
1743
for aname in (iname.format(i)
1744
for i in itertools.count()):
1745
if aname not in attr:
1746
attr[aname] = func
1747
break
1748
if interface_names:
1749
# Replace the class with a new subclass of it with
1750
# methods, signals, etc. as created above.
1751
if sys.version_info.major == 2:
1752
cls = type(b"{}Alternate".format(cls.__name__),
1753
(cls, ), attr)
1754
else:
1755
cls = type("{}Alternate".format(cls.__name__),
1756
(cls, ), attr)
1757
return cls
1758
1759
return wrapper
1760
1761
1762
@alternate_dbus_interfaces({"se.recompile.Mandos":
1763
"se.bsnet.fukt.Mandos"})
992
1764
class ClientDBus(Client, DBusObjectWithProperties):
993
1765
"""A Client class using D-Bus
994
1766
995
1767
Attributes:
996
1768
dbus_object_path: dbus.ObjectPath
997
1769
bus: dbus.SystemBus()
998
1770
"""
999
1771
1000
1772
runtime_expansions = (Client.runtime_expansions
1001
+ ("dbus_object_path",))
1002
1773
+ ("dbus_object_path", ))
1774
1775
_interface = "se.recompile.Mandos.Client"
1776
1003
1777
# dbus.service.Object doesn't use super(), so we can't either.
1004
1005
def __init__(self, bus = None, *args, **kwargs):
1778
1779
def __init__(self, bus=None, *args, **kwargs):
1006
1780
self.bus = bus
1007
1781
Client.__init__(self, *args, **kwargs)
1008
1009
self._approvals_pending = 0
1010
1782
# Only now, when this client is initialized, can it show up on
1011
1783
# the D-Bus
1012
client_object_name = unicode(self.name).translate(
1784
client_object_name = str(self.name).translate(
1013
1785
{ord("."): ord("_"),
1014
1786
ord("-"): ord("_")})
1015
self.dbus_object_path = (dbus.ObjectPath
1016
("/clients/" + client_object_name))
1787
self.dbus_object_path = dbus.ObjectPath(
1788
"/clients/" + client_object_name)
1017
1789
DBusObjectWithProperties.__init__(self, self.bus,
1018
1790
self.dbus_object_path)
1019
1020
def notifychangeproperty(transform_func,
1021
dbus_name, type_func=lambda x: x,
1022
variant_level=1):
1791
1792
def notifychangeproperty(transform_func, dbus_name,
1793
type_func=lambda x: x,
1794
variant_level=1,
1795
invalidate_only=False,
1796
_interface=_interface):
1023
1797
""" Modify a variable so that it's a property which announces
1024
1798
its changes to DBus.
1025
1799
1026
1800
transform_fun: Function that takes a value and a variant_level
1027
1801
and transforms it to a D-Bus type.
1028
1802
dbus_name: D-Bus name of the variable
1030
1804
to the D-Bus. Default: no transform
1031
1805
variant_level: D-Bus variant level. Default: 1
1032
1806
"""
1033
attrname = "_{0}".format(dbus_name)
1807
attrname = "_{}".format(dbus_name)
1808
1034
1809
def setter(self, value):
1035
1810
if hasattr(self, "dbus_object_path"):
1036
1811
if (not hasattr(self, attrname) or
1037
1812
type_func(getattr(self, attrname, None))
1038
1813
!= type_func(value)):
1039
dbus_value = transform_func(type_func(value),
1040
variant_level
1041
=variant_level)
1042
self.PropertyChanged(dbus.String(dbus_name),
1043
dbus_value)
1814
if invalidate_only:
1815
self.PropertiesChanged(
1816
_interface, dbus.Dictionary(),
1817
dbus.Array((dbus_name, )))
1818
else:
1819
dbus_value = transform_func(
1820
type_func(value),
1821
variant_level=variant_level)
1822
self.PropertyChanged(dbus.String(dbus_name),
1823
dbus_value)
1824
self.PropertiesChanged(
1825
_interface,
1826
dbus.Dictionary({dbus.String(dbus_name):
1827
dbus_value}),
1828
dbus.Array())
1044
1829
setattr(self, attrname, value)
1045
1830
1046
1831
return property(lambda self: getattr(self, attrname), setter)
1047
1048
1832
1049
1833
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1050
1834
approvals_pending = notifychangeproperty(dbus.Boolean,
1051
1835
"ApprovalPending",
1052
type_func = bool)
1836
type_func=bool)
1053
1837
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1054
1838
last_enabled = notifychangeproperty(datetime_to_dbus,
1055
1839
"LastEnabled")
1056
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1057
type_func = lambda checker:
1058
checker is not None)
1840
checker = notifychangeproperty(
1841
dbus.Boolean, "CheckerRunning",
1842
type_func=lambda checker: checker is not None)
1059
1843
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1060
1844
"LastCheckedOK")
1845
last_checker_status = notifychangeproperty(dbus.Int16,
1846
"LastCheckerStatus")
1061
1847
last_approval_request = notifychangeproperty(
1062
1848
datetime_to_dbus, "LastApprovalRequest")
1063
1849
approved_by_default = notifychangeproperty(dbus.Boolean,
1064
1850
"ApprovedByDefault")
1065
approval_delay = notifychangeproperty(dbus.UInt16,
1066
"ApprovalDelay",
1067
type_func =
1068
_timedelta_to_milliseconds)
1851
approval_delay = notifychangeproperty(
1852
dbus.UInt64, "ApprovalDelay",
1853
type_func=lambda td: td.total_seconds() * 1000)
1069
1854
approval_duration = notifychangeproperty(
1070
dbus.UInt16, "ApprovalDuration",
1071
type_func = _timedelta_to_milliseconds)
1855
dbus.UInt64, "ApprovalDuration",
1856
type_func=lambda td: td.total_seconds() * 1000)
1072
1857
host = notifychangeproperty(dbus.String, "Host")
1073
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1074
type_func =
1075
_timedelta_to_milliseconds)
1858
timeout = notifychangeproperty(
1859
dbus.UInt64, "Timeout",
1860
type_func=lambda td: td.total_seconds() * 1000)
1076
1861
extended_timeout = notifychangeproperty(
1077
dbus.UInt16, "ExtendedTimeout",
1078
type_func = _timedelta_to_milliseconds)
1079
interval = notifychangeproperty(dbus.UInt16,
1080
"Interval",
1081
type_func =
1082
_timedelta_to_milliseconds)
1862
dbus.UInt64, "ExtendedTimeout",
1863
type_func=lambda td: td.total_seconds() * 1000)
1864
interval = notifychangeproperty(
1865
dbus.UInt64, "Interval",
1866
type_func=lambda td: td.total_seconds() * 1000)
1083
1867
checker_command = notifychangeproperty(dbus.String, "Checker")
1084
1868
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1869
invalidate_only=True)
1870
1085
1871
del notifychangeproperty
1086
1872
1087
1873
def __del__(self, *args, **kwargs):
1088
1874
try:
1089
1875
self.remove_from_connection()
1092
1878
if hasattr(DBusObjectWithProperties, "__del__"):
1093
1879
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1094
1880
Client.__del__(self, *args, **kwargs)
1095
1096
def checker_callback(self, pid, condition, command,
1097
*args, **kwargs):
1098
self.checker_callback_tag = None
1099
self.checker = None
1100
if os.WIFEXITED(condition):
1101
exitstatus = os.WEXITSTATUS(condition)
1881
1882
def checker_callback(self, source, condition,
1883
connection, command, *args, **kwargs):
1884
ret = Client.checker_callback(self, source, condition,
1885
connection, command, *args,
1886
**kwargs)
1887
exitstatus = self.last_checker_status
1888
if exitstatus >= 0:
1102
1889
# Emit D-Bus signal
1103
1890
self.CheckerCompleted(dbus.Int16(exitstatus),
1104
dbus.Int64(condition),
1891
# This is specific to GNU libC
1892
dbus.Int64(exitstatus << 8),
1105
1893
dbus.String(command))
1106
1894
else:
1107
1895
# Emit D-Bus signal
1108
1896
self.CheckerCompleted(dbus.Int16(-1),
1109
dbus.Int64(condition),
1897
dbus.Int64(
1898
# This is specific to GNU libC
1899
(exitstatus << 8)
1900
| self.last_checker_signal),
1110
1901
dbus.String(command))
1111
1112
return Client.checker_callback(self, pid, condition, command,
1113
*args, **kwargs)
1114
1902
return ret
1903
1115
1904
def start_checker(self, *args, **kwargs):
1116
old_checker = self.checker
1117
if self.checker is not None:
1118
old_checker_pid = self.checker.pid
1119
else:
1120
old_checker_pid = None
1905
old_checker_pid = getattr(self.checker, "pid", None)
1121
1906
r = Client.start_checker(self, *args, **kwargs)
1122
1907
# Only if new checker process was started
1123
1908
if (self.checker is not None
1125
1910
# Emit D-Bus signal
1126
1911
self.CheckerStarted(self.current_checker_command)
1127
1912
return r
1128
1913
1129
1914
def _reset_approved(self):
1130
self._approved = None
1915
self.approved = None
1131
1916
return False
1132
1917
1133
1918
def approve(self, value=True):
1919
self.approved = value
1920
GLib.timeout_add(int(self.approval_duration.total_seconds()
1921
* 1000), self._reset_approved)
1134
1922
self.send_changedstate()
1135
self._approved = value
1136
gobject.timeout_add(_timedelta_to_milliseconds
1137
(self.approval_duration),
1138
self._reset_approved)
1139
1140
1141
## D-Bus methods, signals & properties
1142
_interface = "se.recompile.Mandos.Client"
1143
1144
## Signals
1145
1923
1924
# D-Bus methods, signals & properties
1925
1926
# Interfaces
1927
1928
# Signals
1929
1146
1930
# CheckerCompleted - signal
1147
1931
@dbus.service.signal(_interface, signature="nxs")
1148
1932
def CheckerCompleted(self, exitcode, waitstatus, command):
1149
1933
"D-Bus signal"
1150
1934
pass
1151
1935
1152
1936
# CheckerStarted - signal
1153
1937
@dbus.service.signal(_interface, signature="s")
1154
1938
def CheckerStarted(self, command):
1155
1939
"D-Bus signal"
1156
1940
pass
1157
1941
1158
1942
# PropertyChanged - signal
1943
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1159
1944
@dbus.service.signal(_interface, signature="sv")
1160
1945
def PropertyChanged(self, property, value):
1161
1946
"D-Bus signal"
1162
1947
pass
1163
1948
1164
1949
# GotSecret - signal
1165
1950
@dbus.service.signal(_interface)
1166
1951
def GotSecret(self):
1169
1954
server to mandos-client
1170
1955
"""
1171
1956
pass
1172
1957
1173
1958
# Rejected - signal
1174
1959
@dbus.service.signal(_interface, signature="s")
1175
1960
def Rejected(self, reason):
1176
1961
"D-Bus signal"
1177
1962
pass
1178
1963
1179
1964
# NeedApproval - signal
1180
1965
@dbus.service.signal(_interface, signature="tb")
1181
1966
def NeedApproval(self, timeout, default):
1182
1967
"D-Bus signal"
1183
1968
return self.need_approval()
1184
1185
# NeRwequest - signal
1186
@dbus.service.signal(_interface, signature="s")
1187
def NewRequest(self, ip):
1188
"""D-Bus signal
1189
Is sent after a client request a password.
1190
"""
1191
pass
1192
1193
## Methods
1194
1969
1970
# Methods
1971
1195
1972
# Approve - method
1196
1973
@dbus.service.method(_interface, in_signature="b")
1197
1974
def Approve(self, value):
1198
1975
self.approve(value)
1199
1976
1200
1977
# CheckedOK - method
1201
1978
@dbus.service.method(_interface)
1202
1979
def CheckedOK(self):
1203
1980
self.checked_ok()
1204
1981
1205
1982
# Enable - method
1983
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1206
1984
@dbus.service.method(_interface)
1207
1985
def Enable(self):
1208
1986
"D-Bus method"
1209
1987
self.enable()
1210
1988
1211
1989
# StartChecker - method
1990
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1212
1991
@dbus.service.method(_interface)
1213
1992
def StartChecker(self):
1214
1993
"D-Bus method"
1215
1994
self.start_checker()
1216
1995
1217
1996
# Disable - method
1997
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1218
1998
@dbus.service.method(_interface)
1219
1999
def Disable(self):
1220
2000
"D-Bus method"
1221
2001
self.disable()
1222
2002
1223
2003
# StopChecker - method
2004
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1224
2005
@dbus.service.method(_interface)
1225
2006
def StopChecker(self):
1226
2007
self.stop_checker()
1227
1228
## Properties
1229
2008
2009
# Properties
2010
1230
2011
# ApprovalPending - property
1231
2012
@dbus_service_property(_interface, signature="b", access="read")
1232
2013
def ApprovalPending_dbus_property(self):
1233
2014
return dbus.Boolean(bool(self.approvals_pending))
1234
2015
1235
2016
# ApprovedByDefault - property
1236
@dbus_service_property(_interface, signature="b",
2017
@dbus_service_property(_interface,
2018
signature="b",
1237
2019
access="readwrite")
1238
2020
def ApprovedByDefault_dbus_property(self, value=None):
1239
2021
if value is None: # get
1240
2022
return dbus.Boolean(self.approved_by_default)
1241
2023
self.approved_by_default = bool(value)
1242
2024
1243
2025
# ApprovalDelay - property
1244
@dbus_service_property(_interface, signature="t",
2026
@dbus_service_property(_interface,
2027
signature="t",
1245
2028
access="readwrite")
1246
2029
def ApprovalDelay_dbus_property(self, value=None):
1247
2030
if value is None: # get
1248
return dbus.UInt64(self.approval_delay_milliseconds())
2031
return dbus.UInt64(self.approval_delay.total_seconds()
2032
* 1000)
1249
2033
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1250
2034
1251
2035
# ApprovalDuration - property
1252
@dbus_service_property(_interface, signature="t",
2036
@dbus_service_property(_interface,
2037
signature="t",
1253
2038
access="readwrite")
1254
2039
def ApprovalDuration_dbus_property(self, value=None):
1255
2040
if value is None: # get
1256
return dbus.UInt64(_timedelta_to_milliseconds(
1257
self.approval_duration))
2041
return dbus.UInt64(self.approval_duration.total_seconds()
2042
* 1000)
1258
2043
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1259
2044
1260
2045
# Name - property
2046
@dbus_annotations(
2047
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1261
2048
@dbus_service_property(_interface, signature="s", access="read")
1262
2049
def Name_dbus_property(self):
1263
2050
return dbus.String(self.name)
1264
2051
2052
# KeyID - property
2053
@dbus_annotations(
2054
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2055
@dbus_service_property(_interface, signature="s", access="read")
2056
def KeyID_dbus_property(self):
2057
return dbus.String(self.key_id)
2058
1265
2059
# Fingerprint - property
2060
@dbus_annotations(
2061
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1266
2062
@dbus_service_property(_interface, signature="s", access="read")
1267
2063
def Fingerprint_dbus_property(self):
1268
2064
return dbus.String(self.fingerprint)
1269
2065
1270
2066
# Host - property
1271
@dbus_service_property(_interface, signature="s",
2067
@dbus_service_property(_interface,
2068
signature="s",
1272
2069
access="readwrite")
1273
2070
def Host_dbus_property(self, value=None):
1274
2071
if value is None: # get
1275
2072
return dbus.String(self.host)
1276
self.host = value
1277
2073
self.host = str(value)
2074
1278
2075
# Created - property
2076
@dbus_annotations(
2077
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1279
2078
@dbus_service_property(_interface, signature="s", access="read")
1280
2079
def Created_dbus_property(self):
1281
return dbus.String(datetime_to_dbus(self.created))
1282
2080
return datetime_to_dbus(self.created)
2081
1283
2082
# LastEnabled - property
1284
2083
@dbus_service_property(_interface, signature="s", access="read")
1285
2084
def LastEnabled_dbus_property(self):
1286
2085
return datetime_to_dbus(self.last_enabled)
1287
2086
1288
2087
# Enabled - property
1289
@dbus_service_property(_interface, signature="b",
2088
@dbus_service_property(_interface,
2089
signature="b",
1290
2090
access="readwrite")
1291
2091
def Enabled_dbus_property(self, value=None):
1292
2092
if value is None: # get
1295
2095
self.enable()
1296
2096
else:
1297
2097
self.disable()
1298
2098
1299
2099
# LastCheckedOK - property
1300
@dbus_service_property(_interface, signature="s",
2100
@dbus_service_property(_interface,
2101
signature="s",
1301
2102
access="readwrite")
1302
2103
def LastCheckedOK_dbus_property(self, value=None):
1303
2104
if value is not None:
1304
2105
self.checked_ok()
1305
2106
return
1306
2107
return datetime_to_dbus(self.last_checked_ok)
1307
2108
2109
# LastCheckerStatus - property
2110
@dbus_service_property(_interface, signature="n", access="read")
2111
def LastCheckerStatus_dbus_property(self):
2112
return dbus.Int16(self.last_checker_status)
2113
1308
2114
# Expires - property
1309
2115
@dbus_service_property(_interface, signature="s", access="read")
1310
2116
def Expires_dbus_property(self):
1311
2117
return datetime_to_dbus(self.expires)
1312
2118
1313
2119
# LastApprovalRequest - property
1314
2120
@dbus_service_property(_interface, signature="s", access="read")
1315
2121
def LastApprovalRequest_dbus_property(self):
1316
2122
return datetime_to_dbus(self.last_approval_request)
1317
2123
1318
2124
# Timeout - property
1319
@dbus_service_property(_interface, signature="t",
2125
@dbus_service_property(_interface,
2126
signature="t",
1320
2127
access="readwrite")
1321
2128
def Timeout_dbus_property(self, value=None):
1322
2129
if value is None: # get
1323
return dbus.UInt64(self.timeout_milliseconds())
2130
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2131
old_timeout = self.timeout
1324
2132
self.timeout = datetime.timedelta(0, 0, 0, value)
1325
if getattr(self, "disable_initiator_tag", None) is None:
1326
return
1327
# Reschedule timeout
1328
gobject.source_remove(self.disable_initiator_tag)
1329
self.disable_initiator_tag = None
1330
self.expires = None
1331
time_to_die = _timedelta_to_milliseconds((self
1332
.last_checked_ok
1333
+ self.timeout)
1334
- datetime.datetime
1335
.utcnow())
1336
if time_to_die <= 0:
1337
# The timeout has passed
1338
self.disable()
1339
else:
1340
self.expires = (datetime.datetime.utcnow()
1341
+ datetime.timedelta(milliseconds =
1342
time_to_die))
1343
self.disable_initiator_tag = (gobject.timeout_add
1344
(time_to_die, self.disable))
1345
2133
# Reschedule disabling
2134
if self.enabled:
2135
now = datetime.datetime.utcnow()
2136
self.expires += self.timeout - old_timeout
2137
if self.expires <= now:
2138
# The timeout has passed
2139
self.disable()
2140
else:
2141
if (getattr(self, "disable_initiator_tag", None)
2142
is None):
2143
return
2144
GLib.source_remove(self.disable_initiator_tag)
2145
self.disable_initiator_tag = GLib.timeout_add(
2146
int((self.expires - now).total_seconds() * 1000),
2147
self.disable)
2148
1346
2149
# ExtendedTimeout - property
1347
@dbus_service_property(_interface, signature="t",
2150
@dbus_service_property(_interface,
2151
signature="t",
1348
2152
access="readwrite")
1349
2153
def ExtendedTimeout_dbus_property(self, value=None):
1350
2154
if value is None: # get
1351
return dbus.UInt64(self.extended_timeout_milliseconds())
2155
return dbus.UInt64(self.extended_timeout.total_seconds()
2156
* 1000)
1352
2157
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1353
2158
1354
2159
# Interval - property
1355
@dbus_service_property(_interface, signature="t",
2160
@dbus_service_property(_interface,
2161
signature="t",
1356
2162
access="readwrite")
1357
2163
def Interval_dbus_property(self, value=None):
1358
2164
if value is None: # get
1359
return dbus.UInt64(self.interval_milliseconds())
2165
return dbus.UInt64(self.interval.total_seconds() * 1000)
1360
2166
self.interval = datetime.timedelta(0, 0, 0, value)
1361
2167
if getattr(self, "checker_initiator_tag", None) is None:
1362
2168
return
1363
# Reschedule checker run
1364
gobject.source_remove(self.checker_initiator_tag)
1365
self.checker_initiator_tag = (gobject.timeout_add
1366
(value, self.start_checker))
1367
self.start_checker() # Start one now, too
1368
2169
if self.enabled:
2170
# Reschedule checker run
2171
GLib.source_remove(self.checker_initiator_tag)
2172
self.checker_initiator_tag = GLib.timeout_add(
2173
value, self.start_checker)
2174
self.start_checker() # Start one now, too
2175
1369
2176
# Checker - property
1370
@dbus_service_property(_interface, signature="s",
2177
@dbus_service_property(_interface,
2178
signature="s",
1371
2179
access="readwrite")
1372
2180
def Checker_dbus_property(self, value=None):
1373
2181
if value is None: # get
1374
2182
return dbus.String(self.checker_command)
1375
self.checker_command = value
1376
2183
self.checker_command = str(value)
2184
1377
2185
# CheckerRunning - property
1378
@dbus_service_property(_interface, signature="b",
2186
@dbus_service_property(_interface,
2187
signature="b",
1379
2188
access="readwrite")
1380
2189
def CheckerRunning_dbus_property(self, value=None):
1381
2190
if value is None: # get
1384
2193
self.start_checker()
1385
2194
else:
1386
2195
self.stop_checker()
1387
2196
1388
2197
# ObjectPath - property
2198
@dbus_annotations(
2199
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2200
"org.freedesktop.DBus.Deprecated": "true"})
1389
2201
@dbus_service_property(_interface, signature="o", access="read")
1390
2202
def ObjectPath_dbus_property(self):
1391
return self.dbus_object_path # is already a dbus.ObjectPath
1392
2203
return self.dbus_object_path # is already a dbus.ObjectPath
2204
1393
2205
# Secret = property
1394
@dbus_service_property(_interface, signature="ay",
1395
access="write", byte_arrays=True)
2206
@dbus_annotations(
2207
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2208
"invalidates"})
2209
@dbus_service_property(_interface,
2210
signature="ay",
2211
access="write",
2212
byte_arrays=True)
1396
2213
def Secret_dbus_property(self, value):
1397
self.secret = str(value)
1398
2214
self.secret = bytes(value)
2215
1399
2216
del _interface
1400
2217
1401
2218
1402
class ProxyClient(object):
1403
def __init__(self, child_pipe, fpr, address):
2219
class ProxyClient:
2220
def __init__(self, child_pipe, key_id, fpr, address):
1404
2221
self._pipe = child_pipe
1405
self._pipe.send(('init', fpr, address))
2222
self._pipe.send(('init', key_id, fpr, address))
1406
2223
if not self._pipe.recv():
1407
raise KeyError()
1408
2224
raise KeyError(key_id or fpr)
2225
1409
2226
def __getattribute__(self, name):
1410
if(name == '_pipe'):
2227
if name == '_pipe':
1411
2228
return super(ProxyClient, self).__getattribute__(name)
1412
2229
self._pipe.send(('getattr', name))
1413
2230
data = self._pipe.recv()
1414
2231
if data[0] == 'data':
1415
2232
return data[1]
1416
2233
if data[0] == 'function':
2234
1417
2235
def func(*args, **kwargs):
1418
2236
self._pipe.send(('funcall', name, args, kwargs))
1419
2237
return self._pipe.recv()[1]
2238
1420
2239
return func
1421
2240
1422
2241
def __setattr__(self, name, value):
1423
if(name == '_pipe'):
2242
if name == '_pipe':
1424
2243
return super(ProxyClient, self).__setattr__(name, value)
1425
2244
self._pipe.send(('setattr', name, value))
1426
2245
1427
2246
1428
class ClientDBusTransitional(ClientDBus):
1429
__metaclass__ = AlternateDBusNamesMetaclass
1430
1431
1432
2247
class ClientHandler(socketserver.BaseRequestHandler, object):
1433
2248
"""A class to handle client connections.
1434
2249
1435
2250
Instantiated once for each connection to handle it.
1436
2251
Note: This will run in its own forked process."""
1437
2252
1438
2253
def handle(self):
1439
2254
with contextlib.closing(self.server.child_pipe) as child_pipe:
1440
2255
logger.info("TCP connection from: %s",
1441
unicode(self.client_address))
2256
str(self.client_address))
1442
2257
logger.debug("Pipe FD: %d",
1443
2258
self.server.child_pipe.fileno())
1444
1445
session = (gnutls.connection
1446
.ClientSession(self.request,
1447
gnutls.connection
1448
.X509Credentials()))
1449
1450
# Note: gnutls.connection.X509Credentials is really a
1451
# generic GnuTLS certificate credentials object so long as
1452
# no X.509 keys are added to it. Therefore, we can use it
1453
# here despite using OpenPGP certificates.
1454
1455
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1456
# "+AES-256-CBC", "+SHA1",
1457
# "+COMP-NULL", "+CTYPE-OPENPGP",
1458
# "+DHE-DSS"))
2259
2260
session = gnutls.ClientSession(self.request)
2261
2262
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2263
# "+AES-256-CBC", "+SHA1",
2264
# "+COMP-NULL", "+CTYPE-OPENPGP",
2265
# "+DHE-DSS"))
1459
2266
# Use a fallback default, since this MUST be set.
1460
2267
priority = self.server.gnutls_priority
1461
2268
if priority is None:
1462
2269
priority = "NORMAL"
1463
(gnutls.library.functions
1464
.gnutls_priority_set_direct(session._c_object,
1465
priority, None))
1466
2270
gnutls.priority_set_direct(session._c_object,
2271
priority.encode("utf-8"),
2272
None)
2273
1467
2274
# Start communication using the Mandos protocol
1468
2275
# Get protocol number
1469
2276
line = self.request.makefile().readline()
1470
2277
logger.debug("Protocol version: %r", line)
1471
2278
try:
1472
2279
if int(line.strip().split()[0]) > 1:
1473
raise RuntimeError
2280
raise RuntimeError(line)
1474
2281
except (ValueError, IndexError, RuntimeError) as error:
1475
2282
logger.error("Unknown protocol version: %s", error)
1476
2283
return
1477
2284
1478
2285
# Start GnuTLS connection
1479
2286
try:
1480
2287
session.handshake()
1481
except gnutls.errors.GNUTLSError as error:
2288
except gnutls.Error as error:
1482
2289
logger.warning("Handshake failed: %s", error)
1483
2290
# Do not run session.bye() here: the session is not
1484
2291
# established. Just abandon the request.
1485
2292
return
1486
2293
logger.debug("Handshake succeeded")
1487
2294
1488
2295
approval_required = False
1489
2296
try:
1490
try:
1491
fpr = self.fingerprint(self.peer_certificate
1492
(session))
1493
except (TypeError,
1494
gnutls.errors.GNUTLSError) as error:
1495
logger.warning("Bad certificate: %s", error)
1496
return
1497
logger.debug("Fingerprint: %s", fpr)
1498
if self.server.use_dbus:
1499
# Emit D-Bus signal
1500
client.NewRequest(str(self.client_address))
1501
1502
try:
1503
client = ProxyClient(child_pipe, fpr,
2297
if gnutls.has_rawpk:
2298
fpr = b""
2299
try:
2300
key_id = self.key_id(
2301
self.peer_certificate(session))
2302
except (TypeError, gnutls.Error) as error:
2303
logger.warning("Bad certificate: %s", error)
2304
return
2305
logger.debug("Key ID: %s", key_id)
2306
2307
else:
2308
key_id = b""
2309
try:
2310
fpr = self.fingerprint(
2311
self.peer_certificate(session))
2312
except (TypeError, gnutls.Error) as error:
2313
logger.warning("Bad certificate: %s", error)
2314
return
2315
logger.debug("Fingerprint: %s", fpr)
2316
2317
try:
2318
client = ProxyClient(child_pipe, key_id, fpr,
1504
2319
self.client_address)
1505
2320
except KeyError:
1506
2321
return
1507
2322
1508
2323
if client.approval_delay:
1509
2324
delay = client.approval_delay
1510
2325
client.approvals_pending += 1
1511
2326
approval_required = True
1512
2327
1513
2328
while True:
1514
2329
if not client.enabled:
1515
2330
logger.info("Client %s is disabled",
1516
client.name)
2331
client.name)
1517
2332
if self.server.use_dbus:
1518
2333
# Emit D-Bus signal
1519
2334
client.Rejected("Disabled")
1520
2335
return
1521
1522
if client._approved or not client.approval_delay:
1523
#We are approved or approval is disabled
2336
2337
if client.approved or not client.approval_delay:
2338
# We are approved or approval is disabled
1524
2339
break
1525
elif client._approved is None:
2340
elif client.approved is None:
1526
2341
logger.info("Client %s needs approval",
1527
2342
client.name)
1528
2343
if self.server.use_dbus:
1529
2344
# Emit D-Bus signal
1530
2345
client.NeedApproval(
1531
client.approval_delay_milliseconds(),
1532
client.approved_by_default)
2346
client.approval_delay.total_seconds()
2347
* 1000, client.approved_by_default)
1533
2348
else:
1534
2349
logger.warning("Client %s was not approved",
1535
2350
client.name)
1537
2352
# Emit D-Bus signal
1538
2353
client.Rejected("Denied")
1539
2354
return
1540
1541
#wait until timeout or approved
2355
2356
# wait until timeout or approved
1542
2357
time = datetime.datetime.now()
1543
2358
client.changedstate.acquire()
1544
(client.changedstate.wait
1545
(float(client._timedelta_to_milliseconds(delay)
1546
/ 1000)))
2359
client.changedstate.wait(delay.total_seconds())
1547
2360
client.changedstate.release()
1548
2361
time2 = datetime.datetime.now()
1549
2362
if (time2 - time) >= delay:
1559
2372
break
1560
2373
else:
1561
2374
delay -= time2 - time
1562
1563
sent_size = 0
1564
while sent_size < len(client.secret):
1565
try:
1566
sent = session.send(client.secret[sent_size:])
1567
except gnutls.errors.GNUTLSError as error:
1568
logger.warning("gnutls send failed")
1569
return
1570
logger.debug("Sent: %d, remaining: %d",
1571
sent, len(client.secret)
1572
- (sent_size + sent))
1573
sent_size += sent
1574
2375
2376
try:
2377
session.send(client.secret)
2378
except gnutls.Error as error:
2379
logger.warning("gnutls send failed",
2380
exc_info=error)
2381
return
2382
1575
2383
logger.info("Sending secret to %s", client.name)
1576
2384
# bump the timeout using extended_timeout
1577
client.checked_ok(client.extended_timeout)
2385
client.bump_timeout(client.extended_timeout)
1578
2386
if self.server.use_dbus:
1579
2387
# Emit D-Bus signal
1580
2388
client.GotSecret()
1581
2389
1582
2390
finally:
1583
2391
if approval_required:
1584
2392
client.approvals_pending -= 1
1585
2393
try:
1586
2394
session.bye()
1587
except gnutls.errors.GNUTLSError as error:
1588
logger.warning("GnuTLS bye failed")
1589
2395
except gnutls.Error as error:
2396
logger.warning("GnuTLS bye failed",
2397
exc_info=error)
2398
1590
2399
@staticmethod
1591
2400
def peer_certificate(session):
1592
"Return the peer's OpenPGP certificate as a bytestring"
1593
# If not an OpenPGP certificate...
1594
if (gnutls.library.functions
1595
.gnutls_certificate_type_get(session._c_object)
1596
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1597
# ...do the normal thing
1598
return session.peer_certificate
2401
"Return the peer's certificate as a bytestring"
2402
try:
2403
cert_type = gnutls.certificate_type_get2(session._c_object,
2404
gnutls.CTYPE_PEERS)
2405
except AttributeError:
2406
cert_type = gnutls.certificate_type_get(session._c_object)
2407
if gnutls.has_rawpk:
2408
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2409
else:
2410
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2411
# If not a valid certificate type...
2412
if cert_type not in valid_cert_types:
2413
logger.info("Cert type %r not in %r", cert_type,
2414
valid_cert_types)
2415
# ...return invalid data
2416
return b""
1599
2417
list_size = ctypes.c_uint(1)
1600
cert_list = (gnutls.library.functions
1601
.gnutls_certificate_get_peers
2418
cert_list = (gnutls.certificate_get_peers
1602
2419
(session._c_object, ctypes.byref(list_size)))
1603
2420
if not bool(cert_list) and list_size.value != 0:
1604
raise gnutls.errors.GNUTLSError("error getting peer"
1605
" certificate")
2421
raise gnutls.Error("error getting peer certificate")
1606
2422
if list_size.value == 0:
1607
2423
return None
1608
2424
cert = cert_list[0]
1609
2425
return ctypes.string_at(cert.data, cert.size)
1610
2426
2427
@staticmethod
2428
def key_id(certificate):
2429
"Convert a certificate bytestring to a hexdigit key ID"
2430
# New GnuTLS "datum" with the public key
2431
datum = gnutls.datum_t(
2432
ctypes.cast(ctypes.c_char_p(certificate),
2433
ctypes.POINTER(ctypes.c_ubyte)),
2434
ctypes.c_uint(len(certificate)))
2435
# XXX all these need to be created in the gnutls "module"
2436
# New empty GnuTLS certificate
2437
pubkey = gnutls.pubkey_t()
2438
gnutls.pubkey_init(ctypes.byref(pubkey))
2439
# Import the raw public key into the certificate
2440
gnutls.pubkey_import(pubkey,
2441
ctypes.byref(datum),
2442
gnutls.X509_FMT_DER)
2443
# New buffer for the key ID
2444
buf = ctypes.create_string_buffer(32)
2445
buf_len = ctypes.c_size_t(len(buf))
2446
# Get the key ID from the raw public key into the buffer
2447
gnutls.pubkey_get_key_id(pubkey,
2448
gnutls.KEYID_USE_SHA256,
2449
ctypes.cast(ctypes.byref(buf),
2450
ctypes.POINTER(ctypes.c_ubyte)),
2451
ctypes.byref(buf_len))
2452
# Deinit the certificate
2453
gnutls.pubkey_deinit(pubkey)
2454
2455
# Convert the buffer to a Python bytestring
2456
key_id = ctypes.string_at(buf, buf_len.value)
2457
# Convert the bytestring to hexadecimal notation
2458
hex_key_id = binascii.hexlify(key_id).upper()
2459
return hex_key_id
2460
1611
2461
@staticmethod
1612
2462
def fingerprint(openpgp):
1613
2463
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1614
2464
# New GnuTLS "datum" with the OpenPGP public key
1615
datum = (gnutls.library.types
1616
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1617
ctypes.POINTER
1618
(ctypes.c_ubyte)),
1619
ctypes.c_uint(len(openpgp))))
2465
datum = gnutls.datum_t(
2466
ctypes.cast(ctypes.c_char_p(openpgp),
2467
ctypes.POINTER(ctypes.c_ubyte)),
2468
ctypes.c_uint(len(openpgp)))
1620
2469
# New empty GnuTLS certificate
1621
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1622
(gnutls.library.functions
1623
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2470
crt = gnutls.openpgp_crt_t()
2471
gnutls.openpgp_crt_init(ctypes.byref(crt))
1624
2472
# Import the OpenPGP public key into the certificate
1625
(gnutls.library.functions
1626
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1627
gnutls.library.constants
1628
.GNUTLS_OPENPGP_FMT_RAW))
2473
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2474
gnutls.OPENPGP_FMT_RAW)
1629
2475
# Verify the self signature in the key
1630
2476
crtverify = ctypes.c_uint()
1631
(gnutls.library.functions
1632
.gnutls_openpgp_crt_verify_self(crt, 0,
1633
ctypes.byref(crtverify)))
2477
gnutls.openpgp_crt_verify_self(crt, 0,
2478
ctypes.byref(crtverify))
1634
2479
if crtverify.value != 0:
1635
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1636
raise (gnutls.errors.CertificateSecurityError
1637
("Verify failed"))
2480
gnutls.openpgp_crt_deinit(crt)
2481
raise gnutls.CertificateSecurityError(code
2482
=crtverify.value)
1638
2483
# New buffer for the fingerprint
1639
2484
buf = ctypes.create_string_buffer(20)
1640
2485
buf_len = ctypes.c_size_t()
1641
2486
# Get the fingerprint from the certificate into the buffer
1642
(gnutls.library.functions
1643
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1644
ctypes.byref(buf_len)))
2487
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2488
ctypes.byref(buf_len))
1645
2489
# Deinit the certificate
1646
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2490
gnutls.openpgp_crt_deinit(crt)
1647
2491
# Convert the buffer to a Python bytestring
1648
2492
fpr = ctypes.string_at(buf, buf_len.value)
1649
2493
# Convert the bytestring to hexadecimal notation
1651
2495
return hex_fpr
1652
2496
1653
2497
1654
class MultiprocessingMixIn(object):
2498
class MultiprocessingMixIn:
1655
2499
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2500
1656
2501
def sub_process_main(self, request, address):
1657
2502
try:
1658
2503
self.finish_request(request, address)
1659
except:
2504
except Exception:
1660
2505
self.handle_error(request, address)
1661
2506
self.close_request(request)
1662
2507
1663
2508
def process_request(self, request, address):
1664
2509
"""Start a new process to process the request."""
1665
proc = multiprocessing.Process(target = self.sub_process_main,
1666
args = (request,
1667
address))
2510
proc = multiprocessing.Process(target=self.sub_process_main,
2511
args=(request, address))
1668
2512
proc.start()
1669
2513
return proc
1670
2514
1671
2515
1672
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2516
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1673
2517
""" adds a pipe to the MixIn """
2518
1674
2519
def process_request(self, request, client_address):
1675
2520
"""Overrides and wraps the original process_request().
1676
2521
1677
2522
This function creates a new pipe in self.pipe
1678
2523
"""
1679
2524
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1680
2525
1681
2526
proc = MultiprocessingMixIn.process_request(self, request,
1682
2527
client_address)
1683
2528
self.child_pipe.close()
1684
2529
self.add_pipe(parent_pipe, proc)
1685
2530
1686
2531
def add_pipe(self, parent_pipe, proc):
1687
2532
"""Dummy function; override as necessary"""
1688
raise NotImplementedError
2533
raise NotImplementedError()
1689
2534
1690
2535
1691
2536
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1692
socketserver.TCPServer, object):
2537
socketserver.TCPServer):
1693
2538
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1694
2539
1695
2540
Attributes:
1696
2541
enabled: Boolean; whether this server is activated yet
1697
2542
interface: None or a network interface name (string)
1698
2543
use_ipv6: Boolean; to use IPv6 or not
1699
2544
"""
2545
1700
2546
def __init__(self, server_address, RequestHandlerClass,
1701
interface=None, use_ipv6=True):
2547
interface=None,
2548
use_ipv6=True,
2549
socketfd=None):
2550
"""If socketfd is set, use that file descriptor instead of
2551
creating a new one with socket.socket().
2552
"""
1702
2553
self.interface = interface
1703
2554
if use_ipv6:
1704
2555
self.address_family = socket.AF_INET6
2556
if socketfd is not None:
2557
# Save the file descriptor
2558
self.socketfd = socketfd
2559
# Save the original socket.socket() function
2560
self.socket_socket = socket.socket
2561
2562
# To implement --socket, we monkey patch socket.socket.
2563
#
2564
# (When socketserver.TCPServer is a new-style class, we
2565
# could make self.socket into a property instead of monkey
2566
# patching socket.socket.)
2567
#
2568
# Create a one-time-only replacement for socket.socket()
2569
@functools.wraps(socket.socket)
2570
def socket_wrapper(*args, **kwargs):
2571
# Restore original function so subsequent calls are
2572
# not affected.
2573
socket.socket = self.socket_socket
2574
del self.socket_socket
2575
# This time only, return a new socket object from the
2576
# saved file descriptor.
2577
return socket.fromfd(self.socketfd, *args, **kwargs)
2578
# Replace socket.socket() function with wrapper
2579
socket.socket = socket_wrapper
2580
# The socketserver.TCPServer.__init__ will call
2581
# socket.socket(), which might be our replacement,
2582
# socket_wrapper(), if socketfd was set.
1705
2583
socketserver.TCPServer.__init__(self, server_address,
1706
2584
RequestHandlerClass)
2585
1707
2586
def server_bind(self):
1708
2587
"""This overrides the normal server_bind() function
1709
2588
to bind to an interface if one was specified, and also NOT to
1710
2589
bind to an address or port if they were not specified."""
2590
global SO_BINDTODEVICE
1711
2591
if self.interface is not None:
1712
2592
if SO_BINDTODEVICE is None:
1713
logger.error("SO_BINDTODEVICE does not exist;"
1714
" cannot bind to interface %s",
1715
self.interface)
1716
else:
1717
try:
1718
self.socket.setsockopt(socket.SOL_SOCKET,
1719
SO_BINDTODEVICE,
1720
str(self.interface
1721
+ '\0'))
1722
except socket.error as error:
1723
if error[0] == errno.EPERM:
1724
logger.error("No permission to"
1725
" bind to interface %s",
1726
self.interface)
1727
elif error[0] == errno.ENOPROTOOPT:
1728
logger.error("SO_BINDTODEVICE not available;"
1729
" cannot bind to interface %s",
1730
self.interface)
1731
else:
1732
raise
2593
# Fall back to a hard-coded value which seems to be
2594
# common enough.
2595
logger.warning("SO_BINDTODEVICE not found, trying 25")
2596
SO_BINDTODEVICE = 25
2597
try:
2598
self.socket.setsockopt(
2599
socket.SOL_SOCKET, SO_BINDTODEVICE,
2600
(self.interface + "\0").encode("utf-8"))
2601
except socket.error as error:
2602
if error.errno == errno.EPERM:
2603
logger.error("No permission to bind to"
2604
" interface %s", self.interface)
2605
elif error.errno == errno.ENOPROTOOPT:
2606
logger.error("SO_BINDTODEVICE not available;"
2607
" cannot bind to interface %s",
2608
self.interface)
2609
elif error.errno == errno.ENODEV:
2610
logger.error("Interface %s does not exist,"
2611
" cannot bind", self.interface)
2612
else:
2613
raise
1733
2614
# Only bind(2) the socket if we really need to.
1734
2615
if self.server_address[0] or self.server_address[1]:
2616
if self.server_address[1]:
2617
self.allow_reuse_address = True
1735
2618
if not self.server_address[0]:
1736
2619
if self.address_family == socket.AF_INET6:
1737
any_address = "::" # in6addr_any
2620
any_address = "::" # in6addr_any
1738
2621
else:
1739
any_address = socket.INADDR_ANY
2622
any_address = "0.0.0.0" # INADDR_ANY
1740
2623
self.server_address = (any_address,
1741
2624
self.server_address[1])
1742
2625
elif not self.server_address[1]:
1743
self.server_address = (self.server_address[0],
1744
0)
2626
self.server_address = (self.server_address[0], 0)
1745
2627
# if self.interface:
1746
2628
# self.server_address = (self.server_address[0],
1747
2629
# 0, # port
1753
2635
1754
2636
class MandosServer(IPv6_TCPServer):
1755
2637
"""Mandos server.
1756
2638
1757
2639
Attributes:
1758
2640
clients: set of Client objects
1759
2641
gnutls_priority GnuTLS priority string
1760
2642
use_dbus: Boolean; to emit D-Bus signals or not
1761
1762
Assumes a gobject.MainLoop event loop.
2643
2644
Assumes a GLib.MainLoop event loop.
1763
2645
"""
2646
1764
2647
def __init__(self, server_address, RequestHandlerClass,
1765
interface=None, use_ipv6=True, clients=None,
1766
gnutls_priority=None, use_dbus=True):
2648
interface=None,
2649
use_ipv6=True,
2650
clients=None,
2651
gnutls_priority=None,
2652
use_dbus=True,
2653
socketfd=None):
1767
2654
self.enabled = False
1768
2655
self.clients = clients
1769
2656
if self.clients is None:
1772
2659
self.gnutls_priority = gnutls_priority
1773
2660
IPv6_TCPServer.__init__(self, server_address,
1774
2661
RequestHandlerClass,
1775
interface = interface,
1776
use_ipv6 = use_ipv6)
2662
interface=interface,
2663
use_ipv6=use_ipv6,
2664
socketfd=socketfd)
2665
1777
2666
def server_activate(self):
1778
2667
if self.enabled:
1779
2668
return socketserver.TCPServer.server_activate(self)
1780
2669
1781
2670
def enable(self):
1782
2671
self.enabled = True
1783
2672
1784
2673
def add_pipe(self, parent_pipe, proc):
1785
2674
# Call "handle_ipc" for both data and EOF events
1786
gobject.io_add_watch(parent_pipe.fileno(),
1787
gobject.IO_IN | gobject.IO_HUP,
1788
functools.partial(self.handle_ipc,
1789
parent_pipe =
1790
parent_pipe,
1791
proc = proc))
1792
1793
def handle_ipc(self, source, condition, parent_pipe=None,
1794
proc = None, client_object=None):
1795
condition_names = {
1796
gobject.IO_IN: "IN", # There is data to read.
1797
gobject.IO_OUT: "OUT", # Data can be written (without
1798
# blocking).
1799
gobject.IO_PRI: "PRI", # There is urgent data to read.
1800
gobject.IO_ERR: "ERR", # Error condition.
1801
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1802
# broken, usually for pipes and
1803
# sockets).
1804
}
1805
conditions_string = ' | '.join(name
1806
for cond, name in
1807
condition_names.iteritems()
1808
if cond & condition)
2675
GLib.io_add_watch(
2676
parent_pipe.fileno(),
2677
GLib.IO_IN | GLib.IO_HUP,
2678
functools.partial(self.handle_ipc,
2679
parent_pipe=parent_pipe,
2680
proc=proc))
2681
2682
def handle_ipc(self, source, condition,
2683
parent_pipe=None,
2684
proc=None,
2685
client_object=None):
1809
2686
# error, or the other end of multiprocessing.Pipe has closed
1810
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2687
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1811
2688
# Wait for other process to exit
1812
2689
proc.join()
1813
2690
return False
1814
2691
1815
2692
# Read a request from the child
1816
2693
request = parent_pipe.recv()
1817
2694
command = request[0]
1818
2695
1819
2696
if command == 'init':
1820
fpr = request[1]
1821
address = request[2]
1822
1823
for c in self.clients.itervalues():
1824
if c.fingerprint == fpr:
2697
key_id = request[1].decode("ascii")
2698
fpr = request[2].decode("ascii")
2699
address = request[3]
2700
2701
for c in self.clients.values():
2702
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2703
continue
2704
if key_id and c.key_id == key_id:
2705
client = c
2706
break
2707
if fpr and c.fingerprint == fpr:
1825
2708
client = c
1826
2709
break
1827
2710
else:
1828
logger.info("Client not found for fingerprint: %s, ad"
1829
"dress: %s", fpr, address)
2711
logger.info("Client not found for key ID: %s, address"
2712
": %s", key_id or fpr, address)
1830
2713
if self.use_dbus:
1831
2714
# Emit D-Bus signal
1832
mandos_dbus_service.ClientNotFound(fpr,
2715
mandos_dbus_service.ClientNotFound(key_id or fpr,
1833
2716
address[0])
1834
2717
parent_pipe.send(False)
1835
2718
return False
1836
1837
gobject.io_add_watch(parent_pipe.fileno(),
1838
gobject.IO_IN | gobject.IO_HUP,
1839
functools.partial(self.handle_ipc,
1840
parent_pipe =
1841
parent_pipe,
1842
proc = proc,
1843
client_object =
1844
client))
2719
2720
GLib.io_add_watch(
2721
parent_pipe.fileno(),
2722
GLib.IO_IN | GLib.IO_HUP,
2723
functools.partial(self.handle_ipc,
2724
parent_pipe=parent_pipe,
2725
proc=proc,
2726
client_object=client))
1845
2727
parent_pipe.send(True)
1846
2728
# remove the old hook in favor of the new above hook on
1847
2729
# same fileno
1850
2732
funcname = request[1]
1851
2733
args = request[2]
1852
2734
kwargs = request[3]
1853
2735
1854
2736
parent_pipe.send(('data', getattr(client_object,
1855
2737
funcname)(*args,
1856
**kwargs)))
1857
2738
**kwargs)))
2739
1858
2740
if command == 'getattr':
1859
2741
attrname = request[1]
1860
if callable(client_object.__getattribute__(attrname)):
1861
parent_pipe.send(('function',))
2742
if isinstance(client_object.__getattribute__(attrname),
2743
collections.Callable):
2744
parent_pipe.send(('function', ))
1862
2745
else:
1863
parent_pipe.send(('data', client_object
1864
.__getattribute__(attrname)))
1865
2746
parent_pipe.send((
2747
'data', client_object.__getattribute__(attrname)))
2748
1866
2749
if command == 'setattr':
1867
2750
attrname = request[1]
1868
2751
value = request[2]
1869
2752
setattr(client_object, attrname, value)
1870
2753
1871
2754
return True
1872
2755
1873
2756
2757
def rfc3339_duration_to_delta(duration):
2758
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2759
2760
>>> rfc3339_duration_to_delta("P7D")
2761
datetime.timedelta(7)
2762
>>> rfc3339_duration_to_delta("PT60S")
2763
datetime.timedelta(0, 60)
2764
>>> rfc3339_duration_to_delta("PT60M")
2765
datetime.timedelta(0, 3600)
2766
>>> rfc3339_duration_to_delta("PT24H")
2767
datetime.timedelta(1)
2768
>>> rfc3339_duration_to_delta("P1W")
2769
datetime.timedelta(7)
2770
>>> rfc3339_duration_to_delta("PT5M30S")
2771
datetime.timedelta(0, 330)
2772
>>> rfc3339_duration_to_delta("P1DT3M20S")
2773
datetime.timedelta(1, 200)
2774
"""
2775
2776
# Parsing an RFC 3339 duration with regular expressions is not
2777
# possible - there would have to be multiple places for the same
2778
# values, like seconds. The current code, while more esoteric, is
2779
# cleaner without depending on a parsing library. If Python had a
2780
# built-in library for parsing we would use it, but we'd like to
2781
# avoid excessive use of external libraries.
2782
2783
# New type for defining tokens, syntax, and semantics all-in-one
2784
Token = collections.namedtuple("Token", (
2785
"regexp", # To match token; if "value" is not None, must have
2786
# a "group" containing digits
2787
"value", # datetime.timedelta or None
2788
"followers")) # Tokens valid after this token
2789
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2790
# the "duration" ABNF definition in RFC 3339, Appendix A.
2791
token_end = Token(re.compile(r"$"), None, frozenset())
2792
token_second = Token(re.compile(r"(\d+)S"),
2793
datetime.timedelta(seconds=1),
2794
frozenset((token_end, )))
2795
token_minute = Token(re.compile(r"(\d+)M"),
2796
datetime.timedelta(minutes=1),
2797
frozenset((token_second, token_end)))
2798
token_hour = Token(re.compile(r"(\d+)H"),
2799
datetime.timedelta(hours=1),
2800
frozenset((token_minute, token_end)))
2801
token_time = Token(re.compile(r"T"),
2802
None,
2803
frozenset((token_hour, token_minute,
2804
token_second)))
2805
token_day = Token(re.compile(r"(\d+)D"),
2806
datetime.timedelta(days=1),
2807
frozenset((token_time, token_end)))
2808
token_month = Token(re.compile(r"(\d+)M"),
2809
datetime.timedelta(weeks=4),
2810
frozenset((token_day, token_end)))
2811
token_year = Token(re.compile(r"(\d+)Y"),
2812
datetime.timedelta(weeks=52),
2813
frozenset((token_month, token_end)))
2814
token_week = Token(re.compile(r"(\d+)W"),
2815
datetime.timedelta(weeks=1),
2816
frozenset((token_end, )))
2817
token_duration = Token(re.compile(r"P"), None,
2818
frozenset((token_year, token_month,
2819
token_day, token_time,
2820
token_week)))
2821
# Define starting values:
2822
# Value so far
2823
value = datetime.timedelta()
2824
found_token = None
2825
# Following valid tokens
2826
followers = frozenset((token_duration, ))
2827
# String left to parse
2828
s = duration
2829
# Loop until end token is found
2830
while found_token is not token_end:
2831
# Search for any currently valid tokens
2832
for token in followers:
2833
match = token.regexp.match(s)
2834
if match is not None:
2835
# Token found
2836
if token.value is not None:
2837
# Value found, parse digits
2838
factor = int(match.group(1), 10)
2839
# Add to value so far
2840
value += factor * token.value
2841
# Strip token from string
2842
s = token.regexp.sub("", s, 1)
2843
# Go to found token
2844
found_token = token
2845
# Set valid next tokens
2846
followers = found_token.followers
2847
break
2848
else:
2849
# No currently valid tokens were found
2850
raise ValueError("Invalid RFC 3339 duration: {!r}"
2851
.format(duration))
2852
# End token found
2853
return value
2854
2855
1874
2856
def string_to_delta(interval):
1875
2857
"""Parse a string and return a datetime.timedelta
1876
2858
1877
2859
>>> string_to_delta('7d')
1878
2860
datetime.timedelta(7)
1879
2861
>>> string_to_delta('60s')
1887
2869
>>> string_to_delta('5m 30s')
1888
2870
datetime.timedelta(0, 330)
1889
2871
"""
2872
2873
try:
2874
return rfc3339_duration_to_delta(interval)
2875
except ValueError:
2876
pass
2877
1890
2878
timevalue = datetime.timedelta(0)
1891
2879
for s in interval.split():
1892
2880
try:
1893
suffix = unicode(s[-1])
2881
suffix = s[-1]
1894
2882
value = int(s[:-1])
1895
2883
if suffix == "d":
1896
2884
delta = datetime.timedelta(value)
1903
2891
elif suffix == "w":
1904
2892
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1905
2893
else:
1906
raise ValueError("Unknown suffix %r" % suffix)
1907
except (ValueError, IndexError) as e:
2894
raise ValueError("Unknown suffix {!r}".format(suffix))
2895
except IndexError as e:
1908
2896
raise ValueError(*(e.args))
1909
2897
timevalue += delta
1910
2898
return timevalue
1911
2899
1912
2900
1913
def daemon(nochdir = False, noclose = False):
2901
def daemon(nochdir=False, noclose=False):
1914
2902
"""See daemon(3). Standard BSD Unix function.
1915
2903
1916
2904
This should really exist as os.daemon, but it doesn't (yet)."""
1917
2905
if os.fork():
1918
2906
sys.exit()
1923
2911
sys.exit()
1924
2912
if not noclose:
1925
2913
# Close all standard open file descriptors
1926
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2914
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1927
2915
if not stat.S_ISCHR(os.fstat(null).st_mode):
1928
2916
raise OSError(errno.ENODEV,
1929
"%s not a character device"
1930
% os.path.devnull)
2917
"{} not a character device"
2918
.format(os.devnull))
1931
2919
os.dup2(null, sys.stdin.fileno())
1932
2920
os.dup2(null, sys.stdout.fileno())
1933
2921
os.dup2(null, sys.stderr.fileno())
1936
2924
1937
2925
1938
2926
def main():
1939
2927
1940
2928
##################################################################
1941
2929
# Parsing of options, both command line and config file
1942
2930
1943
2931
parser = argparse.ArgumentParser()
1944
2932
parser.add_argument("-v", "--version", action="version",
1945
version = "%%(prog)s %s" % version,
2933
version="%(prog)s {}".format(version),
1946
2934
help="show version number and exit")
1947
2935
parser.add_argument("-i", "--interface", metavar="IF",
1948
2936
help="Bind to interface IF")
1954
2942
help="Run self-test")
1955
2943
parser.add_argument("--debug", action="store_true",
1956
2944
help="Debug mode; run in foreground and log"
1957
" to terminal")
2945
" to terminal", default=None)
1958
2946
parser.add_argument("--debuglevel", metavar="LEVEL",
1959
2947
help="Debug level for stdout output")
1960
2948
parser.add_argument("--priority", help="GnuTLS"
1967
2955
" files")
1968
2956
parser.add_argument("--no-dbus", action="store_false",
1969
2957
dest="use_dbus", help="Do not provide D-Bus"
1970
" system bus interface")
2958
" system bus interface", default=None)
1971
2959
parser.add_argument("--no-ipv6", action="store_false",
1972
dest="use_ipv6", help="Do not use IPv6")
2960
dest="use_ipv6", help="Do not use IPv6",
2961
default=None)
1973
2962
parser.add_argument("--no-restore", action="store_false",
1974
2963
dest="restore", help="Do not restore stored"
1975
" state", default=True)
1976
2964
" state", default=None)
2965
parser.add_argument("--socket", type=int,
2966
help="Specify a file descriptor to a network"
2967
" socket to use instead of creating one")
2968
parser.add_argument("--statedir", metavar="DIR",
2969
help="Directory to save/restore state in")
2970
parser.add_argument("--foreground", action="store_true",
2971
help="Run in foreground", default=None)
2972
parser.add_argument("--no-zeroconf", action="store_false",
2973
dest="zeroconf", help="Do not use Zeroconf",
2974
default=None)
2975
1977
2976
options = parser.parse_args()
1978
2977
1979
2978
if options.check:
1980
2979
import doctest
1981
doctest.testmod()
1982
sys.exit()
1983
2980
fail_count, test_count = doctest.testmod()
2981
sys.exit(os.EX_OK if fail_count == 0 else 1)
2982
1984
2983
# Default values for config file for server-global settings
1985
server_defaults = { "interface": "",
1986
"address": "",
1987
"port": "",
1988
"debug": "False",
1989
"priority":
1990
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1991
"servicename": "Mandos",
1992
"use_dbus": "True",
1993
"use_ipv6": "True",
1994
"debuglevel": "",
1995
}
1996
2984
if gnutls.has_rawpk:
2985
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2986
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2987
else:
2988
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2989
":+SIGN-DSA-SHA256")
2990
server_defaults = {"interface": "",
2991
"address": "",
2992
"port": "",
2993
"debug": "False",
2994
"priority": priority,
2995
"servicename": "Mandos",
2996
"use_dbus": "True",
2997
"use_ipv6": "True",
2998
"debuglevel": "",
2999
"restore": "True",
3000
"socket": "",
3001
"statedir": "/var/lib/mandos",
3002
"foreground": "False",
3003
"zeroconf": "True",
3004
}
3005
del priority
3006
1997
3007
# Parse config file for server-global settings
1998
server_config = configparser.SafeConfigParser(server_defaults)
3008
server_config = configparser.ConfigParser(server_defaults)
1999
3009
del server_defaults
2000
server_config.read(os.path.join(options.configdir,
2001
"mandos.conf"))
2002
# Convert the SafeConfigParser object to a dict
3010
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3011
# Convert the ConfigParser object to a dict
2003
3012
server_settings = server_config.defaults()
2004
3013
# Use the appropriate methods on the non-string config options
2005
for option in ("debug", "use_dbus", "use_ipv6"):
3014
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3015
"foreground", "zeroconf"):
2006
3016
server_settings[option] = server_config.getboolean("DEFAULT",
2007
3017
option)
2008
3018
if server_settings["port"]:
2009
3019
server_settings["port"] = server_config.getint("DEFAULT",
2010
3020
"port")
3021
if server_settings["socket"]:
3022
server_settings["socket"] = server_config.getint("DEFAULT",
3023
"socket")
3024
# Later, stdin will, and stdout and stderr might, be dup'ed
3025
# over with an opened os.devnull. But we don't want this to
3026
# happen with a supplied network socket.
3027
if 0 <= server_settings["socket"] <= 2:
3028
server_settings["socket"] = os.dup(server_settings
3029
["socket"])
2011
3030
del server_config
2012
3031
2013
3032
# Override the settings from the config file with command line
2014
3033
# options, if set.
2015
3034
for option in ("interface", "address", "port", "debug",
2016
"priority", "servicename", "configdir",
2017
"use_dbus", "use_ipv6", "debuglevel", "restore"):
3035
"priority", "servicename", "configdir", "use_dbus",
3036
"use_ipv6", "debuglevel", "restore", "statedir",
3037
"socket", "foreground", "zeroconf"):
2018
3038
value = getattr(options, option)
2019
3039
if value is not None:
2020
3040
server_settings[option] = value
2021
3041
del options
2022
3042
# Force all strings to be unicode
2023
3043
for option in server_settings.keys():
2024
if type(server_settings[option]) is str:
2025
server_settings[option] = unicode(server_settings[option])
3044
if isinstance(server_settings[option], bytes):
3045
server_settings[option] = (server_settings[option]
3046
.decode("utf-8"))
3047
# Force all boolean options to be boolean
3048
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3049
"foreground", "zeroconf"):
3050
server_settings[option] = bool(server_settings[option])
3051
# Debug implies foreground
3052
if server_settings["debug"]:
3053
server_settings["foreground"] = True
2026
3054
# Now we have our good server settings in "server_settings"
2027
3055
2028
3056
##################################################################
2029
3057
3058
if (not server_settings["zeroconf"]
3059
and not (server_settings["port"]
3060
or server_settings["socket"] != "")):
3061
parser.error("Needs port or socket to work without Zeroconf")
3062
2030
3063
# For convenience
2031
3064
debug = server_settings["debug"]
2032
3065
debuglevel = server_settings["debuglevel"]
2033
3066
use_dbus = server_settings["use_dbus"]
2034
3067
use_ipv6 = server_settings["use_ipv6"]
2035
3068
stored_state_path = os.path.join(server_settings["statedir"],
3069
stored_state_file)
3070
foreground = server_settings["foreground"]
3071
zeroconf = server_settings["zeroconf"]
3072
2036
3073
if debug:
2037
initlogger(logging.DEBUG)
3074
initlogger(debug, logging.DEBUG)
2038
3075
else:
2039
3076
if not debuglevel:
2040
initlogger()
3077
initlogger(debug)
2041
3078
else:
2042
3079
level = getattr(logging, debuglevel.upper())
2043
initlogger(level)
2044
3080
initlogger(debug, level)
3081
2045
3082
if server_settings["servicename"] != "Mandos":
2046
syslogger.setFormatter(logging.Formatter
2047
('Mandos (%s) [%%(process)d]:'
2048
' %%(levelname)s: %%(message)s'
2049
% server_settings["servicename"]))
2050
3083
syslogger.setFormatter(
3084
logging.Formatter('Mandos ({}) [%(process)d]:'
3085
' %(levelname)s: %(message)s'.format(
3086
server_settings["servicename"])))
3087
2051
3088
# Parse config file with clients
2052
client_defaults = { "timeout": "5m",
2053
"extended_timeout": "15m",
2054
"interval": "2m",
2055
"checker": "fping -q -- %%(host)s",
2056
"host": "",
2057
"approval_delay": "0s",
2058
"approval_duration": "1s",
2059
}
2060
client_config = configparser.SafeConfigParser(client_defaults)
3089
client_config = configparser.ConfigParser(Client.client_defaults)
2061
3090
client_config.read(os.path.join(server_settings["configdir"],
2062
3091
"clients.conf"))
2063
3092
2064
3093
global mandos_dbus_service
2065
3094
mandos_dbus_service = None
2066
2067
tcp_server = MandosServer((server_settings["address"],
2068
server_settings["port"]),
2069
ClientHandler,
2070
interface=(server_settings["interface"]
2071
or None),
2072
use_ipv6=use_ipv6,
2073
gnutls_priority=
2074
server_settings["priority"],
2075
use_dbus=use_dbus)
2076
if not debug:
2077
pidfilename = "/var/run/mandos.pid"
2078
try:
2079
pidfile = open(pidfilename, "w")
2080
except IOError:
2081
logger.error("Could not open file %r", pidfilename)
2082
2083
try:
2084
uid = pwd.getpwnam("_mandos").pw_uid
2085
gid = pwd.getpwnam("_mandos").pw_gid
2086
except KeyError:
2087
try:
2088
uid = pwd.getpwnam("mandos").pw_uid
2089
gid = pwd.getpwnam("mandos").pw_gid
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
2090
3125
except KeyError:
2091
try:
2092
uid = pwd.getpwnam("nobody").pw_uid
2093
gid = pwd.getpwnam("nobody").pw_gid
2094
except KeyError:
2095
uid = 65534
2096
gid = 65534
3126
continue
3127
else:
3128
uid = 65534
3129
gid = 65534
2097
3130
try:
2098
3131
os.setgid(gid)
2099
3132
os.setuid(uid)
3133
if debug:
3134
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3135
gid))
2100
3136
except OSError as error:
2101
if error[0] != errno.EPERM:
2102
raise error
2103
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
2104
3142
if debug:
2105
3143
# Enable all possible GnuTLS debugging
2106
3144
2107
3145
# "Use a log level over 10 to enable all debugging options."
2108
3146
# - GnuTLS manual
2109
gnutls.library.functions.gnutls_global_set_log_level(11)
2110
2111
@gnutls.library.types.gnutls_log_func
3147
gnutls.global_set_log_level(11)
3148
3149
@gnutls.log_func
2112
3150
def debug_gnutls(level, string):
2113
3151
logger.debug("GnuTLS: %s", string[:-1])
2114
2115
(gnutls.library.functions
2116
.gnutls_global_set_log_function(debug_gnutls))
2117
3152
3153
gnutls.global_set_log_function(debug_gnutls)
3154
2118
3155
# Redirect stdin so all checkers get /dev/null
2119
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3156
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2120
3157
os.dup2(null, sys.stdin.fileno())
2121
3158
if null > 2:
2122
3159
os.close(null)
2123
else:
2124
# No console logging
2125
logger.removeHandler(console)
2126
3160
2127
3161
# Need to fork before connecting to D-Bus
2128
if not debug:
3162
if not foreground:
2129
3163
# Close all input and output, do double fork, etc.
2130
3164
daemon()
2131
3165
3166
if gi.version_info < (3, 10, 2):
3167
# multiprocessing will use threads, so before we use GLib we
3168
# need to inform GLib that threads will be used.
3169
GLib.threads_init()
3170
2132
3171
global main_loop
2133
3172
# From the Avahi example code
2134
DBusGMainLoop(set_as_default=True )
2135
main_loop = gobject.MainLoop()
3173
DBusGMainLoop(set_as_default=True)
3174
main_loop = GLib.MainLoop()
2136
3175
bus = dbus.SystemBus()
2137
3176
# End of Avahi example code
2138
3177
if use_dbus:
2139
3178
try:
2140
3179
bus_name = dbus.service.BusName("se.recompile.Mandos",
2141
bus, do_not_queue=True)
2142
old_bus_name = (dbus.service.BusName
2143
("se.bsnet.fukt.Mandos", bus,
2144
do_not_queue=True))
2145
except dbus.exceptions.NameExistsException as e:
2146
logger.error(unicode(e) + ", disabling D-Bus")
3180
bus,
3181
do_not_queue=True)
3182
old_bus_name = dbus.service.BusName(
3183
"se.bsnet.fukt.Mandos", bus,
3184
do_not_queue=True)
3185
except dbus.exceptions.DBusException as e:
3186
logger.error("Disabling D-Bus:", exc_info=e)
2147
3187
use_dbus = False
2148
3188
server_settings["use_dbus"] = False
2149
3189
tcp_server.use_dbus = False
2150
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2151
service = AvahiServiceToSyslog(name =
2152
server_settings["servicename"],
2153
servicetype = "_mandos._tcp",
2154
protocol = protocol, bus = bus)
2155
if server_settings["interface"]:
2156
service.interface = (if_nametoindex
2157
(str(server_settings["interface"])))
2158
3190
if zeroconf:
3191
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3192
service = AvahiServiceToSyslog(
3193
name=server_settings["servicename"],
3194
servicetype="_mandos._tcp",
3195
protocol=protocol,
3196
bus=bus)
3197
if server_settings["interface"]:
3198
service.interface = if_nametoindex(
3199
server_settings["interface"].encode("utf-8"))
3200
2159
3201
global multiprocessing_manager
2160
3202
multiprocessing_manager = multiprocessing.Manager()
2161
3203
2162
3204
client_class = Client
2163
3205
if use_dbus:
2164
client_class = functools.partial(ClientDBusTransitional,
2165
bus = bus)
2166
2167
special_settings = {
2168
# Some settings need to be accessd by special methods;
2169
# booleans need .getboolean(), etc. Here is a list of them:
2170
"approved_by_default":
2171
lambda section:
2172
client_config.getboolean(section, "approved_by_default"),
2173
}
2174
# Construct a new dict of client settings of this form:
2175
# { client_name: {setting_name: value, ...}, ...}
2176
# with exceptions for any special settings as defined above
2177
client_settings = dict((clientname,
2178
dict((setting,
2179
(value
2180
if setting not in special_settings
2181
else special_settings[setting]
2182
(clientname)))
2183
for setting, value in
2184
client_config.items(clientname)))
2185
for clientname in client_config.sections())
2186
3206
client_class = functools.partial(ClientDBus, bus=bus)
3207
3208
client_settings = Client.config_parser(client_config)
2187
3209
old_client_settings = {}
2188
clients_data = []
2189
3210
clients_data = {}
3211
3212
# This is used to redirect stdout and stderr for checker processes
3213
global wnull
3214
wnull = open(os.devnull, "w") # A writable /dev/null
3215
# Only used if server is running in foreground but not in debug
3216
# mode
3217
if debug or not foreground:
3218
wnull.close()
3219
2190
3220
# Get client data and settings from last running state.
2191
3221
if server_settings["restore"]:
2192
3222
try:
2193
3223
with open(stored_state_path, "rb") as stored_state:
2194
clients_data, old_client_settings = (pickle.load
2195
(stored_state))
3224
if sys.version_info.major == 2:
3225
clients_data, old_client_settings = pickle.load(
3226
stored_state)
3227
else:
3228
bytes_clients_data, bytes_old_client_settings = (
3229
pickle.load(stored_state, encoding="bytes"))
3230
# Fix bytes to strings
3231
# clients_data
3232
# .keys()
3233
clients_data = {(key.decode("utf-8")
3234
if isinstance(key, bytes)
3235
else key): value
3236
for key, value in
3237
bytes_clients_data.items()}
3238
del bytes_clients_data
3239
for key in clients_data:
3240
value = {(k.decode("utf-8")
3241
if isinstance(k, bytes) else k): v
3242
for k, v in
3243
clients_data[key].items()}
3244
clients_data[key] = value
3245
# .client_structure
3246
value["client_structure"] = [
3247
(s.decode("utf-8")
3248
if isinstance(s, bytes)
3249
else s) for s in
3250
value["client_structure"]]
3251
# .name & .host
3252
for k in ("name", "host"):
3253
if isinstance(value[k], bytes):
3254
value[k] = value[k].decode("utf-8")
3255
if "key_id" not in value:
3256
value["key_id"] = ""
3257
elif "fingerprint" not in value:
3258
value["fingerprint"] = ""
3259
# old_client_settings
3260
# .keys()
3261
old_client_settings = {
3262
(key.decode("utf-8")
3263
if isinstance(key, bytes)
3264
else key): value
3265
for key, value in
3266
bytes_old_client_settings.items()}
3267
del bytes_old_client_settings
3268
# .host
3269
for value in old_client_settings.values():
3270
if isinstance(value["host"], bytes):
3271
value["host"] = (value["host"]
3272
.decode("utf-8"))
2196
3273
os.remove(stored_state_path)
2197
3274
except IOError as e:
2198
logger.warning("Could not load persistent state: {0}"
2199
.format(e))
2200
if e.errno != errno.ENOENT:
3275
if e.errno == errno.ENOENT:
3276
logger.warning("Could not load persistent state:"
3277
" {}".format(os.strerror(e.errno)))
3278
else:
3279
logger.critical("Could not load persistent state:",
3280
exc_info=e)
2201
3281
raise
2202
2203
with Crypto() as crypt:
2204
for client in clients_data:
2205
client_name = client["name"]
2206
3282
except EOFError as e:
3283
logger.warning("Could not load persistent state: "
3284
"EOFError:",
3285
exc_info=e)
3286
3287
with PGPEngine() as pgp:
3288
for client_name, client in clients_data.items():
3289
# Skip removed clients
3290
if client_name not in client_settings:
3291
continue
3292
2207
3293
# Decide which value to use after restoring saved state.
2208
3294
# We have three different values: Old config file,
2209
3295
# new config file, and saved state.
2214
3300
# For each value in new config, check if it
2215
3301
# differs from the old config value (Except for
2216
3302
# the "secret" attribute)
2217
if (name != "secret" and
2218
value != old_client_settings[client_name]
2219
[name]):
2220
setattr(client, name, value)
3303
if (name != "secret"
3304
and (value !=
3305
old_client_settings[client_name][name])):
3306
client[name] = value
2221
3307
except KeyError:
2222
3308
pass
2223
3309
2224
3310
# Clients who has passed its expire date can still be
2225
# enabled if its last checker was sucessful. Clients
2226
# whose checker failed before we stored its state is
2227
# assumed to have failed all checkers during downtime.
2228
if client["enabled"] and client["last_checked_ok"]:
2229
if ((datetime.datetime.utcnow()
2230
- client["last_checked_ok"])
2231
> client["interval"]):
2232
if client["last_checker_status"] != 0:
3311
# enabled if its last checker was successful. A Client
3312
# whose checker succeeded before we stored its state is
3313
# assumed to have successfully run all checkers during
3314
# downtime.
3315
if client["enabled"]:
3316
if datetime.datetime.utcnow() >= client["expires"]:
3317
if not client["last_checked_ok"]:
3318
logger.warning(
3319
"disabling client {} - Client never "
3320
"performed a successful checker".format(
3321
client_name))
3322
client["enabled"] = False
3323
elif client["last_checker_status"] != 0:
3324
logger.warning(
3325
"disabling client {} - Client last"
3326
" checker failed with error code"
3327
" {}".format(
3328
client_name,
3329
client["last_checker_status"]))
2233
3330
client["enabled"] = False
2234
3331
else:
2235
client["expires"] = (datetime.datetime
2236
.utcnow()
2237
+ client["timeout"])
2238
2239
client["changedstate"] = (multiprocessing_manager
2240
.Condition
2241
(multiprocessing_manager
2242
.Lock()))
2243
if use_dbus:
2244
new_client = (ClientDBusTransitional.__new__
2245
(ClientDBusTransitional))
2246
tcp_server.clients[client_name] = new_client
2247
new_client.bus = bus
2248
for name, value in client.iteritems():
2249
setattr(new_client, name, value)
2250
client_object_name = unicode(client_name).translate(
2251
{ord("."): ord("_"),
2252
ord("-"): ord("_")})
2253
new_client.dbus_object_path = (dbus.ObjectPath
2254
("/clients/"
2255
+ client_object_name))
2256
DBusObjectWithProperties.__init__(new_client,
2257
new_client.bus,
2258
new_client
2259
.dbus_object_path)
2260
else:
2261
tcp_server.clients[client_name] = (Client.__new__
2262
(Client))
2263
for name, value in client.iteritems():
2264
setattr(tcp_server.clients[client_name],
2265
name, value)
2266
3332
client["expires"] = (
3333
datetime.datetime.utcnow()
3334
+ client["timeout"])
3335
logger.debug("Last checker succeeded,"
3336
" keeping {} enabled".format(
3337
client_name))
2267
3338
try:
2268
tcp_server.clients[client_name].secret = (
2269
crypt.decrypt(tcp_server.clients[client_name]
2270
.encrypted_secret,
2271
client_settings[client_name]
2272
["secret"]))
2273
except CryptoError:
3339
client["secret"] = pgp.decrypt(
3340
client["encrypted_secret"],
3341
client_settings[client_name]["secret"])
3342
except PGPError:
2274
3343
# If decryption fails, we use secret from new settings
2275
tcp_server.clients[client_name].secret = (
2276
client_settings[client_name]["secret"])
2277
2278
# Create/remove clients based on new changes made to config
2279
for clientname in set(old_client_settings) - set(client_settings):
2280
del tcp_server.clients[clientname]
2281
for clientname in set(client_settings) - set(old_client_settings):
2282
tcp_server.clients[clientname] = (client_class(name
2283
= clientname,
2284
config =
2285
client_settings
2286
[clientname]))
2287
3344
logger.debug("Failed to decrypt {} old secret".format(
3345
client_name))
3346
client["secret"] = (client_settings[client_name]
3347
["secret"])
3348
3349
# Add/remove clients based on new changes made to config
3350
for client_name in (set(old_client_settings)
3351
- set(client_settings)):
3352
del clients_data[client_name]
3353
for client_name in (set(client_settings)
3354
- set(old_client_settings)):
3355
clients_data[client_name] = client_settings[client_name]
3356
3357
# Create all client objects
3358
for client_name, client in clients_data.items():
3359
tcp_server.clients[client_name] = client_class(
3360
name=client_name,
3361
settings=client,
3362
server_settings=server_settings)
3363
2288
3364
if not tcp_server.clients:
2289
3365
logger.warning("No clients defined")
2290
2291
if not debug:
2292
try:
2293
with pidfile:
2294
pid = os.getpid()
2295
pidfile.write(str(pid) + "\n".encode("utf-8"))
2296
del pidfile
2297
except IOError:
2298
logger.error("Could not write to file %r with PID %d",
2299
pidfilename, pid)
2300
except NameError:
2301
# "pidfile" was never created
2302
pass
3366
3367
if not foreground:
3368
if pidfile is not None:
3369
pid = os.getpid()
3370
try:
3371
with pidfile:
3372
print(pid, file=pidfile)
3373
except IOError:
3374
logger.error("Could not write to file %r with PID %d",
3375
pidfilename, pid)
3376
del pidfile
2303
3377
del pidfilename
2304
2305
signal.signal(signal.SIGINT, signal.SIG_IGN)
2306
2307
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2308
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2309
3378
3379
for termsig in (signal.SIGHUP, signal.SIGTERM):
3380
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3381
lambda: main_loop.quit() and False)
3382
2310
3383
if use_dbus:
2311
class MandosDBusService(dbus.service.Object):
3384
3385
@alternate_dbus_interfaces(
3386
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3387
class MandosDBusService(DBusObjectWithObjectManager):
2312
3388
"""A D-Bus proxy object"""
3389
2313
3390
def __init__(self):
2314
3391
dbus.service.Object.__init__(self, bus, "/")
3392
2315
3393
_interface = "se.recompile.Mandos"
2316
3394
2317
3395
@dbus.service.signal(_interface, signature="o")
2318
3396
def ClientAdded(self, objpath):
2319
3397
"D-Bus signal"
2320
3398
pass
2321
3399
2322
3400
@dbus.service.signal(_interface, signature="ss")
2323
def ClientNotFound(self, fingerprint, address):
3401
def ClientNotFound(self, key_id, address):
2324
3402
"D-Bus signal"
2325
3403
pass
2326
3404
3405
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3406
"true"})
2327
3407
@dbus.service.signal(_interface, signature="os")
2328
3408
def ClientRemoved(self, objpath, name):
2329
3409
"D-Bus signal"
2330
3410
pass
2331
3411
3412
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3413
"true"})
2332
3414
@dbus.service.method(_interface, out_signature="ao")
2333
3415
def GetAllClients(self):
2334
3416
"D-Bus method"
2335
return dbus.Array(c.dbus_object_path
2336
for c in
2337
tcp_server.clients.itervalues())
2338
3417
return dbus.Array(c.dbus_object_path for c in
3418
tcp_server.clients.values())
3419
3420
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3421
"true"})
2339
3422
@dbus.service.method(_interface,
2340
3423
out_signature="a{oa{sv}}")
2341
3424
def GetAllClientsWithProperties(self):
2342
3425
"D-Bus method"
2343
3426
return dbus.Dictionary(
2344
((c.dbus_object_path, c.GetAll(""))
2345
for c in tcp_server.clients.itervalues()),
3427
{c.dbus_object_path: c.GetAll(
3428
"se.recompile.Mandos.Client")
3429
for c in tcp_server.clients.values()},
2346
3430
signature="oa{sv}")
2347
3431
2348
3432
@dbus.service.method(_interface, in_signature="o")
2349
3433
def RemoveClient(self, object_path):
2350
3434
"D-Bus method"
2351
for c in tcp_server.clients.itervalues():
3435
for c in tcp_server.clients.values():
2352
3436
if c.dbus_object_path == object_path:
2353
3437
del tcp_server.clients[c.name]
2354
3438
c.remove_from_connection()
2355
# Don't signal anything except ClientRemoved
3439
# Don't signal the disabling
2356
3440
c.disable(quiet=True)
2357
# Emit D-Bus signal
2358
self.ClientRemoved(object_path, c.name)
3441
# Emit D-Bus signal for removal
3442
self.client_removed_signal(c)
2359
3443
return
2360
3444
raise KeyError(object_path)
2361
3445
2362
3446
del _interface
2363
2364
class MandosDBusServiceTransitional(MandosDBusService):
2365
__metaclass__ = AlternateDBusNamesMetaclass
2366
mandos_dbus_service = MandosDBusServiceTransitional()
2367
3447
3448
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3449
out_signature="a{oa{sa{sv}}}")
3450
def GetManagedObjects(self):
3451
"""D-Bus method"""
3452
return dbus.Dictionary(
3453
{client.dbus_object_path:
3454
dbus.Dictionary(
3455
{interface: client.GetAll(interface)
3456
for interface in
3457
client._get_all_interface_names()})
3458
for client in tcp_server.clients.values()})
3459
3460
def client_added_signal(self, client):
3461
"""Send the new standard signal and the old signal"""
3462
if use_dbus:
3463
# New standard signal
3464
self.InterfacesAdded(
3465
client.dbus_object_path,
3466
dbus.Dictionary(
3467
{interface: client.GetAll(interface)
3468
for interface in
3469
client._get_all_interface_names()}))
3470
# Old signal
3471
self.ClientAdded(client.dbus_object_path)
3472
3473
def client_removed_signal(self, client):
3474
"""Send the new standard signal and the old signal"""
3475
if use_dbus:
3476
# New standard signal
3477
self.InterfacesRemoved(
3478
client.dbus_object_path,
3479
client._get_all_interface_names())
3480
# Old signal
3481
self.ClientRemoved(client.dbus_object_path,
3482
client.name)
3483
3484
mandos_dbus_service = MandosDBusService()
3485
3486
# Save modules to variables to exempt the modules from being
3487
# unloaded before the function registered with atexit() is run.
3488
mp = multiprocessing
3489
wn = wnull
3490
2368
3491
def cleanup():
2369
3492
"Cleanup function; run on exit"
2370
service.cleanup()
2371
2372
multiprocessing.active_children()
3493
if zeroconf:
3494
service.cleanup()
3495
3496
mp.active_children()
3497
wn.close()
2373
3498
if not (tcp_server.clients or client_settings):
2374
3499
return
2375
3500
2376
3501
# Store client before exiting. Secrets are encrypted with key
2377
3502
# based on what config file has. If config file is
2378
3503
# removed/edited, old secret will thus be unrecovable.
2379
clients = []
2380
with Crypto() as crypt:
2381
for client in tcp_server.clients.itervalues():
3504
clients = {}
3505
with PGPEngine() as pgp:
3506
for client in tcp_server.clients.values():
2382
3507
key = client_settings[client.name]["secret"]
2383
client.encrypted_secret = crypt.encrypt(client.secret,
2384
key)
3508
client.encrypted_secret = pgp.encrypt(client.secret,
3509
key)
2385
3510
client_dict = {}
2386
2387
# A list of attributes that will not be stored when
2388
# shutting down.
2389
exclude = set(("bus", "changedstate", "secret"))
2390
for name, typ in (inspect.getmembers
2391
(dbus.service.Object)):
3511
3512
# A list of attributes that can not be pickled
3513
# + secret.
3514
exclude = {"bus", "changedstate", "secret",
3515
"checker", "server_settings"}
3516
for name, typ in inspect.getmembers(dbus.service
3517
.Object):
2392
3518
exclude.add(name)
2393
3519
2394
3520
client_dict["encrypted_secret"] = (client
2395
3521
.encrypted_secret)
2396
3522
for attr in client.client_structure:
2397
3523
if attr not in exclude:
2398
3524
client_dict[attr] = getattr(client, attr)
2399
2400
clients.append(client_dict)
3525
3526
clients[client.name] = client_dict
2401
3527
del client_settings[client.name]["secret"]
2402
3528
2403
3529
try:
2404
with os.fdopen(os.open(stored_state_path,
2405
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2406
0600), "wb") as stored_state:
2407
pickle.dump((clients, client_settings), stored_state)
3530
with tempfile.NamedTemporaryFile(
3531
mode='wb',
3532
suffix=".pickle",
3533
prefix='clients-',
3534
dir=os.path.dirname(stored_state_path),
3535
delete=False) as stored_state:
3536
pickle.dump((clients, client_settings), stored_state,
3537
protocol=2)
3538
tempname = stored_state.name
3539
os.rename(tempname, stored_state_path)
2408
3540
except (IOError, OSError) as e:
2409
logger.warning("Could not save persistent state: {0}"
2410
.format(e))
2411
if e.errno not in (errno.ENOENT, errno.EACCES):
3541
if not debug:
3542
try:
3543
os.remove(tempname)
3544
except NameError:
3545
pass
3546
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3547
logger.warning("Could not save persistent state: {}"
3548
.format(os.strerror(e.errno)))
3549
else:
3550
logger.warning("Could not save persistent state:",
3551
exc_info=e)
2412
3552
raise
2413
3553
2414
3554
# Delete all clients, and settings from config
2415
3555
while tcp_server.clients:
2416
3556
name, client = tcp_server.clients.popitem()
2417
3557
if use_dbus:
2418
3558
client.remove_from_connection()
2419
# Don't signal anything except ClientRemoved
3559
# Don't signal the disabling
2420
3560
client.disable(quiet=True)
3561
# Emit D-Bus signal for removal
2421
3562
if use_dbus:
2422
# Emit D-Bus signal
2423
mandos_dbus_service.ClientRemoved(client
2424
.dbus_object_path,
2425
client.name)
3563
mandos_dbus_service.client_removed_signal(client)
2426
3564
client_settings.clear()
2427
3565
2428
3566
atexit.register(cleanup)
2429
2430
for client in tcp_server.clients.itervalues():
3567
3568
for client in tcp_server.clients.values():
2431
3569
if use_dbus:
2432
# Emit D-Bus signal
2433
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3570
# Emit D-Bus signal for adding
3571
mandos_dbus_service.client_added_signal(client)
2434
3572
# Need to initiate checking of clients
2435
3573
if client.enabled:
2436
3574
client.init_checker()
2437
3575
2438
3576
tcp_server.enable()
2439
3577
tcp_server.server_activate()
2440
3578
2441
3579
# Find out what port we got
2442
service.port = tcp_server.socket.getsockname()[1]
3580
if zeroconf:
3581
service.port = tcp_server.socket.getsockname()[1]
2443
3582
if use_ipv6:
2444
3583
logger.info("Now listening on address %r, port %d,"
2445
" flowinfo %d, scope_id %d"
2446
% tcp_server.socket.getsockname())
3584
" flowinfo %d, scope_id %d",
3585
*tcp_server.socket.getsockname())
2447
3586
else: # IPv4
2448
logger.info("Now listening on address %r, port %d"
2449
% tcp_server.socket.getsockname())
2450
2451
#service.interface = tcp_server.socket.getsockname()[3]
2452
3587
logger.info("Now listening on address %r, port %d",
3588
*tcp_server.socket.getsockname())
3589
3590
# service.interface = tcp_server.socket.getsockname()[3]
3591
2453
3592
try:
2454
# From the Avahi example code
2455
try:
2456
service.activate()
2457
except dbus.exceptions.DBusException as error:
2458
logger.critical("DBusException: %s", error)
2459
cleanup()
2460
sys.exit(1)
2461
# End of Avahi example code
2462
2463
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2464
lambda *args, **kwargs:
2465
(tcp_server.handle_request
2466
(*args[2:], **kwargs) or True))
2467
3593
if zeroconf:
3594
# From the Avahi example code
3595
try:
3596
service.activate()
3597
except dbus.exceptions.DBusException as error:
3598
logger.critical("D-Bus Exception", exc_info=error)
3599
cleanup()
3600
sys.exit(1)
3601
# End of Avahi example code
3602
3603
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3604
lambda *args, **kwargs:
3605
(tcp_server.handle_request
3606
(*args[2:], **kwargs) or True))
3607
2468
3608
logger.debug("Starting main loop")
2469
3609
main_loop.run()
2470
3610
except AvahiError as error:
2471
logger.critical("AvahiError: %s", error)
3611
logger.critical("Avahi Error", exc_info=error)
2472
3612
cleanup()
2473
3613
sys.exit(1)
2474
3614
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0