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- Committer: Teddy Hogeborn
- Date: 2019-08-18 00:23:21 UTC
- Revision ID: teddy@recompile.se-20190818002321-qvjsogu0rhoyuwyc
Use the systemd sysusers.d mechanism, if present
* Makefile (SYSUSERS): New.
(install-server): Also install sysusers.d file, if $(SYSUSERS)
exists.
* debian/mandos.dirs (usr/lib/sysusers.d): New.
* sysusers.d-mandos.conf: New.
* Makefile (SYSUSERS): New.
(install-server): Also install sysusers.d file, if $(SYSUSERS)
exists.
* debian/mandos.dirs (usr/lib/sysusers.d): New.
* sysusers.d-mandos.conf: 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.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
import SocketServer as socketserver
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
64
73
import multiprocessing
65
74
import types
66
75
import binascii
67
76
import tempfile
77
import itertools
78
import collections
79
import codecs
68
80
69
81
import dbus
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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
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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"
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"
90
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
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
124
' [%(process)d]:'
125
' %(levelname)s:'
126
' %(message)s'))
127
logger.addHandler(console)
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
133
186
pass
134
187
135
188
136
class PGPEngine(object):
189
class PGPEngine:
137
190
"""A simple class for OpenPGP symmetric encryption & decryption"""
191
138
192
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
140
193
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet'])
146
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
147
213
def __enter__(self):
148
214
return self
149
150
def __exit__ (self, exc_type, exc_value, traceback):
215
216
def __exit__(self, exc_type, exc_value, traceback):
151
217
self._cleanup()
152
218
return False
153
219
154
220
def __del__(self):
155
221
self._cleanup()
156
222
157
223
def _cleanup(self):
158
224
if self.tempdir is not None:
159
225
# Delete contents of tempdir
160
226
for root, dirs, files in os.walk(self.tempdir,
161
topdown = False):
227
topdown=False):
162
228
for filename in files:
163
229
os.remove(os.path.join(root, filename))
164
230
for dirname in dirs:
166
232
# Remove tempdir
167
233
os.rmdir(self.tempdir)
168
234
self.tempdir = None
169
235
170
236
def password_encode(self, password):
171
237
# Passphrase can not be empty and can not contain newlines or
172
238
# NUL bytes. So we prefix it and hex encode it.
173
return b"mandos" + binascii.hexlify(password)
174
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
175
247
def encrypt(self, data, password):
176
self.gnupg.passphrase = self.password_encode(password)
177
with open(os.devnull) as devnull:
178
try:
179
proc = self.gnupg.run(['--symmetric'],
180
create_fhs=['stdin', 'stdout'],
181
attach_fhs={'stderr': devnull})
182
with contextlib.closing(proc.handles['stdin']) as f:
183
f.write(data)
184
with contextlib.closing(proc.handles['stdout']) as f:
185
ciphertext = f.read()
186
proc.wait()
187
except IOError as e:
188
raise PGPError(e)
189
self.gnupg.passphrase = None
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)
190
263
return ciphertext
191
264
192
265
def decrypt(self, data, password):
193
self.gnupg.passphrase = self.password_encode(password)
194
with open(os.devnull) as devnull:
195
try:
196
proc = self.gnupg.run(['--decrypt'],
197
create_fhs=['stdin', 'stdout'],
198
attach_fhs={'stderr': devnull})
199
with contextlib.closing(proc.handles['stdin'] ) as f:
200
f.write(data)
201
with contextlib.closing(proc.handles['stdout']) as f:
202
decrypted_plaintext = f.read()
203
proc.wait()
204
except IOError as e:
205
raise PGPError(e)
206
self.gnupg.passphrase = None
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)
207
281
return decrypted_plaintext
208
282
209
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
210
309
211
310
class AvahiError(Exception):
212
311
def __init__(self, value, *args, **kwargs):
213
312
self.value = value
214
super(AvahiError, self).__init__(value, *args, **kwargs)
215
def __unicode__(self):
216
return unicode(repr(self.value))
313
return super(AvahiError, self).__init__(value, *args,
314
**kwargs)
315
217
316
218
317
class AvahiServiceError(AvahiError):
219
318
pass
220
319
320
221
321
class AvahiGroupError(AvahiError):
222
322
pass
223
323
224
324
225
class AvahiService(object):
325
class AvahiService:
226
326
"""An Avahi (Zeroconf) service.
227
327
228
328
Attributes:
229
329
interface: integer; avahi.IF_UNSPEC or an interface index.
230
330
Used to optionally bind to the specified interface.
231
331
name: string; Example: 'Mandos'
232
332
type: string; Example: '_mandos._tcp'.
233
See <http://www.dns-sd.org/ServiceTypes.html>
333
See <https://www.iana.org/assignments/service-names-port-numbers>
234
334
port: integer; what port to announce
235
335
TXT: list of strings; TXT record for the service
236
336
domain: string; Domain to publish on, default to .local if empty.
242
342
server: D-Bus Server
243
343
bus: dbus.SystemBus()
244
344
"""
245
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
246
servicetype = None, port = None, TXT = None,
247
domain = "", host = "", max_renames = 32768,
248
protocol = avahi.PROTO_UNSPEC, bus = None):
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):
249
357
self.interface = interface
250
358
self.name = name
251
359
self.type = servicetype
260
368
self.server = None
261
369
self.bus = bus
262
370
self.entry_group_state_changed_match = None
263
def rename(self):
371
372
def rename(self, remove=True):
264
373
"""Derived from the Avahi example code"""
265
374
if self.rename_count >= self.max_renames:
266
375
logger.critical("No suitable Zeroconf service name found"
267
376
" after %i retries, exiting.",
268
377
self.rename_count)
269
378
raise AvahiServiceError("Too many renames")
270
self.name = unicode(self.server
271
.GetAlternativeServiceName(self.name))
379
self.name = str(
380
self.server.GetAlternativeServiceName(self.name))
381
self.rename_count += 1
272
382
logger.info("Changing Zeroconf service name to %r ...",
273
383
self.name)
274
self.remove()
384
if remove:
385
self.remove()
275
386
try:
276
387
self.add()
277
388
except dbus.exceptions.DBusException as error:
278
logger.critical("DBusException: %s", error)
279
self.cleanup()
280
os._exit(1)
281
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
282
398
def remove(self):
283
399
"""Derived from the Avahi example code"""
284
400
if self.entry_group_state_changed_match is not None:
286
402
self.entry_group_state_changed_match = None
287
403
if self.group is not None:
288
404
self.group.Reset()
405
289
406
def add(self):
290
407
"""Derived from the Avahi example code"""
291
408
self.remove()
308
425
dbus.UInt16(self.port),
309
426
avahi.string_array_to_txt_array(self.TXT))
310
427
self.group.Commit()
428
311
429
def entry_group_state_changed(self, state, error):
312
430
"""Derived from the Avahi example code"""
313
431
logger.debug("Avahi entry group state change: %i", state)
314
432
315
433
if state == avahi.ENTRY_GROUP_ESTABLISHED:
316
434
logger.debug("Zeroconf service established.")
317
435
elif state == avahi.ENTRY_GROUP_COLLISION:
319
437
self.rename()
320
438
elif state == avahi.ENTRY_GROUP_FAILURE:
321
439
logger.critical("Avahi: Error in group state changed %s",
322
unicode(error))
323
raise AvahiGroupError("State changed: %s"
324
% unicode(error))
440
str(error))
441
raise AvahiGroupError("State changed: {!s}".format(error))
442
325
443
def cleanup(self):
326
444
"""Derived from the Avahi example code"""
327
445
if self.group is not None:
332
450
pass
333
451
self.group = None
334
452
self.remove()
453
335
454
def server_state_changed(self, state, error=None):
336
455
"""Derived from the Avahi example code"""
337
456
logger.debug("Avahi server state change: %i", state)
338
bad_states = { avahi.SERVER_INVALID:
339
"Zeroconf server invalid",
340
avahi.SERVER_REGISTERING: None,
341
avahi.SERVER_COLLISION:
342
"Zeroconf server name collision",
343
avahi.SERVER_FAILURE:
344
"Zeroconf server failure" }
457
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
}
345
463
if state in bad_states:
346
464
if bad_states[state] is not None:
347
465
if error is None:
350
468
logger.error(bad_states[state] + ": %r", error)
351
469
self.cleanup()
352
470
elif state == avahi.SERVER_RUNNING:
353
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)
354
483
else:
355
484
if error is None:
356
485
logger.debug("Unknown state: %r", state)
357
486
else:
358
487
logger.debug("Unknown state: %r: %r", state, error)
488
359
489
def activate(self):
360
490
"""Derived from the Avahi example code"""
361
491
if self.server is None:
365
495
follow_name_owner_changes=True),
366
496
avahi.DBUS_INTERFACE_SERVER)
367
497
self.server.connect_to_signal("StateChanged",
368
self.server_state_changed)
498
self.server_state_changed)
369
499
self.server_state_changed(self.server.GetState())
370
500
501
371
502
class AvahiServiceToSyslog(AvahiService):
372
def rename(self):
503
def rename(self, *args, **kwargs):
373
504
"""Add the new name to the syslog messages"""
374
ret = AvahiService.rename(self)
375
syslogger.setFormatter(logging.Formatter
376
('Mandos (%s) [%%(process)d]:'
377
' %%(levelname)s: %%(message)s'
378
% 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)))
379
509
return ret
380
510
381
def timedelta_to_milliseconds(td):
382
"Convert a datetime.timedelta() to milliseconds"
383
return ((td.days * 24 * 60 * 60 * 1000)
384
+ (td.seconds * 1000)
385
+ (td.microseconds // 1000))
386
387
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:
388
825
"""A representation of a client host served by this server.
389
826
390
827
Attributes:
391
828
approved: bool(); 'None' if not yet approved/disapproved
392
829
approval_delay: datetime.timedelta(); Time to wait for approval
393
830
approval_duration: datetime.timedelta(); Duration of one approval
394
checker: subprocess.Popen(); a running checker process used
395
to see if the client lives.
396
'None' if no process is running.
397
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
398
835
checker_command: string; External command which is run to check
399
836
if client lives. %() expansions are done at
400
837
runtime with vars(self) as dict, so that for
401
838
instance %(name)s can be used in the command.
402
checker_initiator_tag: a gobject event source tag, or None
839
checker_initiator_tag: a GLib event source tag, or None
403
840
created: datetime.datetime(); (UTC) object creation
404
841
client_structure: Object describing what attributes a client has
405
842
and is used for storing the client at exit
406
843
current_checker_command: string; current running checker_command
407
disable_initiator_tag: a gobject event source tag, or None
844
disable_initiator_tag: a GLib event source tag, or None
408
845
enabled: bool()
409
846
fingerprint: string (40 or 32 hexadecimal digits); used to
410
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
411
850
host: string; available for use by the checker command
412
851
interval: datetime.timedelta(); How often to start a new checker
413
852
last_approval_request: datetime.datetime(); (UTC) or None
414
853
last_checked_ok: datetime.datetime(); (UTC) or None
415
416
854
last_checker_status: integer between 0 and 255 reflecting exit
417
855
status of last checker. -1 reflects crashed
418
checker, or None.
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
419
859
last_enabled: datetime.datetime(); (UTC) or None
420
860
name: string; from the config file, used in log messages and
421
861
D-Bus identifiers
422
862
secret: bytestring; sent verbatim (over TLS) to client
423
863
timeout: datetime.timedelta(); How long from last_checked_ok
424
864
until this client is disabled
425
extended_timeout: extra long timeout when password has been sent
865
extended_timeout: extra long timeout when secret has been sent
426
866
runtime_expansions: Allowed attributes for runtime expansion.
427
867
expires: datetime.datetime(); time (UTC) when a client will be
428
868
disabled, or None
869
server_settings: The server_settings dict from main()
429
870
"""
430
871
431
872
runtime_expansions = ("approval_delay", "approval_duration",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
873
"created", "enabled", "expires", "key_id",
874
"fingerprint", "host", "interval",
875
"last_approval_request", "last_checked_ok",
434
876
"last_enabled", "name", "timeout")
435
436
def timeout_milliseconds(self):
437
"Return the 'timeout' attribute in milliseconds"
438
return timedelta_to_milliseconds(self.timeout)
439
440
def extended_timeout_milliseconds(self):
441
"Return the 'extended_timeout' attribute in milliseconds"
442
return timedelta_to_milliseconds(self.extended_timeout)
443
444
def interval_milliseconds(self):
445
"Return the 'interval' attribute in milliseconds"
446
return timedelta_to_milliseconds(self.interval)
447
448
def approval_delay_milliseconds(self):
449
return timedelta_to_milliseconds(self.approval_delay)
450
451
def __init__(self, name = None, config=None):
452
"""Note: the 'checker' key in 'config' sets the
453
'checker_command' attribute and *not* the 'checker'
454
attribute."""
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):
455
944
self.name = name
456
if config is None:
457
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
458
962
logger.debug("Creating client %r", self.name)
459
# Uppercase and remove spaces from fingerprint for later
460
# comparison purposes with return value from the fingerprint()
461
# function
462
self.fingerprint = (config["fingerprint"].upper()
463
.replace(" ", ""))
963
logger.debug(" Key ID: %s", self.key_id)
464
964
logger.debug(" Fingerprint: %s", self.fingerprint)
465
if "secret" in config:
466
self.secret = config["secret"].decode("base64")
467
elif "secfile" in config:
468
with open(os.path.expanduser(os.path.expandvars
469
(config["secfile"])),
470
"rb") as secfile:
471
self.secret = secfile.read()
472
else:
473
raise TypeError("No secret or secfile for client %s"
474
% self.name)
475
self.host = config.get("host", "")
476
self.created = datetime.datetime.utcnow()
477
self.enabled = config.get("enabled", True)
478
self.last_approval_request = None
479
if self.enabled:
480
self.last_enabled = datetime.datetime.utcnow()
481
else:
482
self.last_enabled = None
483
self.last_checked_ok = None
484
self.last_checker_status = None
485
self.timeout = string_to_delta(config["timeout"])
486
self.extended_timeout = string_to_delta(config
487
["extended_timeout"])
488
self.interval = string_to_delta(config["interval"])
965
self.created = settings.get("created",
966
datetime.datetime.utcnow())
967
968
# attributes specific for this server instance
489
969
self.checker = None
490
970
self.checker_initiator_tag = None
491
971
self.disable_initiator_tag = None
492
if self.enabled:
493
self.expires = datetime.datetime.utcnow() + self.timeout
494
else:
495
self.expires = None
496
972
self.checker_callback_tag = None
497
self.checker_command = config["checker"]
498
973
self.current_checker_command = None
499
974
self.approved = None
500
self.approved_by_default = config.get("approved_by_default",
501
True)
502
975
self.approvals_pending = 0
503
self.approval_delay = string_to_delta(
504
config["approval_delay"])
505
self.approval_duration = string_to_delta(
506
config["approval_duration"])
507
self.changedstate = (multiprocessing_manager
508
.Condition(multiprocessing_manager
509
.Lock()))
510
self.client_structure = [attr for attr in
511
self.__dict__.iterkeys()
976
self.changedstate = multiprocessing_manager.Condition(
977
multiprocessing_manager.Lock())
978
self.client_structure = [attr
979
for attr in self.__dict__.keys()
512
980
if not attr.startswith("_")]
513
981
self.client_structure.append("client_structure")
514
515
for name, t in inspect.getmembers(type(self),
516
lambda obj:
517
isinstance(obj,
518
property)):
982
983
for name, t in inspect.getmembers(
984
type(self), lambda obj: isinstance(obj, property)):
519
985
if not name.startswith("_"):
520
986
self.client_structure.append(name)
521
987
522
988
# Send notice to process children that client state has changed
523
989
def send_changedstate(self):
524
990
with self.changedstate:
525
991
self.changedstate.notify_all()
526
992
527
993
def enable(self):
528
994
"""Start this client's checker and timeout hooks"""
529
995
if getattr(self, "enabled", False):
530
996
# Already enabled
531
997
return
532
self.send_changedstate()
533
998
self.expires = datetime.datetime.utcnow() + self.timeout
534
999
self.enabled = True
535
1000
self.last_enabled = datetime.datetime.utcnow()
536
1001
self.init_checker()
537
1002
self.send_changedstate()
1003
538
1004
def disable(self, quiet=True):
539
1005
"""Disable this client."""
540
1006
if not getattr(self, "enabled", False):
541
1007
return False
542
1008
if not quiet:
543
self.send_changedstate()
544
if not quiet:
545
1009
logger.info("Disabling client %s", self.name)
546
if getattr(self, "disable_initiator_tag", False):
547
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)
548
1012
self.disable_initiator_tag = None
549
1013
self.expires = None
550
if getattr(self, "checker_initiator_tag", False):
551
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)
552
1016
self.checker_initiator_tag = None
553
1017
self.stop_checker()
554
1018
self.enabled = False
555
# 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
556
1022
return False
557
1023
558
1024
def __del__(self):
559
1025
self.disable()
560
1026
561
1027
def init_checker(self):
562
1028
# Schedule a new checker to be started an 'interval' from now,
563
1029
# and every interval from then on.
564
self.checker_initiator_tag = (gobject.timeout_add
565
(self.interval_milliseconds(),
566
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)
567
1035
# Schedule a disable() when 'timeout' has passed
568
self.disable_initiator_tag = (gobject.timeout_add
569
(self.timeout_milliseconds(),
570
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)
571
1040
# Also start a new checker *right now*.
572
1041
self.start_checker()
573
574
def checker_callback(self, pid, condition, command):
1042
1043
def checker_callback(self, source, condition, connection,
1044
command):
575
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()
576
1050
self.checker_callback_tag = None
577
1051
self.checker = None
578
if os.WIFEXITED(condition):
579
self.last_checker_status = os.WEXITSTATUS(condition)
1052
1053
if returncode >= 0:
1054
self.last_checker_status = returncode
1055
self.last_checker_signal = None
580
1056
if self.last_checker_status == 0:
581
1057
logger.info("Checker for %(name)s succeeded",
582
1058
vars(self))
583
1059
self.checked_ok()
584
1060
else:
585
logger.info("Checker for %(name)s failed",
586
vars(self))
1061
logger.info("Checker for %(name)s failed", vars(self))
587
1062
else:
588
1063
self.last_checker_status = -1
1064
self.last_checker_signal = -returncode
589
1065
logger.warning("Checker for %(name)s crashed?",
590
1066
vars(self))
591
592
def checked_ok(self, timeout=None):
593
"""Bump up the timeout for this client.
594
595
This should only be called when the client has been seen,
596
alive and well.
597
"""
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."""
598
1078
if timeout is None:
599
1079
timeout = self.timeout
600
self.last_checked_ok = datetime.datetime.utcnow()
601
1080
if self.disable_initiator_tag is not None:
602
gobject.source_remove(self.disable_initiator_tag)
1081
GLib.source_remove(self.disable_initiator_tag)
1082
self.disable_initiator_tag = None
603
1083
if getattr(self, "enabled", False):
604
self.disable_initiator_tag = (gobject.timeout_add
605
(timedelta_to_milliseconds
606
(timeout), self.disable))
1084
self.disable_initiator_tag = GLib.timeout_add(
1085
int(timeout.total_seconds() * 1000), self.disable)
607
1086
self.expires = datetime.datetime.utcnow() + timeout
608
1087
609
1088
def need_approval(self):
610
1089
self.last_approval_request = datetime.datetime.utcnow()
611
1090
612
1091
def start_checker(self):
613
1092
"""Start a new checker subprocess if one is not running.
614
1093
615
1094
If a checker already exists, leave it running and do
616
1095
nothing."""
617
1096
# The reason for not killing a running checker is that if we
618
# did that, then if a checker (for some reason) started
619
# running slowly and taking more than 'interval' time, the
620
# client would inevitably timeout, since no checker would get
621
# a chance to run to completion. If we instead leave running
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
622
1101
# checkers alone, the checker would have to take more time
623
1102
# than 'timeout' for the client to be disabled, which is as it
624
1103
# should be.
625
626
# If a checker exists, make sure it is not a zombie
627
try:
628
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
629
except (AttributeError, OSError) as error:
630
if (isinstance(error, OSError)
631
and error.errno != errno.ECHILD):
632
raise error
633
else:
634
if pid:
635
logger.warning("Checker was a zombie")
636
gobject.source_remove(self.checker_callback_tag)
637
self.checker_callback(pid, status,
638
self.current_checker_command)
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
639
1109
# Start a new checker if needed
640
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}
641
1115
try:
642
# In case checker_command has exactly one % operator
643
command = self.checker_command % self.host
644
except TypeError:
645
# Escape attributes for the shell
646
escaped_attrs = dict(
647
(attr,
648
re.escape(unicode(str(getattr(self, attr, "")),
649
errors=
650
'replace')))
651
for attr in
652
self.runtime_expansions)
653
654
try:
655
command = self.checker_command % escaped_attrs
656
except TypeError as error:
657
logger.error('Could not format string "%s":'
658
' %s', self.checker_command, error)
659
return True # Try again later
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
660
1122
self.current_checker_command = command
661
try:
662
logger.info("Starting checker %r for %s",
663
command, self.name)
664
# We don't need to redirect stdout and stderr, since
665
# in normal mode, that is already done by daemon(),
666
# and in debug mode we don't want to. (Stdin is
667
# always replaced by /dev/null.)
668
self.checker = subprocess.Popen(command,
669
close_fds=True,
670
shell=True, cwd="/")
671
self.checker_callback_tag = (gobject.child_watch_add
672
(self.checker.pid,
673
self.checker_callback,
674
data=command))
675
# The checker may have completed before the gobject
676
# watch was added. Check for this.
677
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
678
if pid:
679
gobject.source_remove(self.checker_callback_tag)
680
self.checker_callback(pid, status, command)
681
except OSError as error:
682
logger.error("Failed to start subprocess: %s",
683
error)
684
# Re-run this periodically if run by gobject.timeout_add
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
685
1149
return True
686
1150
687
1151
def stop_checker(self):
688
1152
"""Force the checker process, if any, to stop."""
689
1153
if self.checker_callback_tag:
690
gobject.source_remove(self.checker_callback_tag)
1154
GLib.source_remove(self.checker_callback_tag)
691
1155
self.checker_callback_tag = None
692
1156
if getattr(self, "checker", None) is None:
693
1157
return
694
1158
logger.debug("Stopping checker for %(name)s", vars(self))
695
try:
696
os.kill(self.checker.pid, signal.SIGTERM)
697
#time.sleep(0.5)
698
#if self.checker.poll() is None:
699
# os.kill(self.checker.pid, signal.SIGKILL)
700
except OSError as error:
701
if error.errno != errno.ESRCH: # No such process
702
raise
1159
self.checker.terminate()
703
1160
self.checker = None
704
1161
705
1162
706
def dbus_service_property(dbus_interface, signature="v",
707
access="readwrite", byte_arrays=False):
1163
def dbus_service_property(dbus_interface,
1164
signature="v",
1165
access="readwrite",
1166
byte_arrays=False):
708
1167
"""Decorators for marking methods of a DBusObjectWithProperties to
709
1168
become properties on the D-Bus.
710
1169
711
1170
The decorated method will be called with no arguments by "Get"
712
1171
and with one argument by "Set".
713
1172
714
1173
The parameters, where they are supported, are the same as
715
1174
dbus.service.method, except there is only "signature", since the
716
1175
type from Get() and the type sent to Set() is the same.
719
1178
# "Set" method, so we fail early here:
720
1179
if byte_arrays and signature != "ay":
721
1180
raise ValueError("Byte arrays not supported for non-'ay'"
722
" signature %r" % signature)
1181
" signature {!r}".format(signature))
1182
723
1183
def decorator(func):
724
1184
func._dbus_is_property = True
725
1185
func._dbus_interface = dbus_interface
728
1188
func._dbus_name = func.__name__
729
1189
if func._dbus_name.endswith("_dbus_property"):
730
1190
func._dbus_name = func._dbus_name[:-14]
731
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
732
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
733
1237
return decorator
734
1238
735
1239
736
1240
class DBusPropertyException(dbus.exceptions.DBusException):
737
1241
"""A base class for D-Bus property-related exceptions
738
1242
"""
739
def __unicode__(self):
740
return unicode(str(self))
1243
pass
741
1244
742
1245
743
1246
class DBusPropertyAccessException(DBusPropertyException):
752
1255
pass
753
1256
754
1257
755
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):
756
1348
"""A D-Bus object with properties.
757
1349
758
1350
Classes inheriting from this can use the dbus_service_property
759
1351
decorator to expose methods as D-Bus properties. It exposes the
760
1352
standard Get(), Set(), and GetAll() methods on the D-Bus.
761
1353
"""
762
763
@staticmethod
764
def _is_dbus_property(obj):
765
return getattr(obj, "_dbus_is_property", False)
766
767
def _get_all_dbus_properties(self):
768
"""Returns a generator of (name, attribute) pairs
769
"""
770
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
771
for cls in self.__class__.__mro__
772
for name, prop in
773
inspect.getmembers(cls, self._is_dbus_property))
774
1354
775
1355
def _get_dbus_property(self, interface_name, property_name):
776
1356
"""Returns a bound method if one exists which is a D-Bus
777
1357
property with the specified name and interface.
778
1358
"""
779
for cls in self.__class__.__mro__:
780
for name, value in (inspect.getmembers
781
(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")):
782
1362
if (value._dbus_name == property_name
783
1363
and value._dbus_interface == interface_name):
784
1364
return value.__get__(self)
785
1365
786
1366
# No such property
787
raise DBusPropertyNotFound(self.dbus_object_path + ":"
788
+ interface_name + "."
789
+ property_name)
790
791
@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",
792
1381
out_signature="v")
793
1382
def Get(self, interface_name, property_name):
794
1383
"""Standard D-Bus property Get() method, see D-Bus standard.
800
1389
if not hasattr(value, "variant_level"):
801
1390
return value
802
1391
return type(value)(value, variant_level=value.variant_level+1)
803
1392
804
1393
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
805
1394
def Set(self, interface_name, property_name, value):
806
1395
"""Standard D-Bus property Set() method, see D-Bus standard.
812
1401
# The byte_arrays option is not supported yet on
813
1402
# signatures other than "ay".
814
1403
if prop._dbus_signature != "ay":
815
raise ValueError
816
value = dbus.ByteArray(''.join(unichr(byte)
817
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))
818
1409
prop(value)
819
820
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1410
1411
@dbus.service.method(dbus.PROPERTIES_IFACE,
1412
in_signature="s",
821
1413
out_signature="a{sv}")
822
1414
def GetAll(self, interface_name):
823
1415
"""Standard D-Bus property GetAll() method, see D-Bus
824
1416
standard.
825
1417
826
1418
Note: Will not include properties with access="write".
827
1419
"""
828
1420
properties = {}
829
for name, prop in self._get_all_dbus_properties():
1421
for name, prop in self._get_all_dbus_things("property"):
830
1422
if (interface_name
831
1423
and interface_name != prop._dbus_interface):
832
1424
# Interface non-empty but did not match
838
1430
if not hasattr(value, "variant_level"):
839
1431
properties[name] = value
840
1432
continue
841
properties[name] = type(value)(value, variant_level=
842
value.variant_level+1)
1433
properties[name] = type(value)(
1434
value, variant_level=value.variant_level + 1)
843
1435
return dbus.Dictionary(properties, signature="sv")
844
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
845
1445
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
846
1446
out_signature="s",
847
1447
path_keyword='object_path',
848
1448
connection_keyword='connection')
849
1449
def Introspect(self, object_path, connection):
850
"""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.
851
1453
"""
852
xmlstring = dbus.service.Object.Introspect(self, object_path,
853
connection)
1454
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1455
object_path,
1456
connection)
854
1457
try:
855
1458
document = xml.dom.minidom.parseString(xmlstring)
1459
856
1460
def make_tag(document, name, prop):
857
1461
e = document.createElement("property")
858
1462
e.setAttribute("name", name)
859
1463
e.setAttribute("type", prop._dbus_signature)
860
1464
e.setAttribute("access", prop._dbus_access)
861
1465
return e
1466
862
1467
for if_tag in document.getElementsByTagName("interface"):
1468
# Add property tags
863
1469
for tag in (make_tag(document, name, prop)
864
1470
for name, prop
865
in self._get_all_dbus_properties()
1471
in self._get_all_dbus_things("property")
866
1472
if prop._dbus_interface
867
1473
== if_tag.getAttribute("name")):
868
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)
869
1491
# Add the names to the return values for the
870
1492
# "org.freedesktop.DBus.Properties" methods
871
1493
if (if_tag.getAttribute("name")
886
1508
except (AttributeError, xml.dom.DOMException,
887
1509
xml.parsers.expat.ExpatError) as error:
888
1510
logger.error("Failed to override Introspection method",
889
error)
890
return xmlstring
891
892
893
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):
894
1587
"""Convert a UTC datetime.datetime() to a D-Bus type."""
895
1588
if dt is None:
896
return dbus.String("", variant_level = variant_level)
897
return dbus.String(dt.isoformat(),
898
variant_level=variant_level)
899
900
901
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
902
.__metaclass__):
903
"""Applied to an empty subclass of a D-Bus object, this metaclass
904
will add additional D-Bus attributes matching a certain pattern.
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).
905
1615
"""
906
def __new__(mcs, name, bases, attr):
907
# Go through all the base classes which could have D-Bus
908
# methods, signals, or properties in them
909
for base in (b for b in bases
910
if issubclass(b, dbus.service.Object)):
911
# Go though all attributes of the base class
912
for attrname, attribute in inspect.getmembers(base):
1616
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):
913
1624
# Ignore non-D-Bus attributes, and D-Bus attributes
914
1625
# with the wrong interface name
915
1626
if (not hasattr(attribute, "_dbus_interface")
916
or not attribute._dbus_interface
917
.startswith("se.recompile.Mandos")):
1627
or not attribute._dbus_interface.startswith(
1628
orig_interface_name)):
918
1629
continue
919
1630
# Create an alternate D-Bus interface name based on
920
1631
# the current name
921
alt_interface = (attribute._dbus_interface
922
.replace("se.recompile.Mandos",
923
"se.bsnet.fukt.Mandos"))
1632
alt_interface = attribute._dbus_interface.replace(
1633
orig_interface_name, alt_interface_name)
1634
interface_names.add(alt_interface)
924
1635
# Is this a D-Bus signal?
925
1636
if getattr(attribute, "_dbus_is_signal", False):
926
# Extract the original non-method function by
927
# black magic
928
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(
929
1641
zip(attribute.func_code.co_freevars,
930
attribute.__closure__))["func"]
931
.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)
932
1649
# Create a new, but exactly alike, function
933
1650
# object, and decorate it to be a new D-Bus signal
934
1651
# with the alternate D-Bus interface name
935
new_function = (dbus.service.signal
936
(alt_interface,
937
attribute._dbus_signature)
938
(types.FunctionType(
939
nonmethod_func.func_code,
940
nonmethod_func.func_globals,
941
nonmethod_func.func_name,
942
nonmethod_func.func_defaults,
943
nonmethod_func.func_closure)))
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
944
1663
# Define a creator of a function to call both the
945
# old and new functions, so both the old and new
946
# 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
947
1667
def fixscope(func1, func2):
948
1668
"""This function is a scope container to pass
949
1669
func1 and func2 to the "call_both" function
950
1670
outside of its arguments"""
1671
1672
@functools.wraps(func2)
951
1673
def call_both(*args, **kwargs):
952
1674
"""This function will emit two D-Bus
953
1675
signals by calling func1 and func2"""
954
1676
func1(*args, **kwargs)
955
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
956
1684
return call_both
957
1685
# Create the "call_both" function and add it to
958
1686
# the class
959
attr[attrname] = fixscope(attribute,
960
new_function)
1687
attr[attrname] = fixscope(attribute, new_function)
961
1688
# Is this a D-Bus method?
962
1689
elif getattr(attribute, "_dbus_is_method", False):
963
1690
# Create a new, but exactly alike, function
964
1691
# object. Decorate it to be a new D-Bus method
965
1692
# with the alternate D-Bus interface name. Add it
966
1693
# to the class.
967
attr[attrname] = (dbus.service.method
968
(alt_interface,
969
attribute._dbus_in_signature,
970
attribute._dbus_out_signature)
971
(types.FunctionType
972
(attribute.func_code,
973
attribute.func_globals,
974
attribute.func_name,
975
attribute.func_defaults,
976
attribute.func_closure)))
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
977
1706
# Is this a D-Bus property?
978
1707
elif getattr(attribute, "_dbus_is_property", False):
979
1708
# Create a new, but exactly alike, function
980
1709
# object, and decorate it to be a new D-Bus
981
1710
# property with the alternate D-Bus interface
982
1711
# name. Add it to the class.
983
attr[attrname] = (dbus_service_property
984
(alt_interface,
985
attribute._dbus_signature,
986
attribute._dbus_access,
987
attribute
988
._dbus_get_args_options
989
["byte_arrays"])
990
(types.FunctionType
991
(attribute.func_code,
992
attribute.func_globals,
993
attribute.func_name,
994
attribute.func_defaults,
995
attribute.func_closure)))
996
return type.__new__(mcs, name, bases, attr)
997
998
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"})
999
1764
class ClientDBus(Client, DBusObjectWithProperties):
1000
1765
"""A Client class using D-Bus
1001
1766
1002
1767
Attributes:
1003
1768
dbus_object_path: dbus.ObjectPath
1004
1769
bus: dbus.SystemBus()
1005
1770
"""
1006
1771
1007
1772
runtime_expansions = (Client.runtime_expansions
1008
+ ("dbus_object_path",))
1009
1773
+ ("dbus_object_path", ))
1774
1775
_interface = "se.recompile.Mandos.Client"
1776
1010
1777
# dbus.service.Object doesn't use super(), so we can't either.
1011
1012
def __init__(self, bus = None, *args, **kwargs):
1778
1779
def __init__(self, bus=None, *args, **kwargs):
1013
1780
self.bus = bus
1014
1781
Client.__init__(self, *args, **kwargs)
1015
1016
self._approvals_pending = 0
1017
1782
# Only now, when this client is initialized, can it show up on
1018
1783
# the D-Bus
1019
client_object_name = unicode(self.name).translate(
1784
client_object_name = str(self.name).translate(
1020
1785
{ord("."): ord("_"),
1021
1786
ord("-"): ord("_")})
1022
self.dbus_object_path = (dbus.ObjectPath
1023
("/clients/" + client_object_name))
1787
self.dbus_object_path = dbus.ObjectPath(
1788
"/clients/" + client_object_name)
1024
1789
DBusObjectWithProperties.__init__(self, self.bus,
1025
1790
self.dbus_object_path)
1026
1027
def notifychangeproperty(transform_func,
1028
dbus_name, type_func=lambda x: x,
1029
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):
1030
1797
""" Modify a variable so that it's a property which announces
1031
1798
its changes to DBus.
1032
1799
1033
1800
transform_fun: Function that takes a value and a variant_level
1034
1801
and transforms it to a D-Bus type.
1035
1802
dbus_name: D-Bus name of the variable
1037
1804
to the D-Bus. Default: no transform
1038
1805
variant_level: D-Bus variant level. Default: 1
1039
1806
"""
1040
attrname = "_{0}".format(dbus_name)
1807
attrname = "_{}".format(dbus_name)
1808
1041
1809
def setter(self, value):
1042
1810
if hasattr(self, "dbus_object_path"):
1043
1811
if (not hasattr(self, attrname) or
1044
1812
type_func(getattr(self, attrname, None))
1045
1813
!= type_func(value)):
1046
dbus_value = transform_func(type_func(value),
1047
variant_level
1048
=variant_level)
1049
self.PropertyChanged(dbus.String(dbus_name),
1050
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())
1051
1829
setattr(self, attrname, value)
1052
1830
1053
1831
return property(lambda self: getattr(self, attrname), setter)
1054
1055
1832
1056
1833
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1057
1834
approvals_pending = notifychangeproperty(dbus.Boolean,
1058
1835
"ApprovalPending",
1059
type_func = bool)
1836
type_func=bool)
1060
1837
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1061
1838
last_enabled = notifychangeproperty(datetime_to_dbus,
1062
1839
"LastEnabled")
1063
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1064
type_func = lambda checker:
1065
checker is not None)
1840
checker = notifychangeproperty(
1841
dbus.Boolean, "CheckerRunning",
1842
type_func=lambda checker: checker is not None)
1066
1843
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1067
1844
"LastCheckedOK")
1845
last_checker_status = notifychangeproperty(dbus.Int16,
1846
"LastCheckerStatus")
1068
1847
last_approval_request = notifychangeproperty(
1069
1848
datetime_to_dbus, "LastApprovalRequest")
1070
1849
approved_by_default = notifychangeproperty(dbus.Boolean,
1071
1850
"ApprovedByDefault")
1072
approval_delay = notifychangeproperty(dbus.UInt64,
1073
"ApprovalDelay",
1074
type_func =
1075
timedelta_to_milliseconds)
1851
approval_delay = notifychangeproperty(
1852
dbus.UInt64, "ApprovalDelay",
1853
type_func=lambda td: td.total_seconds() * 1000)
1076
1854
approval_duration = notifychangeproperty(
1077
1855
dbus.UInt64, "ApprovalDuration",
1078
type_func = timedelta_to_milliseconds)
1856
type_func=lambda td: td.total_seconds() * 1000)
1079
1857
host = notifychangeproperty(dbus.String, "Host")
1080
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1081
type_func =
1082
timedelta_to_milliseconds)
1858
timeout = notifychangeproperty(
1859
dbus.UInt64, "Timeout",
1860
type_func=lambda td: td.total_seconds() * 1000)
1083
1861
extended_timeout = notifychangeproperty(
1084
1862
dbus.UInt64, "ExtendedTimeout",
1085
type_func = timedelta_to_milliseconds)
1086
interval = notifychangeproperty(dbus.UInt64,
1087
"Interval",
1088
type_func =
1089
timedelta_to_milliseconds)
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)
1090
1867
checker_command = notifychangeproperty(dbus.String, "Checker")
1091
1868
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1869
invalidate_only=True)
1870
1092
1871
del notifychangeproperty
1093
1872
1094
1873
def __del__(self, *args, **kwargs):
1095
1874
try:
1096
1875
self.remove_from_connection()
1099
1878
if hasattr(DBusObjectWithProperties, "__del__"):
1100
1879
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1101
1880
Client.__del__(self, *args, **kwargs)
1102
1103
def checker_callback(self, pid, condition, command,
1104
*args, **kwargs):
1105
self.checker_callback_tag = None
1106
self.checker = None
1107
if os.WIFEXITED(condition):
1108
exitstatus = os.WEXITSTATUS(condition)
1881
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:
1109
1889
# Emit D-Bus signal
1110
1890
self.CheckerCompleted(dbus.Int16(exitstatus),
1111
dbus.Int64(condition),
1891
# This is specific to GNU libC
1892
dbus.Int64(exitstatus << 8),
1112
1893
dbus.String(command))
1113
1894
else:
1114
1895
# Emit D-Bus signal
1115
1896
self.CheckerCompleted(dbus.Int16(-1),
1116
dbus.Int64(condition),
1897
dbus.Int64(
1898
# This is specific to GNU libC
1899
(exitstatus << 8)
1900
| self.last_checker_signal),
1117
1901
dbus.String(command))
1118
1119
return Client.checker_callback(self, pid, condition, command,
1120
*args, **kwargs)
1121
1902
return ret
1903
1122
1904
def start_checker(self, *args, **kwargs):
1123
old_checker = self.checker
1124
if self.checker is not None:
1125
old_checker_pid = self.checker.pid
1126
else:
1127
old_checker_pid = None
1905
old_checker_pid = getattr(self.checker, "pid", None)
1128
1906
r = Client.start_checker(self, *args, **kwargs)
1129
1907
# Only if new checker process was started
1130
1908
if (self.checker is not None
1132
1910
# Emit D-Bus signal
1133
1911
self.CheckerStarted(self.current_checker_command)
1134
1912
return r
1135
1913
1136
1914
def _reset_approved(self):
1137
1915
self.approved = None
1138
1916
return False
1139
1917
1140
1918
def approve(self, value=True):
1141
self.send_changedstate()
1142
1919
self.approved = value
1143
gobject.timeout_add(timedelta_to_milliseconds
1144
(self.approval_duration),
1145
self._reset_approved)
1146
1147
1148
## D-Bus methods, signals & properties
1149
_interface = "se.recompile.Mandos.Client"
1150
1151
## Signals
1152
1920
GLib.timeout_add(int(self.approval_duration.total_seconds()
1921
* 1000), self._reset_approved)
1922
self.send_changedstate()
1923
1924
# D-Bus methods, signals & properties
1925
1926
# Interfaces
1927
1928
# Signals
1929
1153
1930
# CheckerCompleted - signal
1154
1931
@dbus.service.signal(_interface, signature="nxs")
1155
1932
def CheckerCompleted(self, exitcode, waitstatus, command):
1156
1933
"D-Bus signal"
1157
1934
pass
1158
1935
1159
1936
# CheckerStarted - signal
1160
1937
@dbus.service.signal(_interface, signature="s")
1161
1938
def CheckerStarted(self, command):
1162
1939
"D-Bus signal"
1163
1940
pass
1164
1941
1165
1942
# PropertyChanged - signal
1943
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1166
1944
@dbus.service.signal(_interface, signature="sv")
1167
1945
def PropertyChanged(self, property, value):
1168
1946
"D-Bus signal"
1169
1947
pass
1170
1948
1171
1949
# GotSecret - signal
1172
1950
@dbus.service.signal(_interface)
1173
1951
def GotSecret(self):
1176
1954
server to mandos-client
1177
1955
"""
1178
1956
pass
1179
1957
1180
1958
# Rejected - signal
1181
1959
@dbus.service.signal(_interface, signature="s")
1182
1960
def Rejected(self, reason):
1183
1961
"D-Bus signal"
1184
1962
pass
1185
1963
1186
1964
# NeedApproval - signal
1187
1965
@dbus.service.signal(_interface, signature="tb")
1188
1966
def NeedApproval(self, timeout, default):
1189
1967
"D-Bus signal"
1190
1968
return self.need_approval()
1191
1192
# NeRwequest - signal
1193
@dbus.service.signal(_interface, signature="s")
1194
def NewRequest(self, ip):
1195
"""D-Bus signal
1196
Is sent after a client request a password.
1197
"""
1198
pass
1199
1200
## Methods
1201
1969
1970
# Methods
1971
1202
1972
# Approve - method
1203
1973
@dbus.service.method(_interface, in_signature="b")
1204
1974
def Approve(self, value):
1205
1975
self.approve(value)
1206
1976
1207
1977
# CheckedOK - method
1208
1978
@dbus.service.method(_interface)
1209
1979
def CheckedOK(self):
1210
1980
self.checked_ok()
1211
1981
1212
1982
# Enable - method
1983
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1213
1984
@dbus.service.method(_interface)
1214
1985
def Enable(self):
1215
1986
"D-Bus method"
1216
1987
self.enable()
1217
1988
1218
1989
# StartChecker - method
1990
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1219
1991
@dbus.service.method(_interface)
1220
1992
def StartChecker(self):
1221
1993
"D-Bus method"
1222
1994
self.start_checker()
1223
1995
1224
1996
# Disable - method
1997
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1225
1998
@dbus.service.method(_interface)
1226
1999
def Disable(self):
1227
2000
"D-Bus method"
1228
2001
self.disable()
1229
2002
1230
2003
# StopChecker - method
2004
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1231
2005
@dbus.service.method(_interface)
1232
2006
def StopChecker(self):
1233
2007
self.stop_checker()
1234
1235
## Properties
1236
2008
2009
# Properties
2010
1237
2011
# ApprovalPending - property
1238
2012
@dbus_service_property(_interface, signature="b", access="read")
1239
2013
def ApprovalPending_dbus_property(self):
1240
2014
return dbus.Boolean(bool(self.approvals_pending))
1241
2015
1242
2016
# ApprovedByDefault - property
1243
@dbus_service_property(_interface, signature="b",
2017
@dbus_service_property(_interface,
2018
signature="b",
1244
2019
access="readwrite")
1245
2020
def ApprovedByDefault_dbus_property(self, value=None):
1246
2021
if value is None: # get
1247
2022
return dbus.Boolean(self.approved_by_default)
1248
2023
self.approved_by_default = bool(value)
1249
2024
1250
2025
# ApprovalDelay - property
1251
@dbus_service_property(_interface, signature="t",
2026
@dbus_service_property(_interface,
2027
signature="t",
1252
2028
access="readwrite")
1253
2029
def ApprovalDelay_dbus_property(self, value=None):
1254
2030
if value is None: # get
1255
return dbus.UInt64(self.approval_delay_milliseconds())
2031
return dbus.UInt64(self.approval_delay.total_seconds()
2032
* 1000)
1256
2033
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1257
2034
1258
2035
# ApprovalDuration - property
1259
@dbus_service_property(_interface, signature="t",
2036
@dbus_service_property(_interface,
2037
signature="t",
1260
2038
access="readwrite")
1261
2039
def ApprovalDuration_dbus_property(self, value=None):
1262
2040
if value is None: # get
1263
return dbus.UInt64(timedelta_to_milliseconds(
1264
self.approval_duration))
2041
return dbus.UInt64(self.approval_duration.total_seconds()
2042
* 1000)
1265
2043
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1266
2044
1267
2045
# Name - property
2046
@dbus_annotations(
2047
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1268
2048
@dbus_service_property(_interface, signature="s", access="read")
1269
2049
def Name_dbus_property(self):
1270
2050
return dbus.String(self.name)
1271
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
1272
2059
# Fingerprint - property
2060
@dbus_annotations(
2061
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1273
2062
@dbus_service_property(_interface, signature="s", access="read")
1274
2063
def Fingerprint_dbus_property(self):
1275
2064
return dbus.String(self.fingerprint)
1276
2065
1277
2066
# Host - property
1278
@dbus_service_property(_interface, signature="s",
2067
@dbus_service_property(_interface,
2068
signature="s",
1279
2069
access="readwrite")
1280
2070
def Host_dbus_property(self, value=None):
1281
2071
if value is None: # get
1282
2072
return dbus.String(self.host)
1283
self.host = unicode(value)
1284
2073
self.host = str(value)
2074
1285
2075
# Created - property
2076
@dbus_annotations(
2077
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1286
2078
@dbus_service_property(_interface, signature="s", access="read")
1287
2079
def Created_dbus_property(self):
1288
2080
return datetime_to_dbus(self.created)
1289
2081
1290
2082
# LastEnabled - property
1291
2083
@dbus_service_property(_interface, signature="s", access="read")
1292
2084
def LastEnabled_dbus_property(self):
1293
2085
return datetime_to_dbus(self.last_enabled)
1294
2086
1295
2087
# Enabled - property
1296
@dbus_service_property(_interface, signature="b",
2088
@dbus_service_property(_interface,
2089
signature="b",
1297
2090
access="readwrite")
1298
2091
def Enabled_dbus_property(self, value=None):
1299
2092
if value is None: # get
1302
2095
self.enable()
1303
2096
else:
1304
2097
self.disable()
1305
2098
1306
2099
# LastCheckedOK - property
1307
@dbus_service_property(_interface, signature="s",
2100
@dbus_service_property(_interface,
2101
signature="s",
1308
2102
access="readwrite")
1309
2103
def LastCheckedOK_dbus_property(self, value=None):
1310
2104
if value is not None:
1311
2105
self.checked_ok()
1312
2106
return
1313
2107
return datetime_to_dbus(self.last_checked_ok)
1314
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
1315
2114
# Expires - property
1316
2115
@dbus_service_property(_interface, signature="s", access="read")
1317
2116
def Expires_dbus_property(self):
1318
2117
return datetime_to_dbus(self.expires)
1319
2118
1320
2119
# LastApprovalRequest - property
1321
2120
@dbus_service_property(_interface, signature="s", access="read")
1322
2121
def LastApprovalRequest_dbus_property(self):
1323
2122
return datetime_to_dbus(self.last_approval_request)
1324
2123
1325
2124
# Timeout - property
1326
@dbus_service_property(_interface, signature="t",
2125
@dbus_service_property(_interface,
2126
signature="t",
1327
2127
access="readwrite")
1328
2128
def Timeout_dbus_property(self, value=None):
1329
2129
if value is None: # get
1330
return dbus.UInt64(self.timeout_milliseconds())
2130
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2131
old_timeout = self.timeout
1331
2132
self.timeout = datetime.timedelta(0, 0, 0, value)
1332
if getattr(self, "disable_initiator_tag", None) is None:
1333
return
1334
# Reschedule timeout
1335
gobject.source_remove(self.disable_initiator_tag)
1336
self.disable_initiator_tag = None
1337
self.expires = None
1338
time_to_die = timedelta_to_milliseconds((self
1339
.last_checked_ok
1340
+ self.timeout)
1341
- datetime.datetime
1342
.utcnow())
1343
if time_to_die <= 0:
1344
# The timeout has passed
1345
self.disable()
1346
else:
1347
self.expires = (datetime.datetime.utcnow()
1348
+ datetime.timedelta(milliseconds =
1349
time_to_die))
1350
self.disable_initiator_tag = (gobject.timeout_add
1351
(time_to_die, self.disable))
1352
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
1353
2149
# ExtendedTimeout - property
1354
@dbus_service_property(_interface, signature="t",
2150
@dbus_service_property(_interface,
2151
signature="t",
1355
2152
access="readwrite")
1356
2153
def ExtendedTimeout_dbus_property(self, value=None):
1357
2154
if value is None: # get
1358
return dbus.UInt64(self.extended_timeout_milliseconds())
2155
return dbus.UInt64(self.extended_timeout.total_seconds()
2156
* 1000)
1359
2157
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1360
2158
1361
2159
# Interval - property
1362
@dbus_service_property(_interface, signature="t",
2160
@dbus_service_property(_interface,
2161
signature="t",
1363
2162
access="readwrite")
1364
2163
def Interval_dbus_property(self, value=None):
1365
2164
if value is None: # get
1366
return dbus.UInt64(self.interval_milliseconds())
2165
return dbus.UInt64(self.interval.total_seconds() * 1000)
1367
2166
self.interval = datetime.timedelta(0, 0, 0, value)
1368
2167
if getattr(self, "checker_initiator_tag", None) is None:
1369
2168
return
1370
2169
if self.enabled:
1371
2170
# Reschedule checker run
1372
gobject.source_remove(self.checker_initiator_tag)
1373
self.checker_initiator_tag = (gobject.timeout_add
1374
(value, self.start_checker))
1375
self.start_checker() # Start one now, too
1376
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
1377
2176
# Checker - property
1378
@dbus_service_property(_interface, signature="s",
2177
@dbus_service_property(_interface,
2178
signature="s",
1379
2179
access="readwrite")
1380
2180
def Checker_dbus_property(self, value=None):
1381
2181
if value is None: # get
1382
2182
return dbus.String(self.checker_command)
1383
self.checker_command = unicode(value)
1384
2183
self.checker_command = str(value)
2184
1385
2185
# CheckerRunning - property
1386
@dbus_service_property(_interface, signature="b",
2186
@dbus_service_property(_interface,
2187
signature="b",
1387
2188
access="readwrite")
1388
2189
def CheckerRunning_dbus_property(self, value=None):
1389
2190
if value is None: # get
1392
2193
self.start_checker()
1393
2194
else:
1394
2195
self.stop_checker()
1395
2196
1396
2197
# ObjectPath - property
2198
@dbus_annotations(
2199
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2200
"org.freedesktop.DBus.Deprecated": "true"})
1397
2201
@dbus_service_property(_interface, signature="o", access="read")
1398
2202
def ObjectPath_dbus_property(self):
1399
return self.dbus_object_path # is already a dbus.ObjectPath
1400
2203
return self.dbus_object_path # is already a dbus.ObjectPath
2204
1401
2205
# Secret = property
1402
@dbus_service_property(_interface, signature="ay",
1403
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)
1404
2213
def Secret_dbus_property(self, value):
1405
self.secret = str(value)
1406
2214
self.secret = bytes(value)
2215
1407
2216
del _interface
1408
2217
1409
2218
1410
class ProxyClient(object):
1411
def __init__(self, child_pipe, fpr, address):
2219
class ProxyClient:
2220
def __init__(self, child_pipe, key_id, fpr, address):
1412
2221
self._pipe = child_pipe
1413
self._pipe.send(('init', fpr, address))
2222
self._pipe.send(('init', key_id, fpr, address))
1414
2223
if not self._pipe.recv():
1415
raise KeyError()
1416
2224
raise KeyError(key_id or fpr)
2225
1417
2226
def __getattribute__(self, name):
1418
2227
if name == '_pipe':
1419
2228
return super(ProxyClient, self).__getattribute__(name)
1422
2231
if data[0] == 'data':
1423
2232
return data[1]
1424
2233
if data[0] == 'function':
2234
1425
2235
def func(*args, **kwargs):
1426
2236
self._pipe.send(('funcall', name, args, kwargs))
1427
2237
return self._pipe.recv()[1]
2238
1428
2239
return func
1429
2240
1430
2241
def __setattr__(self, name, value):
1431
2242
if name == '_pipe':
1432
2243
return super(ProxyClient, self).__setattr__(name, value)
1433
2244
self._pipe.send(('setattr', name, value))
1434
2245
1435
2246
1436
class ClientDBusTransitional(ClientDBus):
1437
__metaclass__ = AlternateDBusNamesMetaclass
1438
1439
1440
2247
class ClientHandler(socketserver.BaseRequestHandler, object):
1441
2248
"""A class to handle client connections.
1442
2249
1443
2250
Instantiated once for each connection to handle it.
1444
2251
Note: This will run in its own forked process."""
1445
2252
1446
2253
def handle(self):
1447
2254
with contextlib.closing(self.server.child_pipe) as child_pipe:
1448
2255
logger.info("TCP connection from: %s",
1449
unicode(self.client_address))
2256
str(self.client_address))
1450
2257
logger.debug("Pipe FD: %d",
1451
2258
self.server.child_pipe.fileno())
1452
1453
session = (gnutls.connection
1454
.ClientSession(self.request,
1455
gnutls.connection
1456
.X509Credentials()))
1457
1458
# Note: gnutls.connection.X509Credentials is really a
1459
# generic GnuTLS certificate credentials object so long as
1460
# no X.509 keys are added to it. Therefore, we can use it
1461
# here despite using OpenPGP certificates.
1462
1463
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1464
# "+AES-256-CBC", "+SHA1",
1465
# "+COMP-NULL", "+CTYPE-OPENPGP",
1466
# "+DHE-DSS"))
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"))
1467
2266
# Use a fallback default, since this MUST be set.
1468
2267
priority = self.server.gnutls_priority
1469
2268
if priority is None:
1470
2269
priority = "NORMAL"
1471
(gnutls.library.functions
1472
.gnutls_priority_set_direct(session._c_object,
1473
priority, None))
1474
2270
gnutls.priority_set_direct(session._c_object,
2271
priority.encode("utf-8"),
2272
None)
2273
1475
2274
# Start communication using the Mandos protocol
1476
2275
# Get protocol number
1477
2276
line = self.request.makefile().readline()
1478
2277
logger.debug("Protocol version: %r", line)
1479
2278
try:
1480
2279
if int(line.strip().split()[0]) > 1:
1481
raise RuntimeError
2280
raise RuntimeError(line)
1482
2281
except (ValueError, IndexError, RuntimeError) as error:
1483
2282
logger.error("Unknown protocol version: %s", error)
1484
2283
return
1485
2284
1486
2285
# Start GnuTLS connection
1487
2286
try:
1488
2287
session.handshake()
1489
except gnutls.errors.GNUTLSError as error:
2288
except gnutls.Error as error:
1490
2289
logger.warning("Handshake failed: %s", error)
1491
2290
# Do not run session.bye() here: the session is not
1492
2291
# established. Just abandon the request.
1493
2292
return
1494
2293
logger.debug("Handshake succeeded")
1495
2294
1496
2295
approval_required = False
1497
2296
try:
1498
try:
1499
fpr = self.fingerprint(self.peer_certificate
1500
(session))
1501
except (TypeError,
1502
gnutls.errors.GNUTLSError) as error:
1503
logger.warning("Bad certificate: %s", error)
1504
return
1505
logger.debug("Fingerprint: %s", fpr)
1506
1507
try:
1508
client = ProxyClient(child_pipe, fpr,
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,
1509
2319
self.client_address)
1510
2320
except KeyError:
1511
2321
return
1512
1513
if self.server.use_dbus:
1514
# Emit D-Bus signal
1515
client.NewRequest(str(self.client_address))
1516
2322
1517
2323
if client.approval_delay:
1518
2324
delay = client.approval_delay
1519
2325
client.approvals_pending += 1
1520
2326
approval_required = True
1521
2327
1522
2328
while True:
1523
2329
if not client.enabled:
1524
2330
logger.info("Client %s is disabled",
1525
client.name)
2331
client.name)
1526
2332
if self.server.use_dbus:
1527
2333
# Emit D-Bus signal
1528
2334
client.Rejected("Disabled")
1529
2335
return
1530
2336
1531
2337
if client.approved or not client.approval_delay:
1532
#We are approved or approval is disabled
2338
# We are approved or approval is disabled
1533
2339
break
1534
2340
elif client.approved is None:
1535
2341
logger.info("Client %s needs approval",
1537
2343
if self.server.use_dbus:
1538
2344
# Emit D-Bus signal
1539
2345
client.NeedApproval(
1540
client.approval_delay_milliseconds(),
1541
client.approved_by_default)
2346
client.approval_delay.total_seconds()
2347
* 1000, client.approved_by_default)
1542
2348
else:
1543
2349
logger.warning("Client %s was not approved",
1544
2350
client.name)
1546
2352
# Emit D-Bus signal
1547
2353
client.Rejected("Denied")
1548
2354
return
1549
1550
#wait until timeout or approved
2355
2356
# wait until timeout or approved
1551
2357
time = datetime.datetime.now()
1552
2358
client.changedstate.acquire()
1553
(client.changedstate.wait
1554
(float(client.timedelta_to_milliseconds(delay)
1555
/ 1000)))
2359
client.changedstate.wait(delay.total_seconds())
1556
2360
client.changedstate.release()
1557
2361
time2 = datetime.datetime.now()
1558
2362
if (time2 - time) >= delay:
1568
2372
break
1569
2373
else:
1570
2374
delay -= time2 - time
1571
1572
sent_size = 0
1573
while sent_size < len(client.secret):
1574
try:
1575
sent = session.send(client.secret[sent_size:])
1576
except gnutls.errors.GNUTLSError as error:
1577
logger.warning("gnutls send failed")
1578
return
1579
logger.debug("Sent: %d, remaining: %d",
1580
sent, len(client.secret)
1581
- (sent_size + sent))
1582
sent_size += sent
1583
2375
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
1584
2383
logger.info("Sending secret to %s", client.name)
1585
2384
# bump the timeout using extended_timeout
1586
client.checked_ok(client.extended_timeout)
2385
client.bump_timeout(client.extended_timeout)
1587
2386
if self.server.use_dbus:
1588
2387
# Emit D-Bus signal
1589
2388
client.GotSecret()
1590
2389
1591
2390
finally:
1592
2391
if approval_required:
1593
2392
client.approvals_pending -= 1
1594
2393
try:
1595
2394
session.bye()
1596
except gnutls.errors.GNUTLSError as error:
1597
logger.warning("GnuTLS bye failed")
1598
2395
except gnutls.Error as error:
2396
logger.warning("GnuTLS bye failed",
2397
exc_info=error)
2398
1599
2399
@staticmethod
1600
2400
def peer_certificate(session):
1601
"Return the peer's OpenPGP certificate as a bytestring"
1602
# If not an OpenPGP certificate...
1603
if (gnutls.library.functions
1604
.gnutls_certificate_type_get(session._c_object)
1605
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1606
# ...do the normal thing
1607
return session.peer_certificate
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""
1608
2417
list_size = ctypes.c_uint(1)
1609
cert_list = (gnutls.library.functions
1610
.gnutls_certificate_get_peers
2418
cert_list = (gnutls.certificate_get_peers
1611
2419
(session._c_object, ctypes.byref(list_size)))
1612
2420
if not bool(cert_list) and list_size.value != 0:
1613
raise gnutls.errors.GNUTLSError("error getting peer"
1614
" certificate")
2421
raise gnutls.Error("error getting peer certificate")
1615
2422
if list_size.value == 0:
1616
2423
return None
1617
2424
cert = cert_list[0]
1618
2425
return ctypes.string_at(cert.data, cert.size)
1619
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
1620
2461
@staticmethod
1621
2462
def fingerprint(openpgp):
1622
2463
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1623
2464
# New GnuTLS "datum" with the OpenPGP public key
1624
datum = (gnutls.library.types
1625
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1626
ctypes.POINTER
1627
(ctypes.c_ubyte)),
1628
ctypes.c_uint(len(openpgp))))
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)))
1629
2469
# New empty GnuTLS certificate
1630
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1631
(gnutls.library.functions
1632
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2470
crt = gnutls.openpgp_crt_t()
2471
gnutls.openpgp_crt_init(ctypes.byref(crt))
1633
2472
# Import the OpenPGP public key into the certificate
1634
(gnutls.library.functions
1635
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1636
gnutls.library.constants
1637
.GNUTLS_OPENPGP_FMT_RAW))
2473
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2474
gnutls.OPENPGP_FMT_RAW)
1638
2475
# Verify the self signature in the key
1639
2476
crtverify = ctypes.c_uint()
1640
(gnutls.library.functions
1641
.gnutls_openpgp_crt_verify_self(crt, 0,
1642
ctypes.byref(crtverify)))
2477
gnutls.openpgp_crt_verify_self(crt, 0,
2478
ctypes.byref(crtverify))
1643
2479
if crtverify.value != 0:
1644
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1645
raise (gnutls.errors.CertificateSecurityError
1646
("Verify failed"))
2480
gnutls.openpgp_crt_deinit(crt)
2481
raise gnutls.CertificateSecurityError(code
2482
=crtverify.value)
1647
2483
# New buffer for the fingerprint
1648
2484
buf = ctypes.create_string_buffer(20)
1649
2485
buf_len = ctypes.c_size_t()
1650
2486
# Get the fingerprint from the certificate into the buffer
1651
(gnutls.library.functions
1652
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1653
ctypes.byref(buf_len)))
2487
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2488
ctypes.byref(buf_len))
1654
2489
# Deinit the certificate
1655
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2490
gnutls.openpgp_crt_deinit(crt)
1656
2491
# Convert the buffer to a Python bytestring
1657
2492
fpr = ctypes.string_at(buf, buf_len.value)
1658
2493
# Convert the bytestring to hexadecimal notation
1660
2495
return hex_fpr
1661
2496
1662
2497
1663
class MultiprocessingMixIn(object):
2498
class MultiprocessingMixIn:
1664
2499
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2500
1665
2501
def sub_process_main(self, request, address):
1666
2502
try:
1667
2503
self.finish_request(request, address)
1668
except:
2504
except Exception:
1669
2505
self.handle_error(request, address)
1670
2506
self.close_request(request)
1671
2507
1672
2508
def process_request(self, request, address):
1673
2509
"""Start a new process to process the request."""
1674
proc = multiprocessing.Process(target = self.sub_process_main,
1675
args = (request,
1676
address))
2510
proc = multiprocessing.Process(target=self.sub_process_main,
2511
args=(request, address))
1677
2512
proc.start()
1678
2513
return proc
1679
2514
1680
2515
1681
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2516
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1682
2517
""" adds a pipe to the MixIn """
2518
1683
2519
def process_request(self, request, client_address):
1684
2520
"""Overrides and wraps the original process_request().
1685
2521
1686
2522
This function creates a new pipe in self.pipe
1687
2523
"""
1688
2524
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1689
2525
1690
2526
proc = MultiprocessingMixIn.process_request(self, request,
1691
2527
client_address)
1692
2528
self.child_pipe.close()
1693
2529
self.add_pipe(parent_pipe, proc)
1694
2530
1695
2531
def add_pipe(self, parent_pipe, proc):
1696
2532
"""Dummy function; override as necessary"""
1697
raise NotImplementedError
2533
raise NotImplementedError()
1698
2534
1699
2535
1700
2536
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1701
socketserver.TCPServer, object):
2537
socketserver.TCPServer):
1702
2538
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1703
2539
1704
2540
Attributes:
1705
2541
enabled: Boolean; whether this server is activated yet
1706
2542
interface: None or a network interface name (string)
1707
2543
use_ipv6: Boolean; to use IPv6 or not
1708
2544
"""
2545
1709
2546
def __init__(self, server_address, RequestHandlerClass,
1710
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
"""
1711
2553
self.interface = interface
1712
2554
if use_ipv6:
1713
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.
1714
2583
socketserver.TCPServer.__init__(self, server_address,
1715
2584
RequestHandlerClass)
2585
1716
2586
def server_bind(self):
1717
2587
"""This overrides the normal server_bind() function
1718
2588
to bind to an interface if one was specified, and also NOT to
1719
2589
bind to an address or port if they were not specified."""
2590
global SO_BINDTODEVICE
1720
2591
if self.interface is not None:
1721
2592
if SO_BINDTODEVICE is None:
1722
logger.error("SO_BINDTODEVICE does not exist;"
1723
" cannot bind to interface %s",
1724
self.interface)
1725
else:
1726
try:
1727
self.socket.setsockopt(socket.SOL_SOCKET,
1728
SO_BINDTODEVICE,
1729
str(self.interface
1730
+ '\0'))
1731
except socket.error as error:
1732
if error[0] == errno.EPERM:
1733
logger.error("No permission to"
1734
" bind to interface %s",
1735
self.interface)
1736
elif error[0] == errno.ENOPROTOOPT:
1737
logger.error("SO_BINDTODEVICE not available;"
1738
" cannot bind to interface %s",
1739
self.interface)
1740
else:
1741
raise
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
1742
2614
# Only bind(2) the socket if we really need to.
1743
2615
if self.server_address[0] or self.server_address[1]:
2616
if self.server_address[1]:
2617
self.allow_reuse_address = True
1744
2618
if not self.server_address[0]:
1745
2619
if self.address_family == socket.AF_INET6:
1746
any_address = "::" # in6addr_any
2620
any_address = "::" # in6addr_any
1747
2621
else:
1748
any_address = socket.INADDR_ANY
2622
any_address = "0.0.0.0" # INADDR_ANY
1749
2623
self.server_address = (any_address,
1750
2624
self.server_address[1])
1751
2625
elif not self.server_address[1]:
1752
self.server_address = (self.server_address[0],
1753
0)
2626
self.server_address = (self.server_address[0], 0)
1754
2627
# if self.interface:
1755
2628
# self.server_address = (self.server_address[0],
1756
2629
# 0, # port
1762
2635
1763
2636
class MandosServer(IPv6_TCPServer):
1764
2637
"""Mandos server.
1765
2638
1766
2639
Attributes:
1767
2640
clients: set of Client objects
1768
2641
gnutls_priority GnuTLS priority string
1769
2642
use_dbus: Boolean; to emit D-Bus signals or not
1770
1771
Assumes a gobject.MainLoop event loop.
2643
2644
Assumes a GLib.MainLoop event loop.
1772
2645
"""
2646
1773
2647
def __init__(self, server_address, RequestHandlerClass,
1774
interface=None, use_ipv6=True, clients=None,
1775
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):
1776
2654
self.enabled = False
1777
2655
self.clients = clients
1778
2656
if self.clients is None:
1781
2659
self.gnutls_priority = gnutls_priority
1782
2660
IPv6_TCPServer.__init__(self, server_address,
1783
2661
RequestHandlerClass,
1784
interface = interface,
1785
use_ipv6 = use_ipv6)
2662
interface=interface,
2663
use_ipv6=use_ipv6,
2664
socketfd=socketfd)
2665
1786
2666
def server_activate(self):
1787
2667
if self.enabled:
1788
2668
return socketserver.TCPServer.server_activate(self)
1789
2669
1790
2670
def enable(self):
1791
2671
self.enabled = True
1792
2672
1793
2673
def add_pipe(self, parent_pipe, proc):
1794
2674
# Call "handle_ipc" for both data and EOF events
1795
gobject.io_add_watch(parent_pipe.fileno(),
1796
gobject.IO_IN | gobject.IO_HUP,
1797
functools.partial(self.handle_ipc,
1798
parent_pipe =
1799
parent_pipe,
1800
proc = proc))
1801
1802
def handle_ipc(self, source, condition, parent_pipe=None,
1803
proc = None, client_object=None):
1804
condition_names = {
1805
gobject.IO_IN: "IN", # There is data to read.
1806
gobject.IO_OUT: "OUT", # Data can be written (without
1807
# blocking).
1808
gobject.IO_PRI: "PRI", # There is urgent data to read.
1809
gobject.IO_ERR: "ERR", # Error condition.
1810
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1811
# broken, usually for pipes and
1812
# sockets).
1813
}
1814
conditions_string = ' | '.join(name
1815
for cond, name in
1816
condition_names.iteritems()
1817
if cond & condition)
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):
1818
2686
# error, or the other end of multiprocessing.Pipe has closed
1819
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2687
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1820
2688
# Wait for other process to exit
1821
2689
proc.join()
1822
2690
return False
1823
2691
1824
2692
# Read a request from the child
1825
2693
request = parent_pipe.recv()
1826
2694
command = request[0]
1827
2695
1828
2696
if command == 'init':
1829
fpr = request[1]
1830
address = request[2]
1831
1832
for c in self.clients.itervalues():
1833
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:
1834
2708
client = c
1835
2709
break
1836
2710
else:
1837
logger.info("Client not found for fingerprint: %s, ad"
1838
"dress: %s", fpr, address)
2711
logger.info("Client not found for key ID: %s, address"
2712
": %s", key_id or fpr, address)
1839
2713
if self.use_dbus:
1840
2714
# Emit D-Bus signal
1841
mandos_dbus_service.ClientNotFound(fpr,
2715
mandos_dbus_service.ClientNotFound(key_id or fpr,
1842
2716
address[0])
1843
2717
parent_pipe.send(False)
1844
2718
return False
1845
1846
gobject.io_add_watch(parent_pipe.fileno(),
1847
gobject.IO_IN | gobject.IO_HUP,
1848
functools.partial(self.handle_ipc,
1849
parent_pipe =
1850
parent_pipe,
1851
proc = proc,
1852
client_object =
1853
client))
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))
1854
2727
parent_pipe.send(True)
1855
2728
# remove the old hook in favor of the new above hook on
1856
2729
# same fileno
1859
2732
funcname = request[1]
1860
2733
args = request[2]
1861
2734
kwargs = request[3]
1862
2735
1863
2736
parent_pipe.send(('data', getattr(client_object,
1864
2737
funcname)(*args,
1865
**kwargs)))
1866
2738
**kwargs)))
2739
1867
2740
if command == 'getattr':
1868
2741
attrname = request[1]
1869
if callable(client_object.__getattribute__(attrname)):
1870
parent_pipe.send(('function',))
2742
if isinstance(client_object.__getattribute__(attrname),
2743
collections.Callable):
2744
parent_pipe.send(('function', ))
1871
2745
else:
1872
parent_pipe.send(('data', client_object
1873
.__getattribute__(attrname)))
1874
2746
parent_pipe.send((
2747
'data', client_object.__getattribute__(attrname)))
2748
1875
2749
if command == 'setattr':
1876
2750
attrname = request[1]
1877
2751
value = request[2]
1878
2752
setattr(client_object, attrname, value)
1879
2753
1880
2754
return True
1881
2755
1882
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
1883
2856
def string_to_delta(interval):
1884
2857
"""Parse a string and return a datetime.timedelta
1885
2858
1886
2859
>>> string_to_delta('7d')
1887
2860
datetime.timedelta(7)
1888
2861
>>> string_to_delta('60s')
1896
2869
>>> string_to_delta('5m 30s')
1897
2870
datetime.timedelta(0, 330)
1898
2871
"""
2872
2873
try:
2874
return rfc3339_duration_to_delta(interval)
2875
except ValueError:
2876
pass
2877
1899
2878
timevalue = datetime.timedelta(0)
1900
2879
for s in interval.split():
1901
2880
try:
1902
suffix = unicode(s[-1])
2881
suffix = s[-1]
1903
2882
value = int(s[:-1])
1904
2883
if suffix == "d":
1905
2884
delta = datetime.timedelta(value)
1912
2891
elif suffix == "w":
1913
2892
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1914
2893
else:
1915
raise ValueError("Unknown suffix %r" % suffix)
1916
except (ValueError, IndexError) as e:
2894
raise ValueError("Unknown suffix {!r}".format(suffix))
2895
except IndexError as e:
1917
2896
raise ValueError(*(e.args))
1918
2897
timevalue += delta
1919
2898
return timevalue
1920
2899
1921
2900
1922
def daemon(nochdir = False, noclose = False):
2901
def daemon(nochdir=False, noclose=False):
1923
2902
"""See daemon(3). Standard BSD Unix function.
1924
2903
1925
2904
This should really exist as os.daemon, but it doesn't (yet)."""
1926
2905
if os.fork():
1927
2906
sys.exit()
1932
2911
sys.exit()
1933
2912
if not noclose:
1934
2913
# Close all standard open file descriptors
1935
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2914
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1936
2915
if not stat.S_ISCHR(os.fstat(null).st_mode):
1937
2916
raise OSError(errno.ENODEV,
1938
"%s not a character device"
1939
% os.path.devnull)
2917
"{} not a character device"
2918
.format(os.devnull))
1940
2919
os.dup2(null, sys.stdin.fileno())
1941
2920
os.dup2(null, sys.stdout.fileno())
1942
2921
os.dup2(null, sys.stderr.fileno())
1945
2924
1946
2925
1947
2926
def main():
1948
2927
1949
2928
##################################################################
1950
2929
# Parsing of options, both command line and config file
1951
2930
1952
2931
parser = argparse.ArgumentParser()
1953
2932
parser.add_argument("-v", "--version", action="version",
1954
version = "%%(prog)s %s" % version,
2933
version="%(prog)s {}".format(version),
1955
2934
help="show version number and exit")
1956
2935
parser.add_argument("-i", "--interface", metavar="IF",
1957
2936
help="Bind to interface IF")
1963
2942
help="Run self-test")
1964
2943
parser.add_argument("--debug", action="store_true",
1965
2944
help="Debug mode; run in foreground and log"
1966
" to terminal")
2945
" to terminal", default=None)
1967
2946
parser.add_argument("--debuglevel", metavar="LEVEL",
1968
2947
help="Debug level for stdout output")
1969
2948
parser.add_argument("--priority", help="GnuTLS"
1976
2955
" files")
1977
2956
parser.add_argument("--no-dbus", action="store_false",
1978
2957
dest="use_dbus", help="Do not provide D-Bus"
1979
" system bus interface")
2958
" system bus interface", default=None)
1980
2959
parser.add_argument("--no-ipv6", action="store_false",
1981
dest="use_ipv6", help="Do not use IPv6")
2960
dest="use_ipv6", help="Do not use IPv6",
2961
default=None)
1982
2962
parser.add_argument("--no-restore", action="store_false",
1983
2963
dest="restore", help="Do not restore stored"
1984
" state")
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")
1985
2968
parser.add_argument("--statedir", metavar="DIR",
1986
2969
help="Directory to save/restore state in")
1987
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
1988
2976
options = parser.parse_args()
1989
2977
1990
2978
if options.check:
1991
2979
import doctest
1992
doctest.testmod()
1993
sys.exit()
1994
2980
fail_count, test_count = doctest.testmod()
2981
sys.exit(os.EX_OK if fail_count == 0 else 1)
2982
1995
2983
# Default values for config file for server-global settings
1996
server_defaults = { "interface": "",
1997
"address": "",
1998
"port": "",
1999
"debug": "False",
2000
"priority":
2001
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2002
"servicename": "Mandos",
2003
"use_dbus": "True",
2004
"use_ipv6": "True",
2005
"debuglevel": "",
2006
"restore": "True",
2007
"statedir": "/var/lib/mandos"
2008
}
2009
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
2010
3007
# Parse config file for server-global settings
2011
server_config = configparser.SafeConfigParser(server_defaults)
3008
server_config = configparser.ConfigParser(server_defaults)
2012
3009
del server_defaults
2013
server_config.read(os.path.join(options.configdir,
2014
"mandos.conf"))
2015
# 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
2016
3012
server_settings = server_config.defaults()
2017
3013
# Use the appropriate methods on the non-string config options
2018
for option in ("debug", "use_dbus", "use_ipv6"):
3014
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3015
"foreground", "zeroconf"):
2019
3016
server_settings[option] = server_config.getboolean("DEFAULT",
2020
3017
option)
2021
3018
if server_settings["port"]:
2022
3019
server_settings["port"] = server_config.getint("DEFAULT",
2023
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"])
2024
3030
del server_config
2025
3031
2026
3032
# Override the settings from the config file with command line
2027
3033
# options, if set.
2028
3034
for option in ("interface", "address", "port", "debug",
2029
"priority", "servicename", "configdir",
2030
"use_dbus", "use_ipv6", "debuglevel", "restore",
2031
"statedir"):
3035
"priority", "servicename", "configdir", "use_dbus",
3036
"use_ipv6", "debuglevel", "restore", "statedir",
3037
"socket", "foreground", "zeroconf"):
2032
3038
value = getattr(options, option)
2033
3039
if value is not None:
2034
3040
server_settings[option] = value
2035
3041
del options
2036
3042
# Force all strings to be unicode
2037
3043
for option in server_settings.keys():
2038
if type(server_settings[option]) is str:
2039
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
2040
3054
# Now we have our good server settings in "server_settings"
2041
3055
2042
3056
##################################################################
2043
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
2044
3063
# For convenience
2045
3064
debug = server_settings["debug"]
2046
3065
debuglevel = server_settings["debuglevel"]
2048
3067
use_ipv6 = server_settings["use_ipv6"]
2049
3068
stored_state_path = os.path.join(server_settings["statedir"],
2050
3069
stored_state_file)
2051
3070
foreground = server_settings["foreground"]
3071
zeroconf = server_settings["zeroconf"]
3072
2052
3073
if debug:
2053
initlogger(logging.DEBUG)
3074
initlogger(debug, logging.DEBUG)
2054
3075
else:
2055
3076
if not debuglevel:
2056
initlogger()
3077
initlogger(debug)
2057
3078
else:
2058
3079
level = getattr(logging, debuglevel.upper())
2059
initlogger(level)
2060
3080
initlogger(debug, level)
3081
2061
3082
if server_settings["servicename"] != "Mandos":
2062
syslogger.setFormatter(logging.Formatter
2063
('Mandos (%s) [%%(process)d]:'
2064
' %%(levelname)s: %%(message)s'
2065
% server_settings["servicename"]))
2066
3083
syslogger.setFormatter(
3084
logging.Formatter('Mandos ({}) [%(process)d]:'
3085
' %(levelname)s: %(message)s'.format(
3086
server_settings["servicename"])))
3087
2067
3088
# Parse config file with clients
2068
client_defaults = { "timeout": "5m",
2069
"extended_timeout": "15m",
2070
"interval": "2m",
2071
"checker": "fping -q -- %%(host)s",
2072
"host": "",
2073
"approval_delay": "0s",
2074
"approval_duration": "1s",
2075
}
2076
client_config = configparser.SafeConfigParser(client_defaults)
3089
client_config = configparser.ConfigParser(Client.client_defaults)
2077
3090
client_config.read(os.path.join(server_settings["configdir"],
2078
3091
"clients.conf"))
2079
3092
2080
3093
global mandos_dbus_service
2081
3094
mandos_dbus_service = None
2082
2083
tcp_server = MandosServer((server_settings["address"],
2084
server_settings["port"]),
2085
ClientHandler,
2086
interface=(server_settings["interface"]
2087
or None),
2088
use_ipv6=use_ipv6,
2089
gnutls_priority=
2090
server_settings["priority"],
2091
use_dbus=use_dbus)
2092
if not debug:
2093
pidfilename = "/var/run/mandos.pid"
2094
try:
2095
pidfile = open(pidfilename, "w")
2096
except IOError:
2097
logger.error("Could not open file %r", pidfilename)
2098
2099
try:
2100
uid = pwd.getpwnam("_mandos").pw_uid
2101
gid = pwd.getpwnam("_mandos").pw_gid
2102
except KeyError:
2103
try:
2104
uid = pwd.getpwnam("mandos").pw_uid
2105
gid = pwd.getpwnam("mandos").pw_gid
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
2106
3125
except KeyError:
2107
try:
2108
uid = pwd.getpwnam("nobody").pw_uid
2109
gid = pwd.getpwnam("nobody").pw_gid
2110
except KeyError:
2111
uid = 65534
2112
gid = 65534
3126
continue
3127
else:
3128
uid = 65534
3129
gid = 65534
2113
3130
try:
2114
3131
os.setgid(gid)
2115
3132
os.setuid(uid)
3133
if debug:
3134
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3135
gid))
2116
3136
except OSError as error:
2117
if error[0] != errno.EPERM:
2118
raise error
2119
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
2120
3142
if debug:
2121
3143
# Enable all possible GnuTLS debugging
2122
3144
2123
3145
# "Use a log level over 10 to enable all debugging options."
2124
3146
# - GnuTLS manual
2125
gnutls.library.functions.gnutls_global_set_log_level(11)
2126
2127
@gnutls.library.types.gnutls_log_func
3147
gnutls.global_set_log_level(11)
3148
3149
@gnutls.log_func
2128
3150
def debug_gnutls(level, string):
2129
3151
logger.debug("GnuTLS: %s", string[:-1])
2130
2131
(gnutls.library.functions
2132
.gnutls_global_set_log_function(debug_gnutls))
2133
3152
3153
gnutls.global_set_log_function(debug_gnutls)
3154
2134
3155
# Redirect stdin so all checkers get /dev/null
2135
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3156
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2136
3157
os.dup2(null, sys.stdin.fileno())
2137
3158
if null > 2:
2138
3159
os.close(null)
2139
else:
2140
# No console logging
2141
logger.removeHandler(console)
2142
3160
2143
3161
# Need to fork before connecting to D-Bus
2144
if not debug:
3162
if not foreground:
2145
3163
# Close all input and output, do double fork, etc.
2146
3164
daemon()
2147
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
2148
3171
global main_loop
2149
3172
# From the Avahi example code
2150
DBusGMainLoop(set_as_default=True )
2151
main_loop = gobject.MainLoop()
3173
DBusGMainLoop(set_as_default=True)
3174
main_loop = GLib.MainLoop()
2152
3175
bus = dbus.SystemBus()
2153
3176
# End of Avahi example code
2154
3177
if use_dbus:
2155
3178
try:
2156
3179
bus_name = dbus.service.BusName("se.recompile.Mandos",
2157
bus, do_not_queue=True)
2158
old_bus_name = (dbus.service.BusName
2159
("se.bsnet.fukt.Mandos", bus,
2160
do_not_queue=True))
2161
except dbus.exceptions.NameExistsException as e:
2162
logger.error(unicode(e) + ", disabling D-Bus")
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)
2163
3187
use_dbus = False
2164
3188
server_settings["use_dbus"] = False
2165
3189
tcp_server.use_dbus = False
2166
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2167
service = AvahiServiceToSyslog(name =
2168
server_settings["servicename"],
2169
servicetype = "_mandos._tcp",
2170
protocol = protocol, bus = bus)
2171
if server_settings["interface"]:
2172
service.interface = (if_nametoindex
2173
(str(server_settings["interface"])))
2174
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
2175
3201
global multiprocessing_manager
2176
3202
multiprocessing_manager = multiprocessing.Manager()
2177
3203
2178
3204
client_class = Client
2179
3205
if use_dbus:
2180
client_class = functools.partial(ClientDBusTransitional,
2181
bus = bus)
2182
2183
special_settings = {
2184
# Some settings need to be accessd by special methods;
2185
# booleans need .getboolean(), etc. Here is a list of them:
2186
"approved_by_default":
2187
lambda section:
2188
client_config.getboolean(section, "approved_by_default"),
2189
"enabled":
2190
lambda section:
2191
client_config.getboolean(section, "enabled"),
2192
}
2193
# Construct a new dict of client settings of this form:
2194
# { client_name: {setting_name: value, ...}, ...}
2195
# with exceptions for any special settings as defined above
2196
client_settings = dict((clientname,
2197
dict((setting,
2198
(value
2199
if setting not in special_settings
2200
else special_settings[setting]
2201
(clientname)))
2202
for setting, value in
2203
client_config.items(clientname)))
2204
for clientname in client_config.sections())
2205
3206
client_class = functools.partial(ClientDBus, bus=bus)
3207
3208
client_settings = Client.config_parser(client_config)
2206
3209
old_client_settings = {}
2207
clients_data = []
2208
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
2209
3220
# Get client data and settings from last running state.
2210
3221
if server_settings["restore"]:
2211
3222
try:
2212
3223
with open(stored_state_path, "rb") as stored_state:
2213
clients_data, old_client_settings = (pickle.load
2214
(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"))
2215
3273
os.remove(stored_state_path)
2216
3274
except IOError as e:
2217
logger.warning("Could not load persistent state: {0}"
2218
.format(e))
2219
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)
2220
3281
raise
2221
3282
except EOFError as e:
3283
logger.warning("Could not load persistent state: "
3284
"EOFError:",
3285
exc_info=e)
3286
2222
3287
with PGPEngine() as pgp:
2223
for client in clients_data:
2224
client_name = client["name"]
2225
3288
for client_name, client in clients_data.items():
3289
# Skip removed clients
3290
if client_name not in client_settings:
3291
continue
3292
2226
3293
# Decide which value to use after restoring saved state.
2227
3294
# We have three different values: Old config file,
2228
3295
# new config file, and saved state.
2233
3300
# For each value in new config, check if it
2234
3301
# differs from the old config value (Except for
2235
3302
# the "secret" attribute)
2236
if (name != "secret" and
2237
value != old_client_settings[client_name]
2238
[name]):
3303
if (name != "secret"
3304
and (value !=
3305
old_client_settings[client_name][name])):
2239
3306
client[name] = value
2240
3307
except KeyError:
2241
3308
pass
2242
3309
2243
3310
# Clients who has passed its expire date can still be
2244
# enabled if its last checker was sucessful. Clients
2245
# whose checker failed before we stored its state is
2246
# assumed to have failed all checkers during downtime.
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.
2247
3315
if client["enabled"]:
2248
if client["expires"] <= (datetime.datetime
2249
.utcnow()):
2250
# Client has expired
2251
if client["last_checker_status"] != 0:
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"]))
2252
3330
client["enabled"] = False
2253
3331
else:
2254
client["expires"] = (datetime.datetime
2255
.utcnow()
2256
+ client["timeout"])
2257
2258
client["changedstate"] = (multiprocessing_manager
2259
.Condition
2260
(multiprocessing_manager
2261
.Lock()))
2262
if use_dbus:
2263
new_client = (ClientDBusTransitional.__new__
2264
(ClientDBusTransitional))
2265
tcp_server.clients[client_name] = new_client
2266
new_client.bus = bus
2267
for name, value in client.iteritems():
2268
setattr(new_client, name, value)
2269
client_object_name = unicode(client_name).translate(
2270
{ord("."): ord("_"),
2271
ord("-"): ord("_")})
2272
new_client.dbus_object_path = (dbus.ObjectPath
2273
("/clients/"
2274
+ client_object_name))
2275
DBusObjectWithProperties.__init__(new_client,
2276
new_client.bus,
2277
new_client
2278
.dbus_object_path)
2279
else:
2280
tcp_server.clients[client_name] = (Client.__new__
2281
(Client))
2282
for name, value in client.iteritems():
2283
setattr(tcp_server.clients[client_name],
2284
name, value)
2285
3332
client["expires"] = (
3333
datetime.datetime.utcnow()
3334
+ client["timeout"])
3335
logger.debug("Last checker succeeded,"
3336
" keeping {} enabled".format(
3337
client_name))
2286
3338
try:
2287
tcp_server.clients[client_name].secret = (
2288
pgp.decrypt(tcp_server.clients[client_name]
2289
.encrypted_secret,
2290
client_settings[client_name]
2291
["secret"]))
3339
client["secret"] = pgp.decrypt(
3340
client["encrypted_secret"],
3341
client_settings[client_name]["secret"])
2292
3342
except PGPError:
2293
3343
# If decryption fails, we use secret from new settings
2294
logger.debug("Failed to decrypt {0} old secret"
2295
.format(client_name))
2296
tcp_server.clients[client_name].secret = (
2297
client_settings[client_name]["secret"])
2298
2299
# Create/remove clients based on new changes made to config
2300
for clientname in set(old_client_settings) - set(client_settings):
2301
del tcp_server.clients[clientname]
2302
for clientname in set(client_settings) - set(old_client_settings):
2303
tcp_server.clients[clientname] = (client_class(name
2304
= clientname,
2305
config =
2306
client_settings
2307
[clientname]))
2308
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
2309
3364
if not tcp_server.clients:
2310
3365
logger.warning("No clients defined")
2311
2312
if not debug:
2313
try:
2314
with pidfile:
2315
pid = os.getpid()
2316
pidfile.write(str(pid) + "\n".encode("utf-8"))
2317
del pidfile
2318
except IOError:
2319
logger.error("Could not write to file %r with PID %d",
2320
pidfilename, pid)
2321
except NameError:
2322
# "pidfile" was never created
2323
pass
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
2324
3377
del pidfilename
2325
2326
signal.signal(signal.SIGINT, signal.SIG_IGN)
2327
2328
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2329
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2330
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
2331
3383
if use_dbus:
2332
class MandosDBusService(dbus.service.Object):
3384
3385
@alternate_dbus_interfaces(
3386
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3387
class MandosDBusService(DBusObjectWithObjectManager):
2333
3388
"""A D-Bus proxy object"""
3389
2334
3390
def __init__(self):
2335
3391
dbus.service.Object.__init__(self, bus, "/")
3392
2336
3393
_interface = "se.recompile.Mandos"
2337
3394
2338
3395
@dbus.service.signal(_interface, signature="o")
2339
3396
def ClientAdded(self, objpath):
2340
3397
"D-Bus signal"
2341
3398
pass
2342
3399
2343
3400
@dbus.service.signal(_interface, signature="ss")
2344
def ClientNotFound(self, fingerprint, address):
3401
def ClientNotFound(self, key_id, address):
2345
3402
"D-Bus signal"
2346
3403
pass
2347
3404
3405
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3406
"true"})
2348
3407
@dbus.service.signal(_interface, signature="os")
2349
3408
def ClientRemoved(self, objpath, name):
2350
3409
"D-Bus signal"
2351
3410
pass
2352
3411
3412
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3413
"true"})
2353
3414
@dbus.service.method(_interface, out_signature="ao")
2354
3415
def GetAllClients(self):
2355
3416
"D-Bus method"
2356
return dbus.Array(c.dbus_object_path
2357
for c in
2358
tcp_server.clients.itervalues())
2359
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"})
2360
3422
@dbus.service.method(_interface,
2361
3423
out_signature="a{oa{sv}}")
2362
3424
def GetAllClientsWithProperties(self):
2363
3425
"D-Bus method"
2364
3426
return dbus.Dictionary(
2365
((c.dbus_object_path, c.GetAll(""))
2366
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()},
2367
3430
signature="oa{sv}")
2368
3431
2369
3432
@dbus.service.method(_interface, in_signature="o")
2370
3433
def RemoveClient(self, object_path):
2371
3434
"D-Bus method"
2372
for c in tcp_server.clients.itervalues():
3435
for c in tcp_server.clients.values():
2373
3436
if c.dbus_object_path == object_path:
2374
3437
del tcp_server.clients[c.name]
2375
3438
c.remove_from_connection()
2376
# Don't signal anything except ClientRemoved
3439
# Don't signal the disabling
2377
3440
c.disable(quiet=True)
2378
# Emit D-Bus signal
2379
self.ClientRemoved(object_path, c.name)
3441
# Emit D-Bus signal for removal
3442
self.client_removed_signal(c)
2380
3443
return
2381
3444
raise KeyError(object_path)
2382
3445
2383
3446
del _interface
2384
2385
class MandosDBusServiceTransitional(MandosDBusService):
2386
__metaclass__ = AlternateDBusNamesMetaclass
2387
mandos_dbus_service = MandosDBusServiceTransitional()
2388
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
2389
3491
def cleanup():
2390
3492
"Cleanup function; run on exit"
2391
service.cleanup()
2392
2393
multiprocessing.active_children()
3493
if zeroconf:
3494
service.cleanup()
3495
3496
mp.active_children()
3497
wn.close()
2394
3498
if not (tcp_server.clients or client_settings):
2395
3499
return
2396
3500
2397
3501
# Store client before exiting. Secrets are encrypted with key
2398
3502
# based on what config file has. If config file is
2399
3503
# removed/edited, old secret will thus be unrecovable.
2400
clients = []
3504
clients = {}
2401
3505
with PGPEngine() as pgp:
2402
for client in tcp_server.clients.itervalues():
3506
for client in tcp_server.clients.values():
2403
3507
key = client_settings[client.name]["secret"]
2404
3508
client.encrypted_secret = pgp.encrypt(client.secret,
2405
3509
key)
2406
3510
client_dict = {}
2407
2408
# A list of attributes that will not be stored when
2409
# shutting down.
2410
exclude = set(("bus", "changedstate", "secret"))
2411
for name, typ in (inspect.getmembers
2412
(dbus.service.Object)):
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):
2413
3518
exclude.add(name)
2414
3519
2415
3520
client_dict["encrypted_secret"] = (client
2416
3521
.encrypted_secret)
2417
3522
for attr in client.client_structure:
2418
3523
if attr not in exclude:
2419
3524
client_dict[attr] = getattr(client, attr)
2420
2421
clients.append(client_dict)
3525
3526
clients[client.name] = client_dict
2422
3527
del client_settings[client.name]["secret"]
2423
3528
2424
3529
try:
2425
with os.fdopen(os.open(stored_state_path,
2426
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2427
0600), "wb") as stored_state:
2428
pickle.dump((clients, client_settings), stored_state)
3530
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)
2429
3540
except (IOError, OSError) as e:
2430
logger.warning("Could not save persistent state: {0}"
2431
.format(e))
2432
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)
2433
3552
raise
2434
3553
2435
3554
# Delete all clients, and settings from config
2436
3555
while tcp_server.clients:
2437
3556
name, client = tcp_server.clients.popitem()
2438
3557
if use_dbus:
2439
3558
client.remove_from_connection()
2440
# Don't signal anything except ClientRemoved
3559
# Don't signal the disabling
2441
3560
client.disable(quiet=True)
3561
# Emit D-Bus signal for removal
2442
3562
if use_dbus:
2443
# Emit D-Bus signal
2444
mandos_dbus_service.ClientRemoved(client
2445
.dbus_object_path,
2446
client.name)
3563
mandos_dbus_service.client_removed_signal(client)
2447
3564
client_settings.clear()
2448
3565
2449
3566
atexit.register(cleanup)
2450
2451
for client in tcp_server.clients.itervalues():
3567
3568
for client in tcp_server.clients.values():
2452
3569
if use_dbus:
2453
# Emit D-Bus signal
2454
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3570
# Emit D-Bus signal for adding
3571
mandos_dbus_service.client_added_signal(client)
2455
3572
# Need to initiate checking of clients
2456
3573
if client.enabled:
2457
3574
client.init_checker()
2458
3575
2459
3576
tcp_server.enable()
2460
3577
tcp_server.server_activate()
2461
3578
2462
3579
# Find out what port we got
2463
service.port = tcp_server.socket.getsockname()[1]
3580
if zeroconf:
3581
service.port = tcp_server.socket.getsockname()[1]
2464
3582
if use_ipv6:
2465
3583
logger.info("Now listening on address %r, port %d,"
2466
" flowinfo %d, scope_id %d"
2467
% tcp_server.socket.getsockname())
3584
" flowinfo %d, scope_id %d",
3585
*tcp_server.socket.getsockname())
2468
3586
else: # IPv4
2469
logger.info("Now listening on address %r, port %d"
2470
% tcp_server.socket.getsockname())
2471
2472
#service.interface = tcp_server.socket.getsockname()[3]
2473
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
2474
3592
try:
2475
# From the Avahi example code
2476
try:
2477
service.activate()
2478
except dbus.exceptions.DBusException as error:
2479
logger.critical("DBusException: %s", error)
2480
cleanup()
2481
sys.exit(1)
2482
# End of Avahi example code
2483
2484
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2485
lambda *args, **kwargs:
2486
(tcp_server.handle_request
2487
(*args[2:], **kwargs) or True))
2488
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
2489
3608
logger.debug("Starting main loop")
2490
3609
main_loop.run()
2491
3610
except AvahiError as error:
2492
logger.critical("AvahiError: %s", error)
3611
logger.critical("Avahi Error", exc_info=error)
2493
3612
cleanup()
2494
3613
sys.exit(1)
2495
3614
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0