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- Committer: teddy at recompile
- Date: 2020-02-09 03:38:33 UTC
- Revision ID: teddy@recompile.se-20200209033833-2la1pujrnv2m0so4
Use reallocarray() if available, or check for overflow
* dracut-module/password-agent.c (add_to_queue): Check for overflow.
(test_add_to_queue_overflow): New test.
* plugin-runner.c (add_to_char_array, main): Use reallocarray().
* plugins.d/plymouth.c (exec_and_wait): - '' -
* dracut-module/password-agent.c (add_to_queue): Check for overflow.
(test_add_to_queue_overflow): New test.
* plugin-runner.c (add_to_char_array, main): Use reallocarray().
* plugins.d/plymouth.c (exec_and_wait): - '' -
- 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
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
1
#!/usr/bin/python3 -bI
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
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
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
32
# Contact the authors at <mandos@recompile.se>.
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
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
import random
82
import shlex
66
83
67
84
import dbus
68
85
import dbus.service
69
import gobject
70
import avahi
86
import gi
87
from gi.repository import GLib
71
88
from dbus.mainloop.glib import DBusGMainLoop
72
89
import ctypes
73
90
import ctypes.util
74
91
import xml.dom.minidom
75
92
import inspect
76
93
77
try:
94
if sys.version_info.major == 2:
95
__metaclass__ = type
96
str = unicode
97
98
# Add collections.abc.Callable if it does not exist
99
try:
100
collections.abc.Callable
101
except AttributeError:
102
class abc:
103
Callable = collections.Callable
104
collections.abc = abc
105
del abc
106
107
# Add shlex.quote if it does not exist
108
try:
109
shlex.quote
110
except AttributeError:
111
shlex.quote = re.escape
112
113
# Show warnings by default
114
if not sys.warnoptions:
115
import warnings
116
warnings.simplefilter("default")
117
118
# Try to find the value of SO_BINDTODEVICE:
119
try:
120
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
121
# newer, and it is also the most natural place for it:
78
122
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
79
123
except AttributeError:
80
124
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
81
127
from IN import SO_BINDTODEVICE
82
128
except ImportError:
83
SO_BINDTODEVICE = None
84
85
86
version = "1.3.1"
87
88
#logger = logging.getLogger('mandos')
89
logger = logging.Logger('mandos')
90
syslogger = (logging.handlers.SysLogHandler
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
95
' %(message)s'))
96
logger.addHandler(syslogger)
97
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
100
' %(levelname)s:'
101
' %(message)s'))
102
logger.addHandler(console)
129
# In Python 2.7 it seems to have been removed entirely.
130
# Try running the C preprocessor:
131
try:
132
cc = subprocess.Popen(["cc", "--language=c", "-E",
133
"/dev/stdin"],
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE)
136
stdout = cc.communicate(
137
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
138
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
139
except (OSError, ValueError, IndexError):
140
# No value found
141
SO_BINDTODEVICE = None
142
143
if sys.version_info < (3, 2):
144
configparser.Configparser = configparser.SafeConfigParser
145
146
version = "1.8.9"
147
stored_state_file = "clients.pickle"
148
149
logger = logging.getLogger()
150
logging.captureWarnings(True) # Show warnings via the logging system
151
syslogger = None
152
153
try:
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
156
except (OSError, AttributeError):
157
158
def if_nametoindex(interface):
159
"Get an interface index the hard way, i.e. using fcntl()"
160
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
161
with contextlib.closing(socket.socket()) as s:
162
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
165
return interface_index
166
167
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
172
func.func_globals,
173
func.func_name,
174
func.func_defaults,
175
func.func_closure)
176
else:
177
return types.FunctionType(func.__code__,
178
func.__globals__,
179
func.__name__,
180
func.__defaults__,
181
func.__closure__)
182
183
184
def initlogger(debug, level=logging.WARNING):
185
"""init logger and add loglevel"""
186
187
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
191
syslogger.setFormatter(logging.Formatter
192
('Mandos [%(process)d]: %(levelname)s:'
193
' %(message)s'))
194
logger.addHandler(syslogger)
195
196
if debug:
197
console = logging.StreamHandler()
198
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
199
' [%(process)d]:'
200
' %(levelname)s:'
201
' %(message)s'))
202
logger.addHandler(console)
203
logger.setLevel(level)
204
205
206
class PGPError(Exception):
207
"""Exception if encryption/decryption fails"""
208
pass
209
210
211
class PGPEngine:
212
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
214
def __init__(self):
215
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
216
self.gpg = "gpg"
217
try:
218
output = subprocess.check_output(["gpgconf"])
219
for line in output.splitlines():
220
name, text, path = line.split(b":")
221
if name == b"gpg":
222
self.gpg = path
223
break
224
except OSError as e:
225
if e.errno != errno.ENOENT:
226
raise
227
self.gnupgargs = ['--batch',
228
'--homedir', self.tempdir,
229
'--force-mdc',
230
'--quiet']
231
# Only GPG version 1 has the --no-use-agent option.
232
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
233
self.gnupgargs.append("--no-use-agent")
234
235
def __enter__(self):
236
return self
237
238
def __exit__(self, exc_type, exc_value, traceback):
239
self._cleanup()
240
return False
241
242
def __del__(self):
243
self._cleanup()
244
245
def _cleanup(self):
246
if self.tempdir is not None:
247
# Delete contents of tempdir
248
for root, dirs, files in os.walk(self.tempdir,
249
topdown=False):
250
for filename in files:
251
os.remove(os.path.join(root, filename))
252
for dirname in dirs:
253
os.rmdir(os.path.join(root, dirname))
254
# Remove tempdir
255
os.rmdir(self.tempdir)
256
self.tempdir = None
257
258
def password_encode(self, password):
259
# Passphrase can not be empty and can not contain newlines or
260
# NUL bytes. So we prefix it and hex encode it.
261
encoded = b"mandos" + binascii.hexlify(password)
262
if len(encoded) > 2048:
263
# GnuPG can't handle long passwords, so encode differently
264
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
265
.replace(b"\n", b"\\n")
266
.replace(b"\0", b"\\x00"))
267
return encoded
268
269
def encrypt(self, data, password):
270
passphrase = self.password_encode(password)
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
273
passfile.write(passphrase)
274
passfile.flush()
275
proc = subprocess.Popen([self.gpg, '--symmetric',
276
'--passphrase-file',
277
passfile.name]
278
+ self.gnupgargs,
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
283
if proc.returncode != 0:
284
raise PGPError(err)
285
return ciphertext
286
287
def decrypt(self, data, password):
288
passphrase = self.password_encode(password)
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
291
passfile.write(passphrase)
292
passfile.flush()
293
proc = subprocess.Popen([self.gpg, '--decrypt',
294
'--passphrase-file',
295
passfile.name]
296
+ self.gnupgargs,
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
301
if proc.returncode != 0:
302
raise PGPError(err)
303
return decrypted_plaintext
304
305
306
# Pretend that we have an Avahi module
307
class avahi:
308
"""This isn't so much a class as it is a module-like namespace."""
309
IF_UNSPEC = -1 # avahi-common/address.h
310
PROTO_UNSPEC = -1 # avahi-common/address.h
311
PROTO_INET = 0 # avahi-common/address.h
312
PROTO_INET6 = 1 # avahi-common/address.h
313
DBUS_NAME = "org.freedesktop.Avahi"
314
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
315
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
DBUS_PATH_SERVER = "/"
317
318
@staticmethod
319
def string_array_to_txt_array(t):
320
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
for s in t), signature="ay")
322
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
323
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
324
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
325
SERVER_INVALID = 0 # avahi-common/defs.h
326
SERVER_REGISTERING = 1 # avahi-common/defs.h
327
SERVER_RUNNING = 2 # avahi-common/defs.h
328
SERVER_COLLISION = 3 # avahi-common/defs.h
329
SERVER_FAILURE = 4 # avahi-common/defs.h
330
103
331
104
332
class AvahiError(Exception):
105
333
def __init__(self, value, *args, **kwargs):
106
334
self.value = value
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
110
338
111
339
class AvahiServiceError(AvahiError):
112
340
pass
113
341
342
114
343
class AvahiGroupError(AvahiError):
115
344
pass
116
345
117
346
118
class AvahiService(object):
347
class AvahiService:
119
348
"""An Avahi (Zeroconf) service.
120
349
121
350
Attributes:
122
351
interface: integer; avahi.IF_UNSPEC or an interface index.
123
352
Used to optionally bind to the specified interface.
124
353
name: string; Example: 'Mandos'
125
354
type: string; Example: '_mandos._tcp'.
126
See <http://www.dns-sd.org/ServiceTypes.html>
355
See <https://www.iana.org/assignments/service-names-port-numbers>
127
356
port: integer; what port to announce
128
357
TXT: list of strings; TXT record for the service
129
358
domain: string; Domain to publish on, default to .local if empty.
135
364
server: D-Bus Server
136
365
bus: dbus.SystemBus()
137
366
"""
138
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
139
servicetype = None, port = None, TXT = None,
140
domain = "", host = "", max_renames = 32768,
141
protocol = avahi.PROTO_UNSPEC, bus = None):
367
368
def __init__(self,
369
interface=avahi.IF_UNSPEC,
370
name=None,
371
servicetype=None,
372
port=None,
373
TXT=None,
374
domain="",
375
host="",
376
max_renames=32768,
377
protocol=avahi.PROTO_UNSPEC,
378
bus=None):
142
379
self.interface = interface
143
380
self.name = name
144
381
self.type = servicetype
153
390
self.server = None
154
391
self.bus = bus
155
392
self.entry_group_state_changed_match = None
156
def rename(self):
393
394
def rename(self, remove=True):
157
395
"""Derived from the Avahi example code"""
158
396
if self.rename_count >= self.max_renames:
159
397
logger.critical("No suitable Zeroconf service name found"
160
398
" after %i retries, exiting.",
161
399
self.rename_count)
162
400
raise AvahiServiceError("Too many renames")
163
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
403
self.rename_count += 1
164
404
logger.info("Changing Zeroconf service name to %r ...",
165
405
self.name)
166
syslogger.setFormatter(logging.Formatter
167
('Mandos (%s) [%%(process)d]:'
168
' %%(levelname)s: %%(message)s'
169
% self.name))
170
self.remove()
406
if remove:
407
self.remove()
171
408
try:
172
409
self.add()
173
410
except dbus.exceptions.DBusException as error:
174
logger.critical("DBusException: %s", error)
175
self.cleanup()
176
os._exit(1)
177
self.rename_count += 1
411
if (error.get_dbus_name()
412
== "org.freedesktop.Avahi.CollisionError"):
413
logger.info("Local Zeroconf service name collision.")
414
return self.rename(remove=False)
415
else:
416
logger.critical("D-Bus Exception", exc_info=error)
417
self.cleanup()
418
os._exit(1)
419
178
420
def remove(self):
179
421
"""Derived from the Avahi example code"""
180
422
if self.entry_group_state_changed_match is not None:
182
424
self.entry_group_state_changed_match = None
183
425
if self.group is not None:
184
426
self.group.Reset()
427
185
428
def add(self):
186
429
"""Derived from the Avahi example code"""
187
430
self.remove()
192
435
avahi.DBUS_INTERFACE_ENTRY_GROUP)
193
436
self.entry_group_state_changed_match = (
194
437
self.group.connect_to_signal(
195
'StateChanged', self .entry_group_state_changed))
438
'StateChanged', self.entry_group_state_changed))
196
439
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
197
440
self.name, self.type)
198
441
self.group.AddService(
204
447
dbus.UInt16(self.port),
205
448
avahi.string_array_to_txt_array(self.TXT))
206
449
self.group.Commit()
450
207
451
def entry_group_state_changed(self, state, error):
208
452
"""Derived from the Avahi example code"""
209
453
logger.debug("Avahi entry group state change: %i", state)
210
454
211
455
if state == avahi.ENTRY_GROUP_ESTABLISHED:
212
456
logger.debug("Zeroconf service established.")
213
457
elif state == avahi.ENTRY_GROUP_COLLISION:
215
459
self.rename()
216
460
elif state == avahi.ENTRY_GROUP_FAILURE:
217
461
logger.critical("Avahi: Error in group state changed %s",
218
unicode(error))
219
raise AvahiGroupError("State changed: %s"
220
% unicode(error))
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
221
465
def cleanup(self):
222
466
"""Derived from the Avahi example code"""
223
467
if self.group is not None:
224
468
try:
225
469
self.group.Free()
226
470
except (dbus.exceptions.UnknownMethodException,
227
dbus.exceptions.DBusException) as e:
471
dbus.exceptions.DBusException):
228
472
pass
229
473
self.group = None
230
474
self.remove()
475
231
476
def server_state_changed(self, state, error=None):
232
477
"""Derived from the Avahi example code"""
233
478
logger.debug("Avahi server state change: %i", state)
234
bad_states = { avahi.SERVER_INVALID:
235
"Zeroconf server invalid",
236
avahi.SERVER_REGISTERING: None,
237
avahi.SERVER_COLLISION:
238
"Zeroconf server name collision",
239
avahi.SERVER_FAILURE:
240
"Zeroconf server failure" }
479
bad_states = {
480
avahi.SERVER_INVALID: "Zeroconf server invalid",
481
avahi.SERVER_REGISTERING: None,
482
avahi.SERVER_COLLISION: "Zeroconf server name collision",
483
avahi.SERVER_FAILURE: "Zeroconf server failure",
484
}
241
485
if state in bad_states:
242
486
if bad_states[state] is not None:
243
487
if error is None:
246
490
logger.error(bad_states[state] + ": %r", error)
247
491
self.cleanup()
248
492
elif state == avahi.SERVER_RUNNING:
249
self.add()
493
try:
494
self.add()
495
except dbus.exceptions.DBusException as error:
496
if (error.get_dbus_name()
497
== "org.freedesktop.Avahi.CollisionError"):
498
logger.info("Local Zeroconf service name"
499
" collision.")
500
return self.rename(remove=False)
501
else:
502
logger.critical("D-Bus Exception", exc_info=error)
503
self.cleanup()
504
os._exit(1)
250
505
else:
251
506
if error is None:
252
507
logger.debug("Unknown state: %r", state)
253
508
else:
254
509
logger.debug("Unknown state: %r: %r", state, error)
510
255
511
def activate(self):
256
512
"""Derived from the Avahi example code"""
257
513
if self.server is None:
261
517
follow_name_owner_changes=True),
262
518
avahi.DBUS_INTERFACE_SERVER)
263
519
self.server.connect_to_signal("StateChanged",
264
self.server_state_changed)
520
self.server_state_changed)
265
521
self.server_state_changed(self.server.GetState())
266
522
267
523
268
def _timedelta_to_milliseconds(td):
269
"Convert a datetime.timedelta() to milliseconds"
270
return ((td.days * 24 * 60 * 60 * 1000)
271
+ (td.seconds * 1000)
272
+ (td.microseconds // 1000))
273
274
class Client(object):
524
class AvahiServiceToSyslog(AvahiService):
525
def rename(self, *args, **kwargs):
526
"""Add the new name to the syslog messages"""
527
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
528
syslogger.setFormatter(logging.Formatter(
529
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
530
.format(self.name)))
531
return ret
532
533
534
# Pretend that we have a GnuTLS module
535
class gnutls:
536
"""This isn't so much a class as it is a module-like namespace."""
537
538
library = ctypes.util.find_library("gnutls")
539
if library is None:
540
library = ctypes.util.find_library("gnutls-deb0")
541
_library = ctypes.cdll.LoadLibrary(library)
542
del library
543
544
# Unless otherwise indicated, the constants and types below are
545
# all from the gnutls/gnutls.h C header file.
546
547
# Constants
548
E_SUCCESS = 0
549
E_INTERRUPTED = -52
550
E_AGAIN = -28
551
CRT_OPENPGP = 2
552
CRT_RAWPK = 3
553
CLIENT = 2
554
SHUT_RDWR = 0
555
CRD_CERTIFICATE = 1
556
E_NO_CERTIFICATE_FOUND = -49
557
X509_FMT_DER = 0
558
NO_TICKETS = 1<<10
559
ENABLE_RAWPK = 1<<18
560
CTYPE_PEERS = 3
561
KEYID_USE_SHA256 = 1 # gnutls/x509.h
562
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
563
564
# Types
565
class session_int(ctypes.Structure):
566
_fields_ = []
567
session_t = ctypes.POINTER(session_int)
568
569
class certificate_credentials_st(ctypes.Structure):
570
_fields_ = []
571
certificate_credentials_t = ctypes.POINTER(
572
certificate_credentials_st)
573
certificate_type_t = ctypes.c_int
574
575
class datum_t(ctypes.Structure):
576
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
577
('size', ctypes.c_uint)]
578
579
class openpgp_crt_int(ctypes.Structure):
580
_fields_ = []
581
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
582
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
583
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
584
credentials_type_t = ctypes.c_int
585
transport_ptr_t = ctypes.c_void_p
586
close_request_t = ctypes.c_int
587
588
# Exceptions
589
class Error(Exception):
590
def __init__(self, message=None, code=None, args=()):
591
# Default usage is by a message string, but if a return
592
# code is passed, convert it to a string with
593
# gnutls.strerror()
594
self.code = code
595
if message is None and code is not None:
596
message = gnutls.strerror(code)
597
return super(gnutls.Error, self).__init__(
598
message, *args)
599
600
class CertificateSecurityError(Error):
601
pass
602
603
# Classes
604
class Credentials:
605
def __init__(self):
606
self._c_object = gnutls.certificate_credentials_t()
607
gnutls.certificate_allocate_credentials(
608
ctypes.byref(self._c_object))
609
self.type = gnutls.CRD_CERTIFICATE
610
611
def __del__(self):
612
gnutls.certificate_free_credentials(self._c_object)
613
614
class ClientSession:
615
def __init__(self, socket, credentials=None):
616
self._c_object = gnutls.session_t()
617
gnutls_flags = gnutls.CLIENT
618
if gnutls.check_version(b"3.5.6"):
619
gnutls_flags |= gnutls.NO_TICKETS
620
if gnutls.has_rawpk:
621
gnutls_flags |= gnutls.ENABLE_RAWPK
622
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
623
del gnutls_flags
624
gnutls.set_default_priority(self._c_object)
625
gnutls.transport_set_ptr(self._c_object, socket.fileno())
626
gnutls.handshake_set_private_extensions(self._c_object,
627
True)
628
self.socket = socket
629
if credentials is None:
630
credentials = gnutls.Credentials()
631
gnutls.credentials_set(self._c_object, credentials.type,
632
ctypes.cast(credentials._c_object,
633
ctypes.c_void_p))
634
self.credentials = credentials
635
636
def __del__(self):
637
gnutls.deinit(self._c_object)
638
639
def handshake(self):
640
return gnutls.handshake(self._c_object)
641
642
def send(self, data):
643
data = bytes(data)
644
data_len = len(data)
645
while data_len > 0:
646
data_len -= gnutls.record_send(self._c_object,
647
data[-data_len:],
648
data_len)
649
650
def bye(self):
651
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
652
653
# Error handling functions
654
def _error_code(result):
655
"""A function to raise exceptions on errors, suitable
656
for the 'restype' attribute on ctypes functions"""
657
if result >= 0:
658
return result
659
if result == gnutls.E_NO_CERTIFICATE_FOUND:
660
raise gnutls.CertificateSecurityError(code=result)
661
raise gnutls.Error(code=result)
662
663
def _retry_on_error(result, func, arguments):
664
"""A function to retry on some errors, suitable
665
for the 'errcheck' attribute on ctypes functions"""
666
while result < 0:
667
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
668
return _error_code(result)
669
result = func(*arguments)
670
return result
671
672
# Unless otherwise indicated, the function declarations below are
673
# all from the gnutls/gnutls.h C header file.
674
675
# Functions
676
priority_set_direct = _library.gnutls_priority_set_direct
677
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
678
ctypes.POINTER(ctypes.c_char_p)]
679
priority_set_direct.restype = _error_code
680
681
init = _library.gnutls_init
682
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
683
init.restype = _error_code
684
685
set_default_priority = _library.gnutls_set_default_priority
686
set_default_priority.argtypes = [session_t]
687
set_default_priority.restype = _error_code
688
689
record_send = _library.gnutls_record_send
690
record_send.argtypes = [session_t, ctypes.c_void_p,
691
ctypes.c_size_t]
692
record_send.restype = ctypes.c_ssize_t
693
record_send.errcheck = _retry_on_error
694
695
certificate_allocate_credentials = (
696
_library.gnutls_certificate_allocate_credentials)
697
certificate_allocate_credentials.argtypes = [
698
ctypes.POINTER(certificate_credentials_t)]
699
certificate_allocate_credentials.restype = _error_code
700
701
certificate_free_credentials = (
702
_library.gnutls_certificate_free_credentials)
703
certificate_free_credentials.argtypes = [
704
certificate_credentials_t]
705
certificate_free_credentials.restype = None
706
707
handshake_set_private_extensions = (
708
_library.gnutls_handshake_set_private_extensions)
709
handshake_set_private_extensions.argtypes = [session_t,
710
ctypes.c_int]
711
handshake_set_private_extensions.restype = None
712
713
credentials_set = _library.gnutls_credentials_set
714
credentials_set.argtypes = [session_t, credentials_type_t,
715
ctypes.c_void_p]
716
credentials_set.restype = _error_code
717
718
strerror = _library.gnutls_strerror
719
strerror.argtypes = [ctypes.c_int]
720
strerror.restype = ctypes.c_char_p
721
722
certificate_type_get = _library.gnutls_certificate_type_get
723
certificate_type_get.argtypes = [session_t]
724
certificate_type_get.restype = _error_code
725
726
certificate_get_peers = _library.gnutls_certificate_get_peers
727
certificate_get_peers.argtypes = [session_t,
728
ctypes.POINTER(ctypes.c_uint)]
729
certificate_get_peers.restype = ctypes.POINTER(datum_t)
730
731
global_set_log_level = _library.gnutls_global_set_log_level
732
global_set_log_level.argtypes = [ctypes.c_int]
733
global_set_log_level.restype = None
734
735
global_set_log_function = _library.gnutls_global_set_log_function
736
global_set_log_function.argtypes = [log_func]
737
global_set_log_function.restype = None
738
739
deinit = _library.gnutls_deinit
740
deinit.argtypes = [session_t]
741
deinit.restype = None
742
743
handshake = _library.gnutls_handshake
744
handshake.argtypes = [session_t]
745
handshake.restype = _error_code
746
handshake.errcheck = _retry_on_error
747
748
transport_set_ptr = _library.gnutls_transport_set_ptr
749
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
750
transport_set_ptr.restype = None
751
752
bye = _library.gnutls_bye
753
bye.argtypes = [session_t, close_request_t]
754
bye.restype = _error_code
755
bye.errcheck = _retry_on_error
756
757
check_version = _library.gnutls_check_version
758
check_version.argtypes = [ctypes.c_char_p]
759
check_version.restype = ctypes.c_char_p
760
761
_need_version = b"3.3.0"
762
if check_version(_need_version) is None:
763
raise self.Error("Needs GnuTLS {} or later"
764
.format(_need_version))
765
766
_tls_rawpk_version = b"3.6.6"
767
has_rawpk = bool(check_version(_tls_rawpk_version))
768
769
if has_rawpk:
770
# Types
771
class pubkey_st(ctypes.Structure):
772
_fields = []
773
pubkey_t = ctypes.POINTER(pubkey_st)
774
775
x509_crt_fmt_t = ctypes.c_int
776
777
# All the function declarations below are from gnutls/abstract.h
778
pubkey_init = _library.gnutls_pubkey_init
779
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
780
pubkey_init.restype = _error_code
781
782
pubkey_import = _library.gnutls_pubkey_import
783
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
784
x509_crt_fmt_t]
785
pubkey_import.restype = _error_code
786
787
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
788
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
789
ctypes.POINTER(ctypes.c_ubyte),
790
ctypes.POINTER(ctypes.c_size_t)]
791
pubkey_get_key_id.restype = _error_code
792
793
pubkey_deinit = _library.gnutls_pubkey_deinit
794
pubkey_deinit.argtypes = [pubkey_t]
795
pubkey_deinit.restype = None
796
else:
797
# All the function declarations below are from gnutls/openpgp.h
798
799
openpgp_crt_init = _library.gnutls_openpgp_crt_init
800
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
801
openpgp_crt_init.restype = _error_code
802
803
openpgp_crt_import = _library.gnutls_openpgp_crt_import
804
openpgp_crt_import.argtypes = [openpgp_crt_t,
805
ctypes.POINTER(datum_t),
806
openpgp_crt_fmt_t]
807
openpgp_crt_import.restype = _error_code
808
809
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
810
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
811
ctypes.POINTER(ctypes.c_uint)]
812
openpgp_crt_verify_self.restype = _error_code
813
814
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
815
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
816
openpgp_crt_deinit.restype = None
817
818
openpgp_crt_get_fingerprint = (
819
_library.gnutls_openpgp_crt_get_fingerprint)
820
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
821
ctypes.c_void_p,
822
ctypes.POINTER(
823
ctypes.c_size_t)]
824
openpgp_crt_get_fingerprint.restype = _error_code
825
826
if check_version(b"3.6.4"):
827
certificate_type_get2 = _library.gnutls_certificate_type_get2
828
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
829
certificate_type_get2.restype = _error_code
830
831
# Remove non-public functions
832
del _error_code, _retry_on_error
833
834
835
def call_pipe(connection, # : multiprocessing.Connection
836
func, *args, **kwargs):
837
"""This function is meant to be called by multiprocessing.Process
838
839
This function runs func(*args, **kwargs), and writes the resulting
840
return value on the provided multiprocessing.Connection.
841
"""
842
connection.send(func(*args, **kwargs))
843
connection.close()
844
845
846
class Client:
275
847
"""A representation of a client host served by this server.
276
848
277
849
Attributes:
278
_approved: bool(); 'None' if not yet approved/disapproved
850
approved: bool(); 'None' if not yet approved/disapproved
279
851
approval_delay: datetime.timedelta(); Time to wait for approval
280
852
approval_duration: datetime.timedelta(); Duration of one approval
281
checker: subprocess.Popen(); a running checker process used
282
to see if the client lives.
283
'None' if no process is running.
284
checker_callback_tag: a gobject event source tag, or None
853
checker: multiprocessing.Process(); a running checker process used
854
to see if the client lives. 'None' if no process is
855
running.
856
checker_callback_tag: a GLib event source tag, or None
285
857
checker_command: string; External command which is run to check
286
858
if client lives. %() expansions are done at
287
859
runtime with vars(self) as dict, so that for
288
860
instance %(name)s can be used in the command.
289
checker_initiator_tag: a gobject event source tag, or None
861
checker_initiator_tag: a GLib event source tag, or None
290
862
created: datetime.datetime(); (UTC) object creation
863
client_structure: Object describing what attributes a client has
864
and is used for storing the client at exit
291
865
current_checker_command: string; current running checker_command
292
disable_hook: If set, called by disable() as disable_hook(self)
293
disable_initiator_tag: a gobject event source tag, or None
866
disable_initiator_tag: a GLib event source tag, or None
294
867
enabled: bool()
295
868
fingerprint: string (40 or 32 hexadecimal digits); used to
296
uniquely identify the client
869
uniquely identify an OpenPGP client
870
key_id: string (64 hexadecimal digits); used to uniquely identify
871
a client using raw public keys
297
872
host: string; available for use by the checker command
298
873
interval: datetime.timedelta(); How often to start a new checker
299
874
last_approval_request: datetime.datetime(); (UTC) or None
300
875
last_checked_ok: datetime.datetime(); (UTC) or None
301
last_enabled: datetime.datetime(); (UTC)
876
last_checker_status: integer between 0 and 255 reflecting exit
877
status of last checker. -1 reflects crashed
878
checker, -2 means no checker completed yet.
879
last_checker_signal: The signal which killed the last checker, if
880
last_checker_status is -1
881
last_enabled: datetime.datetime(); (UTC) or None
302
882
name: string; from the config file, used in log messages and
303
883
D-Bus identifiers
304
884
secret: bytestring; sent verbatim (over TLS) to client
305
885
timeout: datetime.timedelta(); How long from last_checked_ok
306
886
until this client is disabled
307
extended_timeout: extra long timeout when password has been sent
887
extended_timeout: extra long timeout when secret has been sent
308
888
runtime_expansions: Allowed attributes for runtime expansion.
309
889
expires: datetime.datetime(); time (UTC) when a client will be
310
890
disabled, or None
891
server_settings: The server_settings dict from main()
311
892
"""
312
893
313
894
runtime_expansions = ("approval_delay", "approval_duration",
314
"created", "enabled", "fingerprint",
315
"host", "interval", "last_checked_ok",
895
"created", "enabled", "expires", "key_id",
896
"fingerprint", "host", "interval",
897
"last_approval_request", "last_checked_ok",
316
898
"last_enabled", "name", "timeout")
317
318
def timeout_milliseconds(self):
319
"Return the 'timeout' attribute in milliseconds"
320
return _timedelta_to_milliseconds(self.timeout)
321
322
def extended_timeout_milliseconds(self):
323
"Return the 'extended_timeout' attribute in milliseconds"
324
return _timedelta_to_milliseconds(self.extended_timeout)
325
326
def interval_milliseconds(self):
327
"Return the 'interval' attribute in milliseconds"
328
return _timedelta_to_milliseconds(self.interval)
329
330
def approval_delay_milliseconds(self):
331
return _timedelta_to_milliseconds(self.approval_delay)
332
333
def __init__(self, name = None, disable_hook=None, config=None):
334
"""Note: the 'checker' key in 'config' sets the
335
'checker_command' attribute and *not* the 'checker'
336
attribute."""
899
client_defaults = {
900
"timeout": "PT5M",
901
"extended_timeout": "PT15M",
902
"interval": "PT2M",
903
"checker": "fping -q -- %%(host)s",
904
"host": "",
905
"approval_delay": "PT0S",
906
"approval_duration": "PT1S",
907
"approved_by_default": "True",
908
"enabled": "True",
909
}
910
911
@staticmethod
912
def config_parser(config):
913
"""Construct a new dict of client settings of this form:
914
{ client_name: {setting_name: value, ...}, ...}
915
with exceptions for any special settings as defined above.
916
NOTE: Must be a pure function. Must return the same result
917
value given the same arguments.
918
"""
919
settings = {}
920
for client_name in config.sections():
921
section = dict(config.items(client_name))
922
client = settings[client_name] = {}
923
924
client["host"] = section["host"]
925
# Reformat values from string types to Python types
926
client["approved_by_default"] = config.getboolean(
927
client_name, "approved_by_default")
928
client["enabled"] = config.getboolean(client_name,
929
"enabled")
930
931
# Uppercase and remove spaces from key_id and fingerprint
932
# for later comparison purposes with return value from the
933
# key_id() and fingerprint() functions
934
client["key_id"] = (section.get("key_id", "").upper()
935
.replace(" ", ""))
936
client["fingerprint"] = (section["fingerprint"].upper()
937
.replace(" ", ""))
938
if "secret" in section:
939
client["secret"] = codecs.decode(section["secret"]
940
.encode("utf-8"),
941
"base64")
942
elif "secfile" in section:
943
with open(os.path.expanduser(os.path.expandvars
944
(section["secfile"])),
945
"rb") as secfile:
946
client["secret"] = secfile.read()
947
else:
948
raise TypeError("No secret or secfile for section {}"
949
.format(section))
950
client["timeout"] = string_to_delta(section["timeout"])
951
client["extended_timeout"] = string_to_delta(
952
section["extended_timeout"])
953
client["interval"] = string_to_delta(section["interval"])
954
client["approval_delay"] = string_to_delta(
955
section["approval_delay"])
956
client["approval_duration"] = string_to_delta(
957
section["approval_duration"])
958
client["checker_command"] = section["checker"]
959
client["last_approval_request"] = None
960
client["last_checked_ok"] = None
961
client["last_checker_status"] = -2
962
963
return settings
964
965
def __init__(self, settings, name=None, server_settings=None):
337
966
self.name = name
338
if config is None:
339
config = {}
967
if server_settings is None:
968
server_settings = {}
969
self.server_settings = server_settings
970
# adding all client settings
971
for setting, value in settings.items():
972
setattr(self, setting, value)
973
974
if self.enabled:
975
if not hasattr(self, "last_enabled"):
976
self.last_enabled = datetime.datetime.utcnow()
977
if not hasattr(self, "expires"):
978
self.expires = (datetime.datetime.utcnow()
979
+ self.timeout)
980
else:
981
self.last_enabled = None
982
self.expires = None
983
340
984
logger.debug("Creating client %r", self.name)
341
# Uppercase and remove spaces from fingerprint for later
342
# comparison purposes with return value from the fingerprint()
343
# function
344
self.fingerprint = (config["fingerprint"].upper()
345
.replace(" ", ""))
985
logger.debug(" Key ID: %s", self.key_id)
346
986
logger.debug(" Fingerprint: %s", self.fingerprint)
347
if "secret" in config:
348
self.secret = config["secret"].decode("base64")
349
elif "secfile" in config:
350
with open(os.path.expanduser(os.path.expandvars
351
(config["secfile"])),
352
"rb") as secfile:
353
self.secret = secfile.read()
354
else:
355
raise TypeError("No secret or secfile for client %s"
356
% self.name)
357
self.host = config.get("host", "")
358
self.created = datetime.datetime.utcnow()
359
self.enabled = False
360
self.last_approval_request = None
361
self.last_enabled = None
362
self.last_checked_ok = None
363
self.timeout = string_to_delta(config["timeout"])
364
self.extended_timeout = string_to_delta(config["extended_timeout"])
365
self.interval = string_to_delta(config["interval"])
366
self.disable_hook = disable_hook
987
self.created = settings.get("created",
988
datetime.datetime.utcnow())
989
990
# attributes specific for this server instance
367
991
self.checker = None
368
992
self.checker_initiator_tag = None
369
993
self.disable_initiator_tag = None
370
self.expires = None
371
994
self.checker_callback_tag = None
372
self.checker_command = config["checker"]
373
995
self.current_checker_command = None
374
self.last_connect = None
375
self._approved = None
376
self.approved_by_default = config.get("approved_by_default",
377
True)
996
self.approved = None
378
997
self.approvals_pending = 0
379
self.approval_delay = string_to_delta(
380
config["approval_delay"])
381
self.approval_duration = string_to_delta(
382
config["approval_duration"])
383
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
384
998
self.changedstate = multiprocessing_manager.Condition(
999
multiprocessing_manager.Lock())
1000
self.client_structure = [attr
1001
for attr in self.__dict__.keys()
1002
if not attr.startswith("_")]
1003
self.client_structure.append("client_structure")
1004
1005
for name, t in inspect.getmembers(
1006
type(self), lambda obj: isinstance(obj, property)):
1007
if not name.startswith("_"):
1008
self.client_structure.append(name)
1009
1010
# Send notice to process children that client state has changed
385
1011
def send_changedstate(self):
386
self.changedstate.acquire()
387
self.changedstate.notify_all()
388
self.changedstate.release()
389
1012
with self.changedstate:
1013
self.changedstate.notify_all()
1014
390
1015
def enable(self):
391
1016
"""Start this client's checker and timeout hooks"""
392
1017
if getattr(self, "enabled", False):
393
1018
# Already enabled
394
1019
return
395
self.send_changedstate()
396
# Schedule a new checker to be started an 'interval' from now,
397
# and every interval from then on.
398
self.checker_initiator_tag = (gobject.timeout_add
399
(self.interval_milliseconds(),
400
self.start_checker))
401
# Schedule a disable() when 'timeout' has passed
402
1020
self.expires = datetime.datetime.utcnow() + self.timeout
403
self.disable_initiator_tag = (gobject.timeout_add
404
(self.timeout_milliseconds(),
405
self.disable))
406
1021
self.enabled = True
407
1022
self.last_enabled = datetime.datetime.utcnow()
408
# Also start a new checker *right now*.
409
self.start_checker()
410
1023
self.init_checker()
1024
self.send_changedstate()
1025
411
1026
def disable(self, quiet=True):
412
1027
"""Disable this client."""
413
1028
if not getattr(self, "enabled", False):
414
1029
return False
415
1030
if not quiet:
416
self.send_changedstate()
417
if not quiet:
418
1031
logger.info("Disabling client %s", self.name)
419
if getattr(self, "disable_initiator_tag", False):
420
gobject.source_remove(self.disable_initiator_tag)
1032
if getattr(self, "disable_initiator_tag", None) is not None:
1033
GLib.source_remove(self.disable_initiator_tag)
421
1034
self.disable_initiator_tag = None
422
1035
self.expires = None
423
if getattr(self, "checker_initiator_tag", False):
424
gobject.source_remove(self.checker_initiator_tag)
1036
if getattr(self, "checker_initiator_tag", None) is not None:
1037
GLib.source_remove(self.checker_initiator_tag)
425
1038
self.checker_initiator_tag = None
426
1039
self.stop_checker()
427
if self.disable_hook:
428
self.disable_hook(self)
429
1040
self.enabled = False
430
# Do not run this again if called by a gobject.timeout_add
1041
if not quiet:
1042
self.send_changedstate()
1043
# Do not run this again if called by a GLib.timeout_add
431
1044
return False
432
1045
433
1046
def __del__(self):
434
self.disable_hook = None
435
1047
self.disable()
436
437
def checker_callback(self, pid, condition, command):
1048
1049
def init_checker(self):
1050
# Schedule a new checker to be started an 'interval' from now,
1051
# and every interval from then on.
1052
if self.checker_initiator_tag is not None:
1053
GLib.source_remove(self.checker_initiator_tag)
1054
self.checker_initiator_tag = GLib.timeout_add(
1055
random.randrange(int(self.interval.total_seconds() * 1000
1056
+ 1)),
1057
self.start_checker)
1058
# Schedule a disable() when 'timeout' has passed
1059
if self.disable_initiator_tag is not None:
1060
GLib.source_remove(self.disable_initiator_tag)
1061
self.disable_initiator_tag = GLib.timeout_add(
1062
int(self.timeout.total_seconds() * 1000), self.disable)
1063
# Also start a new checker *right now*.
1064
self.start_checker()
1065
1066
def checker_callback(self, source, condition, connection,
1067
command):
438
1068
"""The checker has completed, so take appropriate actions."""
1069
# Read return code from connection (see call_pipe)
1070
returncode = connection.recv()
1071
connection.close()
1072
if self.checker is not None:
1073
self.checker.join()
439
1074
self.checker_callback_tag = None
440
1075
self.checker = None
441
if os.WIFEXITED(condition):
442
exitstatus = os.WEXITSTATUS(condition)
443
if exitstatus == 0:
1076
1077
if returncode >= 0:
1078
self.last_checker_status = returncode
1079
self.last_checker_signal = None
1080
if self.last_checker_status == 0:
444
1081
logger.info("Checker for %(name)s succeeded",
445
1082
vars(self))
446
1083
self.checked_ok()
447
1084
else:
448
logger.info("Checker for %(name)s failed",
449
vars(self))
1085
logger.info("Checker for %(name)s failed", vars(self))
450
1086
else:
1087
self.last_checker_status = -1
1088
self.last_checker_signal = -returncode
451
1089
logger.warning("Checker for %(name)s crashed?",
452
1090
vars(self))
453
454
def checked_ok(self, timeout=None):
455
"""Bump up the timeout for this client.
456
457
This should only be called when the client has been seen,
458
alive and well.
459
"""
1091
return False
1092
1093
def checked_ok(self):
1094
"""Assert that the client has been seen, alive and well."""
1095
self.last_checked_ok = datetime.datetime.utcnow()
1096
self.last_checker_status = 0
1097
self.last_checker_signal = None
1098
self.bump_timeout()
1099
1100
def bump_timeout(self, timeout=None):
1101
"""Bump up the timeout for this client."""
460
1102
if timeout is None:
461
1103
timeout = self.timeout
462
self.last_checked_ok = datetime.datetime.utcnow()
463
gobject.source_remove(self.disable_initiator_tag)
464
self.expires = datetime.datetime.utcnow() + timeout
465
self.disable_initiator_tag = (gobject.timeout_add
466
(_timedelta_to_milliseconds(timeout),
467
self.disable))
468
1104
if self.disable_initiator_tag is not None:
1105
GLib.source_remove(self.disable_initiator_tag)
1106
self.disable_initiator_tag = None
1107
if getattr(self, "enabled", False):
1108
self.disable_initiator_tag = GLib.timeout_add(
1109
int(timeout.total_seconds() * 1000), self.disable)
1110
self.expires = datetime.datetime.utcnow() + timeout
1111
469
1112
def need_approval(self):
470
1113
self.last_approval_request = datetime.datetime.utcnow()
471
1114
472
1115
def start_checker(self):
473
1116
"""Start a new checker subprocess if one is not running.
474
1117
475
1118
If a checker already exists, leave it running and do
476
1119
nothing."""
477
1120
# The reason for not killing a running checker is that if we
478
# did that, then if a checker (for some reason) started
479
# running slowly and taking more than 'interval' time, the
480
# client would inevitably timeout, since no checker would get
481
# a chance to run to completion. If we instead leave running
1121
# did that, and if a checker (for some reason) started running
1122
# slowly and taking more than 'interval' time, then the client
1123
# would inevitably timeout, since no checker would get a
1124
# chance to run to completion. If we instead leave running
482
1125
# checkers alone, the checker would have to take more time
483
1126
# than 'timeout' for the client to be disabled, which is as it
484
1127
# should be.
485
486
# If a checker exists, make sure it is not a zombie
487
try:
488
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
489
except (AttributeError, OSError) as error:
490
if (isinstance(error, OSError)
491
and error.errno != errno.ECHILD):
492
raise error
493
else:
494
if pid:
495
logger.warning("Checker was a zombie")
496
gobject.source_remove(self.checker_callback_tag)
497
self.checker_callback(pid, status,
498
self.current_checker_command)
1128
1129
if self.checker is not None and not self.checker.is_alive():
1130
logger.warning("Checker was not alive; joining")
1131
self.checker.join()
1132
self.checker = None
499
1133
# Start a new checker if needed
500
1134
if self.checker is None:
1135
# Escape attributes for the shell
1136
escaped_attrs = {
1137
attr: shlex.quote(str(getattr(self, attr)))
1138
for attr in self.runtime_expansions}
501
1139
try:
502
# In case checker_command has exactly one % operator
503
command = self.checker_command % self.host
504
except TypeError:
505
# Escape attributes for the shell
506
escaped_attrs = dict(
507
(attr,
508
re.escape(unicode(str(getattr(self, attr, "")),
509
errors=
510
'replace')))
511
for attr in
512
self.runtime_expansions)
513
514
try:
515
command = self.checker_command % escaped_attrs
516
except TypeError as error:
517
logger.error('Could not format string "%s":'
518
' %s', self.checker_command, error)
519
return True # Try again later
1140
command = self.checker_command % escaped_attrs
1141
except TypeError as error:
1142
logger.error('Could not format string "%s"',
1143
self.checker_command,
1144
exc_info=error)
1145
return True # Try again later
520
1146
self.current_checker_command = command
521
try:
522
logger.info("Starting checker %r for %s",
523
command, self.name)
524
# We don't need to redirect stdout and stderr, since
525
# in normal mode, that is already done by daemon(),
526
# and in debug mode we don't want to. (Stdin is
527
# always replaced by /dev/null.)
528
self.checker = subprocess.Popen(command,
529
close_fds=True,
530
shell=True, cwd="/")
531
self.checker_callback_tag = (gobject.child_watch_add
532
(self.checker.pid,
533
self.checker_callback,
534
data=command))
535
# The checker may have completed before the gobject
536
# watch was added. Check for this.
537
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
538
if pid:
539
gobject.source_remove(self.checker_callback_tag)
540
self.checker_callback(pid, status, command)
541
except OSError as error:
542
logger.error("Failed to start subprocess: %s",
543
error)
544
# Re-run this periodically if run by gobject.timeout_add
1147
logger.info("Starting checker %r for %s", command,
1148
self.name)
1149
# We don't need to redirect stdout and stderr, since
1150
# in normal mode, that is already done by daemon(),
1151
# and in debug mode we don't want to. (Stdin is
1152
# always replaced by /dev/null.)
1153
# The exception is when not debugging but nevertheless
1154
# running in the foreground; use the previously
1155
# created wnull.
1156
popen_args = {"close_fds": True,
1157
"shell": True,
1158
"cwd": "/"}
1159
if (not self.server_settings["debug"]
1160
and self.server_settings["foreground"]):
1161
popen_args.update({"stdout": wnull,
1162
"stderr": wnull})
1163
pipe = multiprocessing.Pipe(duplex=False)
1164
self.checker = multiprocessing.Process(
1165
target=call_pipe,
1166
args=(pipe[1], subprocess.call, command),
1167
kwargs=popen_args)
1168
self.checker.start()
1169
self.checker_callback_tag = GLib.io_add_watch(
1170
GLib.IOChannel.unix_new(pipe[0].fileno()),
1171
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1172
self.checker_callback, pipe[0], command)
1173
# Re-run this periodically if run by GLib.timeout_add
545
1174
return True
546
1175
547
1176
def stop_checker(self):
548
1177
"""Force the checker process, if any, to stop."""
549
1178
if self.checker_callback_tag:
550
gobject.source_remove(self.checker_callback_tag)
1179
GLib.source_remove(self.checker_callback_tag)
551
1180
self.checker_callback_tag = None
552
1181
if getattr(self, "checker", None) is None:
553
1182
return
554
1183
logger.debug("Stopping checker for %(name)s", vars(self))
555
try:
556
os.kill(self.checker.pid, signal.SIGTERM)
557
#time.sleep(0.5)
558
#if self.checker.poll() is None:
559
# os.kill(self.checker.pid, signal.SIGKILL)
560
except OSError as error:
561
if error.errno != errno.ESRCH: # No such process
562
raise
1184
self.checker.terminate()
563
1185
self.checker = None
564
1186
565
1187
566
def dbus_service_property(dbus_interface, signature="v",
567
access="readwrite", byte_arrays=False):
1188
def dbus_service_property(dbus_interface,
1189
signature="v",
1190
access="readwrite",
1191
byte_arrays=False):
568
1192
"""Decorators for marking methods of a DBusObjectWithProperties to
569
1193
become properties on the D-Bus.
570
1194
571
1195
The decorated method will be called with no arguments by "Get"
572
1196
and with one argument by "Set".
573
1197
574
1198
The parameters, where they are supported, are the same as
575
1199
dbus.service.method, except there is only "signature", since the
576
1200
type from Get() and the type sent to Set() is the same.
579
1203
# "Set" method, so we fail early here:
580
1204
if byte_arrays and signature != "ay":
581
1205
raise ValueError("Byte arrays not supported for non-'ay'"
582
" signature %r" % signature)
1206
" signature {!r}".format(signature))
1207
583
1208
def decorator(func):
584
1209
func._dbus_is_property = True
585
1210
func._dbus_interface = dbus_interface
588
1213
func._dbus_name = func.__name__
589
1214
if func._dbus_name.endswith("_dbus_property"):
590
1215
func._dbus_name = func._dbus_name[:-14]
591
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
592
return func
1216
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1217
return func
1218
1219
return decorator
1220
1221
1222
def dbus_interface_annotations(dbus_interface):
1223
"""Decorator for marking functions returning interface annotations
1224
1225
Usage:
1226
1227
@dbus_interface_annotations("org.example.Interface")
1228
def _foo(self): # Function name does not matter
1229
return {"org.freedesktop.DBus.Deprecated": "true",
1230
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1231
"false"}
1232
"""
1233
1234
def decorator(func):
1235
func._dbus_is_interface = True
1236
func._dbus_interface = dbus_interface
1237
func._dbus_name = dbus_interface
1238
return func
1239
1240
return decorator
1241
1242
1243
def dbus_annotations(annotations):
1244
"""Decorator to annotate D-Bus methods, signals or properties
1245
Usage:
1246
1247
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1248
"org.freedesktop.DBus.Property."
1249
"EmitsChangedSignal": "false"})
1250
@dbus_service_property("org.example.Interface", signature="b",
1251
access="r")
1252
def Property_dbus_property(self):
1253
return dbus.Boolean(False)
1254
1255
See also the DBusObjectWithAnnotations class.
1256
"""
1257
1258
def decorator(func):
1259
func._dbus_annotations = annotations
1260
return func
1261
593
1262
return decorator
594
1263
595
1264
596
1265
class DBusPropertyException(dbus.exceptions.DBusException):
597
1266
"""A base class for D-Bus property-related exceptions
598
1267
"""
599
def __unicode__(self):
600
return unicode(str(self))
1268
pass
601
1269
602
1270
603
1271
class DBusPropertyAccessException(DBusPropertyException):
612
1280
pass
613
1281
614
1282
615
class DBusObjectWithProperties(dbus.service.Object):
1283
class DBusObjectWithAnnotations(dbus.service.Object):
1284
"""A D-Bus object with annotations.
1285
1286
Classes inheriting from this can use the dbus_annotations
1287
decorator to add annotations to methods or signals.
1288
"""
1289
1290
@staticmethod
1291
def _is_dbus_thing(thing):
1292
"""Returns a function testing if an attribute is a D-Bus thing
1293
1294
If called like _is_dbus_thing("method") it returns a function
1295
suitable for use as predicate to inspect.getmembers().
1296
"""
1297
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1298
False)
1299
1300
def _get_all_dbus_things(self, thing):
1301
"""Returns a generator of (name, attribute) pairs
1302
"""
1303
return ((getattr(athing.__get__(self), "_dbus_name", name),
1304
athing.__get__(self))
1305
for cls in self.__class__.__mro__
1306
for name, athing in
1307
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1308
1309
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1310
out_signature="s",
1311
path_keyword='object_path',
1312
connection_keyword='connection')
1313
def Introspect(self, object_path, connection):
1314
"""Overloading of standard D-Bus method.
1315
1316
Inserts annotation tags on methods and signals.
1317
"""
1318
xmlstring = dbus.service.Object.Introspect(self, object_path,
1319
connection)
1320
try:
1321
document = xml.dom.minidom.parseString(xmlstring)
1322
1323
for if_tag in document.getElementsByTagName("interface"):
1324
# Add annotation tags
1325
for typ in ("method", "signal"):
1326
for tag in if_tag.getElementsByTagName(typ):
1327
annots = dict()
1328
for name, prop in (self.
1329
_get_all_dbus_things(typ)):
1330
if (name == tag.getAttribute("name")
1331
and prop._dbus_interface
1332
== if_tag.getAttribute("name")):
1333
annots.update(getattr(
1334
prop, "_dbus_annotations", {}))
1335
for name, value in annots.items():
1336
ann_tag = document.createElement(
1337
"annotation")
1338
ann_tag.setAttribute("name", name)
1339
ann_tag.setAttribute("value", value)
1340
tag.appendChild(ann_tag)
1341
# Add interface annotation tags
1342
for annotation, value in dict(
1343
itertools.chain.from_iterable(
1344
annotations().items()
1345
for name, annotations
1346
in self._get_all_dbus_things("interface")
1347
if name == if_tag.getAttribute("name")
1348
)).items():
1349
ann_tag = document.createElement("annotation")
1350
ann_tag.setAttribute("name", annotation)
1351
ann_tag.setAttribute("value", value)
1352
if_tag.appendChild(ann_tag)
1353
# Fix argument name for the Introspect method itself
1354
if (if_tag.getAttribute("name")
1355
== dbus.INTROSPECTABLE_IFACE):
1356
for cn in if_tag.getElementsByTagName("method"):
1357
if cn.getAttribute("name") == "Introspect":
1358
for arg in cn.getElementsByTagName("arg"):
1359
if (arg.getAttribute("direction")
1360
== "out"):
1361
arg.setAttribute("name",
1362
"xml_data")
1363
xmlstring = document.toxml("utf-8")
1364
document.unlink()
1365
except (AttributeError, xml.dom.DOMException,
1366
xml.parsers.expat.ExpatError) as error:
1367
logger.error("Failed to override Introspection method",
1368
exc_info=error)
1369
return xmlstring
1370
1371
1372
class DBusObjectWithProperties(DBusObjectWithAnnotations):
616
1373
"""A D-Bus object with properties.
617
1374
618
1375
Classes inheriting from this can use the dbus_service_property
619
1376
decorator to expose methods as D-Bus properties. It exposes the
620
1377
standard Get(), Set(), and GetAll() methods on the D-Bus.
621
1378
"""
622
623
@staticmethod
624
def _is_dbus_property(obj):
625
return getattr(obj, "_dbus_is_property", False)
626
627
def _get_all_dbus_properties(self):
628
"""Returns a generator of (name, attribute) pairs
629
"""
630
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
631
for cls in self.__class__.__mro__
632
for name, prop in inspect.getmembers(cls, self._is_dbus_property))
633
1379
634
1380
def _get_dbus_property(self, interface_name, property_name):
635
1381
"""Returns a bound method if one exists which is a D-Bus
636
1382
property with the specified name and interface.
637
1383
"""
638
for cls in self.__class__.__mro__:
639
for name, value in inspect.getmembers(cls, self._is_dbus_property):
640
if value._dbus_name == property_name and value._dbus_interface == interface_name:
1384
for cls in self.__class__.__mro__:
1385
for name, value in inspect.getmembers(
1386
cls, self._is_dbus_thing("property")):
1387
if (value._dbus_name == property_name
1388
and value._dbus_interface == interface_name):
641
1389
return value.__get__(self)
642
1390
643
1391
# No such property
644
raise DBusPropertyNotFound(self.dbus_object_path + ":"
645
+ interface_name + "."
646
+ property_name)
647
648
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1392
raise DBusPropertyNotFound("{}:{}.{}".format(
1393
self.dbus_object_path, interface_name, property_name))
1394
1395
@classmethod
1396
def _get_all_interface_names(cls):
1397
"""Get a sequence of all interfaces supported by an object"""
1398
return (name for name in set(getattr(getattr(x, attr),
1399
"_dbus_interface", None)
1400
for x in (inspect.getmro(cls))
1401
for attr in dir(x))
1402
if name is not None)
1403
1404
@dbus.service.method(dbus.PROPERTIES_IFACE,
1405
in_signature="ss",
649
1406
out_signature="v")
650
1407
def Get(self, interface_name, property_name):
651
1408
"""Standard D-Bus property Get() method, see D-Bus standard.
657
1414
if not hasattr(value, "variant_level"):
658
1415
return value
659
1416
return type(value)(value, variant_level=value.variant_level+1)
660
1417
661
1418
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
662
1419
def Set(self, interface_name, property_name, value):
663
1420
"""Standard D-Bus property Set() method, see D-Bus standard.
669
1426
# The byte_arrays option is not supported yet on
670
1427
# signatures other than "ay".
671
1428
if prop._dbus_signature != "ay":
672
raise ValueError
673
value = dbus.ByteArray(''.join(unichr(byte)
674
for byte in value))
1429
raise ValueError("Byte arrays not supported for non-"
1430
"'ay' signature {!r}"
1431
.format(prop._dbus_signature))
1432
value = dbus.ByteArray(bytes(value))
675
1433
prop(value)
676
677
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1434
1435
@dbus.service.method(dbus.PROPERTIES_IFACE,
1436
in_signature="s",
678
1437
out_signature="a{sv}")
679
1438
def GetAll(self, interface_name):
680
1439
"""Standard D-Bus property GetAll() method, see D-Bus
681
1440
standard.
682
1441
683
1442
Note: Will not include properties with access="write".
684
1443
"""
685
all = {}
686
for name, prop in self._get_all_dbus_properties():
1444
properties = {}
1445
for name, prop in self._get_all_dbus_things("property"):
687
1446
if (interface_name
688
1447
and interface_name != prop._dbus_interface):
689
1448
# Interface non-empty but did not match
693
1452
continue
694
1453
value = prop()
695
1454
if not hasattr(value, "variant_level"):
696
all[name] = value
1455
properties[name] = value
697
1456
continue
698
all[name] = type(value)(value, variant_level=
699
value.variant_level+1)
700
return dbus.Dictionary(all, signature="sv")
701
1457
properties[name] = type(value)(
1458
value, variant_level=value.variant_level + 1)
1459
return dbus.Dictionary(properties, signature="sv")
1460
1461
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1462
def PropertiesChanged(self, interface_name, changed_properties,
1463
invalidated_properties):
1464
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1465
standard.
1466
"""
1467
pass
1468
702
1469
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
703
1470
out_signature="s",
704
1471
path_keyword='object_path',
705
1472
connection_keyword='connection')
706
1473
def Introspect(self, object_path, connection):
707
"""Standard D-Bus method, overloaded to insert property tags.
1474
"""Overloading of standard D-Bus method.
1475
1476
Inserts property tags and interface annotation tags.
708
1477
"""
709
xmlstring = dbus.service.Object.Introspect(self, object_path,
710
connection)
1478
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1479
object_path,
1480
connection)
711
1481
try:
712
1482
document = xml.dom.minidom.parseString(xmlstring)
1483
713
1484
def make_tag(document, name, prop):
714
1485
e = document.createElement("property")
715
1486
e.setAttribute("name", name)
716
1487
e.setAttribute("type", prop._dbus_signature)
717
1488
e.setAttribute("access", prop._dbus_access)
718
1489
return e
1490
719
1491
for if_tag in document.getElementsByTagName("interface"):
1492
# Add property tags
720
1493
for tag in (make_tag(document, name, prop)
721
1494
for name, prop
722
in self._get_all_dbus_properties()
1495
in self._get_all_dbus_things("property")
723
1496
if prop._dbus_interface
724
1497
== if_tag.getAttribute("name")):
725
1498
if_tag.appendChild(tag)
1499
# Add annotation tags for properties
1500
for tag in if_tag.getElementsByTagName("property"):
1501
annots = dict()
1502
for name, prop in self._get_all_dbus_things(
1503
"property"):
1504
if (name == tag.getAttribute("name")
1505
and prop._dbus_interface
1506
== if_tag.getAttribute("name")):
1507
annots.update(getattr(
1508
prop, "_dbus_annotations", {}))
1509
for name, value in annots.items():
1510
ann_tag = document.createElement(
1511
"annotation")
1512
ann_tag.setAttribute("name", name)
1513
ann_tag.setAttribute("value", value)
1514
tag.appendChild(ann_tag)
726
1515
# Add the names to the return values for the
727
1516
# "org.freedesktop.DBus.Properties" methods
728
1517
if (if_tag.getAttribute("name")
743
1532
except (AttributeError, xml.dom.DOMException,
744
1533
xml.parsers.expat.ExpatError) as error:
745
1534
logger.error("Failed to override Introspection method",
746
error)
747
return xmlstring
748
749
750
def datetime_to_dbus (dt, variant_level=0):
1535
exc_info=error)
1536
return xmlstring
1537
1538
1539
try:
1540
dbus.OBJECT_MANAGER_IFACE
1541
except AttributeError:
1542
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1543
1544
1545
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1546
"""A D-Bus object with an ObjectManager.
1547
1548
Classes inheriting from this exposes the standard
1549
GetManagedObjects call and the InterfacesAdded and
1550
InterfacesRemoved signals on the standard
1551
"org.freedesktop.DBus.ObjectManager" interface.
1552
1553
Note: No signals are sent automatically; they must be sent
1554
manually.
1555
"""
1556
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1557
out_signature="a{oa{sa{sv}}}")
1558
def GetManagedObjects(self):
1559
"""This function must be overridden"""
1560
raise NotImplementedError()
1561
1562
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1563
signature="oa{sa{sv}}")
1564
def InterfacesAdded(self, object_path, interfaces_and_properties):
1565
pass
1566
1567
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1568
def InterfacesRemoved(self, object_path, interfaces):
1569
pass
1570
1571
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1572
out_signature="s",
1573
path_keyword='object_path',
1574
connection_keyword='connection')
1575
def Introspect(self, object_path, connection):
1576
"""Overloading of standard D-Bus method.
1577
1578
Override return argument name of GetManagedObjects to be
1579
"objpath_interfaces_and_properties"
1580
"""
1581
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1582
object_path,
1583
connection)
1584
try:
1585
document = xml.dom.minidom.parseString(xmlstring)
1586
1587
for if_tag in document.getElementsByTagName("interface"):
1588
# Fix argument name for the GetManagedObjects method
1589
if (if_tag.getAttribute("name")
1590
== dbus.OBJECT_MANAGER_IFACE):
1591
for cn in if_tag.getElementsByTagName("method"):
1592
if (cn.getAttribute("name")
1593
== "GetManagedObjects"):
1594
for arg in cn.getElementsByTagName("arg"):
1595
if (arg.getAttribute("direction")
1596
== "out"):
1597
arg.setAttribute(
1598
"name",
1599
"objpath_interfaces"
1600
"_and_properties")
1601
xmlstring = document.toxml("utf-8")
1602
document.unlink()
1603
except (AttributeError, xml.dom.DOMException,
1604
xml.parsers.expat.ExpatError) as error:
1605
logger.error("Failed to override Introspection method",
1606
exc_info=error)
1607
return xmlstring
1608
1609
1610
def datetime_to_dbus(dt, variant_level=0):
751
1611
"""Convert a UTC datetime.datetime() to a D-Bus type."""
752
1612
if dt is None:
753
return dbus.String("", variant_level = variant_level)
754
return dbus.String(dt.isoformat(),
755
variant_level=variant_level)
756
757
class transitional_dbus_metaclass(DBusObjectWithProperties.__metaclass__):
758
def __new__(mcs, name, bases, attr):
759
for attrname, old_dbusobj in inspect.getmembers(bases[0]):
760
new_interface = getattr(old_dbusobj, "_dbus_interface", "").replace("se.bsnet.fukt.", "se.recompile.")
761
if (getattr(old_dbusobj, "_dbus_is_signal", False)
762
and old_dbusobj._dbus_interface.startswith("se.bsnet.fukt.Mandos")):
763
unwrappedfunc = dict(zip(old_dbusobj.func_code.co_freevars,
764
old_dbusobj.__closure__))["func"].cell_contents
765
newfunc = types.FunctionType(unwrappedfunc.func_code,
766
unwrappedfunc.func_globals,
767
unwrappedfunc.func_name,
768
unwrappedfunc.func_defaults,
769
unwrappedfunc.func_closure)
770
new_dbusfunc = dbus.service.signal(
771
new_interface, old_dbusobj._dbus_signature)(newfunc)
772
attr["_transitional_" + attrname] = new_dbusfunc
773
774
def fixscope(func1, func2):
775
def newcall(*args, **kwargs):
776
func1(*args, **kwargs)
777
func2(*args, **kwargs)
778
return newcall
779
780
attr[attrname] = fixscope(old_dbusobj, new_dbusfunc)
781
782
elif (getattr(old_dbusobj, "_dbus_is_method", False)
783
and old_dbusobj._dbus_interface.startswith("se.bsnet.fukt.Mandos")):
784
new_dbusfunc = (dbus.service.method
785
(new_interface,
786
old_dbusobj._dbus_in_signature,
787
old_dbusobj._dbus_out_signature)
788
(types.FunctionType
789
(old_dbusobj.func_code,
790
old_dbusobj.func_globals,
791
old_dbusobj.func_name,
792
old_dbusobj.func_defaults,
793
old_dbusobj.func_closure)))
794
795
attr[attrname] = new_dbusfunc
796
elif (getattr(old_dbusobj, "_dbus_is_property", False)
797
and old_dbusobj._dbus_interface.startswith("se.bsnet.fukt.Mandos")):
798
new_dbusfunc = (dbus_service_property
799
(new_interface,
800
old_dbusobj._dbus_signature,
801
old_dbusobj._dbus_access,
802
old_dbusobj._dbus_get_args_options["byte_arrays"])
803
(types.FunctionType
804
(old_dbusobj.func_code,
805
old_dbusobj.func_globals,
806
old_dbusobj.func_name,
807
old_dbusobj.func_defaults,
808
old_dbusobj.func_closure)))
809
810
attr[attrname] = new_dbusfunc
811
return type.__new__(mcs, name, bases, attr)
812
1613
return dbus.String("", variant_level=variant_level)
1614
return dbus.String(dt.isoformat(), variant_level=variant_level)
1615
1616
1617
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1618
"""A class decorator; applied to a subclass of
1619
dbus.service.Object, it will add alternate D-Bus attributes with
1620
interface names according to the "alt_interface_names" mapping.
1621
Usage:
1622
1623
@alternate_dbus_interfaces({"org.example.Interface":
1624
"net.example.AlternateInterface"})
1625
class SampleDBusObject(dbus.service.Object):
1626
@dbus.service.method("org.example.Interface")
1627
def SampleDBusMethod():
1628
pass
1629
1630
The above "SampleDBusMethod" on "SampleDBusObject" will be
1631
reachable via two interfaces: "org.example.Interface" and
1632
"net.example.AlternateInterface", the latter of which will have
1633
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1634
"true", unless "deprecate" is passed with a False value.
1635
1636
This works for methods and signals, and also for D-Bus properties
1637
(from DBusObjectWithProperties) and interfaces (from the
1638
dbus_interface_annotations decorator).
1639
"""
1640
1641
def wrapper(cls):
1642
for orig_interface_name, alt_interface_name in (
1643
alt_interface_names.items()):
1644
attr = {}
1645
interface_names = set()
1646
# Go though all attributes of the class
1647
for attrname, attribute in inspect.getmembers(cls):
1648
# Ignore non-D-Bus attributes, and D-Bus attributes
1649
# with the wrong interface name
1650
if (not hasattr(attribute, "_dbus_interface")
1651
or not attribute._dbus_interface.startswith(
1652
orig_interface_name)):
1653
continue
1654
# Create an alternate D-Bus interface name based on
1655
# the current name
1656
alt_interface = attribute._dbus_interface.replace(
1657
orig_interface_name, alt_interface_name)
1658
interface_names.add(alt_interface)
1659
# Is this a D-Bus signal?
1660
if getattr(attribute, "_dbus_is_signal", False):
1661
# Extract the original non-method undecorated
1662
# function by black magic
1663
if sys.version_info.major == 2:
1664
nonmethod_func = (dict(
1665
zip(attribute.func_code.co_freevars,
1666
attribute.__closure__))
1667
["func"].cell_contents)
1668
else:
1669
nonmethod_func = (dict(
1670
zip(attribute.__code__.co_freevars,
1671
attribute.__closure__))
1672
["func"].cell_contents)
1673
# Create a new, but exactly alike, function
1674
# object, and decorate it to be a new D-Bus signal
1675
# with the alternate D-Bus interface name
1676
new_function = copy_function(nonmethod_func)
1677
new_function = (dbus.service.signal(
1678
alt_interface,
1679
attribute._dbus_signature)(new_function))
1680
# Copy annotations, if any
1681
try:
1682
new_function._dbus_annotations = dict(
1683
attribute._dbus_annotations)
1684
except AttributeError:
1685
pass
1686
1687
# Define a creator of a function to call both the
1688
# original and alternate functions, so both the
1689
# original and alternate signals gets sent when
1690
# the function is called
1691
def fixscope(func1, func2):
1692
"""This function is a scope container to pass
1693
func1 and func2 to the "call_both" function
1694
outside of its arguments"""
1695
1696
@functools.wraps(func2)
1697
def call_both(*args, **kwargs):
1698
"""This function will emit two D-Bus
1699
signals by calling func1 and func2"""
1700
func1(*args, **kwargs)
1701
func2(*args, **kwargs)
1702
# Make wrapper function look like a D-Bus
1703
# signal
1704
for name, attr in inspect.getmembers(func2):
1705
if name.startswith("_dbus_"):
1706
setattr(call_both, name, attr)
1707
1708
return call_both
1709
# Create the "call_both" function and add it to
1710
# the class
1711
attr[attrname] = fixscope(attribute, new_function)
1712
# Is this a D-Bus method?
1713
elif getattr(attribute, "_dbus_is_method", False):
1714
# Create a new, but exactly alike, function
1715
# object. Decorate it to be a new D-Bus method
1716
# with the alternate D-Bus interface name. Add it
1717
# to the class.
1718
attr[attrname] = (
1719
dbus.service.method(
1720
alt_interface,
1721
attribute._dbus_in_signature,
1722
attribute._dbus_out_signature)
1723
(copy_function(attribute)))
1724
# Copy annotations, if any
1725
try:
1726
attr[attrname]._dbus_annotations = dict(
1727
attribute._dbus_annotations)
1728
except AttributeError:
1729
pass
1730
# Is this a D-Bus property?
1731
elif getattr(attribute, "_dbus_is_property", False):
1732
# Create a new, but exactly alike, function
1733
# object, and decorate it to be a new D-Bus
1734
# property with the alternate D-Bus interface
1735
# name. Add it to the class.
1736
attr[attrname] = (dbus_service_property(
1737
alt_interface, attribute._dbus_signature,
1738
attribute._dbus_access,
1739
attribute._dbus_get_args_options
1740
["byte_arrays"])
1741
(copy_function(attribute)))
1742
# Copy annotations, if any
1743
try:
1744
attr[attrname]._dbus_annotations = dict(
1745
attribute._dbus_annotations)
1746
except AttributeError:
1747
pass
1748
# Is this a D-Bus interface?
1749
elif getattr(attribute, "_dbus_is_interface", False):
1750
# Create a new, but exactly alike, function
1751
# object. Decorate it to be a new D-Bus interface
1752
# with the alternate D-Bus interface name. Add it
1753
# to the class.
1754
attr[attrname] = (
1755
dbus_interface_annotations(alt_interface)
1756
(copy_function(attribute)))
1757
if deprecate:
1758
# Deprecate all alternate interfaces
1759
iname = "_AlternateDBusNames_interface_annotation{}"
1760
for interface_name in interface_names:
1761
1762
@dbus_interface_annotations(interface_name)
1763
def func(self):
1764
return {"org.freedesktop.DBus.Deprecated":
1765
"true"}
1766
# Find an unused name
1767
for aname in (iname.format(i)
1768
for i in itertools.count()):
1769
if aname not in attr:
1770
attr[aname] = func
1771
break
1772
if interface_names:
1773
# Replace the class with a new subclass of it with
1774
# methods, signals, etc. as created above.
1775
if sys.version_info.major == 2:
1776
cls = type(b"{}Alternate".format(cls.__name__),
1777
(cls, ), attr)
1778
else:
1779
cls = type("{}Alternate".format(cls.__name__),
1780
(cls, ), attr)
1781
return cls
1782
1783
return wrapper
1784
1785
1786
@alternate_dbus_interfaces({"se.recompile.Mandos":
1787
"se.bsnet.fukt.Mandos"})
813
1788
class ClientDBus(Client, DBusObjectWithProperties):
814
1789
"""A Client class using D-Bus
815
1790
816
1791
Attributes:
817
1792
dbus_object_path: dbus.ObjectPath
818
1793
bus: dbus.SystemBus()
819
1794
"""
820
1795
821
1796
runtime_expansions = (Client.runtime_expansions
822
+ ("dbus_object_path",))
823
1797
+ ("dbus_object_path", ))
1798
1799
_interface = "se.recompile.Mandos.Client"
1800
824
1801
# dbus.service.Object doesn't use super(), so we can't either.
825
826
def __init__(self, bus = None, *args, **kwargs):
827
self._approvals_pending = 0
1802
1803
def __init__(self, bus=None, *args, **kwargs):
828
1804
self.bus = bus
829
1805
Client.__init__(self, *args, **kwargs)
830
1806
# Only now, when this client is initialized, can it show up on
831
1807
# the D-Bus
832
client_object_name = unicode(self.name).translate(
1808
client_object_name = str(self.name).translate(
833
1809
{ord("."): ord("_"),
834
1810
ord("-"): ord("_")})
835
self.dbus_object_path = (dbus.ObjectPath
836
("/clients/" + client_object_name))
1811
self.dbus_object_path = dbus.ObjectPath(
1812
"/clients/" + client_object_name)
837
1813
DBusObjectWithProperties.__init__(self, self.bus,
838
1814
self.dbus_object_path)
839
840
def notifychangeproperty(transform_func,
841
dbus_name, type_func=lambda x: x,
842
variant_level=1):
843
""" Modify a variable so that its a property that announce its
844
changes to DBus.
845
transform_fun: Function that takes a value and transform it to
846
DBus type.
847
dbus_name: DBus name of the variable
1815
1816
def notifychangeproperty(transform_func, dbus_name,
1817
type_func=lambda x: x,
1818
variant_level=1,
1819
invalidate_only=False,
1820
_interface=_interface):
1821
""" Modify a variable so that it's a property which announces
1822
its changes to DBus.
1823
1824
transform_fun: Function that takes a value and a variant_level
1825
and transforms it to a D-Bus type.
1826
dbus_name: D-Bus name of the variable
848
1827
type_func: Function that transform the value before sending it
849
to DBus
850
variant_level: DBus variant level. default: 1
1828
to the D-Bus. Default: no transform
1829
variant_level: D-Bus variant level. Default: 1
851
1830
"""
852
real_value = [None,]
1831
attrname = "_{}".format(dbus_name)
1832
853
1833
def setter(self, value):
854
old_value = real_value[0]
855
real_value[0] = value
856
1834
if hasattr(self, "dbus_object_path"):
857
if type_func(old_value) != type_func(real_value[0]):
858
dbus_value = transform_func(type_func(real_value[0]),
859
variant_level)
860
self.PropertyChanged(dbus.String(dbus_name),
861
dbus_value)
862
863
return property(lambda self: real_value[0], setter)
864
865
1835
if (not hasattr(self, attrname) or
1836
type_func(getattr(self, attrname, None))
1837
!= type_func(value)):
1838
if invalidate_only:
1839
self.PropertiesChanged(
1840
_interface, dbus.Dictionary(),
1841
dbus.Array((dbus_name, )))
1842
else:
1843
dbus_value = transform_func(
1844
type_func(value),
1845
variant_level=variant_level)
1846
self.PropertyChanged(dbus.String(dbus_name),
1847
dbus_value)
1848
self.PropertiesChanged(
1849
_interface,
1850
dbus.Dictionary({dbus.String(dbus_name):
1851
dbus_value}),
1852
dbus.Array())
1853
setattr(self, attrname, value)
1854
1855
return property(lambda self: getattr(self, attrname), setter)
1856
866
1857
expires = notifychangeproperty(datetime_to_dbus, "Expires")
867
1858
approvals_pending = notifychangeproperty(dbus.Boolean,
868
1859
"ApprovalPending",
869
type_func = bool)
1860
type_func=bool)
870
1861
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
871
1862
last_enabled = notifychangeproperty(datetime_to_dbus,
872
1863
"LastEnabled")
873
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
874
type_func = lambda checker: checker is not None)
1864
checker = notifychangeproperty(
1865
dbus.Boolean, "CheckerRunning",
1866
type_func=lambda checker: checker is not None)
875
1867
last_checked_ok = notifychangeproperty(datetime_to_dbus,
876
1868
"LastCheckedOK")
877
last_approval_request = notifychangeproperty(datetime_to_dbus,
878
"LastApprovalRequest")
1869
last_checker_status = notifychangeproperty(dbus.Int16,
1870
"LastCheckerStatus")
1871
last_approval_request = notifychangeproperty(
1872
datetime_to_dbus, "LastApprovalRequest")
879
1873
approved_by_default = notifychangeproperty(dbus.Boolean,
880
1874
"ApprovedByDefault")
881
approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",
882
type_func = _timedelta_to_milliseconds)
883
approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",
884
type_func = _timedelta_to_milliseconds)
1875
approval_delay = notifychangeproperty(
1876
dbus.UInt64, "ApprovalDelay",
1877
type_func=lambda td: td.total_seconds() * 1000)
1878
approval_duration = notifychangeproperty(
1879
dbus.UInt64, "ApprovalDuration",
1880
type_func=lambda td: td.total_seconds() * 1000)
885
1881
host = notifychangeproperty(dbus.String, "Host")
886
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
887
type_func = _timedelta_to_milliseconds)
888
extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",
889
type_func = _timedelta_to_milliseconds)
890
interval = notifychangeproperty(dbus.UInt16, "Interval",
891
type_func = _timedelta_to_milliseconds)
1882
timeout = notifychangeproperty(
1883
dbus.UInt64, "Timeout",
1884
type_func=lambda td: td.total_seconds() * 1000)
1885
extended_timeout = notifychangeproperty(
1886
dbus.UInt64, "ExtendedTimeout",
1887
type_func=lambda td: td.total_seconds() * 1000)
1888
interval = notifychangeproperty(
1889
dbus.UInt64, "Interval",
1890
type_func=lambda td: td.total_seconds() * 1000)
892
1891
checker_command = notifychangeproperty(dbus.String, "Checker")
893
1892
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1893
invalidate_only=True)
1894
894
1895
del notifychangeproperty
895
1896
896
1897
def __del__(self, *args, **kwargs):
897
1898
try:
898
1899
self.remove_from_connection()
901
1902
if hasattr(DBusObjectWithProperties, "__del__"):
902
1903
DBusObjectWithProperties.__del__(self, *args, **kwargs)
903
1904
Client.__del__(self, *args, **kwargs)
904
905
def checker_callback(self, pid, condition, command,
906
*args, **kwargs):
907
self.checker_callback_tag = None
908
self.checker = None
909
if os.WIFEXITED(condition):
910
exitstatus = os.WEXITSTATUS(condition)
1905
1906
def checker_callback(self, source, condition,
1907
connection, command, *args, **kwargs):
1908
ret = Client.checker_callback(self, source, condition,
1909
connection, command, *args,
1910
**kwargs)
1911
exitstatus = self.last_checker_status
1912
if exitstatus >= 0:
911
1913
# Emit D-Bus signal
912
1914
self.CheckerCompleted(dbus.Int16(exitstatus),
913
dbus.Int64(condition),
1915
# This is specific to GNU libC
1916
dbus.Int64(exitstatus << 8),
914
1917
dbus.String(command))
915
1918
else:
916
1919
# Emit D-Bus signal
917
1920
self.CheckerCompleted(dbus.Int16(-1),
918
dbus.Int64(condition),
1921
dbus.Int64(
1922
# This is specific to GNU libC
1923
(exitstatus << 8)
1924
| self.last_checker_signal),
919
1925
dbus.String(command))
920
921
return Client.checker_callback(self, pid, condition, command,
922
*args, **kwargs)
923
1926
return ret
1927
924
1928
def start_checker(self, *args, **kwargs):
925
old_checker = self.checker
926
if self.checker is not None:
927
old_checker_pid = self.checker.pid
928
else:
929
old_checker_pid = None
1929
old_checker_pid = getattr(self.checker, "pid", None)
930
1930
r = Client.start_checker(self, *args, **kwargs)
931
1931
# Only if new checker process was started
932
1932
if (self.checker is not None
934
1934
# Emit D-Bus signal
935
1935
self.CheckerStarted(self.current_checker_command)
936
1936
return r
937
1937
938
1938
def _reset_approved(self):
939
self._approved = None
1939
self.approved = None
940
1940
return False
941
1941
942
1942
def approve(self, value=True):
1943
self.approved = value
1944
GLib.timeout_add(int(self.approval_duration.total_seconds()
1945
* 1000), self._reset_approved)
943
1946
self.send_changedstate()
944
self._approved = value
945
gobject.timeout_add(_timedelta_to_milliseconds
946
(self.approval_duration),
947
self._reset_approved)
948
949
950
## D-Bus methods, signals & properties
951
_interface = "se.bsnet.fukt.Mandos.Client"
952
953
## Signals
954
1947
1948
# D-Bus methods, signals & properties
1949
1950
# Interfaces
1951
1952
# Signals
1953
955
1954
# CheckerCompleted - signal
956
1955
@dbus.service.signal(_interface, signature="nxs")
957
1956
def CheckerCompleted(self, exitcode, waitstatus, command):
958
1957
"D-Bus signal"
959
1958
pass
960
1959
961
1960
# CheckerStarted - signal
962
1961
@dbus.service.signal(_interface, signature="s")
963
1962
def CheckerStarted(self, command):
964
1963
"D-Bus signal"
965
1964
pass
966
1965
967
1966
# PropertyChanged - signal
1967
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
968
1968
@dbus.service.signal(_interface, signature="sv")
969
1969
def PropertyChanged(self, property, value):
970
1970
"D-Bus signal"
971
1971
pass
972
1972
973
1973
# GotSecret - signal
974
1974
@dbus.service.signal(_interface)
975
1975
def GotSecret(self):
978
1978
server to mandos-client
979
1979
"""
980
1980
pass
981
1981
982
1982
# Rejected - signal
983
1983
@dbus.service.signal(_interface, signature="s")
984
1984
def Rejected(self, reason):
985
1985
"D-Bus signal"
986
1986
pass
987
1987
988
1988
# NeedApproval - signal
989
1989
@dbus.service.signal(_interface, signature="tb")
990
1990
def NeedApproval(self, timeout, default):
991
1991
"D-Bus signal"
992
1992
return self.need_approval()
993
994
## Methods
995
1993
1994
# Methods
1995
996
1996
# Approve - method
997
1997
@dbus.service.method(_interface, in_signature="b")
998
1998
def Approve(self, value):
999
1999
self.approve(value)
1000
2000
1001
2001
# CheckedOK - method
1002
2002
@dbus.service.method(_interface)
1003
2003
def CheckedOK(self):
1004
2004
self.checked_ok()
1005
2005
1006
2006
# Enable - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1007
2008
@dbus.service.method(_interface)
1008
2009
def Enable(self):
1009
2010
"D-Bus method"
1010
2011
self.enable()
1011
2012
1012
2013
# StartChecker - method
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1013
2015
@dbus.service.method(_interface)
1014
2016
def StartChecker(self):
1015
2017
"D-Bus method"
1016
2018
self.start_checker()
1017
2019
1018
2020
# Disable - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1019
2022
@dbus.service.method(_interface)
1020
2023
def Disable(self):
1021
2024
"D-Bus method"
1022
2025
self.disable()
1023
2026
1024
2027
# StopChecker - method
2028
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1025
2029
@dbus.service.method(_interface)
1026
2030
def StopChecker(self):
1027
2031
self.stop_checker()
1028
1029
## Properties
1030
2032
2033
# Properties
2034
1031
2035
# ApprovalPending - property
1032
2036
@dbus_service_property(_interface, signature="b", access="read")
1033
2037
def ApprovalPending_dbus_property(self):
1034
2038
return dbus.Boolean(bool(self.approvals_pending))
1035
2039
1036
2040
# ApprovedByDefault - property
1037
@dbus_service_property(_interface, signature="b",
2041
@dbus_service_property(_interface,
2042
signature="b",
1038
2043
access="readwrite")
1039
2044
def ApprovedByDefault_dbus_property(self, value=None):
1040
2045
if value is None: # get
1041
2046
return dbus.Boolean(self.approved_by_default)
1042
2047
self.approved_by_default = bool(value)
1043
2048
1044
2049
# ApprovalDelay - property
1045
@dbus_service_property(_interface, signature="t",
2050
@dbus_service_property(_interface,
2051
signature="t",
1046
2052
access="readwrite")
1047
2053
def ApprovalDelay_dbus_property(self, value=None):
1048
2054
if value is None: # get
1049
return dbus.UInt64(self.approval_delay_milliseconds())
2055
return dbus.UInt64(self.approval_delay.total_seconds()
2056
* 1000)
1050
2057
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1051
2058
1052
2059
# ApprovalDuration - property
1053
@dbus_service_property(_interface, signature="t",
2060
@dbus_service_property(_interface,
2061
signature="t",
1054
2062
access="readwrite")
1055
2063
def ApprovalDuration_dbus_property(self, value=None):
1056
2064
if value is None: # get
1057
return dbus.UInt64(_timedelta_to_milliseconds(
1058
self.approval_duration))
2065
return dbus.UInt64(self.approval_duration.total_seconds()
2066
* 1000)
1059
2067
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1060
2068
1061
2069
# Name - property
2070
@dbus_annotations(
2071
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1062
2072
@dbus_service_property(_interface, signature="s", access="read")
1063
2073
def Name_dbus_property(self):
1064
2074
return dbus.String(self.name)
1065
2075
2076
# KeyID - property
2077
@dbus_annotations(
2078
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2079
@dbus_service_property(_interface, signature="s", access="read")
2080
def KeyID_dbus_property(self):
2081
return dbus.String(self.key_id)
2082
1066
2083
# Fingerprint - property
2084
@dbus_annotations(
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1067
2086
@dbus_service_property(_interface, signature="s", access="read")
1068
2087
def Fingerprint_dbus_property(self):
1069
2088
return dbus.String(self.fingerprint)
1070
2089
1071
2090
# Host - property
1072
@dbus_service_property(_interface, signature="s",
2091
@dbus_service_property(_interface,
2092
signature="s",
1073
2093
access="readwrite")
1074
2094
def Host_dbus_property(self, value=None):
1075
2095
if value is None: # get
1076
2096
return dbus.String(self.host)
1077
self.host = value
1078
2097
self.host = str(value)
2098
1079
2099
# Created - property
2100
@dbus_annotations(
2101
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1080
2102
@dbus_service_property(_interface, signature="s", access="read")
1081
2103
def Created_dbus_property(self):
1082
return dbus.String(datetime_to_dbus(self.created))
1083
2104
return datetime_to_dbus(self.created)
2105
1084
2106
# LastEnabled - property
1085
2107
@dbus_service_property(_interface, signature="s", access="read")
1086
2108
def LastEnabled_dbus_property(self):
1087
2109
return datetime_to_dbus(self.last_enabled)
1088
2110
1089
2111
# Enabled - property
1090
@dbus_service_property(_interface, signature="b",
2112
@dbus_service_property(_interface,
2113
signature="b",
1091
2114
access="readwrite")
1092
2115
def Enabled_dbus_property(self, value=None):
1093
2116
if value is None: # get
1096
2119
self.enable()
1097
2120
else:
1098
2121
self.disable()
1099
2122
1100
2123
# LastCheckedOK - property
1101
@dbus_service_property(_interface, signature="s",
2124
@dbus_service_property(_interface,
2125
signature="s",
1102
2126
access="readwrite")
1103
2127
def LastCheckedOK_dbus_property(self, value=None):
1104
2128
if value is not None:
1105
2129
self.checked_ok()
1106
2130
return
1107
2131
return datetime_to_dbus(self.last_checked_ok)
1108
2132
2133
# LastCheckerStatus - property
2134
@dbus_service_property(_interface, signature="n", access="read")
2135
def LastCheckerStatus_dbus_property(self):
2136
return dbus.Int16(self.last_checker_status)
2137
1109
2138
# Expires - property
1110
2139
@dbus_service_property(_interface, signature="s", access="read")
1111
2140
def Expires_dbus_property(self):
1112
2141
return datetime_to_dbus(self.expires)
1113
2142
1114
2143
# LastApprovalRequest - property
1115
2144
@dbus_service_property(_interface, signature="s", access="read")
1116
2145
def LastApprovalRequest_dbus_property(self):
1117
2146
return datetime_to_dbus(self.last_approval_request)
1118
2147
1119
2148
# Timeout - property
1120
@dbus_service_property(_interface, signature="t",
2149
@dbus_service_property(_interface,
2150
signature="t",
1121
2151
access="readwrite")
1122
2152
def Timeout_dbus_property(self, value=None):
1123
2153
if value is None: # get
1124
return dbus.UInt64(self.timeout_milliseconds())
2154
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2155
old_timeout = self.timeout
1125
2156
self.timeout = datetime.timedelta(0, 0, 0, value)
1126
if getattr(self, "disable_initiator_tag", None) is None:
1127
return
1128
# Reschedule timeout
1129
gobject.source_remove(self.disable_initiator_tag)
1130
self.disable_initiator_tag = None
1131
self.expires = None
1132
time_to_die = (self.
1133
_timedelta_to_milliseconds((self
1134
.last_checked_ok
1135
+ self.timeout)
1136
- datetime.datetime
1137
.utcnow()))
1138
if time_to_die <= 0:
1139
# The timeout has passed
1140
self.disable()
1141
else:
1142
self.expires = (datetime.datetime.utcnow()
1143
+ datetime.timedelta(milliseconds = time_to_die))
1144
self.disable_initiator_tag = (gobject.timeout_add
1145
(time_to_die, self.disable))
1146
2157
# Reschedule disabling
2158
if self.enabled:
2159
now = datetime.datetime.utcnow()
2160
self.expires += self.timeout - old_timeout
2161
if self.expires <= now:
2162
# The timeout has passed
2163
self.disable()
2164
else:
2165
if (getattr(self, "disable_initiator_tag", None)
2166
is None):
2167
return
2168
GLib.source_remove(self.disable_initiator_tag)
2169
self.disable_initiator_tag = GLib.timeout_add(
2170
int((self.expires - now).total_seconds() * 1000),
2171
self.disable)
2172
1147
2173
# ExtendedTimeout - property
1148
@dbus_service_property(_interface, signature="t",
2174
@dbus_service_property(_interface,
2175
signature="t",
1149
2176
access="readwrite")
1150
2177
def ExtendedTimeout_dbus_property(self, value=None):
1151
2178
if value is None: # get
1152
return dbus.UInt64(self.extended_timeout_milliseconds())
2179
return dbus.UInt64(self.extended_timeout.total_seconds()
2180
* 1000)
1153
2181
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1154
2182
1155
2183
# Interval - property
1156
@dbus_service_property(_interface, signature="t",
2184
@dbus_service_property(_interface,
2185
signature="t",
1157
2186
access="readwrite")
1158
2187
def Interval_dbus_property(self, value=None):
1159
2188
if value is None: # get
1160
return dbus.UInt64(self.interval_milliseconds())
2189
return dbus.UInt64(self.interval.total_seconds() * 1000)
1161
2190
self.interval = datetime.timedelta(0, 0, 0, value)
1162
2191
if getattr(self, "checker_initiator_tag", None) is None:
1163
2192
return
1164
# Reschedule checker run
1165
gobject.source_remove(self.checker_initiator_tag)
1166
self.checker_initiator_tag = (gobject.timeout_add
1167
(value, self.start_checker))
1168
self.start_checker() # Start one now, too
1169
2193
if self.enabled:
2194
# Reschedule checker run
2195
GLib.source_remove(self.checker_initiator_tag)
2196
self.checker_initiator_tag = GLib.timeout_add(
2197
value, self.start_checker)
2198
self.start_checker() # Start one now, too
2199
1170
2200
# Checker - property
1171
@dbus_service_property(_interface, signature="s",
2201
@dbus_service_property(_interface,
2202
signature="s",
1172
2203
access="readwrite")
1173
2204
def Checker_dbus_property(self, value=None):
1174
2205
if value is None: # get
1175
2206
return dbus.String(self.checker_command)
1176
self.checker_command = value
1177
2207
self.checker_command = str(value)
2208
1178
2209
# CheckerRunning - property
1179
@dbus_service_property(_interface, signature="b",
2210
@dbus_service_property(_interface,
2211
signature="b",
1180
2212
access="readwrite")
1181
2213
def CheckerRunning_dbus_property(self, value=None):
1182
2214
if value is None: # get
1185
2217
self.start_checker()
1186
2218
else:
1187
2219
self.stop_checker()
1188
2220
1189
2221
# ObjectPath - property
2222
@dbus_annotations(
2223
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2224
"org.freedesktop.DBus.Deprecated": "true"})
1190
2225
@dbus_service_property(_interface, signature="o", access="read")
1191
2226
def ObjectPath_dbus_property(self):
1192
return self.dbus_object_path # is already a dbus.ObjectPath
1193
2227
return self.dbus_object_path # is already a dbus.ObjectPath
2228
1194
2229
# Secret = property
1195
@dbus_service_property(_interface, signature="ay",
1196
access="write", byte_arrays=True)
2230
@dbus_annotations(
2231
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2232
"invalidates"})
2233
@dbus_service_property(_interface,
2234
signature="ay",
2235
access="write",
2236
byte_arrays=True)
1197
2237
def Secret_dbus_property(self, value):
1198
self.secret = str(value)
1199
2238
self.secret = bytes(value)
2239
1200
2240
del _interface
1201
2241
1202
2242
1203
class ProxyClient(object):
1204
def __init__(self, child_pipe, fpr, address):
2243
class ProxyClient:
2244
def __init__(self, child_pipe, key_id, fpr, address):
1205
2245
self._pipe = child_pipe
1206
self._pipe.send(('init', fpr, address))
2246
self._pipe.send(('init', key_id, fpr, address))
1207
2247
if not self._pipe.recv():
1208
raise KeyError()
1209
2248
raise KeyError(key_id or fpr)
2249
1210
2250
def __getattribute__(self, name):
1211
if(name == '_pipe'):
2251
if name == '_pipe':
1212
2252
return super(ProxyClient, self).__getattribute__(name)
1213
2253
self._pipe.send(('getattr', name))
1214
2254
data = self._pipe.recv()
1215
2255
if data[0] == 'data':
1216
2256
return data[1]
1217
2257
if data[0] == 'function':
2258
1218
2259
def func(*args, **kwargs):
1219
2260
self._pipe.send(('funcall', name, args, kwargs))
1220
2261
return self._pipe.recv()[1]
2262
1221
2263
return func
1222
2264
1223
2265
def __setattr__(self, name, value):
1224
if(name == '_pipe'):
2266
if name == '_pipe':
1225
2267
return super(ProxyClient, self).__setattr__(name, value)
1226
2268
self._pipe.send(('setattr', name, value))
1227
2269
1228
class ClientDBusTransitional(ClientDBus):
1229
__metaclass__ = transitional_dbus_metaclass
1230
2270
1231
2271
class ClientHandler(socketserver.BaseRequestHandler, object):
1232
2272
"""A class to handle client connections.
1233
2273
1234
2274
Instantiated once for each connection to handle it.
1235
2275
Note: This will run in its own forked process."""
1236
2276
1237
2277
def handle(self):
1238
2278
with contextlib.closing(self.server.child_pipe) as child_pipe:
1239
2279
logger.info("TCP connection from: %s",
1240
unicode(self.client_address))
2280
str(self.client_address))
1241
2281
logger.debug("Pipe FD: %d",
1242
2282
self.server.child_pipe.fileno())
1243
1244
session = (gnutls.connection
1245
.ClientSession(self.request,
1246
gnutls.connection
1247
.X509Credentials()))
1248
1249
# Note: gnutls.connection.X509Credentials is really a
1250
# generic GnuTLS certificate credentials object so long as
1251
# no X.509 keys are added to it. Therefore, we can use it
1252
# here despite using OpenPGP certificates.
1253
1254
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1255
# "+AES-256-CBC", "+SHA1",
1256
# "+COMP-NULL", "+CTYPE-OPENPGP",
1257
# "+DHE-DSS"))
2283
2284
session = gnutls.ClientSession(self.request)
2285
2286
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2287
# "+AES-256-CBC", "+SHA1",
2288
# "+COMP-NULL", "+CTYPE-OPENPGP",
2289
# "+DHE-DSS"))
1258
2290
# Use a fallback default, since this MUST be set.
1259
2291
priority = self.server.gnutls_priority
1260
2292
if priority is None:
1261
2293
priority = "NORMAL"
1262
(gnutls.library.functions
1263
.gnutls_priority_set_direct(session._c_object,
1264
priority, None))
1265
2294
gnutls.priority_set_direct(session._c_object,
2295
priority.encode("utf-8"),
2296
None)
2297
1266
2298
# Start communication using the Mandos protocol
1267
2299
# Get protocol number
1268
2300
line = self.request.makefile().readline()
1269
2301
logger.debug("Protocol version: %r", line)
1270
2302
try:
1271
2303
if int(line.strip().split()[0]) > 1:
1272
raise RuntimeError
2304
raise RuntimeError(line)
1273
2305
except (ValueError, IndexError, RuntimeError) as error:
1274
2306
logger.error("Unknown protocol version: %s", error)
1275
2307
return
1276
2308
1277
2309
# Start GnuTLS connection
1278
2310
try:
1279
2311
session.handshake()
1280
except gnutls.errors.GNUTLSError as error:
2312
except gnutls.Error as error:
1281
2313
logger.warning("Handshake failed: %s", error)
1282
2314
# Do not run session.bye() here: the session is not
1283
2315
# established. Just abandon the request.
1284
2316
return
1285
2317
logger.debug("Handshake succeeded")
1286
2318
1287
2319
approval_required = False
1288
2320
try:
1289
try:
1290
fpr = self.fingerprint(self.peer_certificate
1291
(session))
1292
except (TypeError,
1293
gnutls.errors.GNUTLSError) as error:
1294
logger.warning("Bad certificate: %s", error)
1295
return
1296
logger.debug("Fingerprint: %s", fpr)
1297
1298
try:
1299
client = ProxyClient(child_pipe, fpr,
2321
if gnutls.has_rawpk:
2322
fpr = b""
2323
try:
2324
key_id = self.key_id(
2325
self.peer_certificate(session))
2326
except (TypeError, gnutls.Error) as error:
2327
logger.warning("Bad certificate: %s", error)
2328
return
2329
logger.debug("Key ID: %s", key_id)
2330
2331
else:
2332
key_id = b""
2333
try:
2334
fpr = self.fingerprint(
2335
self.peer_certificate(session))
2336
except (TypeError, gnutls.Error) as error:
2337
logger.warning("Bad certificate: %s", error)
2338
return
2339
logger.debug("Fingerprint: %s", fpr)
2340
2341
try:
2342
client = ProxyClient(child_pipe, key_id, fpr,
1300
2343
self.client_address)
1301
2344
except KeyError:
1302
2345
return
1303
2346
1304
2347
if client.approval_delay:
1305
2348
delay = client.approval_delay
1306
2349
client.approvals_pending += 1
1307
2350
approval_required = True
1308
2351
1309
2352
while True:
1310
2353
if not client.enabled:
1311
2354
logger.info("Client %s is disabled",
1312
client.name)
2355
client.name)
1313
2356
if self.server.use_dbus:
1314
2357
# Emit D-Bus signal
1315
client.Rejected("Disabled")
2358
client.Rejected("Disabled")
1316
2359
return
1317
1318
if client._approved or not client.approval_delay:
1319
#We are approved or approval is disabled
2360
2361
if client.approved or not client.approval_delay:
2362
# We are approved or approval is disabled
1320
2363
break
1321
elif client._approved is None:
2364
elif client.approved is None:
1322
2365
logger.info("Client %s needs approval",
1323
2366
client.name)
1324
2367
if self.server.use_dbus:
1325
2368
# Emit D-Bus signal
1326
2369
client.NeedApproval(
1327
client.approval_delay_milliseconds(),
1328
client.approved_by_default)
2370
client.approval_delay.total_seconds()
2371
* 1000, client.approved_by_default)
1329
2372
else:
1330
2373
logger.warning("Client %s was not approved",
1331
2374
client.name)
1333
2376
# Emit D-Bus signal
1334
2377
client.Rejected("Denied")
1335
2378
return
1336
1337
#wait until timeout or approved
1338
#x = float(client._timedelta_to_milliseconds(delay))
2379
2380
# wait until timeout or approved
1339
2381
time = datetime.datetime.now()
1340
2382
client.changedstate.acquire()
1341
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2383
client.changedstate.wait(delay.total_seconds())
1342
2384
client.changedstate.release()
1343
2385
time2 = datetime.datetime.now()
1344
2386
if (time2 - time) >= delay:
1354
2396
break
1355
2397
else:
1356
2398
delay -= time2 - time
1357
1358
sent_size = 0
1359
while sent_size < len(client.secret):
1360
try:
1361
sent = session.send(client.secret[sent_size:])
1362
except gnutls.errors.GNUTLSError as error:
1363
logger.warning("gnutls send failed")
1364
return
1365
logger.debug("Sent: %d, remaining: %d",
1366
sent, len(client.secret)
1367
- (sent_size + sent))
1368
sent_size += sent
1369
2399
2400
try:
2401
session.send(client.secret)
2402
except gnutls.Error as error:
2403
logger.warning("gnutls send failed",
2404
exc_info=error)
2405
return
2406
1370
2407
logger.info("Sending secret to %s", client.name)
1371
# bump the timeout as if seen
1372
client.checked_ok(client.extended_timeout)
2408
# bump the timeout using extended_timeout
2409
client.bump_timeout(client.extended_timeout)
1373
2410
if self.server.use_dbus:
1374
2411
# Emit D-Bus signal
1375
2412
client.GotSecret()
1376
2413
1377
2414
finally:
1378
2415
if approval_required:
1379
2416
client.approvals_pending -= 1
1380
2417
try:
1381
2418
session.bye()
1382
except gnutls.errors.GNUTLSError as error:
1383
logger.warning("GnuTLS bye failed")
1384
2419
except gnutls.Error as error:
2420
logger.warning("GnuTLS bye failed",
2421
exc_info=error)
2422
1385
2423
@staticmethod
1386
2424
def peer_certificate(session):
1387
"Return the peer's OpenPGP certificate as a bytestring"
1388
# If not an OpenPGP certificate...
1389
if (gnutls.library.functions
1390
.gnutls_certificate_type_get(session._c_object)
1391
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1392
# ...do the normal thing
1393
return session.peer_certificate
2425
"Return the peer's certificate as a bytestring"
2426
try:
2427
cert_type = gnutls.certificate_type_get2(session._c_object,
2428
gnutls.CTYPE_PEERS)
2429
except AttributeError:
2430
cert_type = gnutls.certificate_type_get(session._c_object)
2431
if gnutls.has_rawpk:
2432
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2433
else:
2434
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2435
# If not a valid certificate type...
2436
if cert_type not in valid_cert_types:
2437
logger.info("Cert type %r not in %r", cert_type,
2438
valid_cert_types)
2439
# ...return invalid data
2440
return b""
1394
2441
list_size = ctypes.c_uint(1)
1395
cert_list = (gnutls.library.functions
1396
.gnutls_certificate_get_peers
2442
cert_list = (gnutls.certificate_get_peers
1397
2443
(session._c_object, ctypes.byref(list_size)))
1398
2444
if not bool(cert_list) and list_size.value != 0:
1399
raise gnutls.errors.GNUTLSError("error getting peer"
1400
" certificate")
2445
raise gnutls.Error("error getting peer certificate")
1401
2446
if list_size.value == 0:
1402
2447
return None
1403
2448
cert = cert_list[0]
1404
2449
return ctypes.string_at(cert.data, cert.size)
1405
2450
2451
@staticmethod
2452
def key_id(certificate):
2453
"Convert a certificate bytestring to a hexdigit key ID"
2454
# New GnuTLS "datum" with the public key
2455
datum = gnutls.datum_t(
2456
ctypes.cast(ctypes.c_char_p(certificate),
2457
ctypes.POINTER(ctypes.c_ubyte)),
2458
ctypes.c_uint(len(certificate)))
2459
# XXX all these need to be created in the gnutls "module"
2460
# New empty GnuTLS certificate
2461
pubkey = gnutls.pubkey_t()
2462
gnutls.pubkey_init(ctypes.byref(pubkey))
2463
# Import the raw public key into the certificate
2464
gnutls.pubkey_import(pubkey,
2465
ctypes.byref(datum),
2466
gnutls.X509_FMT_DER)
2467
# New buffer for the key ID
2468
buf = ctypes.create_string_buffer(32)
2469
buf_len = ctypes.c_size_t(len(buf))
2470
# Get the key ID from the raw public key into the buffer
2471
gnutls.pubkey_get_key_id(pubkey,
2472
gnutls.KEYID_USE_SHA256,
2473
ctypes.cast(ctypes.byref(buf),
2474
ctypes.POINTER(ctypes.c_ubyte)),
2475
ctypes.byref(buf_len))
2476
# Deinit the certificate
2477
gnutls.pubkey_deinit(pubkey)
2478
2479
# Convert the buffer to a Python bytestring
2480
key_id = ctypes.string_at(buf, buf_len.value)
2481
# Convert the bytestring to hexadecimal notation
2482
hex_key_id = binascii.hexlify(key_id).upper()
2483
return hex_key_id
2484
1406
2485
@staticmethod
1407
2486
def fingerprint(openpgp):
1408
2487
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1409
2488
# New GnuTLS "datum" with the OpenPGP public key
1410
datum = (gnutls.library.types
1411
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1412
ctypes.POINTER
1413
(ctypes.c_ubyte)),
1414
ctypes.c_uint(len(openpgp))))
2489
datum = gnutls.datum_t(
2490
ctypes.cast(ctypes.c_char_p(openpgp),
2491
ctypes.POINTER(ctypes.c_ubyte)),
2492
ctypes.c_uint(len(openpgp)))
1415
2493
# New empty GnuTLS certificate
1416
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1417
(gnutls.library.functions
1418
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2494
crt = gnutls.openpgp_crt_t()
2495
gnutls.openpgp_crt_init(ctypes.byref(crt))
1419
2496
# Import the OpenPGP public key into the certificate
1420
(gnutls.library.functions
1421
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1422
gnutls.library.constants
1423
.GNUTLS_OPENPGP_FMT_RAW))
2497
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2498
gnutls.OPENPGP_FMT_RAW)
1424
2499
# Verify the self signature in the key
1425
2500
crtverify = ctypes.c_uint()
1426
(gnutls.library.functions
1427
.gnutls_openpgp_crt_verify_self(crt, 0,
1428
ctypes.byref(crtverify)))
2501
gnutls.openpgp_crt_verify_self(crt, 0,
2502
ctypes.byref(crtverify))
1429
2503
if crtverify.value != 0:
1430
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1431
raise (gnutls.errors.CertificateSecurityError
1432
("Verify failed"))
2504
gnutls.openpgp_crt_deinit(crt)
2505
raise gnutls.CertificateSecurityError(code
2506
=crtverify.value)
1433
2507
# New buffer for the fingerprint
1434
2508
buf = ctypes.create_string_buffer(20)
1435
2509
buf_len = ctypes.c_size_t()
1436
2510
# Get the fingerprint from the certificate into the buffer
1437
(gnutls.library.functions
1438
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1439
ctypes.byref(buf_len)))
2511
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2512
ctypes.byref(buf_len))
1440
2513
# Deinit the certificate
1441
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2514
gnutls.openpgp_crt_deinit(crt)
1442
2515
# Convert the buffer to a Python bytestring
1443
2516
fpr = ctypes.string_at(buf, buf_len.value)
1444
2517
# Convert the bytestring to hexadecimal notation
1445
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2518
hex_fpr = binascii.hexlify(fpr).upper()
1446
2519
return hex_fpr
1447
2520
1448
2521
1449
class MultiprocessingMixIn(object):
2522
class MultiprocessingMixIn:
1450
2523
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2524
1451
2525
def sub_process_main(self, request, address):
1452
2526
try:
1453
2527
self.finish_request(request, address)
1454
except:
2528
except Exception:
1455
2529
self.handle_error(request, address)
1456
2530
self.close_request(request)
1457
2531
1458
2532
def process_request(self, request, address):
1459
2533
"""Start a new process to process the request."""
1460
multiprocessing.Process(target = self.sub_process_main,
1461
args = (request, address)).start()
1462
1463
1464
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2534
proc = multiprocessing.Process(target=self.sub_process_main,
2535
args=(request, address))
2536
proc.start()
2537
return proc
2538
2539
2540
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1465
2541
""" adds a pipe to the MixIn """
2542
1466
2543
def process_request(self, request, client_address):
1467
2544
"""Overrides and wraps the original process_request().
1468
2545
1469
2546
This function creates a new pipe in self.pipe
1470
2547
"""
1471
2548
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1472
1473
super(MultiprocessingMixInWithPipe,
1474
self).process_request(request, client_address)
2549
2550
proc = MultiprocessingMixIn.process_request(self, request,
2551
client_address)
1475
2552
self.child_pipe.close()
1476
self.add_pipe(parent_pipe)
1477
1478
def add_pipe(self, parent_pipe):
2553
self.add_pipe(parent_pipe, proc)
2554
2555
def add_pipe(self, parent_pipe, proc):
1479
2556
"""Dummy function; override as necessary"""
1480
raise NotImplementedError
2557
raise NotImplementedError()
1481
2558
1482
2559
1483
2560
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1484
socketserver.TCPServer, object):
2561
socketserver.TCPServer):
1485
2562
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1486
2563
1487
2564
Attributes:
1488
2565
enabled: Boolean; whether this server is activated yet
1489
2566
interface: None or a network interface name (string)
1490
2567
use_ipv6: Boolean; to use IPv6 or not
1491
2568
"""
2569
1492
2570
def __init__(self, server_address, RequestHandlerClass,
1493
interface=None, use_ipv6=True):
2571
interface=None,
2572
use_ipv6=True,
2573
socketfd=None):
2574
"""If socketfd is set, use that file descriptor instead of
2575
creating a new one with socket.socket().
2576
"""
1494
2577
self.interface = interface
1495
2578
if use_ipv6:
1496
2579
self.address_family = socket.AF_INET6
2580
if socketfd is not None:
2581
# Save the file descriptor
2582
self.socketfd = socketfd
2583
# Save the original socket.socket() function
2584
self.socket_socket = socket.socket
2585
2586
# To implement --socket, we monkey patch socket.socket.
2587
#
2588
# (When socketserver.TCPServer is a new-style class, we
2589
# could make self.socket into a property instead of monkey
2590
# patching socket.socket.)
2591
#
2592
# Create a one-time-only replacement for socket.socket()
2593
@functools.wraps(socket.socket)
2594
def socket_wrapper(*args, **kwargs):
2595
# Restore original function so subsequent calls are
2596
# not affected.
2597
socket.socket = self.socket_socket
2598
del self.socket_socket
2599
# This time only, return a new socket object from the
2600
# saved file descriptor.
2601
return socket.fromfd(self.socketfd, *args, **kwargs)
2602
# Replace socket.socket() function with wrapper
2603
socket.socket = socket_wrapper
2604
# The socketserver.TCPServer.__init__ will call
2605
# socket.socket(), which might be our replacement,
2606
# socket_wrapper(), if socketfd was set.
1497
2607
socketserver.TCPServer.__init__(self, server_address,
1498
2608
RequestHandlerClass)
2609
1499
2610
def server_bind(self):
1500
2611
"""This overrides the normal server_bind() function
1501
2612
to bind to an interface if one was specified, and also NOT to
1502
2613
bind to an address or port if they were not specified."""
2614
global SO_BINDTODEVICE
1503
2615
if self.interface is not None:
1504
2616
if SO_BINDTODEVICE is None:
1505
logger.error("SO_BINDTODEVICE does not exist;"
1506
" cannot bind to interface %s",
1507
self.interface)
1508
else:
1509
try:
1510
self.socket.setsockopt(socket.SOL_SOCKET,
1511
SO_BINDTODEVICE,
1512
str(self.interface
1513
+ '\0'))
1514
except socket.error as error:
1515
if error[0] == errno.EPERM:
1516
logger.error("No permission to"
1517
" bind to interface %s",
1518
self.interface)
1519
elif error[0] == errno.ENOPROTOOPT:
1520
logger.error("SO_BINDTODEVICE not available;"
1521
" cannot bind to interface %s",
1522
self.interface)
1523
else:
1524
raise
2617
# Fall back to a hard-coded value which seems to be
2618
# common enough.
2619
logger.warning("SO_BINDTODEVICE not found, trying 25")
2620
SO_BINDTODEVICE = 25
2621
try:
2622
self.socket.setsockopt(
2623
socket.SOL_SOCKET, SO_BINDTODEVICE,
2624
(self.interface + "\0").encode("utf-8"))
2625
except socket.error as error:
2626
if error.errno == errno.EPERM:
2627
logger.error("No permission to bind to"
2628
" interface %s", self.interface)
2629
elif error.errno == errno.ENOPROTOOPT:
2630
logger.error("SO_BINDTODEVICE not available;"
2631
" cannot bind to interface %s",
2632
self.interface)
2633
elif error.errno == errno.ENODEV:
2634
logger.error("Interface %s does not exist,"
2635
" cannot bind", self.interface)
2636
else:
2637
raise
1525
2638
# Only bind(2) the socket if we really need to.
1526
2639
if self.server_address[0] or self.server_address[1]:
2640
if self.server_address[1]:
2641
self.allow_reuse_address = True
1527
2642
if not self.server_address[0]:
1528
2643
if self.address_family == socket.AF_INET6:
1529
any_address = "::" # in6addr_any
2644
any_address = "::" # in6addr_any
1530
2645
else:
1531
any_address = socket.INADDR_ANY
2646
any_address = "0.0.0.0" # INADDR_ANY
1532
2647
self.server_address = (any_address,
1533
2648
self.server_address[1])
1534
2649
elif not self.server_address[1]:
1535
self.server_address = (self.server_address[0],
1536
0)
2650
self.server_address = (self.server_address[0], 0)
1537
2651
# if self.interface:
1538
2652
# self.server_address = (self.server_address[0],
1539
2653
# 0, # port
1545
2659
1546
2660
class MandosServer(IPv6_TCPServer):
1547
2661
"""Mandos server.
1548
2662
1549
2663
Attributes:
1550
2664
clients: set of Client objects
1551
2665
gnutls_priority GnuTLS priority string
1552
2666
use_dbus: Boolean; to emit D-Bus signals or not
1553
1554
Assumes a gobject.MainLoop event loop.
2667
2668
Assumes a GLib.MainLoop event loop.
1555
2669
"""
2670
1556
2671
def __init__(self, server_address, RequestHandlerClass,
1557
interface=None, use_ipv6=True, clients=None,
1558
gnutls_priority=None, use_dbus=True):
2672
interface=None,
2673
use_ipv6=True,
2674
clients=None,
2675
gnutls_priority=None,
2676
use_dbus=True,
2677
socketfd=None):
1559
2678
self.enabled = False
1560
2679
self.clients = clients
1561
2680
if self.clients is None:
1562
self.clients = set()
2681
self.clients = {}
1563
2682
self.use_dbus = use_dbus
1564
2683
self.gnutls_priority = gnutls_priority
1565
2684
IPv6_TCPServer.__init__(self, server_address,
1566
2685
RequestHandlerClass,
1567
interface = interface,
1568
use_ipv6 = use_ipv6)
2686
interface=interface,
2687
use_ipv6=use_ipv6,
2688
socketfd=socketfd)
2689
1569
2690
def server_activate(self):
1570
2691
if self.enabled:
1571
2692
return socketserver.TCPServer.server_activate(self)
2693
1572
2694
def enable(self):
1573
2695
self.enabled = True
1574
def add_pipe(self, parent_pipe):
2696
2697
def add_pipe(self, parent_pipe, proc):
1575
2698
# Call "handle_ipc" for both data and EOF events
1576
gobject.io_add_watch(parent_pipe.fileno(),
1577
gobject.IO_IN | gobject.IO_HUP,
1578
functools.partial(self.handle_ipc,
1579
parent_pipe = parent_pipe))
1580
1581
def handle_ipc(self, source, condition, parent_pipe=None,
2699
GLib.io_add_watch(
2700
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2701
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2702
functools.partial(self.handle_ipc,
2703
parent_pipe=parent_pipe,
2704
proc=proc))
2705
2706
def handle_ipc(self, source, condition,
2707
parent_pipe=None,
2708
proc=None,
1582
2709
client_object=None):
1583
condition_names = {
1584
gobject.IO_IN: "IN", # There is data to read.
1585
gobject.IO_OUT: "OUT", # Data can be written (without
1586
# blocking).
1587
gobject.IO_PRI: "PRI", # There is urgent data to read.
1588
gobject.IO_ERR: "ERR", # Error condition.
1589
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1590
# broken, usually for pipes and
1591
# sockets).
1592
}
1593
conditions_string = ' | '.join(name
1594
for cond, name in
1595
condition_names.iteritems()
1596
if cond & condition)
1597
# error or the other end of multiprocessing.Pipe has closed
1598
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2710
# error, or the other end of multiprocessing.Pipe has closed
2711
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2712
# Wait for other process to exit
2713
proc.join()
1599
2714
return False
1600
2715
1601
2716
# Read a request from the child
1602
2717
request = parent_pipe.recv()
1603
2718
command = request[0]
1604
2719
1605
2720
if command == 'init':
1606
fpr = request[1]
1607
address = request[2]
1608
1609
for c in self.clients:
1610
if c.fingerprint == fpr:
2721
key_id = request[1].decode("ascii")
2722
fpr = request[2].decode("ascii")
2723
address = request[3]
2724
2725
for c in self.clients.values():
2726
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2727
continue
2728
if key_id and c.key_id == key_id:
2729
client = c
2730
break
2731
if fpr and c.fingerprint == fpr:
1611
2732
client = c
1612
2733
break
1613
2734
else:
1614
logger.info("Client not found for fingerprint: %s, ad"
1615
"dress: %s", fpr, address)
2735
logger.info("Client not found for key ID: %s, address"
2736
": %s", key_id or fpr, address)
1616
2737
if self.use_dbus:
1617
2738
# Emit D-Bus signal
1618
mandos_dbus_service.ClientNotFound(fpr, address[0])
2739
mandos_dbus_service.ClientNotFound(key_id or fpr,
2740
address[0])
1619
2741
parent_pipe.send(False)
1620
2742
return False
1621
1622
gobject.io_add_watch(parent_pipe.fileno(),
1623
gobject.IO_IN | gobject.IO_HUP,
1624
functools.partial(self.handle_ipc,
1625
parent_pipe = parent_pipe,
1626
client_object = client))
2743
2744
GLib.io_add_watch(
2745
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2746
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2747
functools.partial(self.handle_ipc,
2748
parent_pipe=parent_pipe,
2749
proc=proc,
2750
client_object=client))
1627
2751
parent_pipe.send(True)
1628
# remove the old hook in favor of the new above hook on same fileno
2752
# remove the old hook in favor of the new above hook on
2753
# same fileno
1629
2754
return False
1630
2755
if command == 'funcall':
1631
2756
funcname = request[1]
1632
2757
args = request[2]
1633
2758
kwargs = request[3]
1634
1635
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1636
2759
2760
parent_pipe.send(('data', getattr(client_object,
2761
funcname)(*args,
2762
**kwargs)))
2763
1637
2764
if command == 'getattr':
1638
2765
attrname = request[1]
1639
if callable(client_object.__getattribute__(attrname)):
1640
parent_pipe.send(('function',))
2766
if isinstance(client_object.__getattribute__(attrname),
2767
collections.abc.Callable):
2768
parent_pipe.send(('function', ))
1641
2769
else:
1642
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1643
2770
parent_pipe.send((
2771
'data', client_object.__getattribute__(attrname)))
2772
1644
2773
if command == 'setattr':
1645
2774
attrname = request[1]
1646
2775
value = request[2]
1647
2776
setattr(client_object, attrname, value)
1648
2777
1649
2778
return True
1650
2779
1651
2780
2781
def rfc3339_duration_to_delta(duration):
2782
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2783
2784
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2785
True
2786
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2787
True
2788
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2789
True
2790
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2791
True
2792
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2793
True
2794
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2795
True
2796
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2797
True
2798
"""
2799
2800
# Parsing an RFC 3339 duration with regular expressions is not
2801
# possible - there would have to be multiple places for the same
2802
# values, like seconds. The current code, while more esoteric, is
2803
# cleaner without depending on a parsing library. If Python had a
2804
# built-in library for parsing we would use it, but we'd like to
2805
# avoid excessive use of external libraries.
2806
2807
# New type for defining tokens, syntax, and semantics all-in-one
2808
Token = collections.namedtuple("Token", (
2809
"regexp", # To match token; if "value" is not None, must have
2810
# a "group" containing digits
2811
"value", # datetime.timedelta or None
2812
"followers")) # Tokens valid after this token
2813
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2814
# the "duration" ABNF definition in RFC 3339, Appendix A.
2815
token_end = Token(re.compile(r"$"), None, frozenset())
2816
token_second = Token(re.compile(r"(\d+)S"),
2817
datetime.timedelta(seconds=1),
2818
frozenset((token_end, )))
2819
token_minute = Token(re.compile(r"(\d+)M"),
2820
datetime.timedelta(minutes=1),
2821
frozenset((token_second, token_end)))
2822
token_hour = Token(re.compile(r"(\d+)H"),
2823
datetime.timedelta(hours=1),
2824
frozenset((token_minute, token_end)))
2825
token_time = Token(re.compile(r"T"),
2826
None,
2827
frozenset((token_hour, token_minute,
2828
token_second)))
2829
token_day = Token(re.compile(r"(\d+)D"),
2830
datetime.timedelta(days=1),
2831
frozenset((token_time, token_end)))
2832
token_month = Token(re.compile(r"(\d+)M"),
2833
datetime.timedelta(weeks=4),
2834
frozenset((token_day, token_end)))
2835
token_year = Token(re.compile(r"(\d+)Y"),
2836
datetime.timedelta(weeks=52),
2837
frozenset((token_month, token_end)))
2838
token_week = Token(re.compile(r"(\d+)W"),
2839
datetime.timedelta(weeks=1),
2840
frozenset((token_end, )))
2841
token_duration = Token(re.compile(r"P"), None,
2842
frozenset((token_year, token_month,
2843
token_day, token_time,
2844
token_week)))
2845
# Define starting values:
2846
# Value so far
2847
value = datetime.timedelta()
2848
found_token = None
2849
# Following valid tokens
2850
followers = frozenset((token_duration, ))
2851
# String left to parse
2852
s = duration
2853
# Loop until end token is found
2854
while found_token is not token_end:
2855
# Search for any currently valid tokens
2856
for token in followers:
2857
match = token.regexp.match(s)
2858
if match is not None:
2859
# Token found
2860
if token.value is not None:
2861
# Value found, parse digits
2862
factor = int(match.group(1), 10)
2863
# Add to value so far
2864
value += factor * token.value
2865
# Strip token from string
2866
s = token.regexp.sub("", s, 1)
2867
# Go to found token
2868
found_token = token
2869
# Set valid next tokens
2870
followers = found_token.followers
2871
break
2872
else:
2873
# No currently valid tokens were found
2874
raise ValueError("Invalid RFC 3339 duration: {!r}"
2875
.format(duration))
2876
# End token found
2877
return value
2878
2879
1652
2880
def string_to_delta(interval):
1653
2881
"""Parse a string and return a datetime.timedelta
1654
1655
>>> string_to_delta('7d')
1656
datetime.timedelta(7)
1657
>>> string_to_delta('60s')
1658
datetime.timedelta(0, 60)
1659
>>> string_to_delta('60m')
1660
datetime.timedelta(0, 3600)
1661
>>> string_to_delta('24h')
1662
datetime.timedelta(1)
1663
>>> string_to_delta('1w')
1664
datetime.timedelta(7)
1665
>>> string_to_delta('5m 30s')
1666
datetime.timedelta(0, 330)
2882
2883
>>> string_to_delta('7d') == datetime.timedelta(7)
2884
True
2885
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2886
True
2887
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2888
True
2889
>>> string_to_delta('24h') == datetime.timedelta(1)
2890
True
2891
>>> string_to_delta('1w') == datetime.timedelta(7)
2892
True
2893
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2894
True
1667
2895
"""
2896
2897
try:
2898
return rfc3339_duration_to_delta(interval)
2899
except ValueError:
2900
pass
2901
1668
2902
timevalue = datetime.timedelta(0)
1669
2903
for s in interval.split():
1670
2904
try:
1671
suffix = unicode(s[-1])
2905
suffix = s[-1]
1672
2906
value = int(s[:-1])
1673
2907
if suffix == "d":
1674
2908
delta = datetime.timedelta(value)
1681
2915
elif suffix == "w":
1682
2916
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1683
2917
else:
1684
raise ValueError("Unknown suffix %r" % suffix)
1685
except (ValueError, IndexError) as e:
2918
raise ValueError("Unknown suffix {!r}".format(suffix))
2919
except IndexError as e:
1686
2920
raise ValueError(*(e.args))
1687
2921
timevalue += delta
1688
2922
return timevalue
1689
2923
1690
2924
1691
def if_nametoindex(interface):
1692
"""Call the C function if_nametoindex(), or equivalent
1693
1694
Note: This function cannot accept a unicode string."""
1695
global if_nametoindex
1696
try:
1697
if_nametoindex = (ctypes.cdll.LoadLibrary
1698
(ctypes.util.find_library("c"))
1699
.if_nametoindex)
1700
except (OSError, AttributeError):
1701
logger.warning("Doing if_nametoindex the hard way")
1702
def if_nametoindex(interface):
1703
"Get an interface index the hard way, i.e. using fcntl()"
1704
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1705
with contextlib.closing(socket.socket()) as s:
1706
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1707
struct.pack(str("16s16x"),
1708
interface))
1709
interface_index = struct.unpack(str("I"),
1710
ifreq[16:20])[0]
1711
return interface_index
1712
return if_nametoindex(interface)
1713
1714
1715
def daemon(nochdir = False, noclose = False):
2925
def daemon(nochdir=False, noclose=False):
1716
2926
"""See daemon(3). Standard BSD Unix function.
1717
2927
1718
2928
This should really exist as os.daemon, but it doesn't (yet)."""
1719
2929
if os.fork():
1720
2930
sys.exit()
1725
2935
sys.exit()
1726
2936
if not noclose:
1727
2937
# Close all standard open file descriptors
1728
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2938
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1729
2939
if not stat.S_ISCHR(os.fstat(null).st_mode):
1730
2940
raise OSError(errno.ENODEV,
1731
"%s not a character device"
1732
% os.path.devnull)
2941
"{} not a character device"
2942
.format(os.devnull))
1733
2943
os.dup2(null, sys.stdin.fileno())
1734
2944
os.dup2(null, sys.stdout.fileno())
1735
2945
os.dup2(null, sys.stderr.fileno())
1738
2948
1739
2949
1740
2950
def main():
1741
2951
1742
2952
##################################################################
1743
2953
# Parsing of options, both command line and config file
1744
2954
1745
2955
parser = argparse.ArgumentParser()
1746
2956
parser.add_argument("-v", "--version", action="version",
1747
version = "%%(prog)s %s" % version,
2957
version="%(prog)s {}".format(version),
1748
2958
help="show version number and exit")
1749
2959
parser.add_argument("-i", "--interface", metavar="IF",
1750
2960
help="Bind to interface IF")
1756
2966
help="Run self-test")
1757
2967
parser.add_argument("--debug", action="store_true",
1758
2968
help="Debug mode; run in foreground and log"
1759
" to terminal")
2969
" to terminal", default=None)
1760
2970
parser.add_argument("--debuglevel", metavar="LEVEL",
1761
2971
help="Debug level for stdout output")
1762
2972
parser.add_argument("--priority", help="GnuTLS"
1769
2979
" files")
1770
2980
parser.add_argument("--no-dbus", action="store_false",
1771
2981
dest="use_dbus", help="Do not provide D-Bus"
1772
" system bus interface")
2982
" system bus interface", default=None)
1773
2983
parser.add_argument("--no-ipv6", action="store_false",
1774
dest="use_ipv6", help="Do not use IPv6")
2984
dest="use_ipv6", help="Do not use IPv6",
2985
default=None)
2986
parser.add_argument("--no-restore", action="store_false",
2987
dest="restore", help="Do not restore stored"
2988
" state", default=None)
2989
parser.add_argument("--socket", type=int,
2990
help="Specify a file descriptor to a network"
2991
" socket to use instead of creating one")
2992
parser.add_argument("--statedir", metavar="DIR",
2993
help="Directory to save/restore state in")
2994
parser.add_argument("--foreground", action="store_true",
2995
help="Run in foreground", default=None)
2996
parser.add_argument("--no-zeroconf", action="store_false",
2997
dest="zeroconf", help="Do not use Zeroconf",
2998
default=None)
2999
1775
3000
options = parser.parse_args()
1776
1777
if options.check:
1778
import doctest
1779
doctest.testmod()
1780
sys.exit()
1781
3001
1782
3002
# Default values for config file for server-global settings
1783
server_defaults = { "interface": "",
1784
"address": "",
1785
"port": "",
1786
"debug": "False",
1787
"priority":
1788
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1789
"servicename": "Mandos",
1790
"use_dbus": "True",
1791
"use_ipv6": "True",
1792
"debuglevel": "",
1793
}
1794
3003
if gnutls.has_rawpk:
3004
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3005
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3006
else:
3007
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3008
":+SIGN-DSA-SHA256")
3009
server_defaults = {"interface": "",
3010
"address": "",
3011
"port": "",
3012
"debug": "False",
3013
"priority": priority,
3014
"servicename": "Mandos",
3015
"use_dbus": "True",
3016
"use_ipv6": "True",
3017
"debuglevel": "",
3018
"restore": "True",
3019
"socket": "",
3020
"statedir": "/var/lib/mandos",
3021
"foreground": "False",
3022
"zeroconf": "True",
3023
}
3024
del priority
3025
1795
3026
# Parse config file for server-global settings
1796
server_config = configparser.SafeConfigParser(server_defaults)
3027
server_config = configparser.ConfigParser(server_defaults)
1797
3028
del server_defaults
1798
server_config.read(os.path.join(options.configdir,
1799
"mandos.conf"))
1800
# Convert the SafeConfigParser object to a dict
3029
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3030
# Convert the ConfigParser object to a dict
1801
3031
server_settings = server_config.defaults()
1802
3032
# Use the appropriate methods on the non-string config options
1803
for option in ("debug", "use_dbus", "use_ipv6"):
3033
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3034
"foreground", "zeroconf"):
1804
3035
server_settings[option] = server_config.getboolean("DEFAULT",
1805
3036
option)
1806
3037
if server_settings["port"]:
1807
3038
server_settings["port"] = server_config.getint("DEFAULT",
1808
3039
"port")
3040
if server_settings["socket"]:
3041
server_settings["socket"] = server_config.getint("DEFAULT",
3042
"socket")
3043
# Later, stdin will, and stdout and stderr might, be dup'ed
3044
# over with an opened os.devnull. But we don't want this to
3045
# happen with a supplied network socket.
3046
if 0 <= server_settings["socket"] <= 2:
3047
server_settings["socket"] = os.dup(server_settings
3048
["socket"])
1809
3049
del server_config
1810
3050
1811
3051
# Override the settings from the config file with command line
1812
3052
# options, if set.
1813
3053
for option in ("interface", "address", "port", "debug",
1814
"priority", "servicename", "configdir",
1815
"use_dbus", "use_ipv6", "debuglevel"):
3054
"priority", "servicename", "configdir", "use_dbus",
3055
"use_ipv6", "debuglevel", "restore", "statedir",
3056
"socket", "foreground", "zeroconf"):
1816
3057
value = getattr(options, option)
1817
3058
if value is not None:
1818
3059
server_settings[option] = value
1819
3060
del options
1820
3061
# Force all strings to be unicode
1821
3062
for option in server_settings.keys():
1822
if type(server_settings[option]) is str:
1823
server_settings[option] = unicode(server_settings[option])
3063
if isinstance(server_settings[option], bytes):
3064
server_settings[option] = (server_settings[option]
3065
.decode("utf-8"))
3066
# Force all boolean options to be boolean
3067
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3068
"foreground", "zeroconf"):
3069
server_settings[option] = bool(server_settings[option])
3070
# Debug implies foreground
3071
if server_settings["debug"]:
3072
server_settings["foreground"] = True
1824
3073
# Now we have our good server settings in "server_settings"
1825
3074
1826
3075
##################################################################
1827
3076
3077
if (not server_settings["zeroconf"]
3078
and not (server_settings["port"]
3079
or server_settings["socket"] != "")):
3080
parser.error("Needs port or socket to work without Zeroconf")
3081
1828
3082
# For convenience
1829
3083
debug = server_settings["debug"]
1830
3084
debuglevel = server_settings["debuglevel"]
1831
3085
use_dbus = server_settings["use_dbus"]
1832
3086
use_ipv6 = server_settings["use_ipv6"]
1833
3087
stored_state_path = os.path.join(server_settings["statedir"],
3088
stored_state_file)
3089
foreground = server_settings["foreground"]
3090
zeroconf = server_settings["zeroconf"]
3091
3092
if debug:
3093
initlogger(debug, logging.DEBUG)
3094
else:
3095
if not debuglevel:
3096
initlogger(debug)
3097
else:
3098
level = getattr(logging, debuglevel.upper())
3099
initlogger(debug, level)
3100
1834
3101
if server_settings["servicename"] != "Mandos":
1835
syslogger.setFormatter(logging.Formatter
1836
('Mandos (%s) [%%(process)d]:'
1837
' %%(levelname)s: %%(message)s'
1838
% server_settings["servicename"]))
1839
3102
syslogger.setFormatter(
3103
logging.Formatter('Mandos ({}) [%(process)d]:'
3104
' %(levelname)s: %(message)s'.format(
3105
server_settings["servicename"])))
3106
1840
3107
# Parse config file with clients
1841
client_defaults = { "timeout": "5m",
1842
"extended_timeout": "15m",
1843
"interval": "2m",
1844
"checker": "fping -q -- %%(host)s",
1845
"host": "",
1846
"approval_delay": "0s",
1847
"approval_duration": "1s",
1848
}
1849
client_config = configparser.SafeConfigParser(client_defaults)
3108
client_config = configparser.ConfigParser(Client.client_defaults)
1850
3109
client_config.read(os.path.join(server_settings["configdir"],
1851
3110
"clients.conf"))
1852
3111
1853
3112
global mandos_dbus_service
1854
3113
mandos_dbus_service = None
1855
1856
tcp_server = MandosServer((server_settings["address"],
1857
server_settings["port"]),
1858
ClientHandler,
1859
interface=(server_settings["interface"]
1860
or None),
1861
use_ipv6=use_ipv6,
1862
gnutls_priority=
1863
server_settings["priority"],
1864
use_dbus=use_dbus)
1865
if not debug:
1866
pidfilename = "/var/run/mandos.pid"
1867
try:
1868
pidfile = open(pidfilename, "w")
1869
except IOError:
1870
logger.error("Could not open file %r", pidfilename)
1871
1872
try:
1873
uid = pwd.getpwnam("_mandos").pw_uid
1874
gid = pwd.getpwnam("_mandos").pw_gid
1875
except KeyError:
1876
try:
1877
uid = pwd.getpwnam("mandos").pw_uid
1878
gid = pwd.getpwnam("mandos").pw_gid
3114
3115
socketfd = None
3116
if server_settings["socket"] != "":
3117
socketfd = server_settings["socket"]
3118
tcp_server = MandosServer(
3119
(server_settings["address"], server_settings["port"]),
3120
ClientHandler,
3121
interface=(server_settings["interface"] or None),
3122
use_ipv6=use_ipv6,
3123
gnutls_priority=server_settings["priority"],
3124
use_dbus=use_dbus,
3125
socketfd=socketfd)
3126
if not foreground:
3127
pidfilename = "/run/mandos.pid"
3128
if not os.path.isdir("/run/."):
3129
pidfilename = "/var/run/mandos.pid"
3130
pidfile = None
3131
try:
3132
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3133
except IOError as e:
3134
logger.error("Could not open file %r", pidfilename,
3135
exc_info=e)
3136
3137
for name, group in (("_mandos", "_mandos"),
3138
("mandos", "mandos"),
3139
("nobody", "nogroup")):
3140
try:
3141
uid = pwd.getpwnam(name).pw_uid
3142
gid = pwd.getpwnam(group).pw_gid
3143
break
1879
3144
except KeyError:
1880
try:
1881
uid = pwd.getpwnam("nobody").pw_uid
1882
gid = pwd.getpwnam("nobody").pw_gid
1883
except KeyError:
1884
uid = 65534
1885
gid = 65534
3145
continue
3146
else:
3147
uid = 65534
3148
gid = 65534
1886
3149
try:
1887
3150
os.setgid(gid)
1888
3151
os.setuid(uid)
3152
if debug:
3153
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3154
gid))
1889
3155
except OSError as error:
1890
if error[0] != errno.EPERM:
1891
raise error
1892
1893
if not debug and not debuglevel:
1894
syslogger.setLevel(logging.WARNING)
1895
console.setLevel(logging.WARNING)
1896
if debuglevel:
1897
level = getattr(logging, debuglevel.upper())
1898
syslogger.setLevel(level)
1899
console.setLevel(level)
1900
3156
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3157
.format(uid, gid, os.strerror(error.errno)))
3158
if error.errno != errno.EPERM:
3159
raise
3160
1901
3161
if debug:
1902
3162
# Enable all possible GnuTLS debugging
1903
3163
1904
3164
# "Use a log level over 10 to enable all debugging options."
1905
3165
# - GnuTLS manual
1906
gnutls.library.functions.gnutls_global_set_log_level(11)
1907
1908
@gnutls.library.types.gnutls_log_func
3166
gnutls.global_set_log_level(11)
3167
3168
@gnutls.log_func
1909
3169
def debug_gnutls(level, string):
1910
3170
logger.debug("GnuTLS: %s", string[:-1])
1911
1912
(gnutls.library.functions
1913
.gnutls_global_set_log_function(debug_gnutls))
1914
3171
3172
gnutls.global_set_log_function(debug_gnutls)
3173
1915
3174
# Redirect stdin so all checkers get /dev/null
1916
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3175
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1917
3176
os.dup2(null, sys.stdin.fileno())
1918
3177
if null > 2:
1919
3178
os.close(null)
1920
else:
1921
# No console logging
1922
logger.removeHandler(console)
1923
3179
1924
3180
# Need to fork before connecting to D-Bus
1925
if not debug:
3181
if not foreground:
1926
3182
# Close all input and output, do double fork, etc.
1927
3183
daemon()
1928
3184
3185
if gi.version_info < (3, 10, 2):
3186
# multiprocessing will use threads, so before we use GLib we
3187
# need to inform GLib that threads will be used.
3188
GLib.threads_init()
3189
1929
3190
global main_loop
1930
3191
# From the Avahi example code
1931
DBusGMainLoop(set_as_default=True )
1932
main_loop = gobject.MainLoop()
3192
DBusGMainLoop(set_as_default=True)
3193
main_loop = GLib.MainLoop()
1933
3194
bus = dbus.SystemBus()
1934
3195
# End of Avahi example code
1935
3196
if use_dbus:
1936
3197
try:
1937
3198
bus_name = dbus.service.BusName("se.recompile.Mandos",
1938
bus, do_not_queue=True)
1939
bus_name_transitional = dbus.service.BusName("se.bsnet.fukt.Mandos",
1940
bus, do_not_queue=True)
1941
except dbus.exceptions.NameExistsException as e:
1942
logger.error(unicode(e) + ", disabling D-Bus")
3199
bus,
3200
do_not_queue=True)
3201
old_bus_name = dbus.service.BusName(
3202
"se.bsnet.fukt.Mandos", bus,
3203
do_not_queue=True)
3204
except dbus.exceptions.DBusException as e:
3205
logger.error("Disabling D-Bus:", exc_info=e)
1943
3206
use_dbus = False
1944
3207
server_settings["use_dbus"] = False
1945
3208
tcp_server.use_dbus = False
1946
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1947
service = AvahiService(name = server_settings["servicename"],
1948
servicetype = "_mandos._tcp",
1949
protocol = protocol, bus = bus)
1950
if server_settings["interface"]:
1951
service.interface = (if_nametoindex
1952
(str(server_settings["interface"])))
1953
3209
if zeroconf:
3210
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3211
service = AvahiServiceToSyslog(
3212
name=server_settings["servicename"],
3213
servicetype="_mandos._tcp",
3214
protocol=protocol,
3215
bus=bus)
3216
if server_settings["interface"]:
3217
service.interface = if_nametoindex(
3218
server_settings["interface"].encode("utf-8"))
3219
1954
3220
global multiprocessing_manager
1955
3221
multiprocessing_manager = multiprocessing.Manager()
1956
3222
1957
3223
client_class = Client
1958
3224
if use_dbus:
1959
client_class = functools.partial(ClientDBusTransitional, bus = bus)
1960
def client_config_items(config, section):
1961
special_settings = {
1962
"approved_by_default":
1963
lambda: config.getboolean(section,
1964
"approved_by_default"),
1965
}
1966
for name, value in config.items(section):
3225
client_class = functools.partial(ClientDBus, bus=bus)
3226
3227
client_settings = Client.config_parser(client_config)
3228
old_client_settings = {}
3229
clients_data = {}
3230
3231
# This is used to redirect stdout and stderr for checker processes
3232
global wnull
3233
wnull = open(os.devnull, "w") # A writable /dev/null
3234
# Only used if server is running in foreground but not in debug
3235
# mode
3236
if debug or not foreground:
3237
wnull.close()
3238
3239
# Get client data and settings from last running state.
3240
if server_settings["restore"]:
3241
try:
3242
with open(stored_state_path, "rb") as stored_state:
3243
if sys.version_info.major == 2:
3244
clients_data, old_client_settings = pickle.load(
3245
stored_state)
3246
else:
3247
bytes_clients_data, bytes_old_client_settings = (
3248
pickle.load(stored_state, encoding="bytes"))
3249
# Fix bytes to strings
3250
# clients_data
3251
# .keys()
3252
clients_data = {(key.decode("utf-8")
3253
if isinstance(key, bytes)
3254
else key): value
3255
for key, value in
3256
bytes_clients_data.items()}
3257
del bytes_clients_data
3258
for key in clients_data:
3259
value = {(k.decode("utf-8")
3260
if isinstance(k, bytes) else k): v
3261
for k, v in
3262
clients_data[key].items()}
3263
clients_data[key] = value
3264
# .client_structure
3265
value["client_structure"] = [
3266
(s.decode("utf-8")
3267
if isinstance(s, bytes)
3268
else s) for s in
3269
value["client_structure"]]
3270
# .name, .host, and .checker_command
3271
for k in ("name", "host", "checker_command"):
3272
if isinstance(value[k], bytes):
3273
value[k] = value[k].decode("utf-8")
3274
if "key_id" not in value:
3275
value["key_id"] = ""
3276
elif "fingerprint" not in value:
3277
value["fingerprint"] = ""
3278
# old_client_settings
3279
# .keys()
3280
old_client_settings = {
3281
(key.decode("utf-8")
3282
if isinstance(key, bytes)
3283
else key): value
3284
for key, value in
3285
bytes_old_client_settings.items()}
3286
del bytes_old_client_settings
3287
# .host and .checker_command
3288
for value in old_client_settings.values():
3289
for attribute in ("host", "checker_command"):
3290
if isinstance(value[attribute], bytes):
3291
value[attribute] = (value[attribute]
3292
.decode("utf-8"))
3293
os.remove(stored_state_path)
3294
except IOError as e:
3295
if e.errno == errno.ENOENT:
3296
logger.warning("Could not load persistent state:"
3297
" {}".format(os.strerror(e.errno)))
3298
else:
3299
logger.critical("Could not load persistent state:",
3300
exc_info=e)
3301
raise
3302
except EOFError as e:
3303
logger.warning("Could not load persistent state: "
3304
"EOFError:",
3305
exc_info=e)
3306
3307
with PGPEngine() as pgp:
3308
for client_name, client in clients_data.items():
3309
# Skip removed clients
3310
if client_name not in client_settings:
3311
continue
3312
3313
# Decide which value to use after restoring saved state.
3314
# We have three different values: Old config file,
3315
# new config file, and saved state.
3316
# New config value takes precedence if it differs from old
3317
# config value, otherwise use saved state.
3318
for name, value in client_settings[client_name].items():
3319
try:
3320
# For each value in new config, check if it
3321
# differs from the old config value (Except for
3322
# the "secret" attribute)
3323
if (name != "secret"
3324
and (value !=
3325
old_client_settings[client_name][name])):
3326
client[name] = value
3327
except KeyError:
3328
pass
3329
3330
# Clients who has passed its expire date can still be
3331
# enabled if its last checker was successful. A Client
3332
# whose checker succeeded before we stored its state is
3333
# assumed to have successfully run all checkers during
3334
# downtime.
3335
if client["enabled"]:
3336
if datetime.datetime.utcnow() >= client["expires"]:
3337
if not client["last_checked_ok"]:
3338
logger.warning(
3339
"disabling client {} - Client never "
3340
"performed a successful checker".format(
3341
client_name))
3342
client["enabled"] = False
3343
elif client["last_checker_status"] != 0:
3344
logger.warning(
3345
"disabling client {} - Client last"
3346
" checker failed with error code"
3347
" {}".format(
3348
client_name,
3349
client["last_checker_status"]))
3350
client["enabled"] = False
3351
else:
3352
client["expires"] = (
3353
datetime.datetime.utcnow()
3354
+ client["timeout"])
3355
logger.debug("Last checker succeeded,"
3356
" keeping {} enabled".format(
3357
client_name))
1967
3358
try:
1968
yield (name, special_settings[name]())
1969
except KeyError:
1970
yield (name, value)
1971
1972
tcp_server.clients.update(set(
1973
client_class(name = section,
1974
config= dict(client_config_items(
1975
client_config, section)))
1976
for section in client_config.sections()))
3359
client["secret"] = pgp.decrypt(
3360
client["encrypted_secret"],
3361
client_settings[client_name]["secret"])
3362
except PGPError:
3363
# If decryption fails, we use secret from new settings
3364
logger.debug("Failed to decrypt {} old secret".format(
3365
client_name))
3366
client["secret"] = (client_settings[client_name]
3367
["secret"])
3368
3369
# Add/remove clients based on new changes made to config
3370
for client_name in (set(old_client_settings)
3371
- set(client_settings)):
3372
del clients_data[client_name]
3373
for client_name in (set(client_settings)
3374
- set(old_client_settings)):
3375
clients_data[client_name] = client_settings[client_name]
3376
3377
# Create all client objects
3378
for client_name, client in clients_data.items():
3379
tcp_server.clients[client_name] = client_class(
3380
name=client_name,
3381
settings=client,
3382
server_settings=server_settings)
3383
1977
3384
if not tcp_server.clients:
1978
3385
logger.warning("No clients defined")
1979
1980
if not debug:
1981
try:
1982
with pidfile:
1983
pid = os.getpid()
1984
pidfile.write(str(pid) + "\n".encode("utf-8"))
1985
del pidfile
1986
except IOError:
1987
logger.error("Could not write to file %r with PID %d",
1988
pidfilename, pid)
1989
except NameError:
1990
# "pidfile" was never created
1991
pass
3386
3387
if not foreground:
3388
if pidfile is not None:
3389
pid = os.getpid()
3390
try:
3391
with pidfile:
3392
print(pid, file=pidfile)
3393
except IOError:
3394
logger.error("Could not write to file %r with PID %d",
3395
pidfilename, pid)
3396
del pidfile
1992
3397
del pidfilename
1993
1994
signal.signal(signal.SIGINT, signal.SIG_IGN)
1995
1996
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1997
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1998
3398
3399
for termsig in (signal.SIGHUP, signal.SIGTERM):
3400
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3401
lambda: main_loop.quit() and False)
3402
1999
3403
if use_dbus:
2000
class MandosDBusService(dbus.service.Object):
3404
3405
@alternate_dbus_interfaces(
3406
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3407
class MandosDBusService(DBusObjectWithObjectManager):
2001
3408
"""A D-Bus proxy object"""
3409
2002
3410
def __init__(self):
2003
3411
dbus.service.Object.__init__(self, bus, "/")
2004
_interface = "se.bsnet.fukt.Mandos"
2005
3412
3413
_interface = "se.recompile.Mandos"
3414
2006
3415
@dbus.service.signal(_interface, signature="o")
2007
3416
def ClientAdded(self, objpath):
2008
3417
"D-Bus signal"
2009
3418
pass
2010
3419
2011
3420
@dbus.service.signal(_interface, signature="ss")
2012
def ClientNotFound(self, fingerprint, address):
3421
def ClientNotFound(self, key_id, address):
2013
3422
"D-Bus signal"
2014
3423
pass
2015
3424
3425
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3426
"true"})
2016
3427
@dbus.service.signal(_interface, signature="os")
2017
3428
def ClientRemoved(self, objpath, name):
2018
3429
"D-Bus signal"
2019
3430
pass
2020
3431
3432
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3433
"true"})
2021
3434
@dbus.service.method(_interface, out_signature="ao")
2022
3435
def GetAllClients(self):
2023
3436
"D-Bus method"
2024
return dbus.Array(c.dbus_object_path
2025
for c in tcp_server.clients)
2026
3437
return dbus.Array(c.dbus_object_path for c in
3438
tcp_server.clients.values())
3439
3440
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3441
"true"})
2027
3442
@dbus.service.method(_interface,
2028
3443
out_signature="a{oa{sv}}")
2029
3444
def GetAllClientsWithProperties(self):
2030
3445
"D-Bus method"
2031
3446
return dbus.Dictionary(
2032
((c.dbus_object_path, c.GetAll(""))
2033
for c in tcp_server.clients),
3447
{c.dbus_object_path: c.GetAll(
3448
"se.recompile.Mandos.Client")
3449
for c in tcp_server.clients.values()},
2034
3450
signature="oa{sv}")
2035
3451
2036
3452
@dbus.service.method(_interface, in_signature="o")
2037
3453
def RemoveClient(self, object_path):
2038
3454
"D-Bus method"
2039
for c in tcp_server.clients:
3455
for c in tcp_server.clients.values():
2040
3456
if c.dbus_object_path == object_path:
2041
tcp_server.clients.remove(c)
3457
del tcp_server.clients[c.name]
2042
3458
c.remove_from_connection()
2043
# Don't signal anything except ClientRemoved
3459
# Don't signal the disabling
2044
3460
c.disable(quiet=True)
2045
# Emit D-Bus signal
2046
self.ClientRemoved(object_path, c.name)
3461
# Emit D-Bus signal for removal
3462
self.client_removed_signal(c)
2047
3463
return
2048
3464
raise KeyError(object_path)
2049
3465
2050
3466
del _interface
2051
2052
class MandosDBusServiceTransitional(MandosDBusService):
2053
__metaclass__ = transitional_dbus_metaclass
2054
mandos_dbus_service = MandosDBusServiceTransitional()
2055
3467
3468
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3469
out_signature="a{oa{sa{sv}}}")
3470
def GetManagedObjects(self):
3471
"""D-Bus method"""
3472
return dbus.Dictionary(
3473
{client.dbus_object_path:
3474
dbus.Dictionary(
3475
{interface: client.GetAll(interface)
3476
for interface in
3477
client._get_all_interface_names()})
3478
for client in tcp_server.clients.values()})
3479
3480
def client_added_signal(self, client):
3481
"""Send the new standard signal and the old signal"""
3482
if use_dbus:
3483
# New standard signal
3484
self.InterfacesAdded(
3485
client.dbus_object_path,
3486
dbus.Dictionary(
3487
{interface: client.GetAll(interface)
3488
for interface in
3489
client._get_all_interface_names()}))
3490
# Old signal
3491
self.ClientAdded(client.dbus_object_path)
3492
3493
def client_removed_signal(self, client):
3494
"""Send the new standard signal and the old signal"""
3495
if use_dbus:
3496
# New standard signal
3497
self.InterfacesRemoved(
3498
client.dbus_object_path,
3499
client._get_all_interface_names())
3500
# Old signal
3501
self.ClientRemoved(client.dbus_object_path,
3502
client.name)
3503
3504
mandos_dbus_service = MandosDBusService()
3505
3506
# Save modules to variables to exempt the modules from being
3507
# unloaded before the function registered with atexit() is run.
3508
mp = multiprocessing
3509
wn = wnull
3510
2056
3511
def cleanup():
2057
3512
"Cleanup function; run on exit"
2058
service.cleanup()
2059
3513
if zeroconf:
3514
service.cleanup()
3515
3516
mp.active_children()
3517
wn.close()
3518
if not (tcp_server.clients or client_settings):
3519
return
3520
3521
# Store client before exiting. Secrets are encrypted with key
3522
# based on what config file has. If config file is
3523
# removed/edited, old secret will thus be unrecovable.
3524
clients = {}
3525
with PGPEngine() as pgp:
3526
for client in tcp_server.clients.values():
3527
key = client_settings[client.name]["secret"]
3528
client.encrypted_secret = pgp.encrypt(client.secret,
3529
key)
3530
client_dict = {}
3531
3532
# A list of attributes that can not be pickled
3533
# + secret.
3534
exclude = {"bus", "changedstate", "secret",
3535
"checker", "server_settings"}
3536
for name, typ in inspect.getmembers(dbus.service
3537
.Object):
3538
exclude.add(name)
3539
3540
client_dict["encrypted_secret"] = (client
3541
.encrypted_secret)
3542
for attr in client.client_structure:
3543
if attr not in exclude:
3544
client_dict[attr] = getattr(client, attr)
3545
3546
clients[client.name] = client_dict
3547
del client_settings[client.name]["secret"]
3548
3549
try:
3550
with tempfile.NamedTemporaryFile(
3551
mode='wb',
3552
suffix=".pickle",
3553
prefix='clients-',
3554
dir=os.path.dirname(stored_state_path),
3555
delete=False) as stored_state:
3556
pickle.dump((clients, client_settings), stored_state,
3557
protocol=2)
3558
tempname = stored_state.name
3559
os.rename(tempname, stored_state_path)
3560
except (IOError, OSError) as e:
3561
if not debug:
3562
try:
3563
os.remove(tempname)
3564
except NameError:
3565
pass
3566
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3567
logger.warning("Could not save persistent state: {}"
3568
.format(os.strerror(e.errno)))
3569
else:
3570
logger.warning("Could not save persistent state:",
3571
exc_info=e)
3572
raise
3573
3574
# Delete all clients, and settings from config
2060
3575
while tcp_server.clients:
2061
client = tcp_server.clients.pop()
3576
name, client = tcp_server.clients.popitem()
2062
3577
if use_dbus:
2063
3578
client.remove_from_connection()
2064
client.disable_hook = None
2065
# Don't signal anything except ClientRemoved
3579
# Don't signal the disabling
2066
3580
client.disable(quiet=True)
3581
# Emit D-Bus signal for removal
2067
3582
if use_dbus:
2068
# Emit D-Bus signal
2069
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2070
client.name)
2071
3583
mandos_dbus_service.client_removed_signal(client)
3584
client_settings.clear()
3585
2072
3586
atexit.register(cleanup)
2073
2074
for client in tcp_server.clients:
3587
3588
for client in tcp_server.clients.values():
2075
3589
if use_dbus:
2076
# Emit D-Bus signal
2077
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2078
client.enable()
2079
3590
# Emit D-Bus signal for adding
3591
mandos_dbus_service.client_added_signal(client)
3592
# Need to initiate checking of clients
3593
if client.enabled:
3594
client.init_checker()
3595
2080
3596
tcp_server.enable()
2081
3597
tcp_server.server_activate()
2082
3598
2083
3599
# Find out what port we got
2084
service.port = tcp_server.socket.getsockname()[1]
3600
if zeroconf:
3601
service.port = tcp_server.socket.getsockname()[1]
2085
3602
if use_ipv6:
2086
3603
logger.info("Now listening on address %r, port %d,"
2087
" flowinfo %d, scope_id %d"
2088
% tcp_server.socket.getsockname())
3604
" flowinfo %d, scope_id %d",
3605
*tcp_server.socket.getsockname())
2089
3606
else: # IPv4
2090
logger.info("Now listening on address %r, port %d"
2091
% tcp_server.socket.getsockname())
2092
2093
#service.interface = tcp_server.socket.getsockname()[3]
2094
3607
logger.info("Now listening on address %r, port %d",
3608
*tcp_server.socket.getsockname())
3609
3610
# service.interface = tcp_server.socket.getsockname()[3]
3611
2095
3612
try:
2096
# From the Avahi example code
2097
try:
2098
service.activate()
2099
except dbus.exceptions.DBusException as error:
2100
logger.critical("DBusException: %s", error)
2101
cleanup()
2102
sys.exit(1)
2103
# End of Avahi example code
2104
2105
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2106
lambda *args, **kwargs:
2107
(tcp_server.handle_request
2108
(*args[2:], **kwargs) or True))
2109
3613
if zeroconf:
3614
# From the Avahi example code
3615
try:
3616
service.activate()
3617
except dbus.exceptions.DBusException as error:
3618
logger.critical("D-Bus Exception", exc_info=error)
3619
cleanup()
3620
sys.exit(1)
3621
# End of Avahi example code
3622
3623
GLib.io_add_watch(
3624
GLib.IOChannel.unix_new(tcp_server.fileno()),
3625
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3626
lambda *args, **kwargs: (tcp_server.handle_request
3627
(*args[2:], **kwargs) or True))
3628
2110
3629
logger.debug("Starting main loop")
2111
3630
main_loop.run()
2112
3631
except AvahiError as error:
2113
logger.critical("AvahiError: %s", error)
3632
logger.critical("Avahi Error", exc_info=error)
2114
3633
cleanup()
2115
3634
sys.exit(1)
2116
3635
except KeyboardInterrupt:
2121
3640
# Must run before the D-Bus bus name gets deregistered
2122
3641
cleanup()
2123
3642
3643
3644
def should_only_run_tests():
3645
parser = argparse.ArgumentParser(add_help=False)
3646
parser.add_argument("--check", action='store_true')
3647
args, unknown_args = parser.parse_known_args()
3648
run_tests = args.check
3649
if run_tests:
3650
# Remove --check argument from sys.argv
3651
sys.argv[1:] = unknown_args
3652
return run_tests
3653
3654
# Add all tests from doctest strings
3655
def load_tests(loader, tests, none):
3656
import doctest
3657
tests.addTests(doctest.DocTestSuite())
3658
return tests
2124
3659
2125
3660
if __name__ == '__main__':
2126
main()
3661
try:
3662
if should_only_run_tests():
3663
# Call using ./mandos --check [--verbose]
3664
unittest.main()
3665
else:
3666
main()
3667
finally:
3668
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0