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- Committer: teddy at recompile
- Date: 2011-12-27 14:15:40 UTC
- Revision ID: teddy@recompile.se-20111227141540-ajrabf33q59jfa7t
Reorder TODO entries
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
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
#
1
#!/usr/bin/python
2
# -*- mode: python; 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 © 2008-2020 Teddy Hogeborn
15
# Copyright © 2008-2020 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
37
import SocketServer as socketserver
47
38
import socket
48
39
import argparse
49
40
import datetime
50
41
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
55
49
import sys
56
50
import re
57
51
import os
66
60
import struct
67
61
import fcntl
68
62
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
import cPickle as pickle
73
64
import multiprocessing
74
65
import types
75
66
import binascii
76
67
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
import random
82
import shlex
83
68
84
69
import dbus
85
70
import dbus.service
86
import gi
87
from gi.repository import GLib
71
import gobject
72
import avahi
88
73
from dbus.mainloop.glib import DBusGMainLoop
89
74
import ctypes
90
75
import ctypes.util
91
76
import xml.dom.minidom
92
77
import inspect
93
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
import GnuPGInterface
79
80
try:
122
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
123
82
except AttributeError:
124
83
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
127
84
from IN import SO_BINDTODEVICE
128
85
except ImportError:
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 = "1.8.13"
86
SO_BINDTODEVICE = None
87
88
version = "1.4.1"
147
89
stored_state_file = "clients.pickle"
148
90
149
91
logger = logging.getLogger()
150
logging.captureWarnings(True) # Show warnings via the logging system
151
syslogger = None
92
syslogger = (logging.handlers.SysLogHandler
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
152
95
153
96
try:
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
156
100
except (OSError, AttributeError):
157
158
101
def if_nametoindex(interface):
159
102
"Get an interface index the hard way, i.e. using fcntl()"
160
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
161
104
with contextlib.closing(socket.socket()) as s:
162
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
165
110
return interface_index
166
111
167
112
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
113
def initlogger(debug, level=logging.WARNING):
185
114
"""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"))
115
191
116
syslogger.setFormatter(logging.Formatter
192
117
('Mandos [%(process)d]: %(levelname)s:'
193
118
' %(message)s'))
194
119
logger.addHandler(syslogger)
195
120
196
121
if debug:
197
122
console = logging.StreamHandler()
198
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
208
133
pass
209
134
210
135
211
class PGPEngine:
136
class PGPEngine(object):
212
137
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
214
138
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
215
140
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
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet'])
146
235
147
def __enter__(self):
236
148
return self
237
238
def __exit__(self, exc_type, exc_value, traceback):
149
150
def __exit__ (self, exc_type, exc_value, traceback):
239
151
self._cleanup()
240
152
return False
241
153
242
154
def __del__(self):
243
155
self._cleanup()
244
156
245
157
def _cleanup(self):
246
158
if self.tempdir is not None:
247
159
# Delete contents of tempdir
248
160
for root, dirs, files in os.walk(self.tempdir,
249
topdown=False):
161
topdown = False):
250
162
for filename in files:
251
163
os.remove(os.path.join(root, filename))
252
164
for dirname in dirs:
254
166
# Remove tempdir
255
167
os.rmdir(self.tempdir)
256
168
self.tempdir = None
257
169
258
170
def password_encode(self, password):
259
171
# Passphrase can not be empty and can not contain newlines or
260
172
# 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
173
return b"mandos" + binascii.hexlify(password)
174
269
175
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)
176
self.gnupg.passphrase = self.password_encode(password)
177
with open(os.devnull) as devnull:
178
try:
179
proc = self.gnupg.run(['--symmetric'],
180
create_fhs=['stdin', 'stdout'],
181
attach_fhs={'stderr': devnull})
182
with contextlib.closing(proc.handles['stdin']) as f:
183
f.write(data)
184
with contextlib.closing(proc.handles['stdout']) as f:
185
ciphertext = f.read()
186
proc.wait()
187
except IOError as e:
188
raise PGPError(e)
189
self.gnupg.passphrase = None
285
190
return ciphertext
286
191
287
192
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)
193
self.gnupg.passphrase = self.password_encode(password)
194
with open(os.devnull) as devnull:
195
try:
196
proc = self.gnupg.run(['--decrypt'],
197
create_fhs=['stdin', 'stdout'],
198
attach_fhs={'stderr': devnull})
199
with contextlib.closing(proc.handles['stdin'] ) as f:
200
f.write(data)
201
with contextlib.closing(proc.handles['stdout']) as f:
202
decrypted_plaintext = f.read()
203
proc.wait()
204
except IOError as e:
205
raise PGPError(e)
206
self.gnupg.passphrase = None
303
207
return decrypted_plaintext
304
208
305
209
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
331
210
332
211
class AvahiError(Exception):
333
212
def __init__(self, value, *args, **kwargs):
334
213
self.value = value
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
214
super(AvahiError, self).__init__(value, *args, **kwargs)
215
def __unicode__(self):
216
return unicode(repr(self.value))
338
217
339
218
class AvahiServiceError(AvahiError):
340
219
pass
341
220
342
343
221
class AvahiGroupError(AvahiError):
344
222
pass
345
223
346
224
347
class AvahiService:
225
class AvahiService(object):
348
226
"""An Avahi (Zeroconf) service.
349
227
350
228
Attributes:
351
229
interface: integer; avahi.IF_UNSPEC or an interface index.
352
230
Used to optionally bind to the specified interface.
353
231
name: string; Example: 'Mandos'
354
232
type: string; Example: '_mandos._tcp'.
355
See <https://www.iana.org/assignments/service-names-port-numbers>
233
See <http://www.dns-sd.org/ServiceTypes.html>
356
234
port: integer; what port to announce
357
235
TXT: list of strings; TXT record for the service
358
236
domain: string; Domain to publish on, default to .local if empty.
364
242
server: D-Bus Server
365
243
bus: dbus.SystemBus()
366
244
"""
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):
245
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
246
servicetype = None, port = None, TXT = None,
247
domain = "", host = "", max_renames = 32768,
248
protocol = avahi.PROTO_UNSPEC, bus = None):
379
249
self.interface = interface
380
250
self.name = name
381
251
self.type = servicetype
390
260
self.server = None
391
261
self.bus = bus
392
262
self.entry_group_state_changed_match = None
393
394
def rename(self, remove=True):
263
def rename(self):
395
264
"""Derived from the Avahi example code"""
396
265
if self.rename_count >= self.max_renames:
397
266
logger.critical("No suitable Zeroconf service name found"
398
267
" after %i retries, exiting.",
399
268
self.rename_count)
400
269
raise AvahiServiceError("Too many renames")
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
403
self.rename_count += 1
270
self.name = unicode(self.server
271
.GetAlternativeServiceName(self.name))
404
272
logger.info("Changing Zeroconf service name to %r ...",
405
273
self.name)
406
if remove:
407
self.remove()
274
self.remove()
408
275
try:
409
276
self.add()
410
277
except dbus.exceptions.DBusException as error:
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
278
logger.critical("DBusException: %s", error)
279
self.cleanup()
280
os._exit(1)
281
self.rename_count += 1
420
282
def remove(self):
421
283
"""Derived from the Avahi example code"""
422
284
if self.entry_group_state_changed_match is not None:
424
286
self.entry_group_state_changed_match = None
425
287
if self.group is not None:
426
288
self.group.Reset()
427
428
289
def add(self):
429
290
"""Derived from the Avahi example code"""
430
291
self.remove()
447
308
dbus.UInt16(self.port),
448
309
avahi.string_array_to_txt_array(self.TXT))
449
310
self.group.Commit()
450
451
311
def entry_group_state_changed(self, state, error):
452
312
"""Derived from the Avahi example code"""
453
313
logger.debug("Avahi entry group state change: %i", state)
454
314
455
315
if state == avahi.ENTRY_GROUP_ESTABLISHED:
456
316
logger.debug("Zeroconf service established.")
457
317
elif state == avahi.ENTRY_GROUP_COLLISION:
459
319
self.rename()
460
320
elif state == avahi.ENTRY_GROUP_FAILURE:
461
321
logger.critical("Avahi: Error in group state changed %s",
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
322
unicode(error))
323
raise AvahiGroupError("State changed: %s"
324
% unicode(error))
465
325
def cleanup(self):
466
326
"""Derived from the Avahi example code"""
467
327
if self.group is not None:
472
332
pass
473
333
self.group = None
474
334
self.remove()
475
476
335
def server_state_changed(self, state, error=None):
477
336
"""Derived from the Avahi example code"""
478
337
logger.debug("Avahi server state change: %i", state)
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
}
338
bad_states = { avahi.SERVER_INVALID:
339
"Zeroconf server invalid",
340
avahi.SERVER_REGISTERING: None,
341
avahi.SERVER_COLLISION:
342
"Zeroconf server name collision",
343
avahi.SERVER_FAILURE:
344
"Zeroconf server failure" }
485
345
if state in bad_states:
486
346
if bad_states[state] is not None:
487
347
if error is None:
490
350
logger.error(bad_states[state] + ": %r", error)
491
351
self.cleanup()
492
352
elif state == avahi.SERVER_RUNNING:
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)
353
self.add()
505
354
else:
506
355
if error is None:
507
356
logger.debug("Unknown state: %r", state)
508
357
else:
509
358
logger.debug("Unknown state: %r: %r", state, error)
510
511
359
def activate(self):
512
360
"""Derived from the Avahi example code"""
513
361
if self.server is None:
517
365
follow_name_owner_changes=True),
518
366
avahi.DBUS_INTERFACE_SERVER)
519
367
self.server.connect_to_signal("StateChanged",
520
self.server_state_changed)
368
self.server_state_changed)
521
369
self.server_state_changed(self.server.GetState())
522
370
523
524
371
class AvahiServiceToSyslog(AvahiService):
525
def rename(self, *args, **kwargs):
372
def rename(self):
526
373
"""Add the new name to the syslog messages"""
527
ret = super(AvahiServiceToSyslog, self).rename(*args,
528
**kwargs)
529
syslogger.setFormatter(logging.Formatter(
530
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
531
.format(self.name)))
374
ret = AvahiService.rename(self)
375
syslogger.setFormatter(logging.Formatter
376
('Mandos (%s) [%%(process)d]:'
377
' %%(levelname)s: %%(message)s'
378
% self.name))
532
379
return ret
533
380
534
535
# Pretend that we have a GnuTLS module
536
class gnutls:
537
"""This isn't so much a class as it is a module-like namespace."""
538
539
library = ctypes.util.find_library("gnutls")
540
if library is None:
541
library = ctypes.util.find_library("gnutls-deb0")
542
_library = ctypes.cdll.LoadLibrary(library)
543
del library
544
545
# Unless otherwise indicated, the constants and types below are
546
# all from the gnutls/gnutls.h C header file.
547
548
# Constants
549
E_SUCCESS = 0
550
E_INTERRUPTED = -52
551
E_AGAIN = -28
552
CRT_OPENPGP = 2
553
CRT_RAWPK = 3
554
CLIENT = 2
555
SHUT_RDWR = 0
556
CRD_CERTIFICATE = 1
557
E_NO_CERTIFICATE_FOUND = -49
558
X509_FMT_DER = 0
559
NO_TICKETS = 1<<10
560
ENABLE_RAWPK = 1<<18
561
CTYPE_PEERS = 3
562
KEYID_USE_SHA256 = 1 # gnutls/x509.h
563
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
564
565
# Types
566
class session_int(ctypes.Structure):
567
_fields_ = []
568
session_t = ctypes.POINTER(session_int)
569
570
class certificate_credentials_st(ctypes.Structure):
571
_fields_ = []
572
certificate_credentials_t = ctypes.POINTER(
573
certificate_credentials_st)
574
certificate_type_t = ctypes.c_int
575
576
class datum_t(ctypes.Structure):
577
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
578
('size', ctypes.c_uint)]
579
580
class openpgp_crt_int(ctypes.Structure):
581
_fields_ = []
582
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
583
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
584
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
585
credentials_type_t = ctypes.c_int
586
transport_ptr_t = ctypes.c_void_p
587
close_request_t = ctypes.c_int
588
589
# Exceptions
590
class Error(Exception):
591
def __init__(self, message=None, code=None, args=()):
592
# Default usage is by a message string, but if a return
593
# code is passed, convert it to a string with
594
# gnutls.strerror()
595
self.code = code
596
if message is None and code is not None:
597
message = gnutls.strerror(code)
598
return super(gnutls.Error, self).__init__(
599
message, *args)
600
601
class CertificateSecurityError(Error):
602
pass
603
604
# Classes
605
class Credentials:
606
def __init__(self):
607
self._c_object = gnutls.certificate_credentials_t()
608
gnutls.certificate_allocate_credentials(
609
ctypes.byref(self._c_object))
610
self.type = gnutls.CRD_CERTIFICATE
611
612
def __del__(self):
613
gnutls.certificate_free_credentials(self._c_object)
614
615
class ClientSession:
616
def __init__(self, socket, credentials=None):
617
self._c_object = gnutls.session_t()
618
gnutls_flags = gnutls.CLIENT
619
if gnutls.check_version(b"3.5.6"):
620
gnutls_flags |= gnutls.NO_TICKETS
621
if gnutls.has_rawpk:
622
gnutls_flags |= gnutls.ENABLE_RAWPK
623
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
624
del gnutls_flags
625
gnutls.set_default_priority(self._c_object)
626
gnutls.transport_set_ptr(self._c_object, socket.fileno())
627
gnutls.handshake_set_private_extensions(self._c_object,
628
True)
629
self.socket = socket
630
if credentials is None:
631
credentials = gnutls.Credentials()
632
gnutls.credentials_set(self._c_object, credentials.type,
633
ctypes.cast(credentials._c_object,
634
ctypes.c_void_p))
635
self.credentials = credentials
636
637
def __del__(self):
638
gnutls.deinit(self._c_object)
639
640
def handshake(self):
641
return gnutls.handshake(self._c_object)
642
643
def send(self, data):
644
data = bytes(data)
645
data_len = len(data)
646
while data_len > 0:
647
data_len -= gnutls.record_send(self._c_object,
648
data[-data_len:],
649
data_len)
650
651
def bye(self):
652
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
653
654
# Error handling functions
655
def _error_code(result):
656
"""A function to raise exceptions on errors, suitable
657
for the 'restype' attribute on ctypes functions"""
658
if result >= 0:
659
return result
660
if result == gnutls.E_NO_CERTIFICATE_FOUND:
661
raise gnutls.CertificateSecurityError(code=result)
662
raise gnutls.Error(code=result)
663
664
def _retry_on_error(result, func, arguments):
665
"""A function to retry on some errors, suitable
666
for the 'errcheck' attribute on ctypes functions"""
667
while result < 0:
668
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
669
return _error_code(result)
670
result = func(*arguments)
671
return result
672
673
# Unless otherwise indicated, the function declarations below are
674
# all from the gnutls/gnutls.h C header file.
675
676
# Functions
677
priority_set_direct = _library.gnutls_priority_set_direct
678
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
679
ctypes.POINTER(ctypes.c_char_p)]
680
priority_set_direct.restype = _error_code
681
682
init = _library.gnutls_init
683
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
684
init.restype = _error_code
685
686
set_default_priority = _library.gnutls_set_default_priority
687
set_default_priority.argtypes = [session_t]
688
set_default_priority.restype = _error_code
689
690
record_send = _library.gnutls_record_send
691
record_send.argtypes = [session_t, ctypes.c_void_p,
692
ctypes.c_size_t]
693
record_send.restype = ctypes.c_ssize_t
694
record_send.errcheck = _retry_on_error
695
696
certificate_allocate_credentials = (
697
_library.gnutls_certificate_allocate_credentials)
698
certificate_allocate_credentials.argtypes = [
699
ctypes.POINTER(certificate_credentials_t)]
700
certificate_allocate_credentials.restype = _error_code
701
702
certificate_free_credentials = (
703
_library.gnutls_certificate_free_credentials)
704
certificate_free_credentials.argtypes = [
705
certificate_credentials_t]
706
certificate_free_credentials.restype = None
707
708
handshake_set_private_extensions = (
709
_library.gnutls_handshake_set_private_extensions)
710
handshake_set_private_extensions.argtypes = [session_t,
711
ctypes.c_int]
712
handshake_set_private_extensions.restype = None
713
714
credentials_set = _library.gnutls_credentials_set
715
credentials_set.argtypes = [session_t, credentials_type_t,
716
ctypes.c_void_p]
717
credentials_set.restype = _error_code
718
719
strerror = _library.gnutls_strerror
720
strerror.argtypes = [ctypes.c_int]
721
strerror.restype = ctypes.c_char_p
722
723
certificate_type_get = _library.gnutls_certificate_type_get
724
certificate_type_get.argtypes = [session_t]
725
certificate_type_get.restype = _error_code
726
727
certificate_get_peers = _library.gnutls_certificate_get_peers
728
certificate_get_peers.argtypes = [session_t,
729
ctypes.POINTER(ctypes.c_uint)]
730
certificate_get_peers.restype = ctypes.POINTER(datum_t)
731
732
global_set_log_level = _library.gnutls_global_set_log_level
733
global_set_log_level.argtypes = [ctypes.c_int]
734
global_set_log_level.restype = None
735
736
global_set_log_function = _library.gnutls_global_set_log_function
737
global_set_log_function.argtypes = [log_func]
738
global_set_log_function.restype = None
739
740
deinit = _library.gnutls_deinit
741
deinit.argtypes = [session_t]
742
deinit.restype = None
743
744
handshake = _library.gnutls_handshake
745
handshake.argtypes = [session_t]
746
handshake.restype = _error_code
747
handshake.errcheck = _retry_on_error
748
749
transport_set_ptr = _library.gnutls_transport_set_ptr
750
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
751
transport_set_ptr.restype = None
752
753
bye = _library.gnutls_bye
754
bye.argtypes = [session_t, close_request_t]
755
bye.restype = _error_code
756
bye.errcheck = _retry_on_error
757
758
check_version = _library.gnutls_check_version
759
check_version.argtypes = [ctypes.c_char_p]
760
check_version.restype = ctypes.c_char_p
761
762
_need_version = b"3.3.0"
763
if check_version(_need_version) is None:
764
raise self.Error("Needs GnuTLS {} or later"
765
.format(_need_version))
766
767
_tls_rawpk_version = b"3.6.6"
768
has_rawpk = bool(check_version(_tls_rawpk_version))
769
770
if has_rawpk:
771
# Types
772
class pubkey_st(ctypes.Structure):
773
_fields = []
774
pubkey_t = ctypes.POINTER(pubkey_st)
775
776
x509_crt_fmt_t = ctypes.c_int
777
778
# All the function declarations below are from
779
# gnutls/abstract.h
780
pubkey_init = _library.gnutls_pubkey_init
781
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
782
pubkey_init.restype = _error_code
783
784
pubkey_import = _library.gnutls_pubkey_import
785
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
786
x509_crt_fmt_t]
787
pubkey_import.restype = _error_code
788
789
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
790
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
791
ctypes.POINTER(ctypes.c_ubyte),
792
ctypes.POINTER(ctypes.c_size_t)]
793
pubkey_get_key_id.restype = _error_code
794
795
pubkey_deinit = _library.gnutls_pubkey_deinit
796
pubkey_deinit.argtypes = [pubkey_t]
797
pubkey_deinit.restype = None
798
else:
799
# All the function declarations below are from
800
# gnutls/openpgp.h
801
802
openpgp_crt_init = _library.gnutls_openpgp_crt_init
803
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
804
openpgp_crt_init.restype = _error_code
805
806
openpgp_crt_import = _library.gnutls_openpgp_crt_import
807
openpgp_crt_import.argtypes = [openpgp_crt_t,
808
ctypes.POINTER(datum_t),
809
openpgp_crt_fmt_t]
810
openpgp_crt_import.restype = _error_code
811
812
openpgp_crt_verify_self = \
813
_library.gnutls_openpgp_crt_verify_self
814
openpgp_crt_verify_self.argtypes = [
815
openpgp_crt_t,
816
ctypes.c_uint,
817
ctypes.POINTER(ctypes.c_uint),
818
]
819
openpgp_crt_verify_self.restype = _error_code
820
821
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
822
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
823
openpgp_crt_deinit.restype = None
824
825
openpgp_crt_get_fingerprint = (
826
_library.gnutls_openpgp_crt_get_fingerprint)
827
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
828
ctypes.c_void_p,
829
ctypes.POINTER(
830
ctypes.c_size_t)]
831
openpgp_crt_get_fingerprint.restype = _error_code
832
833
if check_version(b"3.6.4"):
834
certificate_type_get2 = _library.gnutls_certificate_type_get2
835
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
836
certificate_type_get2.restype = _error_code
837
838
# Remove non-public functions
839
del _error_code, _retry_on_error
840
841
842
def call_pipe(connection, # : multiprocessing.Connection
843
func, *args, **kwargs):
844
"""This function is meant to be called by multiprocessing.Process
845
846
This function runs func(*args, **kwargs), and writes the resulting
847
return value on the provided multiprocessing.Connection.
848
"""
849
connection.send(func(*args, **kwargs))
850
connection.close()
851
852
853
class Client:
381
def timedelta_to_milliseconds(td):
382
"Convert a datetime.timedelta() to milliseconds"
383
return ((td.days * 24 * 60 * 60 * 1000)
384
+ (td.seconds * 1000)
385
+ (td.microseconds // 1000))
386
387
class Client(object):
854
388
"""A representation of a client host served by this server.
855
389
856
390
Attributes:
857
391
approved: bool(); 'None' if not yet approved/disapproved
858
392
approval_delay: datetime.timedelta(); Time to wait for approval
859
393
approval_duration: datetime.timedelta(); Duration of one approval
860
checker: multiprocessing.Process(); a running checker process used
861
to see if the client lives. 'None' if no process is
862
running.
863
checker_callback_tag: a GLib event source tag, or None
394
checker: subprocess.Popen(); a running checker process used
395
to see if the client lives.
396
'None' if no process is running.
397
checker_callback_tag: a gobject event source tag, or None
864
398
checker_command: string; External command which is run to check
865
399
if client lives. %() expansions are done at
866
400
runtime with vars(self) as dict, so that for
867
401
instance %(name)s can be used in the command.
868
checker_initiator_tag: a GLib event source tag, or None
402
checker_initiator_tag: a gobject event source tag, or None
869
403
created: datetime.datetime(); (UTC) object creation
870
404
client_structure: Object describing what attributes a client has
871
405
and is used for storing the client at exit
872
406
current_checker_command: string; current running checker_command
873
disable_initiator_tag: a GLib event source tag, or None
407
disable_initiator_tag: a gobject event source tag, or None
874
408
enabled: bool()
875
409
fingerprint: string (40 or 32 hexadecimal digits); used to
876
uniquely identify an OpenPGP client
877
key_id: string (64 hexadecimal digits); used to uniquely identify
878
a client using raw public keys
410
uniquely identify the client
879
411
host: string; available for use by the checker command
880
412
interval: datetime.timedelta(); How often to start a new checker
881
413
last_approval_request: datetime.datetime(); (UTC) or None
882
414
last_checked_ok: datetime.datetime(); (UTC) or None
883
415
last_checker_status: integer between 0 and 255 reflecting exit
884
416
status of last checker. -1 reflects crashed
885
checker, -2 means no checker completed yet.
886
last_checker_signal: The signal which killed the last checker, if
887
last_checker_status is -1
417
checker, or None.
888
418
last_enabled: datetime.datetime(); (UTC) or None
889
419
name: string; from the config file, used in log messages and
890
420
D-Bus identifiers
891
421
secret: bytestring; sent verbatim (over TLS) to client
892
422
timeout: datetime.timedelta(); How long from last_checked_ok
893
423
until this client is disabled
894
extended_timeout: extra long timeout when secret has been sent
424
extended_timeout: extra long timeout when password has been sent
895
425
runtime_expansions: Allowed attributes for runtime expansion.
896
426
expires: datetime.datetime(); time (UTC) when a client will be
897
427
disabled, or None
898
server_settings: The server_settings dict from main()
899
428
"""
900
429
901
430
runtime_expansions = ("approval_delay", "approval_duration",
902
"created", "enabled", "expires", "key_id",
903
"fingerprint", "host", "interval",
904
"last_approval_request", "last_checked_ok",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
905
433
"last_enabled", "name", "timeout")
906
client_defaults = {
907
"timeout": "PT5M",
908
"extended_timeout": "PT15M",
909
"interval": "PT2M",
910
"checker": "fping -q -- %%(host)s",
911
"host": "",
912
"approval_delay": "PT0S",
913
"approval_duration": "PT1S",
914
"approved_by_default": "True",
915
"enabled": "True",
916
}
434
client_defaults = { "timeout": "5m",
435
"extended_timeout": "15m",
436
"interval": "2m",
437
"checker": "fping -q -- %%(host)s",
438
"host": "",
439
"approval_delay": "0s",
440
"approval_duration": "1s",
441
"approved_by_default": "True",
442
"enabled": "True",
443
}
444
445
def timeout_milliseconds(self):
446
"Return the 'timeout' attribute in milliseconds"
447
return timedelta_to_milliseconds(self.timeout)
448
449
def extended_timeout_milliseconds(self):
450
"Return the 'extended_timeout' attribute in milliseconds"
451
return timedelta_to_milliseconds(self.extended_timeout)
452
453
def interval_milliseconds(self):
454
"Return the 'interval' attribute in milliseconds"
455
return timedelta_to_milliseconds(self.interval)
456
457
def approval_delay_milliseconds(self):
458
return timedelta_to_milliseconds(self.approval_delay)
917
459
918
460
@staticmethod
919
461
def config_parser(config):
920
"""Construct a new dict of client settings of this form:
462
""" Construct a new dict of client settings of this form:
921
463
{ client_name: {setting_name: value, ...}, ...}
922
with exceptions for any special settings as defined above.
923
NOTE: Must be a pure function. Must return the same result
924
value given the same arguments.
925
"""
464
with exceptions for any special settings as defined above"""
926
465
settings = {}
927
466
for client_name in config.sections():
928
467
section = dict(config.items(client_name))
929
468
client = settings[client_name] = {}
930
469
931
470
client["host"] = section["host"]
932
471
# Reformat values from string types to Python types
933
472
client["approved_by_default"] = config.getboolean(
934
473
client_name, "approved_by_default")
935
client["enabled"] = config.getboolean(client_name,
936
"enabled")
937
938
# Uppercase and remove spaces from key_id and fingerprint
939
# for later comparison purposes with return value from the
940
# key_id() and fingerprint() functions
941
client["key_id"] = (section.get("key_id", "").upper()
942
.replace(" ", ""))
474
client["enabled"] = config.getboolean(client_name, "enabled")
475
943
476
client["fingerprint"] = (section["fingerprint"].upper()
944
477
.replace(" ", ""))
945
478
if "secret" in section:
946
client["secret"] = codecs.decode(section["secret"]
947
.encode("utf-8"),
948
"base64")
479
client["secret"] = section["secret"].decode("base64")
949
480
elif "secfile" in section:
950
481
with open(os.path.expanduser(os.path.expandvars
951
482
(section["secfile"])),
952
483
"rb") as secfile:
953
484
client["secret"] = secfile.read()
954
485
else:
955
raise TypeError("No secret or secfile for section {}"
956
.format(section))
486
raise TypeError("No secret or secfile for section %s"
487
% section)
957
488
client["timeout"] = string_to_delta(section["timeout"])
958
489
client["extended_timeout"] = string_to_delta(
959
490
section["extended_timeout"])
965
496
client["checker_command"] = section["checker"]
966
497
client["last_approval_request"] = None
967
498
client["last_checked_ok"] = None
968
client["last_checker_status"] = -2
499
client["last_checker_status"] = None
500
if client["enabled"]:
501
client["last_enabled"] = datetime.datetime.utcnow()
502
client["expires"] = (datetime.datetime.utcnow()
503
+ client["timeout"])
504
else:
505
client["last_enabled"] = None
506
client["expires"] = None
969
507
970
508
return settings
971
972
def __init__(self, settings, name=None, server_settings=None):
509
510
511
def __init__(self, settings, name = None):
512
"""Note: the 'checker' key in 'config' sets the
513
'checker_command' attribute and *not* the 'checker'
514
attribute."""
973
515
self.name = name
974
if server_settings is None:
975
server_settings = {}
976
self.server_settings = server_settings
977
516
# adding all client settings
978
for setting, value in settings.items():
517
for setting, value in settings.iteritems():
979
518
setattr(self, setting, value)
980
981
if self.enabled:
982
if not hasattr(self, "last_enabled"):
983
self.last_enabled = datetime.datetime.utcnow()
984
if not hasattr(self, "expires"):
985
self.expires = (datetime.datetime.utcnow()
986
+ self.timeout)
987
else:
988
self.last_enabled = None
989
self.expires = None
990
519
991
520
logger.debug("Creating client %r", self.name)
992
logger.debug(" Key ID: %s", self.key_id)
521
# Uppercase and remove spaces from fingerprint for later
522
# comparison purposes with return value from the fingerprint()
523
# function
993
524
logger.debug(" Fingerprint: %s", self.fingerprint)
994
self.created = settings.get("created",
995
datetime.datetime.utcnow())
525
self.created = settings.get("created", datetime.datetime.utcnow())
996
526
997
527
# attributes specific for this server instance
998
528
self.checker = None
1002
532
self.current_checker_command = None
1003
533
self.approved = None
1004
534
self.approvals_pending = 0
1005
self.changedstate = multiprocessing_manager.Condition(
1006
multiprocessing_manager.Lock())
1007
self.client_structure = [attr
1008
for attr in self.__dict__.keys()
535
self.changedstate = (multiprocessing_manager
536
.Condition(multiprocessing_manager
537
.Lock()))
538
self.client_structure = [attr for attr in
539
self.__dict__.iterkeys()
1009
540
if not attr.startswith("_")]
1010
541
self.client_structure.append("client_structure")
1011
1012
for name, t in inspect.getmembers(
1013
type(self), lambda obj: isinstance(obj, property)):
542
543
for name, t in inspect.getmembers(type(self),
544
lambda obj:
545
isinstance(obj,
546
property)):
1014
547
if not name.startswith("_"):
1015
548
self.client_structure.append(name)
1016
549
1017
550
# Send notice to process children that client state has changed
1018
551
def send_changedstate(self):
1019
552
with self.changedstate:
1020
553
self.changedstate.notify_all()
1021
554
1022
555
def enable(self):
1023
556
"""Start this client's checker and timeout hooks"""
1024
557
if getattr(self, "enabled", False):
1025
558
# Already enabled
1026
559
return
560
self.send_changedstate()
1027
561
self.expires = datetime.datetime.utcnow() + self.timeout
1028
562
self.enabled = True
1029
563
self.last_enabled = datetime.datetime.utcnow()
1030
564
self.init_checker()
1031
self.send_changedstate()
1032
565
1033
566
def disable(self, quiet=True):
1034
567
"""Disable this client."""
1035
568
if not getattr(self, "enabled", False):
1036
569
return False
1037
570
if not quiet:
571
self.send_changedstate()
572
if not quiet:
1038
573
logger.info("Disabling client %s", self.name)
1039
if getattr(self, "disable_initiator_tag", None) is not None:
1040
GLib.source_remove(self.disable_initiator_tag)
574
if getattr(self, "disable_initiator_tag", False):
575
gobject.source_remove(self.disable_initiator_tag)
1041
576
self.disable_initiator_tag = None
1042
577
self.expires = None
1043
if getattr(self, "checker_initiator_tag", None) is not None:
1044
GLib.source_remove(self.checker_initiator_tag)
578
if getattr(self, "checker_initiator_tag", False):
579
gobject.source_remove(self.checker_initiator_tag)
1045
580
self.checker_initiator_tag = None
1046
581
self.stop_checker()
1047
582
self.enabled = False
1048
if not quiet:
1049
self.send_changedstate()
1050
# Do not run this again if called by a GLib.timeout_add
583
# Do not run this again if called by a gobject.timeout_add
1051
584
return False
1052
585
1053
586
def __del__(self):
1054
587
self.disable()
1055
588
1056
589
def init_checker(self):
1057
590
# Schedule a new checker to be started an 'interval' from now,
1058
591
# and every interval from then on.
1059
if self.checker_initiator_tag is not None:
1060
GLib.source_remove(self.checker_initiator_tag)
1061
self.checker_initiator_tag = GLib.timeout_add(
1062
random.randrange(int(self.interval.total_seconds() * 1000
1063
+ 1)),
1064
self.start_checker)
592
self.checker_initiator_tag = (gobject.timeout_add
593
(self.interval_milliseconds(),
594
self.start_checker))
1065
595
# Schedule a disable() when 'timeout' has passed
1066
if self.disable_initiator_tag is not None:
1067
GLib.source_remove(self.disable_initiator_tag)
1068
self.disable_initiator_tag = GLib.timeout_add(
1069
int(self.timeout.total_seconds() * 1000), self.disable)
596
self.disable_initiator_tag = (gobject.timeout_add
597
(self.timeout_milliseconds(),
598
self.disable))
1070
599
# Also start a new checker *right now*.
1071
600
self.start_checker()
1072
1073
def checker_callback(self, source, condition, connection,
1074
command):
601
602
def checker_callback(self, pid, condition, command):
1075
603
"""The checker has completed, so take appropriate actions."""
1076
# Read return code from connection (see call_pipe)
1077
returncode = connection.recv()
1078
connection.close()
1079
if self.checker is not None:
1080
self.checker.join()
1081
604
self.checker_callback_tag = None
1082
605
self.checker = None
1083
1084
if returncode >= 0:
1085
self.last_checker_status = returncode
1086
self.last_checker_signal = None
606
if os.WIFEXITED(condition):
607
self.last_checker_status = os.WEXITSTATUS(condition)
1087
608
if self.last_checker_status == 0:
1088
609
logger.info("Checker for %(name)s succeeded",
1089
610
vars(self))
1090
611
self.checked_ok()
1091
612
else:
1092
logger.info("Checker for %(name)s failed", vars(self))
613
logger.info("Checker for %(name)s failed",
614
vars(self))
1093
615
else:
1094
616
self.last_checker_status = -1
1095
self.last_checker_signal = -returncode
1096
617
logger.warning("Checker for %(name)s crashed?",
1097
618
vars(self))
1098
return False
1099
1100
def checked_ok(self):
1101
"""Assert that the client has been seen, alive and well."""
1102
self.last_checked_ok = datetime.datetime.utcnow()
1103
self.last_checker_status = 0
1104
self.last_checker_signal = None
1105
self.bump_timeout()
1106
1107
def bump_timeout(self, timeout=None):
1108
"""Bump up the timeout for this client."""
619
620
def checked_ok(self, timeout=None):
621
"""Bump up the timeout for this client.
622
623
This should only be called when the client has been seen,
624
alive and well.
625
"""
1109
626
if timeout is None:
1110
627
timeout = self.timeout
628
self.last_checked_ok = datetime.datetime.utcnow()
1111
629
if self.disable_initiator_tag is not None:
1112
GLib.source_remove(self.disable_initiator_tag)
1113
self.disable_initiator_tag = None
630
gobject.source_remove(self.disable_initiator_tag)
1114
631
if getattr(self, "enabled", False):
1115
self.disable_initiator_tag = GLib.timeout_add(
1116
int(timeout.total_seconds() * 1000), self.disable)
632
self.disable_initiator_tag = (gobject.timeout_add
633
(timedelta_to_milliseconds
634
(timeout), self.disable))
1117
635
self.expires = datetime.datetime.utcnow() + timeout
1118
636
1119
637
def need_approval(self):
1120
638
self.last_approval_request = datetime.datetime.utcnow()
1121
639
1122
640
def start_checker(self):
1123
641
"""Start a new checker subprocess if one is not running.
1124
642
1125
643
If a checker already exists, leave it running and do
1126
644
nothing."""
1127
645
# The reason for not killing a running checker is that if we
1128
# did that, and if a checker (for some reason) started running
1129
# slowly and taking more than 'interval' time, then the client
1130
# would inevitably timeout, since no checker would get a
1131
# chance to run to completion. If we instead leave running
646
# did that, then if a checker (for some reason) started
647
# running slowly and taking more than 'interval' time, the
648
# client would inevitably timeout, since no checker would get
649
# a chance to run to completion. If we instead leave running
1132
650
# checkers alone, the checker would have to take more time
1133
651
# than 'timeout' for the client to be disabled, which is as it
1134
652
# should be.
1135
1136
if self.checker is not None and not self.checker.is_alive():
1137
logger.warning("Checker was not alive; joining")
1138
self.checker.join()
1139
self.checker = None
653
654
# If a checker exists, make sure it is not a zombie
655
try:
656
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
657
except (AttributeError, OSError) as error:
658
if (isinstance(error, OSError)
659
and error.errno != errno.ECHILD):
660
raise error
661
else:
662
if pid:
663
logger.warning("Checker was a zombie")
664
gobject.source_remove(self.checker_callback_tag)
665
self.checker_callback(pid, status,
666
self.current_checker_command)
1140
667
# Start a new checker if needed
1141
668
if self.checker is None:
1142
# Escape attributes for the shell
1143
escaped_attrs = {
1144
attr: shlex.quote(str(getattr(self, attr)))
1145
for attr in self.runtime_expansions}
1146
669
try:
1147
command = self.checker_command % escaped_attrs
1148
except TypeError as error:
1149
logger.error('Could not format string "%s"',
1150
self.checker_command,
1151
exc_info=error)
1152
return True # Try again later
670
# In case checker_command has exactly one % operator
671
command = self.checker_command % self.host
672
except TypeError:
673
# Escape attributes for the shell
674
escaped_attrs = dict(
675
(attr,
676
re.escape(unicode(str(getattr(self, attr, "")),
677
errors=
678
'replace')))
679
for attr in
680
self.runtime_expansions)
681
682
try:
683
command = self.checker_command % escaped_attrs
684
except TypeError as error:
685
logger.error('Could not format string "%s":'
686
' %s', self.checker_command, error)
687
return True # Try again later
1153
688
self.current_checker_command = command
1154
logger.info("Starting checker %r for %s", command,
1155
self.name)
1156
# We don't need to redirect stdout and stderr, since
1157
# in normal mode, that is already done by daemon(),
1158
# and in debug mode we don't want to. (Stdin is
1159
# always replaced by /dev/null.)
1160
# The exception is when not debugging but nevertheless
1161
# running in the foreground; use the previously
1162
# created wnull.
1163
popen_args = {"close_fds": True,
1164
"shell": True,
1165
"cwd": "/"}
1166
if (not self.server_settings["debug"]
1167
and self.server_settings["foreground"]):
1168
popen_args.update({"stdout": wnull,
1169
"stderr": wnull})
1170
pipe = multiprocessing.Pipe(duplex=False)
1171
self.checker = multiprocessing.Process(
1172
target=call_pipe,
1173
args=(pipe[1], subprocess.call, command),
1174
kwargs=popen_args)
1175
self.checker.start()
1176
self.checker_callback_tag = GLib.io_add_watch(
1177
GLib.IOChannel.unix_new(pipe[0].fileno()),
1178
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1179
self.checker_callback, pipe[0], command)
1180
# Re-run this periodically if run by GLib.timeout_add
689
try:
690
logger.info("Starting checker %r for %s",
691
command, self.name)
692
# We don't need to redirect stdout and stderr, since
693
# in normal mode, that is already done by daemon(),
694
# and in debug mode we don't want to. (Stdin is
695
# always replaced by /dev/null.)
696
self.checker = subprocess.Popen(command,
697
close_fds=True,
698
shell=True, cwd="/")
699
self.checker_callback_tag = (gobject.child_watch_add
700
(self.checker.pid,
701
self.checker_callback,
702
data=command))
703
# The checker may have completed before the gobject
704
# watch was added. Check for this.
705
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
706
if pid:
707
gobject.source_remove(self.checker_callback_tag)
708
self.checker_callback(pid, status, command)
709
except OSError as error:
710
logger.error("Failed to start subprocess: %s",
711
error)
712
# Re-run this periodically if run by gobject.timeout_add
1181
713
return True
1182
714
1183
715
def stop_checker(self):
1184
716
"""Force the checker process, if any, to stop."""
1185
717
if self.checker_callback_tag:
1186
GLib.source_remove(self.checker_callback_tag)
718
gobject.source_remove(self.checker_callback_tag)
1187
719
self.checker_callback_tag = None
1188
720
if getattr(self, "checker", None) is None:
1189
721
return
1190
722
logger.debug("Stopping checker for %(name)s", vars(self))
1191
self.checker.terminate()
723
try:
724
os.kill(self.checker.pid, signal.SIGTERM)
725
#time.sleep(0.5)
726
#if self.checker.poll() is None:
727
# os.kill(self.checker.pid, signal.SIGKILL)
728
except OSError as error:
729
if error.errno != errno.ESRCH: # No such process
730
raise
1192
731
self.checker = None
1193
732
1194
733
1195
def dbus_service_property(dbus_interface,
1196
signature="v",
1197
access="readwrite",
1198
byte_arrays=False):
734
def dbus_service_property(dbus_interface, signature="v",
735
access="readwrite", byte_arrays=False):
1199
736
"""Decorators for marking methods of a DBusObjectWithProperties to
1200
737
become properties on the D-Bus.
1201
738
1202
739
The decorated method will be called with no arguments by "Get"
1203
740
and with one argument by "Set".
1204
741
1205
742
The parameters, where they are supported, are the same as
1206
743
dbus.service.method, except there is only "signature", since the
1207
744
type from Get() and the type sent to Set() is the same.
1210
747
# "Set" method, so we fail early here:
1211
748
if byte_arrays and signature != "ay":
1212
749
raise ValueError("Byte arrays not supported for non-'ay'"
1213
" signature {!r}".format(signature))
1214
750
" signature %r" % signature)
1215
751
def decorator(func):
1216
752
func._dbus_is_property = True
1217
753
func._dbus_interface = dbus_interface
1220
756
func._dbus_name = func.__name__
1221
757
if func._dbus_name.endswith("_dbus_property"):
1222
758
func._dbus_name = func._dbus_name[:-14]
1223
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1224
return func
1225
1226
return decorator
1227
1228
1229
def dbus_interface_annotations(dbus_interface):
1230
"""Decorator for marking functions returning interface annotations
1231
1232
Usage:
1233
1234
@dbus_interface_annotations("org.example.Interface")
1235
def _foo(self): # Function name does not matter
1236
return {"org.freedesktop.DBus.Deprecated": "true",
1237
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1238
"false"}
1239
"""
1240
1241
def decorator(func):
1242
func._dbus_is_interface = True
1243
func._dbus_interface = dbus_interface
1244
func._dbus_name = dbus_interface
1245
return func
1246
1247
return decorator
1248
1249
1250
def dbus_annotations(annotations):
1251
"""Decorator to annotate D-Bus methods, signals or properties
1252
Usage:
1253
1254
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1255
"org.freedesktop.DBus.Property."
1256
"EmitsChangedSignal": "false"})
1257
@dbus_service_property("org.example.Interface", signature="b",
1258
access="r")
1259
def Property_dbus_property(self):
1260
return dbus.Boolean(False)
1261
1262
See also the DBusObjectWithAnnotations class.
1263
"""
1264
1265
def decorator(func):
1266
func._dbus_annotations = annotations
1267
return func
1268
759
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
760
return func
1269
761
return decorator
1270
762
1271
763
1272
764
class DBusPropertyException(dbus.exceptions.DBusException):
1273
765
"""A base class for D-Bus property-related exceptions
1274
766
"""
1275
pass
767
def __unicode__(self):
768
return unicode(str(self))
1276
769
1277
770
1278
771
class DBusPropertyAccessException(DBusPropertyException):
1287
780
pass
1288
781
1289
782
1290
class DBusObjectWithAnnotations(dbus.service.Object):
1291
"""A D-Bus object with annotations.
1292
1293
Classes inheriting from this can use the dbus_annotations
1294
decorator to add annotations to methods or signals.
1295
"""
1296
1297
@staticmethod
1298
def _is_dbus_thing(thing):
1299
"""Returns a function testing if an attribute is a D-Bus thing
1300
1301
If called like _is_dbus_thing("method") it returns a function
1302
suitable for use as predicate to inspect.getmembers().
1303
"""
1304
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1305
False)
1306
1307
def _get_all_dbus_things(self, thing):
1308
"""Returns a generator of (name, attribute) pairs
1309
"""
1310
return ((getattr(athing.__get__(self), "_dbus_name", name),
1311
athing.__get__(self))
1312
for cls in self.__class__.__mro__
1313
for name, athing in
1314
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1315
1316
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1317
out_signature="s",
1318
path_keyword='object_path',
1319
connection_keyword='connection')
1320
def Introspect(self, object_path, connection):
1321
"""Overloading of standard D-Bus method.
1322
1323
Inserts annotation tags on methods and signals.
1324
"""
1325
xmlstring = dbus.service.Object.Introspect(self, object_path,
1326
connection)
1327
try:
1328
document = xml.dom.minidom.parseString(xmlstring)
1329
1330
for if_tag in document.getElementsByTagName("interface"):
1331
# Add annotation tags
1332
for typ in ("method", "signal"):
1333
for tag in if_tag.getElementsByTagName(typ):
1334
annots = dict()
1335
for name, prop in (self.
1336
_get_all_dbus_things(typ)):
1337
if (name == tag.getAttribute("name")
1338
and prop._dbus_interface
1339
== if_tag.getAttribute("name")):
1340
annots.update(getattr(
1341
prop, "_dbus_annotations", {}))
1342
for name, value in annots.items():
1343
ann_tag = document.createElement(
1344
"annotation")
1345
ann_tag.setAttribute("name", name)
1346
ann_tag.setAttribute("value", value)
1347
tag.appendChild(ann_tag)
1348
# Add interface annotation tags
1349
for annotation, value in dict(
1350
itertools.chain.from_iterable(
1351
annotations().items()
1352
for name, annotations
1353
in self._get_all_dbus_things("interface")
1354
if name == if_tag.getAttribute("name")
1355
)).items():
1356
ann_tag = document.createElement("annotation")
1357
ann_tag.setAttribute("name", annotation)
1358
ann_tag.setAttribute("value", value)
1359
if_tag.appendChild(ann_tag)
1360
# Fix argument name for the Introspect method itself
1361
if (if_tag.getAttribute("name")
1362
== dbus.INTROSPECTABLE_IFACE):
1363
for cn in if_tag.getElementsByTagName("method"):
1364
if cn.getAttribute("name") == "Introspect":
1365
for arg in cn.getElementsByTagName("arg"):
1366
if (arg.getAttribute("direction")
1367
== "out"):
1368
arg.setAttribute("name",
1369
"xml_data")
1370
xmlstring = document.toxml("utf-8")
1371
document.unlink()
1372
except (AttributeError, xml.dom.DOMException,
1373
xml.parsers.expat.ExpatError) as error:
1374
logger.error("Failed to override Introspection method",
1375
exc_info=error)
1376
return xmlstring
1377
1378
1379
class DBusObjectWithProperties(DBusObjectWithAnnotations):
783
class DBusObjectWithProperties(dbus.service.Object):
1380
784
"""A D-Bus object with properties.
1381
785
1382
786
Classes inheriting from this can use the dbus_service_property
1383
787
decorator to expose methods as D-Bus properties. It exposes the
1384
788
standard Get(), Set(), and GetAll() methods on the D-Bus.
1385
789
"""
1386
790
791
@staticmethod
792
def _is_dbus_property(obj):
793
return getattr(obj, "_dbus_is_property", False)
794
795
def _get_all_dbus_properties(self):
796
"""Returns a generator of (name, attribute) pairs
797
"""
798
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
799
for cls in self.__class__.__mro__
800
for name, prop in
801
inspect.getmembers(cls, self._is_dbus_property))
802
1387
803
def _get_dbus_property(self, interface_name, property_name):
1388
804
"""Returns a bound method if one exists which is a D-Bus
1389
805
property with the specified name and interface.
1390
806
"""
1391
for cls in self.__class__.__mro__:
1392
for name, value in inspect.getmembers(
1393
cls, self._is_dbus_thing("property")):
807
for cls in self.__class__.__mro__:
808
for name, value in (inspect.getmembers
809
(cls, self._is_dbus_property)):
1394
810
if (value._dbus_name == property_name
1395
811
and value._dbus_interface == interface_name):
1396
812
return value.__get__(self)
1397
813
1398
814
# No such property
1399
raise DBusPropertyNotFound("{}:{}.{}".format(
1400
self.dbus_object_path, interface_name, property_name))
1401
1402
@classmethod
1403
def _get_all_interface_names(cls):
1404
"""Get a sequence of all interfaces supported by an object"""
1405
return (name for name in set(getattr(getattr(x, attr),
1406
"_dbus_interface", None)
1407
for x in (inspect.getmro(cls))
1408
for attr in dir(x))
1409
if name is not None)
1410
1411
@dbus.service.method(dbus.PROPERTIES_IFACE,
1412
in_signature="ss",
815
raise DBusPropertyNotFound(self.dbus_object_path + ":"
816
+ interface_name + "."
817
+ property_name)
818
819
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1413
820
out_signature="v")
1414
821
def Get(self, interface_name, property_name):
1415
822
"""Standard D-Bus property Get() method, see D-Bus standard.
1421
828
if not hasattr(value, "variant_level"):
1422
829
return value
1423
830
return type(value)(value, variant_level=value.variant_level+1)
1424
831
1425
832
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1426
833
def Set(self, interface_name, property_name, value):
1427
834
"""Standard D-Bus property Set() method, see D-Bus standard.
1433
840
# The byte_arrays option is not supported yet on
1434
841
# signatures other than "ay".
1435
842
if prop._dbus_signature != "ay":
1436
raise ValueError("Byte arrays not supported for non-"
1437
"'ay' signature {!r}"
1438
.format(prop._dbus_signature))
1439
value = dbus.ByteArray(bytes(value))
843
raise ValueError
844
value = dbus.ByteArray(''.join(unichr(byte)
845
for byte in value))
1440
846
prop(value)
1441
1442
@dbus.service.method(dbus.PROPERTIES_IFACE,
1443
in_signature="s",
847
848
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1444
849
out_signature="a{sv}")
1445
850
def GetAll(self, interface_name):
1446
851
"""Standard D-Bus property GetAll() method, see D-Bus
1447
852
standard.
1448
853
1449
854
Note: Will not include properties with access="write".
1450
855
"""
1451
856
properties = {}
1452
for name, prop in self._get_all_dbus_things("property"):
857
for name, prop in self._get_all_dbus_properties():
1453
858
if (interface_name
1454
859
and interface_name != prop._dbus_interface):
1455
860
# Interface non-empty but did not match
1461
866
if not hasattr(value, "variant_level"):
1462
867
properties[name] = value
1463
868
continue
1464
properties[name] = type(value)(
1465
value, variant_level=value.variant_level + 1)
869
properties[name] = type(value)(value, variant_level=
870
value.variant_level+1)
1466
871
return dbus.Dictionary(properties, signature="sv")
1467
1468
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1469
def PropertiesChanged(self, interface_name, changed_properties,
1470
invalidated_properties):
1471
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1472
standard.
1473
"""
1474
pass
1475
872
1476
873
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1477
874
out_signature="s",
1478
875
path_keyword='object_path',
1479
876
connection_keyword='connection')
1480
877
def Introspect(self, object_path, connection):
1481
"""Overloading of standard D-Bus method.
1482
1483
Inserts property tags and interface annotation tags.
878
"""Standard D-Bus method, overloaded to insert property tags.
1484
879
"""
1485
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1486
object_path,
1487
connection)
880
xmlstring = dbus.service.Object.Introspect(self, object_path,
881
connection)
1488
882
try:
1489
883
document = xml.dom.minidom.parseString(xmlstring)
1490
1491
884
def make_tag(document, name, prop):
1492
885
e = document.createElement("property")
1493
886
e.setAttribute("name", name)
1494
887
e.setAttribute("type", prop._dbus_signature)
1495
888
e.setAttribute("access", prop._dbus_access)
1496
889
return e
1497
1498
890
for if_tag in document.getElementsByTagName("interface"):
1499
# Add property tags
1500
891
for tag in (make_tag(document, name, prop)
1501
892
for name, prop
1502
in self._get_all_dbus_things("property")
893
in self._get_all_dbus_properties()
1503
894
if prop._dbus_interface
1504
895
== if_tag.getAttribute("name")):
1505
896
if_tag.appendChild(tag)
1506
# Add annotation tags for properties
1507
for tag in if_tag.getElementsByTagName("property"):
1508
annots = dict()
1509
for name, prop in self._get_all_dbus_things(
1510
"property"):
1511
if (name == tag.getAttribute("name")
1512
and prop._dbus_interface
1513
== if_tag.getAttribute("name")):
1514
annots.update(getattr(
1515
prop, "_dbus_annotations", {}))
1516
for name, value in annots.items():
1517
ann_tag = document.createElement(
1518
"annotation")
1519
ann_tag.setAttribute("name", name)
1520
ann_tag.setAttribute("value", value)
1521
tag.appendChild(ann_tag)
1522
897
# Add the names to the return values for the
1523
898
# "org.freedesktop.DBus.Properties" methods
1524
899
if (if_tag.getAttribute("name")
1539
914
except (AttributeError, xml.dom.DOMException,
1540
915
xml.parsers.expat.ExpatError) as error:
1541
916
logger.error("Failed to override Introspection method",
1542
exc_info=error)
1543
return xmlstring
1544
1545
1546
try:
1547
dbus.OBJECT_MANAGER_IFACE
1548
except AttributeError:
1549
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1550
1551
1552
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1553
"""A D-Bus object with an ObjectManager.
1554
1555
Classes inheriting from this exposes the standard
1556
GetManagedObjects call and the InterfacesAdded and
1557
InterfacesRemoved signals on the standard
1558
"org.freedesktop.DBus.ObjectManager" interface.
1559
1560
Note: No signals are sent automatically; they must be sent
1561
manually.
1562
"""
1563
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1564
out_signature="a{oa{sa{sv}}}")
1565
def GetManagedObjects(self):
1566
"""This function must be overridden"""
1567
raise NotImplementedError()
1568
1569
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1570
signature="oa{sa{sv}}")
1571
def InterfacesAdded(self, object_path, interfaces_and_properties):
1572
pass
1573
1574
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1575
def InterfacesRemoved(self, object_path, interfaces):
1576
pass
1577
1578
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1579
out_signature="s",
1580
path_keyword='object_path',
1581
connection_keyword='connection')
1582
def Introspect(self, object_path, connection):
1583
"""Overloading of standard D-Bus method.
1584
1585
Override return argument name of GetManagedObjects to be
1586
"objpath_interfaces_and_properties"
1587
"""
1588
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1589
object_path,
1590
connection)
1591
try:
1592
document = xml.dom.minidom.parseString(xmlstring)
1593
1594
for if_tag in document.getElementsByTagName("interface"):
1595
# Fix argument name for the GetManagedObjects method
1596
if (if_tag.getAttribute("name")
1597
== dbus.OBJECT_MANAGER_IFACE):
1598
for cn in if_tag.getElementsByTagName("method"):
1599
if (cn.getAttribute("name")
1600
== "GetManagedObjects"):
1601
for arg in cn.getElementsByTagName("arg"):
1602
if (arg.getAttribute("direction")
1603
== "out"):
1604
arg.setAttribute(
1605
"name",
1606
"objpath_interfaces"
1607
"_and_properties")
1608
xmlstring = document.toxml("utf-8")
1609
document.unlink()
1610
except (AttributeError, xml.dom.DOMException,
1611
xml.parsers.expat.ExpatError) as error:
1612
logger.error("Failed to override Introspection method",
1613
exc_info=error)
1614
return xmlstring
1615
1616
1617
def datetime_to_dbus(dt, variant_level=0):
917
error)
918
return xmlstring
919
920
921
def datetime_to_dbus (dt, variant_level=0):
1618
922
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1619
923
if dt is None:
1620
return dbus.String("", variant_level=variant_level)
1621
return dbus.String(dt.isoformat(), variant_level=variant_level)
1622
1623
1624
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1625
"""A class decorator; applied to a subclass of
1626
dbus.service.Object, it will add alternate D-Bus attributes with
1627
interface names according to the "alt_interface_names" mapping.
1628
Usage:
1629
1630
@alternate_dbus_interfaces({"org.example.Interface":
1631
"net.example.AlternateInterface"})
1632
class SampleDBusObject(dbus.service.Object):
1633
@dbus.service.method("org.example.Interface")
1634
def SampleDBusMethod():
1635
pass
1636
1637
The above "SampleDBusMethod" on "SampleDBusObject" will be
1638
reachable via two interfaces: "org.example.Interface" and
1639
"net.example.AlternateInterface", the latter of which will have
1640
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1641
"true", unless "deprecate" is passed with a False value.
1642
1643
This works for methods and signals, and also for D-Bus properties
1644
(from DBusObjectWithProperties) and interfaces (from the
1645
dbus_interface_annotations decorator).
924
return dbus.String("", variant_level = variant_level)
925
return dbus.String(dt.isoformat(),
926
variant_level=variant_level)
927
928
929
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
930
.__metaclass__):
931
"""Applied to an empty subclass of a D-Bus object, this metaclass
932
will add additional D-Bus attributes matching a certain pattern.
1646
933
"""
1647
1648
def wrapper(cls):
1649
for orig_interface_name, alt_interface_name in (
1650
alt_interface_names.items()):
1651
attr = {}
1652
interface_names = set()
1653
# Go though all attributes of the class
1654
for attrname, attribute in inspect.getmembers(cls):
934
def __new__(mcs, name, bases, attr):
935
# Go through all the base classes which could have D-Bus
936
# methods, signals, or properties in them
937
for base in (b for b in bases
938
if issubclass(b, dbus.service.Object)):
939
# Go though all attributes of the base class
940
for attrname, attribute in inspect.getmembers(base):
1655
941
# Ignore non-D-Bus attributes, and D-Bus attributes
1656
942
# with the wrong interface name
1657
943
if (not hasattr(attribute, "_dbus_interface")
1658
or not attribute._dbus_interface.startswith(
1659
orig_interface_name)):
944
or not attribute._dbus_interface
945
.startswith("se.recompile.Mandos")):
1660
946
continue
1661
947
# Create an alternate D-Bus interface name based on
1662
948
# the current name
1663
alt_interface = attribute._dbus_interface.replace(
1664
orig_interface_name, alt_interface_name)
1665
interface_names.add(alt_interface)
949
alt_interface = (attribute._dbus_interface
950
.replace("se.recompile.Mandos",
951
"se.bsnet.fukt.Mandos"))
1666
952
# Is this a D-Bus signal?
1667
953
if getattr(attribute, "_dbus_is_signal", False):
1668
# Extract the original non-method undecorated
1669
# function by black magic
1670
if sys.version_info.major == 2:
1671
nonmethod_func = (dict(
954
# Extract the original non-method function by
955
# black magic
956
nonmethod_func = (dict(
1672
957
zip(attribute.func_code.co_freevars,
1673
attribute.__closure__))
1674
["func"].cell_contents)
1675
else:
1676
nonmethod_func = (dict(
1677
zip(attribute.__code__.co_freevars,
1678
attribute.__closure__))
1679
["func"].cell_contents)
958
attribute.__closure__))["func"]
959
.cell_contents)
1680
960
# Create a new, but exactly alike, function
1681
961
# object, and decorate it to be a new D-Bus signal
1682
962
# with the alternate D-Bus interface name
1683
new_function = copy_function(nonmethod_func)
1684
new_function = (dbus.service.signal(
1685
alt_interface,
1686
attribute._dbus_signature)(new_function))
1687
# Copy annotations, if any
1688
try:
1689
new_function._dbus_annotations = dict(
1690
attribute._dbus_annotations)
1691
except AttributeError:
1692
pass
1693
963
new_function = (dbus.service.signal
964
(alt_interface,
965
attribute._dbus_signature)
966
(types.FunctionType(
967
nonmethod_func.func_code,
968
nonmethod_func.func_globals,
969
nonmethod_func.func_name,
970
nonmethod_func.func_defaults,
971
nonmethod_func.func_closure)))
1694
972
# Define a creator of a function to call both the
1695
# original and alternate functions, so both the
1696
# original and alternate signals gets sent when
1697
# the function is called
973
# old and new functions, so both the old and new
974
# signals gets sent when the function is called
1698
975
def fixscope(func1, func2):
1699
976
"""This function is a scope container to pass
1700
977
func1 and func2 to the "call_both" function
1701
978
outside of its arguments"""
1702
1703
@functools.wraps(func2)
1704
979
def call_both(*args, **kwargs):
1705
980
"""This function will emit two D-Bus
1706
981
signals by calling func1 and func2"""
1707
982
func1(*args, **kwargs)
1708
983
func2(*args, **kwargs)
1709
# Make wrapper function look like a D-Bus
1710
# signal
1711
for name, attr in inspect.getmembers(func2):
1712
if name.startswith("_dbus_"):
1713
setattr(call_both, name, attr)
1714
1715
984
return call_both
1716
985
# Create the "call_both" function and add it to
1717
986
# the class
1718
attr[attrname] = fixscope(attribute, new_function)
987
attr[attrname] = fixscope(attribute,
988
new_function)
1719
989
# Is this a D-Bus method?
1720
990
elif getattr(attribute, "_dbus_is_method", False):
1721
991
# Create a new, but exactly alike, function
1722
992
# object. Decorate it to be a new D-Bus method
1723
993
# with the alternate D-Bus interface name. Add it
1724
994
# to the class.
1725
attr[attrname] = (
1726
dbus.service.method(
1727
alt_interface,
1728
attribute._dbus_in_signature,
1729
attribute._dbus_out_signature)
1730
(copy_function(attribute)))
1731
# Copy annotations, if any
1732
try:
1733
attr[attrname]._dbus_annotations = dict(
1734
attribute._dbus_annotations)
1735
except AttributeError:
1736
pass
995
attr[attrname] = (dbus.service.method
996
(alt_interface,
997
attribute._dbus_in_signature,
998
attribute._dbus_out_signature)
999
(types.FunctionType
1000
(attribute.func_code,
1001
attribute.func_globals,
1002
attribute.func_name,
1003
attribute.func_defaults,
1004
attribute.func_closure)))
1737
1005
# Is this a D-Bus property?
1738
1006
elif getattr(attribute, "_dbus_is_property", False):
1739
1007
# Create a new, but exactly alike, function
1740
1008
# object, and decorate it to be a new D-Bus
1741
1009
# property with the alternate D-Bus interface
1742
1010
# name. Add it to the class.
1743
attr[attrname] = (dbus_service_property(
1744
alt_interface, attribute._dbus_signature,
1745
attribute._dbus_access,
1746
attribute._dbus_get_args_options
1747
["byte_arrays"])
1748
(copy_function(attribute)))
1749
# Copy annotations, if any
1750
try:
1751
attr[attrname]._dbus_annotations = dict(
1752
attribute._dbus_annotations)
1753
except AttributeError:
1754
pass
1755
# Is this a D-Bus interface?
1756
elif getattr(attribute, "_dbus_is_interface", False):
1757
# Create a new, but exactly alike, function
1758
# object. Decorate it to be a new D-Bus interface
1759
# with the alternate D-Bus interface name. Add it
1760
# to the class.
1761
attr[attrname] = (
1762
dbus_interface_annotations(alt_interface)
1763
(copy_function(attribute)))
1764
if deprecate:
1765
# Deprecate all alternate interfaces
1766
iname = "_AlternateDBusNames_interface_annotation{}"
1767
for interface_name in interface_names:
1768
1769
@dbus_interface_annotations(interface_name)
1770
def func(self):
1771
return {"org.freedesktop.DBus.Deprecated":
1772
"true"}
1773
# Find an unused name
1774
for aname in (iname.format(i)
1775
for i in itertools.count()):
1776
if aname not in attr:
1777
attr[aname] = func
1778
break
1779
if interface_names:
1780
# Replace the class with a new subclass of it with
1781
# methods, signals, etc. as created above.
1782
if sys.version_info.major == 2:
1783
cls = type(b"{}Alternate".format(cls.__name__),
1784
(cls, ), attr)
1785
else:
1786
cls = type("{}Alternate".format(cls.__name__),
1787
(cls, ), attr)
1788
return cls
1789
1790
return wrapper
1791
1792
1793
@alternate_dbus_interfaces({"se.recompile.Mandos":
1794
"se.bsnet.fukt.Mandos"})
1011
attr[attrname] = (dbus_service_property
1012
(alt_interface,
1013
attribute._dbus_signature,
1014
attribute._dbus_access,
1015
attribute
1016
._dbus_get_args_options
1017
["byte_arrays"])
1018
(types.FunctionType
1019
(attribute.func_code,
1020
attribute.func_globals,
1021
attribute.func_name,
1022
attribute.func_defaults,
1023
attribute.func_closure)))
1024
return type.__new__(mcs, name, bases, attr)
1025
1026
1795
1027
class ClientDBus(Client, DBusObjectWithProperties):
1796
1028
"""A Client class using D-Bus
1797
1029
1798
1030
Attributes:
1799
1031
dbus_object_path: dbus.ObjectPath
1800
1032
bus: dbus.SystemBus()
1801
1033
"""
1802
1034
1803
1035
runtime_expansions = (Client.runtime_expansions
1804
+ ("dbus_object_path", ))
1805
1806
_interface = "se.recompile.Mandos.Client"
1807
1036
+ ("dbus_object_path",))
1037
1808
1038
# dbus.service.Object doesn't use super(), so we can't either.
1809
1810
def __init__(self, bus=None, *args, **kwargs):
1039
1040
def __init__(self, bus = None, *args, **kwargs):
1811
1041
self.bus = bus
1812
1042
Client.__init__(self, *args, **kwargs)
1043
self._approvals_pending = 0
1044
1045
self._approvals_pending = 0
1813
1046
# Only now, when this client is initialized, can it show up on
1814
1047
# the D-Bus
1815
client_object_name = str(self.name).translate(
1048
client_object_name = unicode(self.name).translate(
1816
1049
{ord("."): ord("_"),
1817
1050
ord("-"): ord("_")})
1818
self.dbus_object_path = dbus.ObjectPath(
1819
"/clients/" + client_object_name)
1051
self.dbus_object_path = (dbus.ObjectPath
1052
("/clients/" + client_object_name))
1820
1053
DBusObjectWithProperties.__init__(self, self.bus,
1821
1054
self.dbus_object_path)
1822
1823
def notifychangeproperty(transform_func, dbus_name,
1824
type_func=lambda x: x,
1825
variant_level=1,
1826
invalidate_only=False,
1827
_interface=_interface):
1055
1056
def notifychangeproperty(transform_func,
1057
dbus_name, type_func=lambda x: x,
1058
variant_level=1):
1828
1059
""" Modify a variable so that it's a property which announces
1829
1060
its changes to DBus.
1830
1061
1831
1062
transform_fun: Function that takes a value and a variant_level
1832
1063
and transforms it to a D-Bus type.
1833
1064
dbus_name: D-Bus name of the variable
1835
1066
to the D-Bus. Default: no transform
1836
1067
variant_level: D-Bus variant level. Default: 1
1837
1068
"""
1838
attrname = "_{}".format(dbus_name)
1839
1069
attrname = "_{0}".format(dbus_name)
1840
1070
def setter(self, value):
1841
1071
if hasattr(self, "dbus_object_path"):
1842
1072
if (not hasattr(self, attrname) or
1843
1073
type_func(getattr(self, attrname, None))
1844
1074
!= type_func(value)):
1845
if invalidate_only:
1846
self.PropertiesChanged(
1847
_interface, dbus.Dictionary(),
1848
dbus.Array((dbus_name, )))
1849
else:
1850
dbus_value = transform_func(
1851
type_func(value),
1852
variant_level=variant_level)
1853
self.PropertyChanged(dbus.String(dbus_name),
1854
dbus_value)
1855
self.PropertiesChanged(
1856
_interface,
1857
dbus.Dictionary({dbus.String(dbus_name):
1858
dbus_value}),
1859
dbus.Array())
1075
dbus_value = transform_func(type_func(value),
1076
variant_level
1077
=variant_level)
1078
self.PropertyChanged(dbus.String(dbus_name),
1079
dbus_value)
1860
1080
setattr(self, attrname, value)
1861
1081
1862
1082
return property(lambda self: getattr(self, attrname), setter)
1863
1083
1084
1864
1085
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1865
1086
approvals_pending = notifychangeproperty(dbus.Boolean,
1866
1087
"ApprovalPending",
1867
type_func=bool)
1088
type_func = bool)
1868
1089
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1869
1090
last_enabled = notifychangeproperty(datetime_to_dbus,
1870
1091
"LastEnabled")
1871
checker = notifychangeproperty(
1872
dbus.Boolean, "CheckerRunning",
1873
type_func=lambda checker: checker is not None)
1092
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1093
type_func = lambda checker:
1094
checker is not None)
1874
1095
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1875
1096
"LastCheckedOK")
1876
last_checker_status = notifychangeproperty(dbus.Int16,
1877
"LastCheckerStatus")
1878
1097
last_approval_request = notifychangeproperty(
1879
1098
datetime_to_dbus, "LastApprovalRequest")
1880
1099
approved_by_default = notifychangeproperty(dbus.Boolean,
1881
1100
"ApprovedByDefault")
1882
approval_delay = notifychangeproperty(
1883
dbus.UInt64, "ApprovalDelay",
1884
type_func=lambda td: td.total_seconds() * 1000)
1101
approval_delay = notifychangeproperty(dbus.UInt64,
1102
"ApprovalDelay",
1103
type_func =
1104
timedelta_to_milliseconds)
1885
1105
approval_duration = notifychangeproperty(
1886
1106
dbus.UInt64, "ApprovalDuration",
1887
type_func=lambda td: td.total_seconds() * 1000)
1107
type_func = timedelta_to_milliseconds)
1888
1108
host = notifychangeproperty(dbus.String, "Host")
1889
timeout = notifychangeproperty(
1890
dbus.UInt64, "Timeout",
1891
type_func=lambda td: td.total_seconds() * 1000)
1109
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1110
type_func =
1111
timedelta_to_milliseconds)
1892
1112
extended_timeout = notifychangeproperty(
1893
1113
dbus.UInt64, "ExtendedTimeout",
1894
type_func=lambda td: td.total_seconds() * 1000)
1895
interval = notifychangeproperty(
1896
dbus.UInt64, "Interval",
1897
type_func=lambda td: td.total_seconds() * 1000)
1114
type_func = timedelta_to_milliseconds)
1115
interval = notifychangeproperty(dbus.UInt64,
1116
"Interval",
1117
type_func =
1118
timedelta_to_milliseconds)
1898
1119
checker_command = notifychangeproperty(dbus.String, "Checker")
1899
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1900
invalidate_only=True)
1901
1120
1902
1121
del notifychangeproperty
1903
1122
1904
1123
def __del__(self, *args, **kwargs):
1905
1124
try:
1906
1125
self.remove_from_connection()
1909
1128
if hasattr(DBusObjectWithProperties, "__del__"):
1910
1129
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1911
1130
Client.__del__(self, *args, **kwargs)
1912
1913
def checker_callback(self, source, condition,
1914
connection, command, *args, **kwargs):
1915
ret = Client.checker_callback(self, source, condition,
1916
connection, command, *args,
1917
**kwargs)
1918
exitstatus = self.last_checker_status
1919
if exitstatus >= 0:
1131
1132
def checker_callback(self, pid, condition, command,
1133
*args, **kwargs):
1134
self.checker_callback_tag = None
1135
self.checker = None
1136
if os.WIFEXITED(condition):
1137
exitstatus = os.WEXITSTATUS(condition)
1920
1138
# Emit D-Bus signal
1921
1139
self.CheckerCompleted(dbus.Int16(exitstatus),
1922
# This is specific to GNU libC
1923
dbus.Int64(exitstatus << 8),
1140
dbus.Int64(condition),
1924
1141
dbus.String(command))
1925
1142
else:
1926
1143
# Emit D-Bus signal
1927
1144
self.CheckerCompleted(dbus.Int16(-1),
1928
dbus.Int64(
1929
# This is specific to GNU libC
1930
(exitstatus << 8)
1931
| self.last_checker_signal),
1145
dbus.Int64(condition),
1932
1146
dbus.String(command))
1933
return ret
1934
1147
1148
return Client.checker_callback(self, pid, condition, command,
1149
*args, **kwargs)
1150
1935
1151
def start_checker(self, *args, **kwargs):
1936
old_checker_pid = getattr(self.checker, "pid", None)
1152
old_checker = self.checker
1153
if self.checker is not None:
1154
old_checker_pid = self.checker.pid
1155
else:
1156
old_checker_pid = None
1937
1157
r = Client.start_checker(self, *args, **kwargs)
1938
1158
# Only if new checker process was started
1939
1159
if (self.checker is not None
1941
1161
# Emit D-Bus signal
1942
1162
self.CheckerStarted(self.current_checker_command)
1943
1163
return r
1944
1164
1945
1165
def _reset_approved(self):
1946
1166
self.approved = None
1947
1167
return False
1948
1168
1949
1169
def approve(self, value=True):
1170
self.send_changedstate()
1950
1171
self.approved = value
1951
GLib.timeout_add(int(self.approval_duration.total_seconds()
1952
* 1000), self._reset_approved)
1953
self.send_changedstate()
1954
1955
# D-Bus methods, signals & properties
1956
1957
# Interfaces
1958
1959
# Signals
1960
1172
gobject.timeout_add(timedelta_to_milliseconds
1173
(self.approval_duration),
1174
self._reset_approved)
1175
1176
1177
## D-Bus methods, signals & properties
1178
_interface = "se.recompile.Mandos.Client"
1179
1180
## Signals
1181
1961
1182
# CheckerCompleted - signal
1962
1183
@dbus.service.signal(_interface, signature="nxs")
1963
1184
def CheckerCompleted(self, exitcode, waitstatus, command):
1964
1185
"D-Bus signal"
1965
1186
pass
1966
1187
1967
1188
# CheckerStarted - signal
1968
1189
@dbus.service.signal(_interface, signature="s")
1969
1190
def CheckerStarted(self, command):
1970
1191
"D-Bus signal"
1971
1192
pass
1972
1193
1973
1194
# PropertyChanged - signal
1974
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1975
1195
@dbus.service.signal(_interface, signature="sv")
1976
1196
def PropertyChanged(self, property, value):
1977
1197
"D-Bus signal"
1978
1198
pass
1979
1199
1980
1200
# GotSecret - signal
1981
1201
@dbus.service.signal(_interface)
1982
1202
def GotSecret(self):
1985
1205
server to mandos-client
1986
1206
"""
1987
1207
pass
1988
1208
1989
1209
# Rejected - signal
1990
1210
@dbus.service.signal(_interface, signature="s")
1991
1211
def Rejected(self, reason):
1992
1212
"D-Bus signal"
1993
1213
pass
1994
1214
1995
1215
# NeedApproval - signal
1996
1216
@dbus.service.signal(_interface, signature="tb")
1997
1217
def NeedApproval(self, timeout, default):
1998
1218
"D-Bus signal"
1999
1219
return self.need_approval()
2000
2001
# Methods
2002
1220
1221
# NeRwequest - signal
1222
@dbus.service.signal(_interface, signature="s")
1223
def NewRequest(self, ip):
1224
"""D-Bus signal
1225
Is sent after a client request a password.
1226
"""
1227
pass
1228
1229
## Methods
1230
2003
1231
# Approve - method
2004
1232
@dbus.service.method(_interface, in_signature="b")
2005
1233
def Approve(self, value):
2006
1234
self.approve(value)
2007
1235
2008
1236
# CheckedOK - method
2009
1237
@dbus.service.method(_interface)
2010
1238
def CheckedOK(self):
2011
1239
self.checked_ok()
2012
1240
2013
1241
# Enable - method
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2015
1242
@dbus.service.method(_interface)
2016
1243
def Enable(self):
2017
1244
"D-Bus method"
2018
1245
self.enable()
2019
1246
2020
1247
# StartChecker - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2022
1248
@dbus.service.method(_interface)
2023
1249
def StartChecker(self):
2024
1250
"D-Bus method"
2025
1251
self.start_checker()
2026
1252
2027
1253
# Disable - method
2028
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2029
1254
@dbus.service.method(_interface)
2030
1255
def Disable(self):
2031
1256
"D-Bus method"
2032
1257
self.disable()
2033
1258
2034
1259
# StopChecker - method
2035
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2036
1260
@dbus.service.method(_interface)
2037
1261
def StopChecker(self):
2038
1262
self.stop_checker()
2039
2040
# Properties
2041
1263
1264
## Properties
1265
2042
1266
# ApprovalPending - property
2043
1267
@dbus_service_property(_interface, signature="b", access="read")
2044
1268
def ApprovalPending_dbus_property(self):
2045
1269
return dbus.Boolean(bool(self.approvals_pending))
2046
1270
2047
1271
# ApprovedByDefault - property
2048
@dbus_service_property(_interface,
2049
signature="b",
1272
@dbus_service_property(_interface, signature="b",
2050
1273
access="readwrite")
2051
1274
def ApprovedByDefault_dbus_property(self, value=None):
2052
1275
if value is None: # get
2053
1276
return dbus.Boolean(self.approved_by_default)
2054
1277
self.approved_by_default = bool(value)
2055
1278
2056
1279
# ApprovalDelay - property
2057
@dbus_service_property(_interface,
2058
signature="t",
1280
@dbus_service_property(_interface, signature="t",
2059
1281
access="readwrite")
2060
1282
def ApprovalDelay_dbus_property(self, value=None):
2061
1283
if value is None: # get
2062
return dbus.UInt64(self.approval_delay.total_seconds()
2063
* 1000)
1284
return dbus.UInt64(self.approval_delay_milliseconds())
2064
1285
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2065
1286
2066
1287
# ApprovalDuration - property
2067
@dbus_service_property(_interface,
2068
signature="t",
1288
@dbus_service_property(_interface, signature="t",
2069
1289
access="readwrite")
2070
1290
def ApprovalDuration_dbus_property(self, value=None):
2071
1291
if value is None: # get
2072
return dbus.UInt64(self.approval_duration.total_seconds()
2073
* 1000)
1292
return dbus.UInt64(timedelta_to_milliseconds(
1293
self.approval_duration))
2074
1294
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2075
1295
2076
1296
# Name - property
2077
@dbus_annotations(
2078
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2079
1297
@dbus_service_property(_interface, signature="s", access="read")
2080
1298
def Name_dbus_property(self):
2081
1299
return dbus.String(self.name)
2082
2083
# KeyID - property
2084
@dbus_annotations(
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2086
@dbus_service_property(_interface, signature="s", access="read")
2087
def KeyID_dbus_property(self):
2088
return dbus.String(self.key_id)
2089
1300
2090
1301
# Fingerprint - property
2091
@dbus_annotations(
2092
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2093
1302
@dbus_service_property(_interface, signature="s", access="read")
2094
1303
def Fingerprint_dbus_property(self):
2095
1304
return dbus.String(self.fingerprint)
2096
1305
2097
1306
# Host - property
2098
@dbus_service_property(_interface,
2099
signature="s",
1307
@dbus_service_property(_interface, signature="s",
2100
1308
access="readwrite")
2101
1309
def Host_dbus_property(self, value=None):
2102
1310
if value is None: # get
2103
1311
return dbus.String(self.host)
2104
self.host = str(value)
2105
1312
self.host = unicode(value)
1313
2106
1314
# Created - property
2107
@dbus_annotations(
2108
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2109
1315
@dbus_service_property(_interface, signature="s", access="read")
2110
1316
def Created_dbus_property(self):
2111
1317
return datetime_to_dbus(self.created)
2112
1318
2113
1319
# LastEnabled - property
2114
1320
@dbus_service_property(_interface, signature="s", access="read")
2115
1321
def LastEnabled_dbus_property(self):
2116
1322
return datetime_to_dbus(self.last_enabled)
2117
1323
2118
1324
# Enabled - property
2119
@dbus_service_property(_interface,
2120
signature="b",
1325
@dbus_service_property(_interface, signature="b",
2121
1326
access="readwrite")
2122
1327
def Enabled_dbus_property(self, value=None):
2123
1328
if value is None: # get
2126
1331
self.enable()
2127
1332
else:
2128
1333
self.disable()
2129
1334
2130
1335
# LastCheckedOK - property
2131
@dbus_service_property(_interface,
2132
signature="s",
1336
@dbus_service_property(_interface, signature="s",
2133
1337
access="readwrite")
2134
1338
def LastCheckedOK_dbus_property(self, value=None):
2135
1339
if value is not None:
2136
1340
self.checked_ok()
2137
1341
return
2138
1342
return datetime_to_dbus(self.last_checked_ok)
2139
2140
# LastCheckerStatus - property
2141
@dbus_service_property(_interface, signature="n", access="read")
2142
def LastCheckerStatus_dbus_property(self):
2143
return dbus.Int16(self.last_checker_status)
2144
1343
2145
1344
# Expires - property
2146
1345
@dbus_service_property(_interface, signature="s", access="read")
2147
1346
def Expires_dbus_property(self):
2148
1347
return datetime_to_dbus(self.expires)
2149
1348
2150
1349
# LastApprovalRequest - property
2151
1350
@dbus_service_property(_interface, signature="s", access="read")
2152
1351
def LastApprovalRequest_dbus_property(self):
2153
1352
return datetime_to_dbus(self.last_approval_request)
2154
1353
2155
1354
# Timeout - property
2156
@dbus_service_property(_interface,
2157
signature="t",
1355
@dbus_service_property(_interface, signature="t",
2158
1356
access="readwrite")
2159
1357
def Timeout_dbus_property(self, value=None):
2160
1358
if value is None: # get
2161
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2162
old_timeout = self.timeout
1359
return dbus.UInt64(self.timeout_milliseconds())
2163
1360
self.timeout = datetime.timedelta(0, 0, 0, value)
2164
# Reschedule disabling
2165
if self.enabled:
2166
now = datetime.datetime.utcnow()
2167
self.expires += self.timeout - old_timeout
2168
if self.expires <= now:
2169
# The timeout has passed
2170
self.disable()
2171
else:
2172
if (getattr(self, "disable_initiator_tag", None)
2173
is None):
2174
return
2175
GLib.source_remove(self.disable_initiator_tag)
2176
self.disable_initiator_tag = GLib.timeout_add(
2177
int((self.expires - now).total_seconds() * 1000),
2178
self.disable)
2179
1361
if getattr(self, "disable_initiator_tag", None) is None:
1362
return
1363
# Reschedule timeout
1364
gobject.source_remove(self.disable_initiator_tag)
1365
self.disable_initiator_tag = None
1366
self.expires = None
1367
time_to_die = timedelta_to_milliseconds((self
1368
.last_checked_ok
1369
+ self.timeout)
1370
- datetime.datetime
1371
.utcnow())
1372
if time_to_die <= 0:
1373
# The timeout has passed
1374
self.disable()
1375
else:
1376
self.expires = (datetime.datetime.utcnow()
1377
+ datetime.timedelta(milliseconds =
1378
time_to_die))
1379
self.disable_initiator_tag = (gobject.timeout_add
1380
(time_to_die, self.disable))
1381
2180
1382
# ExtendedTimeout - property
2181
@dbus_service_property(_interface,
2182
signature="t",
1383
@dbus_service_property(_interface, signature="t",
2183
1384
access="readwrite")
2184
1385
def ExtendedTimeout_dbus_property(self, value=None):
2185
1386
if value is None: # get
2186
return dbus.UInt64(self.extended_timeout.total_seconds()
2187
* 1000)
1387
return dbus.UInt64(self.extended_timeout_milliseconds())
2188
1388
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2189
1389
2190
1390
# Interval - property
2191
@dbus_service_property(_interface,
2192
signature="t",
1391
@dbus_service_property(_interface, signature="t",
2193
1392
access="readwrite")
2194
1393
def Interval_dbus_property(self, value=None):
2195
1394
if value is None: # get
2196
return dbus.UInt64(self.interval.total_seconds() * 1000)
1395
return dbus.UInt64(self.interval_milliseconds())
2197
1396
self.interval = datetime.timedelta(0, 0, 0, value)
2198
1397
if getattr(self, "checker_initiator_tag", None) is None:
2199
1398
return
2200
1399
if self.enabled:
2201
1400
# Reschedule checker run
2202
GLib.source_remove(self.checker_initiator_tag)
2203
self.checker_initiator_tag = GLib.timeout_add(
2204
value, self.start_checker)
2205
self.start_checker() # Start one now, too
2206
1401
gobject.source_remove(self.checker_initiator_tag)
1402
self.checker_initiator_tag = (gobject.timeout_add
1403
(value, self.start_checker))
1404
self.start_checker() # Start one now, too
1405
2207
1406
# Checker - property
2208
@dbus_service_property(_interface,
2209
signature="s",
1407
@dbus_service_property(_interface, signature="s",
2210
1408
access="readwrite")
2211
1409
def Checker_dbus_property(self, value=None):
2212
1410
if value is None: # get
2213
1411
return dbus.String(self.checker_command)
2214
self.checker_command = str(value)
2215
1412
self.checker_command = unicode(value)
1413
2216
1414
# CheckerRunning - property
2217
@dbus_service_property(_interface,
2218
signature="b",
1415
@dbus_service_property(_interface, signature="b",
2219
1416
access="readwrite")
2220
1417
def CheckerRunning_dbus_property(self, value=None):
2221
1418
if value is None: # get
2224
1421
self.start_checker()
2225
1422
else:
2226
1423
self.stop_checker()
2227
1424
2228
1425
# ObjectPath - property
2229
@dbus_annotations(
2230
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2231
"org.freedesktop.DBus.Deprecated": "true"})
2232
1426
@dbus_service_property(_interface, signature="o", access="read")
2233
1427
def ObjectPath_dbus_property(self):
2234
return self.dbus_object_path # is already a dbus.ObjectPath
2235
1428
return self.dbus_object_path # is already a dbus.ObjectPath
1429
2236
1430
# Secret = property
2237
@dbus_annotations(
2238
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2239
"invalidates"})
2240
@dbus_service_property(_interface,
2241
signature="ay",
2242
access="write",
2243
byte_arrays=True)
1431
@dbus_service_property(_interface, signature="ay",
1432
access="write", byte_arrays=True)
2244
1433
def Secret_dbus_property(self, value):
2245
self.secret = bytes(value)
2246
1434
self.secret = str(value)
1435
2247
1436
del _interface
2248
1437
2249
1438
2250
class ProxyClient:
2251
def __init__(self, child_pipe, key_id, fpr, address):
1439
class ProxyClient(object):
1440
def __init__(self, child_pipe, fpr, address):
2252
1441
self._pipe = child_pipe
2253
self._pipe.send(('init', key_id, fpr, address))
1442
self._pipe.send(('init', fpr, address))
2254
1443
if not self._pipe.recv():
2255
raise KeyError(key_id or fpr)
2256
1444
raise KeyError()
1445
2257
1446
def __getattribute__(self, name):
2258
1447
if name == '_pipe':
2259
1448
return super(ProxyClient, self).__getattribute__(name)
2262
1451
if data[0] == 'data':
2263
1452
return data[1]
2264
1453
if data[0] == 'function':
2265
2266
1454
def func(*args, **kwargs):
2267
1455
self._pipe.send(('funcall', name, args, kwargs))
2268
1456
return self._pipe.recv()[1]
2269
2270
1457
return func
2271
1458
2272
1459
def __setattr__(self, name, value):
2273
1460
if name == '_pipe':
2274
1461
return super(ProxyClient, self).__setattr__(name, value)
2275
1462
self._pipe.send(('setattr', name, value))
2276
1463
2277
1464
1465
class ClientDBusTransitional(ClientDBus):
1466
__metaclass__ = AlternateDBusNamesMetaclass
1467
1468
2278
1469
class ClientHandler(socketserver.BaseRequestHandler, object):
2279
1470
"""A class to handle client connections.
2280
1471
2281
1472
Instantiated once for each connection to handle it.
2282
1473
Note: This will run in its own forked process."""
2283
1474
2284
1475
def handle(self):
2285
1476
with contextlib.closing(self.server.child_pipe) as child_pipe:
2286
1477
logger.info("TCP connection from: %s",
2287
str(self.client_address))
1478
unicode(self.client_address))
2288
1479
logger.debug("Pipe FD: %d",
2289
1480
self.server.child_pipe.fileno())
2290
2291
session = gnutls.ClientSession(self.request)
2292
2293
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2294
# "+AES-256-CBC", "+SHA1",
2295
# "+COMP-NULL", "+CTYPE-OPENPGP",
2296
# "+DHE-DSS"))
1481
1482
session = (gnutls.connection
1483
.ClientSession(self.request,
1484
gnutls.connection
1485
.X509Credentials()))
1486
1487
# Note: gnutls.connection.X509Credentials is really a
1488
# generic GnuTLS certificate credentials object so long as
1489
# no X.509 keys are added to it. Therefore, we can use it
1490
# here despite using OpenPGP certificates.
1491
1492
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1493
# "+AES-256-CBC", "+SHA1",
1494
# "+COMP-NULL", "+CTYPE-OPENPGP",
1495
# "+DHE-DSS"))
2297
1496
# Use a fallback default, since this MUST be set.
2298
1497
priority = self.server.gnutls_priority
2299
1498
if priority is None:
2300
1499
priority = "NORMAL"
2301
gnutls.priority_set_direct(session._c_object,
2302
priority.encode("utf-8"),
2303
None)
2304
1500
(gnutls.library.functions
1501
.gnutls_priority_set_direct(session._c_object,
1502
priority, None))
1503
2305
1504
# Start communication using the Mandos protocol
2306
1505
# Get protocol number
2307
1506
line = self.request.makefile().readline()
2308
1507
logger.debug("Protocol version: %r", line)
2309
1508
try:
2310
1509
if int(line.strip().split()[0]) > 1:
2311
raise RuntimeError(line)
1510
raise RuntimeError
2312
1511
except (ValueError, IndexError, RuntimeError) as error:
2313
1512
logger.error("Unknown protocol version: %s", error)
2314
1513
return
2315
1514
2316
1515
# Start GnuTLS connection
2317
1516
try:
2318
1517
session.handshake()
2319
except gnutls.Error as error:
1518
except gnutls.errors.GNUTLSError as error:
2320
1519
logger.warning("Handshake failed: %s", error)
2321
1520
# Do not run session.bye() here: the session is not
2322
1521
# established. Just abandon the request.
2323
1522
return
2324
1523
logger.debug("Handshake succeeded")
2325
1524
2326
1525
approval_required = False
2327
1526
try:
2328
if gnutls.has_rawpk:
2329
fpr = b""
2330
try:
2331
key_id = self.key_id(
2332
self.peer_certificate(session))
2333
except (TypeError, gnutls.Error) as error:
2334
logger.warning("Bad certificate: %s", error)
2335
return
2336
logger.debug("Key ID: %s", key_id)
2337
2338
else:
2339
key_id = b""
2340
try:
2341
fpr = self.fingerprint(
2342
self.peer_certificate(session))
2343
except (TypeError, gnutls.Error) as error:
2344
logger.warning("Bad certificate: %s", error)
2345
return
2346
logger.debug("Fingerprint: %s", fpr)
2347
2348
try:
2349
client = ProxyClient(child_pipe, key_id, fpr,
1527
try:
1528
fpr = self.fingerprint(self.peer_certificate
1529
(session))
1530
except (TypeError,
1531
gnutls.errors.GNUTLSError) as error:
1532
logger.warning("Bad certificate: %s", error)
1533
return
1534
logger.debug("Fingerprint: %s", fpr)
1535
1536
try:
1537
client = ProxyClient(child_pipe, fpr,
2350
1538
self.client_address)
2351
1539
except KeyError:
2352
1540
return
2353
1541
1542
if self.server.use_dbus:
1543
# Emit D-Bus signal
1544
client.NewRequest(str(self.client_address))
1545
2354
1546
if client.approval_delay:
2355
1547
delay = client.approval_delay
2356
1548
client.approvals_pending += 1
2357
1549
approval_required = True
2358
1550
2359
1551
while True:
2360
1552
if not client.enabled:
2361
1553
logger.info("Client %s is disabled",
2362
client.name)
1554
client.name)
2363
1555
if self.server.use_dbus:
2364
1556
# Emit D-Bus signal
2365
1557
client.Rejected("Disabled")
2366
1558
return
2367
1559
2368
1560
if client.approved or not client.approval_delay:
2369
# We are approved or approval is disabled
1561
#We are approved or approval is disabled
2370
1562
break
2371
1563
elif client.approved is None:
2372
1564
logger.info("Client %s needs approval",
2374
1566
if self.server.use_dbus:
2375
1567
# Emit D-Bus signal
2376
1568
client.NeedApproval(
2377
client.approval_delay.total_seconds()
2378
* 1000, client.approved_by_default)
1569
client.approval_delay_milliseconds(),
1570
client.approved_by_default)
2379
1571
else:
2380
1572
logger.warning("Client %s was not approved",
2381
1573
client.name)
2383
1575
# Emit D-Bus signal
2384
1576
client.Rejected("Denied")
2385
1577
return
2386
2387
# wait until timeout or approved
1578
1579
#wait until timeout or approved
2388
1580
time = datetime.datetime.now()
2389
1581
client.changedstate.acquire()
2390
client.changedstate.wait(delay.total_seconds())
1582
(client.changedstate.wait
1583
(float(client.timedelta_to_milliseconds(delay)
1584
/ 1000)))
2391
1585
client.changedstate.release()
2392
1586
time2 = datetime.datetime.now()
2393
1587
if (time2 - time) >= delay:
2403
1597
break
2404
1598
else:
2405
1599
delay -= time2 - time
2406
2407
try:
2408
session.send(client.secret)
2409
except gnutls.Error as error:
2410
logger.warning("gnutls send failed",
2411
exc_info=error)
2412
return
2413
1600
1601
sent_size = 0
1602
while sent_size < len(client.secret):
1603
try:
1604
sent = session.send(client.secret[sent_size:])
1605
except gnutls.errors.GNUTLSError as error:
1606
logger.warning("gnutls send failed")
1607
return
1608
logger.debug("Sent: %d, remaining: %d",
1609
sent, len(client.secret)
1610
- (sent_size + sent))
1611
sent_size += sent
1612
2414
1613
logger.info("Sending secret to %s", client.name)
2415
1614
# bump the timeout using extended_timeout
2416
client.bump_timeout(client.extended_timeout)
1615
client.checked_ok(client.extended_timeout)
2417
1616
if self.server.use_dbus:
2418
1617
# Emit D-Bus signal
2419
1618
client.GotSecret()
2420
1619
2421
1620
finally:
2422
1621
if approval_required:
2423
1622
client.approvals_pending -= 1
2424
1623
try:
2425
1624
session.bye()
2426
except gnutls.Error as error:
2427
logger.warning("GnuTLS bye failed",
2428
exc_info=error)
2429
1625
except gnutls.errors.GNUTLSError as error:
1626
logger.warning("GnuTLS bye failed")
1627
2430
1628
@staticmethod
2431
1629
def peer_certificate(session):
2432
"Return the peer's certificate as a bytestring"
2433
try:
2434
cert_type = gnutls.certificate_type_get2(session._c_object,
2435
gnutls.CTYPE_PEERS)
2436
except AttributeError:
2437
cert_type = gnutls.certificate_type_get(session._c_object)
2438
if gnutls.has_rawpk:
2439
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2440
else:
2441
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2442
# If not a valid certificate type...
2443
if cert_type not in valid_cert_types:
2444
logger.info("Cert type %r not in %r", cert_type,
2445
valid_cert_types)
2446
# ...return invalid data
2447
return b""
1630
"Return the peer's OpenPGP certificate as a bytestring"
1631
# If not an OpenPGP certificate...
1632
if (gnutls.library.functions
1633
.gnutls_certificate_type_get(session._c_object)
1634
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1635
# ...do the normal thing
1636
return session.peer_certificate
2448
1637
list_size = ctypes.c_uint(1)
2449
cert_list = (gnutls.certificate_get_peers
1638
cert_list = (gnutls.library.functions
1639
.gnutls_certificate_get_peers
2450
1640
(session._c_object, ctypes.byref(list_size)))
2451
1641
if not bool(cert_list) and list_size.value != 0:
2452
raise gnutls.Error("error getting peer certificate")
1642
raise gnutls.errors.GNUTLSError("error getting peer"
1643
" certificate")
2453
1644
if list_size.value == 0:
2454
1645
return None
2455
1646
cert = cert_list[0]
2456
1647
return ctypes.string_at(cert.data, cert.size)
2457
2458
@staticmethod
2459
def key_id(certificate):
2460
"Convert a certificate bytestring to a hexdigit key ID"
2461
# New GnuTLS "datum" with the public key
2462
datum = gnutls.datum_t(
2463
ctypes.cast(ctypes.c_char_p(certificate),
2464
ctypes.POINTER(ctypes.c_ubyte)),
2465
ctypes.c_uint(len(certificate)))
2466
# XXX all these need to be created in the gnutls "module"
2467
# New empty GnuTLS certificate
2468
pubkey = gnutls.pubkey_t()
2469
gnutls.pubkey_init(ctypes.byref(pubkey))
2470
# Import the raw public key into the certificate
2471
gnutls.pubkey_import(pubkey,
2472
ctypes.byref(datum),
2473
gnutls.X509_FMT_DER)
2474
# New buffer for the key ID
2475
buf = ctypes.create_string_buffer(32)
2476
buf_len = ctypes.c_size_t(len(buf))
2477
# Get the key ID from the raw public key into the buffer
2478
gnutls.pubkey_get_key_id(
2479
pubkey,
2480
gnutls.KEYID_USE_SHA256,
2481
ctypes.cast(ctypes.byref(buf),
2482
ctypes.POINTER(ctypes.c_ubyte)),
2483
ctypes.byref(buf_len))
2484
# Deinit the certificate
2485
gnutls.pubkey_deinit(pubkey)
2486
2487
# Convert the buffer to a Python bytestring
2488
key_id = ctypes.string_at(buf, buf_len.value)
2489
# Convert the bytestring to hexadecimal notation
2490
hex_key_id = binascii.hexlify(key_id).upper()
2491
return hex_key_id
2492
1648
2493
1649
@staticmethod
2494
1650
def fingerprint(openpgp):
2495
1651
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2496
1652
# New GnuTLS "datum" with the OpenPGP public key
2497
datum = gnutls.datum_t(
2498
ctypes.cast(ctypes.c_char_p(openpgp),
2499
ctypes.POINTER(ctypes.c_ubyte)),
2500
ctypes.c_uint(len(openpgp)))
1653
datum = (gnutls.library.types
1654
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1655
ctypes.POINTER
1656
(ctypes.c_ubyte)),
1657
ctypes.c_uint(len(openpgp))))
2501
1658
# New empty GnuTLS certificate
2502
crt = gnutls.openpgp_crt_t()
2503
gnutls.openpgp_crt_init(ctypes.byref(crt))
1659
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1660
(gnutls.library.functions
1661
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2504
1662
# Import the OpenPGP public key into the certificate
2505
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2506
gnutls.OPENPGP_FMT_RAW)
1663
(gnutls.library.functions
1664
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1665
gnutls.library.constants
1666
.GNUTLS_OPENPGP_FMT_RAW))
2507
1667
# Verify the self signature in the key
2508
1668
crtverify = ctypes.c_uint()
2509
gnutls.openpgp_crt_verify_self(crt, 0,
2510
ctypes.byref(crtverify))
1669
(gnutls.library.functions
1670
.gnutls_openpgp_crt_verify_self(crt, 0,
1671
ctypes.byref(crtverify)))
2511
1672
if crtverify.value != 0:
2512
gnutls.openpgp_crt_deinit(crt)
2513
raise gnutls.CertificateSecurityError(code
2514
=crtverify.value)
1673
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1674
raise (gnutls.errors.CertificateSecurityError
1675
("Verify failed"))
2515
1676
# New buffer for the fingerprint
2516
1677
buf = ctypes.create_string_buffer(20)
2517
1678
buf_len = ctypes.c_size_t()
2518
1679
# Get the fingerprint from the certificate into the buffer
2519
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2520
ctypes.byref(buf_len))
1680
(gnutls.library.functions
1681
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1682
ctypes.byref(buf_len)))
2521
1683
# Deinit the certificate
2522
gnutls.openpgp_crt_deinit(crt)
1684
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2523
1685
# Convert the buffer to a Python bytestring
2524
1686
fpr = ctypes.string_at(buf, buf_len.value)
2525
1687
# Convert the bytestring to hexadecimal notation
2527
1689
return hex_fpr
2528
1690
2529
1691
2530
class MultiprocessingMixIn:
1692
class MultiprocessingMixIn(object):
2531
1693
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2532
2533
1694
def sub_process_main(self, request, address):
2534
1695
try:
2535
1696
self.finish_request(request, address)
2536
1697
except Exception:
2537
1698
self.handle_error(request, address)
2538
1699
self.close_request(request)
2539
1700
2540
1701
def process_request(self, request, address):
2541
1702
"""Start a new process to process the request."""
2542
proc = multiprocessing.Process(target=self.sub_process_main,
2543
args=(request, address))
1703
proc = multiprocessing.Process(target = self.sub_process_main,
1704
args = (request,
1705
address))
2544
1706
proc.start()
2545
1707
return proc
2546
1708
2547
1709
2548
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1710
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2549
1711
""" adds a pipe to the MixIn """
2550
2551
1712
def process_request(self, request, client_address):
2552
1713
"""Overrides and wraps the original process_request().
2553
1714
2554
1715
This function creates a new pipe in self.pipe
2555
1716
"""
2556
1717
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2557
1718
2558
1719
proc = MultiprocessingMixIn.process_request(self, request,
2559
1720
client_address)
2560
1721
self.child_pipe.close()
2561
1722
self.add_pipe(parent_pipe, proc)
2562
1723
2563
1724
def add_pipe(self, parent_pipe, proc):
2564
1725
"""Dummy function; override as necessary"""
2565
raise NotImplementedError()
1726
raise NotImplementedError
2566
1727
2567
1728
2568
1729
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2569
socketserver.TCPServer):
1730
socketserver.TCPServer, object):
2570
1731
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2571
1732
2572
1733
Attributes:
2573
1734
enabled: Boolean; whether this server is activated yet
2574
1735
interface: None or a network interface name (string)
2575
1736
use_ipv6: Boolean; to use IPv6 or not
2576
1737
"""
2577
2578
1738
def __init__(self, server_address, RequestHandlerClass,
2579
interface=None,
2580
use_ipv6=True,
2581
socketfd=None):
2582
"""If socketfd is set, use that file descriptor instead of
2583
creating a new one with socket.socket().
2584
"""
1739
interface=None, use_ipv6=True):
2585
1740
self.interface = interface
2586
1741
if use_ipv6:
2587
1742
self.address_family = socket.AF_INET6
2588
if socketfd is not None:
2589
# Save the file descriptor
2590
self.socketfd = socketfd
2591
# Save the original socket.socket() function
2592
self.socket_socket = socket.socket
2593
2594
# To implement --socket, we monkey patch socket.socket.
2595
#
2596
# (When socketserver.TCPServer is a new-style class, we
2597
# could make self.socket into a property instead of monkey
2598
# patching socket.socket.)
2599
#
2600
# Create a one-time-only replacement for socket.socket()
2601
@functools.wraps(socket.socket)
2602
def socket_wrapper(*args, **kwargs):
2603
# Restore original function so subsequent calls are
2604
# not affected.
2605
socket.socket = self.socket_socket
2606
del self.socket_socket
2607
# This time only, return a new socket object from the
2608
# saved file descriptor.
2609
return socket.fromfd(self.socketfd, *args, **kwargs)
2610
# Replace socket.socket() function with wrapper
2611
socket.socket = socket_wrapper
2612
# The socketserver.TCPServer.__init__ will call
2613
# socket.socket(), which might be our replacement,
2614
# socket_wrapper(), if socketfd was set.
2615
1743
socketserver.TCPServer.__init__(self, server_address,
2616
1744
RequestHandlerClass)
2617
2618
1745
def server_bind(self):
2619
1746
"""This overrides the normal server_bind() function
2620
1747
to bind to an interface if one was specified, and also NOT to
2621
1748
bind to an address or port if they were not specified."""
2622
global SO_BINDTODEVICE
2623
1749
if self.interface is not None:
2624
1750
if SO_BINDTODEVICE is None:
2625
# Fall back to a hard-coded value which seems to be
2626
# common enough.
2627
logger.warning("SO_BINDTODEVICE not found, trying 25")
2628
SO_BINDTODEVICE = 25
2629
try:
2630
self.socket.setsockopt(
2631
socket.SOL_SOCKET, SO_BINDTODEVICE,
2632
(self.interface + "\0").encode("utf-8"))
2633
except socket.error as error:
2634
if error.errno == errno.EPERM:
2635
logger.error("No permission to bind to"
2636
" interface %s", self.interface)
2637
elif error.errno == errno.ENOPROTOOPT:
2638
logger.error("SO_BINDTODEVICE not available;"
2639
" cannot bind to interface %s",
2640
self.interface)
2641
elif error.errno == errno.ENODEV:
2642
logger.error("Interface %s does not exist,"
2643
" cannot bind", self.interface)
2644
else:
2645
raise
1751
logger.error("SO_BINDTODEVICE does not exist;"
1752
" cannot bind to interface %s",
1753
self.interface)
1754
else:
1755
try:
1756
self.socket.setsockopt(socket.SOL_SOCKET,
1757
SO_BINDTODEVICE,
1758
str(self.interface
1759
+ '\0'))
1760
except socket.error as error:
1761
if error[0] == errno.EPERM:
1762
logger.error("No permission to"
1763
" bind to interface %s",
1764
self.interface)
1765
elif error[0] == errno.ENOPROTOOPT:
1766
logger.error("SO_BINDTODEVICE not available;"
1767
" cannot bind to interface %s",
1768
self.interface)
1769
else:
1770
raise
2646
1771
# Only bind(2) the socket if we really need to.
2647
1772
if self.server_address[0] or self.server_address[1]:
2648
if self.server_address[1]:
2649
self.allow_reuse_address = True
2650
1773
if not self.server_address[0]:
2651
1774
if self.address_family == socket.AF_INET6:
2652
any_address = "::" # in6addr_any
1775
any_address = "::" # in6addr_any
2653
1776
else:
2654
any_address = "0.0.0.0" # INADDR_ANY
1777
any_address = socket.INADDR_ANY
2655
1778
self.server_address = (any_address,
2656
1779
self.server_address[1])
2657
1780
elif not self.server_address[1]:
2658
self.server_address = (self.server_address[0], 0)
1781
self.server_address = (self.server_address[0],
1782
0)
2659
1783
# if self.interface:
2660
1784
# self.server_address = (self.server_address[0],
2661
1785
# 0, # port
2667
1791
2668
1792
class MandosServer(IPv6_TCPServer):
2669
1793
"""Mandos server.
2670
1794
2671
1795
Attributes:
2672
1796
clients: set of Client objects
2673
1797
gnutls_priority GnuTLS priority string
2674
1798
use_dbus: Boolean; to emit D-Bus signals or not
2675
2676
Assumes a GLib.MainLoop event loop.
1799
1800
Assumes a gobject.MainLoop event loop.
2677
1801
"""
2678
2679
1802
def __init__(self, server_address, RequestHandlerClass,
2680
interface=None,
2681
use_ipv6=True,
2682
clients=None,
2683
gnutls_priority=None,
2684
use_dbus=True,
2685
socketfd=None):
1803
interface=None, use_ipv6=True, clients=None,
1804
gnutls_priority=None, use_dbus=True):
2686
1805
self.enabled = False
2687
1806
self.clients = clients
2688
1807
if self.clients is None:
2691
1810
self.gnutls_priority = gnutls_priority
2692
1811
IPv6_TCPServer.__init__(self, server_address,
2693
1812
RequestHandlerClass,
2694
interface=interface,
2695
use_ipv6=use_ipv6,
2696
socketfd=socketfd)
2697
1813
interface = interface,
1814
use_ipv6 = use_ipv6)
2698
1815
def server_activate(self):
2699
1816
if self.enabled:
2700
1817
return socketserver.TCPServer.server_activate(self)
2701
1818
2702
1819
def enable(self):
2703
1820
self.enabled = True
2704
1821
2705
1822
def add_pipe(self, parent_pipe, proc):
2706
1823
# Call "handle_ipc" for both data and EOF events
2707
GLib.io_add_watch(
2708
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2709
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2710
functools.partial(self.handle_ipc,
2711
parent_pipe=parent_pipe,
2712
proc=proc))
2713
2714
def handle_ipc(self, source, condition,
2715
parent_pipe=None,
2716
proc=None,
2717
client_object=None):
1824
gobject.io_add_watch(parent_pipe.fileno(),
1825
gobject.IO_IN | gobject.IO_HUP,
1826
functools.partial(self.handle_ipc,
1827
parent_pipe =
1828
parent_pipe,
1829
proc = proc))
1830
1831
def handle_ipc(self, source, condition, parent_pipe=None,
1832
proc = None, client_object=None):
1833
condition_names = {
1834
gobject.IO_IN: "IN", # There is data to read.
1835
gobject.IO_OUT: "OUT", # Data can be written (without
1836
# blocking).
1837
gobject.IO_PRI: "PRI", # There is urgent data to read.
1838
gobject.IO_ERR: "ERR", # Error condition.
1839
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1840
# broken, usually for pipes and
1841
# sockets).
1842
}
1843
conditions_string = ' | '.join(name
1844
for cond, name in
1845
condition_names.iteritems()
1846
if cond & condition)
2718
1847
# error, or the other end of multiprocessing.Pipe has closed
2719
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1848
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2720
1849
# Wait for other process to exit
2721
1850
proc.join()
2722
1851
return False
2723
1852
2724
1853
# Read a request from the child
2725
1854
request = parent_pipe.recv()
2726
1855
command = request[0]
2727
1856
2728
1857
if command == 'init':
2729
key_id = request[1].decode("ascii")
2730
fpr = request[2].decode("ascii")
2731
address = request[3]
2732
2733
for c in self.clients.values():
2734
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2735
"27AE41E4649B934CA495991B7852B855"):
2736
continue
2737
if key_id and c.key_id == key_id:
2738
client = c
2739
break
2740
if fpr and c.fingerprint == fpr:
1858
fpr = request[1]
1859
address = request[2]
1860
1861
for c in self.clients.itervalues():
1862
if c.fingerprint == fpr:
2741
1863
client = c
2742
1864
break
2743
1865
else:
2744
logger.info("Client not found for key ID: %s, address"
2745
": %s", key_id or fpr, address)
1866
logger.info("Client not found for fingerprint: %s, ad"
1867
"dress: %s", fpr, address)
2746
1868
if self.use_dbus:
2747
1869
# Emit D-Bus signal
2748
mandos_dbus_service.ClientNotFound(key_id or fpr,
1870
mandos_dbus_service.ClientNotFound(fpr,
2749
1871
address[0])
2750
1872
parent_pipe.send(False)
2751
1873
return False
2752
2753
GLib.io_add_watch(
2754
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2755
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2756
functools.partial(self.handle_ipc,
2757
parent_pipe=parent_pipe,
2758
proc=proc,
2759
client_object=client))
1874
1875
gobject.io_add_watch(parent_pipe.fileno(),
1876
gobject.IO_IN | gobject.IO_HUP,
1877
functools.partial(self.handle_ipc,
1878
parent_pipe =
1879
parent_pipe,
1880
proc = proc,
1881
client_object =
1882
client))
2760
1883
parent_pipe.send(True)
2761
1884
# remove the old hook in favor of the new above hook on
2762
1885
# same fileno
2765
1888
funcname = request[1]
2766
1889
args = request[2]
2767
1890
kwargs = request[3]
2768
1891
2769
1892
parent_pipe.send(('data', getattr(client_object,
2770
1893
funcname)(*args,
2771
**kwargs)))
2772
1894
**kwargs)))
1895
2773
1896
if command == 'getattr':
2774
1897
attrname = request[1]
2775
if isinstance(client_object.__getattribute__(attrname),
2776
collections.abc.Callable):
2777
parent_pipe.send(('function', ))
1898
if callable(client_object.__getattribute__(attrname)):
1899
parent_pipe.send(('function',))
2778
1900
else:
2779
parent_pipe.send((
2780
'data', client_object.__getattribute__(attrname)))
2781
1901
parent_pipe.send(('data', client_object
1902
.__getattribute__(attrname)))
1903
2782
1904
if command == 'setattr':
2783
1905
attrname = request[1]
2784
1906
value = request[2]
2785
1907
setattr(client_object, attrname, value)
2786
1908
2787
1909
return True
2788
1910
2789
1911
2790
def rfc3339_duration_to_delta(duration):
2791
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2792
2793
>>> timedelta = datetime.timedelta
2794
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2795
True
2796
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2797
True
2798
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2799
True
2800
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2801
True
2802
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2803
True
2804
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2805
True
2806
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2807
True
2808
>>> del timedelta
2809
"""
2810
2811
# Parsing an RFC 3339 duration with regular expressions is not
2812
# possible - there would have to be multiple places for the same
2813
# values, like seconds. The current code, while more esoteric, is
2814
# cleaner without depending on a parsing library. If Python had a
2815
# built-in library for parsing we would use it, but we'd like to
2816
# avoid excessive use of external libraries.
2817
2818
# New type for defining tokens, syntax, and semantics all-in-one
2819
Token = collections.namedtuple("Token", (
2820
"regexp", # To match token; if "value" is not None, must have
2821
# a "group" containing digits
2822
"value", # datetime.timedelta or None
2823
"followers")) # Tokens valid after this token
2824
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2825
# the "duration" ABNF definition in RFC 3339, Appendix A.
2826
token_end = Token(re.compile(r"$"), None, frozenset())
2827
token_second = Token(re.compile(r"(\d+)S"),
2828
datetime.timedelta(seconds=1),
2829
frozenset((token_end, )))
2830
token_minute = Token(re.compile(r"(\d+)M"),
2831
datetime.timedelta(minutes=1),
2832
frozenset((token_second, token_end)))
2833
token_hour = Token(re.compile(r"(\d+)H"),
2834
datetime.timedelta(hours=1),
2835
frozenset((token_minute, token_end)))
2836
token_time = Token(re.compile(r"T"),
2837
None,
2838
frozenset((token_hour, token_minute,
2839
token_second)))
2840
token_day = Token(re.compile(r"(\d+)D"),
2841
datetime.timedelta(days=1),
2842
frozenset((token_time, token_end)))
2843
token_month = Token(re.compile(r"(\d+)M"),
2844
datetime.timedelta(weeks=4),
2845
frozenset((token_day, token_end)))
2846
token_year = Token(re.compile(r"(\d+)Y"),
2847
datetime.timedelta(weeks=52),
2848
frozenset((token_month, token_end)))
2849
token_week = Token(re.compile(r"(\d+)W"),
2850
datetime.timedelta(weeks=1),
2851
frozenset((token_end, )))
2852
token_duration = Token(re.compile(r"P"), None,
2853
frozenset((token_year, token_month,
2854
token_day, token_time,
2855
token_week)))
2856
# Define starting values:
2857
# Value so far
2858
value = datetime.timedelta()
2859
found_token = None
2860
# Following valid tokens
2861
followers = frozenset((token_duration, ))
2862
# String left to parse
2863
s = duration
2864
# Loop until end token is found
2865
while found_token is not token_end:
2866
# Search for any currently valid tokens
2867
for token in followers:
2868
match = token.regexp.match(s)
2869
if match is not None:
2870
# Token found
2871
if token.value is not None:
2872
# Value found, parse digits
2873
factor = int(match.group(1), 10)
2874
# Add to value so far
2875
value += factor * token.value
2876
# Strip token from string
2877
s = token.regexp.sub("", s, 1)
2878
# Go to found token
2879
found_token = token
2880
# Set valid next tokens
2881
followers = found_token.followers
2882
break
2883
else:
2884
# No currently valid tokens were found
2885
raise ValueError("Invalid RFC 3339 duration: {!r}"
2886
.format(duration))
2887
# End token found
2888
return value
2889
2890
2891
1912
def string_to_delta(interval):
2892
1913
"""Parse a string and return a datetime.timedelta
2893
2894
>>> string_to_delta('7d') == datetime.timedelta(7)
2895
True
2896
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2897
True
2898
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2899
True
2900
>>> string_to_delta('24h') == datetime.timedelta(1)
2901
True
2902
>>> string_to_delta('1w') == datetime.timedelta(7)
2903
True
2904
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2905
True
1914
1915
>>> string_to_delta('7d')
1916
datetime.timedelta(7)
1917
>>> string_to_delta('60s')
1918
datetime.timedelta(0, 60)
1919
>>> string_to_delta('60m')
1920
datetime.timedelta(0, 3600)
1921
>>> string_to_delta('24h')
1922
datetime.timedelta(1)
1923
>>> string_to_delta('1w')
1924
datetime.timedelta(7)
1925
>>> string_to_delta('5m 30s')
1926
datetime.timedelta(0, 330)
2906
1927
"""
2907
2908
try:
2909
return rfc3339_duration_to_delta(interval)
2910
except ValueError:
2911
pass
2912
2913
1928
timevalue = datetime.timedelta(0)
2914
1929
for s in interval.split():
2915
1930
try:
2916
suffix = s[-1]
1931
suffix = unicode(s[-1])
2917
1932
value = int(s[:-1])
2918
1933
if suffix == "d":
2919
1934
delta = datetime.timedelta(value)
2926
1941
elif suffix == "w":
2927
1942
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2928
1943
else:
2929
raise ValueError("Unknown suffix {!r}".format(suffix))
2930
except IndexError as e:
1944
raise ValueError("Unknown suffix %r" % suffix)
1945
except (ValueError, IndexError) as e:
2931
1946
raise ValueError(*(e.args))
2932
1947
timevalue += delta
2933
1948
return timevalue
2934
1949
2935
1950
2936
def daemon(nochdir=False, noclose=False):
1951
def daemon(nochdir = False, noclose = False):
2937
1952
"""See daemon(3). Standard BSD Unix function.
2938
1953
2939
1954
This should really exist as os.daemon, but it doesn't (yet)."""
2940
1955
if os.fork():
2941
1956
sys.exit()
2946
1961
sys.exit()
2947
1962
if not noclose:
2948
1963
# Close all standard open file descriptors
2949
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1964
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2950
1965
if not stat.S_ISCHR(os.fstat(null).st_mode):
2951
1966
raise OSError(errno.ENODEV,
2952
"{} not a character device"
2953
.format(os.devnull))
1967
"%s not a character device"
1968
% os.path.devnull)
2954
1969
os.dup2(null, sys.stdin.fileno())
2955
1970
os.dup2(null, sys.stdout.fileno())
2956
1971
os.dup2(null, sys.stderr.fileno())
2959
1974
2960
1975
2961
1976
def main():
2962
1977
2963
1978
##################################################################
2964
1979
# Parsing of options, both command line and config file
2965
1980
2966
1981
parser = argparse.ArgumentParser()
2967
1982
parser.add_argument("-v", "--version", action="version",
2968
version="%(prog)s {}".format(version),
1983
version = "%%(prog)s %s" % version,
2969
1984
help="show version number and exit")
2970
1985
parser.add_argument("-i", "--interface", metavar="IF",
2971
1986
help="Bind to interface IF")
2977
1992
help="Run self-test")
2978
1993
parser.add_argument("--debug", action="store_true",
2979
1994
help="Debug mode; run in foreground and log"
2980
" to terminal", default=None)
1995
" to terminal")
2981
1996
parser.add_argument("--debuglevel", metavar="LEVEL",
2982
1997
help="Debug level for stdout output")
2983
1998
parser.add_argument("--priority", help="GnuTLS"
2990
2005
" files")
2991
2006
parser.add_argument("--no-dbus", action="store_false",
2992
2007
dest="use_dbus", help="Do not provide D-Bus"
2993
" system bus interface", default=None)
2008
" system bus interface")
2994
2009
parser.add_argument("--no-ipv6", action="store_false",
2995
dest="use_ipv6", help="Do not use IPv6",
2996
default=None)
2010
dest="use_ipv6", help="Do not use IPv6")
2997
2011
parser.add_argument("--no-restore", action="store_false",
2998
2012
dest="restore", help="Do not restore stored"
2999
" state", default=None)
3000
parser.add_argument("--socket", type=int,
3001
help="Specify a file descriptor to a network"
3002
" socket to use instead of creating one")
2013
" state")
3003
2014
parser.add_argument("--statedir", metavar="DIR",
3004
2015
help="Directory to save/restore state in")
3005
parser.add_argument("--foreground", action="store_true",
3006
help="Run in foreground", default=None)
3007
parser.add_argument("--no-zeroconf", action="store_false",
3008
dest="zeroconf", help="Do not use Zeroconf",
3009
default=None)
3010
2016
3011
2017
options = parser.parse_args()
3012
2018
2019
if options.check:
2020
import doctest
2021
doctest.testmod()
2022
sys.exit()
2023
3013
2024
# Default values for config file for server-global settings
3014
if gnutls.has_rawpk:
3015
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3016
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3017
else:
3018
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3019
":+SIGN-DSA-SHA256")
3020
server_defaults = {"interface": "",
3021
"address": "",
3022
"port": "",
3023
"debug": "False",
3024
"priority": priority,
3025
"servicename": "Mandos",
3026
"use_dbus": "True",
3027
"use_ipv6": "True",
3028
"debuglevel": "",
3029
"restore": "True",
3030
"socket": "",
3031
"statedir": "/var/lib/mandos",
3032
"foreground": "False",
3033
"zeroconf": "True",
3034
}
3035
del priority
3036
2025
server_defaults = { "interface": "",
2026
"address": "",
2027
"port": "",
2028
"debug": "False",
2029
"priority":
2030
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2031
"servicename": "Mandos",
2032
"use_dbus": "True",
2033
"use_ipv6": "True",
2034
"debuglevel": "",
2035
"restore": "True",
2036
"statedir": "/var/lib/mandos"
2037
}
2038
3037
2039
# Parse config file for server-global settings
3038
server_config = configparser.ConfigParser(server_defaults)
2040
server_config = configparser.SafeConfigParser(server_defaults)
3039
2041
del server_defaults
3040
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3041
# Convert the ConfigParser object to a dict
2042
server_config.read(os.path.join(options.configdir,
2043
"mandos.conf"))
2044
# Convert the SafeConfigParser object to a dict
3042
2045
server_settings = server_config.defaults()
3043
2046
# Use the appropriate methods on the non-string config options
3044
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3045
"foreground", "zeroconf"):
2047
for option in ("debug", "use_dbus", "use_ipv6"):
3046
2048
server_settings[option] = server_config.getboolean("DEFAULT",
3047
2049
option)
3048
2050
if server_settings["port"]:
3049
2051
server_settings["port"] = server_config.getint("DEFAULT",
3050
2052
"port")
3051
if server_settings["socket"]:
3052
server_settings["socket"] = server_config.getint("DEFAULT",
3053
"socket")
3054
# Later, stdin will, and stdout and stderr might, be dup'ed
3055
# over with an opened os.devnull. But we don't want this to
3056
# happen with a supplied network socket.
3057
if 0 <= server_settings["socket"] <= 2:
3058
server_settings["socket"] = os.dup(server_settings
3059
["socket"])
3060
2053
del server_config
3061
2054
3062
2055
# Override the settings from the config file with command line
3063
2056
# options, if set.
3064
2057
for option in ("interface", "address", "port", "debug",
3065
"priority", "servicename", "configdir", "use_dbus",
3066
"use_ipv6", "debuglevel", "restore", "statedir",
3067
"socket", "foreground", "zeroconf"):
2058
"priority", "servicename", "configdir",
2059
"use_dbus", "use_ipv6", "debuglevel", "restore",
2060
"statedir"):
3068
2061
value = getattr(options, option)
3069
2062
if value is not None:
3070
2063
server_settings[option] = value
3071
2064
del options
3072
2065
# Force all strings to be unicode
3073
2066
for option in server_settings.keys():
3074
if isinstance(server_settings[option], bytes):
3075
server_settings[option] = (server_settings[option]
3076
.decode("utf-8"))
3077
# Force all boolean options to be boolean
3078
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3079
"foreground", "zeroconf"):
3080
server_settings[option] = bool(server_settings[option])
3081
# Debug implies foreground
3082
if server_settings["debug"]:
3083
server_settings["foreground"] = True
2067
if type(server_settings[option]) is str:
2068
server_settings[option] = unicode(server_settings[option])
3084
2069
# Now we have our good server settings in "server_settings"
3085
2070
3086
2071
##################################################################
3087
3088
if (not server_settings["zeroconf"]
3089
and not (server_settings["port"]
3090
or server_settings["socket"] != "")):
3091
parser.error("Needs port or socket to work without Zeroconf")
3092
2072
3093
2073
# For convenience
3094
2074
debug = server_settings["debug"]
3095
2075
debuglevel = server_settings["debuglevel"]
3097
2077
use_ipv6 = server_settings["use_ipv6"]
3098
2078
stored_state_path = os.path.join(server_settings["statedir"],
3099
2079
stored_state_file)
3100
foreground = server_settings["foreground"]
3101
zeroconf = server_settings["zeroconf"]
3102
2080
3103
2081
if debug:
3104
2082
initlogger(debug, logging.DEBUG)
3105
2083
else:
3108
2086
else:
3109
2087
level = getattr(logging, debuglevel.upper())
3110
2088
initlogger(debug, level)
3111
2089
3112
2090
if server_settings["servicename"] != "Mandos":
3113
syslogger.setFormatter(
3114
logging.Formatter('Mandos ({}) [%(process)d]:'
3115
' %(levelname)s: %(message)s'.format(
3116
server_settings["servicename"])))
3117
2091
syslogger.setFormatter(logging.Formatter
2092
('Mandos (%s) [%%(process)d]:'
2093
' %%(levelname)s: %%(message)s'
2094
% server_settings["servicename"]))
2095
3118
2096
# Parse config file with clients
3119
client_config = configparser.ConfigParser(Client.client_defaults)
2097
client_config = configparser.SafeConfigParser(Client.client_defaults)
3120
2098
client_config.read(os.path.join(server_settings["configdir"],
3121
2099
"clients.conf"))
3122
2100
3123
2101
global mandos_dbus_service
3124
2102
mandos_dbus_service = None
3125
3126
socketfd = None
3127
if server_settings["socket"] != "":
3128
socketfd = server_settings["socket"]
3129
tcp_server = MandosServer(
3130
(server_settings["address"], server_settings["port"]),
3131
ClientHandler,
3132
interface=(server_settings["interface"] or None),
3133
use_ipv6=use_ipv6,
3134
gnutls_priority=server_settings["priority"],
3135
use_dbus=use_dbus,
3136
socketfd=socketfd)
3137
if not foreground:
3138
pidfilename = "/run/mandos.pid"
3139
if not os.path.isdir("/run/."):
3140
pidfilename = "/var/run/mandos.pid"
3141
pidfile = None
3142
try:
3143
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3144
except IOError as e:
3145
logger.error("Could not open file %r", pidfilename,
3146
exc_info=e)
3147
3148
for name, group in (("_mandos", "_mandos"),
3149
("mandos", "mandos"),
3150
("nobody", "nogroup")):
3151
try:
3152
uid = pwd.getpwnam(name).pw_uid
3153
gid = pwd.getpwnam(group).pw_gid
3154
break
2103
2104
tcp_server = MandosServer((server_settings["address"],
2105
server_settings["port"]),
2106
ClientHandler,
2107
interface=(server_settings["interface"]
2108
or None),
2109
use_ipv6=use_ipv6,
2110
gnutls_priority=
2111
server_settings["priority"],
2112
use_dbus=use_dbus)
2113
if not debug:
2114
pidfilename = "/var/run/mandos.pid"
2115
try:
2116
pidfile = open(pidfilename, "w")
2117
except IOError:
2118
logger.error("Could not open file %r", pidfilename)
2119
2120
try:
2121
uid = pwd.getpwnam("_mandos").pw_uid
2122
gid = pwd.getpwnam("_mandos").pw_gid
2123
except KeyError:
2124
try:
2125
uid = pwd.getpwnam("mandos").pw_uid
2126
gid = pwd.getpwnam("mandos").pw_gid
3155
2127
except KeyError:
3156
continue
3157
else:
3158
uid = 65534
3159
gid = 65534
2128
try:
2129
uid = pwd.getpwnam("nobody").pw_uid
2130
gid = pwd.getpwnam("nobody").pw_gid
2131
except KeyError:
2132
uid = 65534
2133
gid = 65534
3160
2134
try:
3161
2135
os.setgid(gid)
3162
2136
os.setuid(uid)
3163
if debug:
3164
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3165
gid))
3166
2137
except OSError as error:
3167
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3168
.format(uid, gid, os.strerror(error.errno)))
3169
if error.errno != errno.EPERM:
3170
raise
3171
2138
if error[0] != errno.EPERM:
2139
raise error
2140
3172
2141
if debug:
3173
2142
# Enable all possible GnuTLS debugging
3174
2143
3175
2144
# "Use a log level over 10 to enable all debugging options."
3176
2145
# - GnuTLS manual
3177
gnutls.global_set_log_level(11)
3178
3179
@gnutls.log_func
2146
gnutls.library.functions.gnutls_global_set_log_level(11)
2147
2148
@gnutls.library.types.gnutls_log_func
3180
2149
def debug_gnutls(level, string):
3181
2150
logger.debug("GnuTLS: %s", string[:-1])
3182
3183
gnutls.global_set_log_function(debug_gnutls)
3184
2151
2152
(gnutls.library.functions
2153
.gnutls_global_set_log_function(debug_gnutls))
2154
3185
2155
# Redirect stdin so all checkers get /dev/null
3186
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2156
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3187
2157
os.dup2(null, sys.stdin.fileno())
3188
2158
if null > 2:
3189
2159
os.close(null)
3190
2160
3191
2161
# Need to fork before connecting to D-Bus
3192
if not foreground:
2162
if not debug:
3193
2163
# Close all input and output, do double fork, etc.
3194
2164
daemon()
3195
3196
if gi.version_info < (3, 10, 2):
3197
# multiprocessing will use threads, so before we use GLib we
3198
# need to inform GLib that threads will be used.
3199
GLib.threads_init()
3200
2165
2166
gobject.threads_init()
2167
3201
2168
global main_loop
3202
2169
# From the Avahi example code
3203
DBusGMainLoop(set_as_default=True)
3204
main_loop = GLib.MainLoop()
2170
DBusGMainLoop(set_as_default=True )
2171
main_loop = gobject.MainLoop()
3205
2172
bus = dbus.SystemBus()
3206
2173
# End of Avahi example code
3207
2174
if use_dbus:
3208
2175
try:
3209
2176
bus_name = dbus.service.BusName("se.recompile.Mandos",
3210
bus,
3211
do_not_queue=True)
3212
old_bus_name = dbus.service.BusName(
3213
"se.bsnet.fukt.Mandos", bus,
3214
do_not_queue=True)
3215
except dbus.exceptions.DBusException as e:
3216
logger.error("Disabling D-Bus:", exc_info=e)
2177
bus, do_not_queue=True)
2178
old_bus_name = (dbus.service.BusName
2179
("se.bsnet.fukt.Mandos", bus,
2180
do_not_queue=True))
2181
except dbus.exceptions.NameExistsException as e:
2182
logger.error(unicode(e) + ", disabling D-Bus")
3217
2183
use_dbus = False
3218
2184
server_settings["use_dbus"] = False
3219
2185
tcp_server.use_dbus = False
3220
if zeroconf:
3221
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3222
service = AvahiServiceToSyslog(
3223
name=server_settings["servicename"],
3224
servicetype="_mandos._tcp",
3225
protocol=protocol,
3226
bus=bus)
3227
if server_settings["interface"]:
3228
service.interface = if_nametoindex(
3229
server_settings["interface"].encode("utf-8"))
3230
2186
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2187
service = AvahiServiceToSyslog(name =
2188
server_settings["servicename"],
2189
servicetype = "_mandos._tcp",
2190
protocol = protocol, bus = bus)
2191
if server_settings["interface"]:
2192
service.interface = (if_nametoindex
2193
(str(server_settings["interface"])))
2194
3231
2195
global multiprocessing_manager
3232
2196
multiprocessing_manager = multiprocessing.Manager()
3233
2197
3234
2198
client_class = Client
3235
2199
if use_dbus:
3236
client_class = functools.partial(ClientDBus, bus=bus)
3237
2200
client_class = functools.partial(ClientDBusTransitional,
2201
bus = bus)
2202
3238
2203
client_settings = Client.config_parser(client_config)
3239
2204
old_client_settings = {}
3240
2205
clients_data = {}
3241
3242
# This is used to redirect stdout and stderr for checker processes
3243
global wnull
3244
wnull = open(os.devnull, "w") # A writable /dev/null
3245
# Only used if server is running in foreground but not in debug
3246
# mode
3247
if debug or not foreground:
3248
wnull.close()
3249
2206
3250
2207
# Get client data and settings from last running state.
3251
2208
if server_settings["restore"]:
3252
2209
try:
3253
2210
with open(stored_state_path, "rb") as stored_state:
3254
if sys.version_info.major == 2:
3255
clients_data, old_client_settings = pickle.load(
3256
stored_state)
3257
else:
3258
bytes_clients_data, bytes_old_client_settings = (
3259
pickle.load(stored_state, encoding="bytes"))
3260
# Fix bytes to strings
3261
# clients_data
3262
# .keys()
3263
clients_data = {(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_clients_data.items()}
3268
del bytes_clients_data
3269
for key in clients_data:
3270
value = {(k.decode("utf-8")
3271
if isinstance(k, bytes) else k): v
3272
for k, v in
3273
clients_data[key].items()}
3274
clients_data[key] = value
3275
# .client_structure
3276
value["client_structure"] = [
3277
(s.decode("utf-8")
3278
if isinstance(s, bytes)
3279
else s) for s in
3280
value["client_structure"]]
3281
# .name, .host, and .checker_command
3282
for k in ("name", "host", "checker_command"):
3283
if isinstance(value[k], bytes):
3284
value[k] = value[k].decode("utf-8")
3285
if "key_id" not in value:
3286
value["key_id"] = ""
3287
elif "fingerprint" not in value:
3288
value["fingerprint"] = ""
3289
# old_client_settings
3290
# .keys()
3291
old_client_settings = {
3292
(key.decode("utf-8")
3293
if isinstance(key, bytes)
3294
else key): value
3295
for key, value in
3296
bytes_old_client_settings.items()}
3297
del bytes_old_client_settings
3298
# .host and .checker_command
3299
for value in old_client_settings.values():
3300
for attribute in ("host", "checker_command"):
3301
if isinstance(value[attribute], bytes):
3302
value[attribute] = (value[attribute]
3303
.decode("utf-8"))
2211
clients_data, old_client_settings = (pickle.load
2212
(stored_state))
3304
2213
os.remove(stored_state_path)
3305
2214
except IOError as e:
3306
if e.errno == errno.ENOENT:
3307
logger.warning("Could not load persistent state:"
3308
" {}".format(os.strerror(e.errno)))
3309
else:
3310
logger.critical("Could not load persistent state:",
3311
exc_info=e)
2215
logger.warning("Could not load persistent state: {0}"
2216
.format(e))
2217
if e.errno != errno.ENOENT:
3312
2218
raise
3313
2219
except EOFError as e:
3314
2220
logger.warning("Could not load persistent state: "
3315
"EOFError:",
3316
exc_info=e)
3317
2221
"EOFError: {0}".format(e))
2222
3318
2223
with PGPEngine() as pgp:
3319
for client_name, client in clients_data.items():
3320
# Skip removed clients
3321
if client_name not in client_settings:
3322
continue
3323
2224
for client_name, client in clients_data.iteritems():
3324
2225
# Decide which value to use after restoring saved state.
3325
2226
# We have three different values: Old config file,
3326
2227
# new config file, and saved state.
3331
2232
# For each value in new config, check if it
3332
2233
# differs from the old config value (Except for
3333
2234
# the "secret" attribute)
3334
if (name != "secret"
3335
and (value !=
3336
old_client_settings[client_name][name])):
2235
if (name != "secret" and
2236
value != old_client_settings[client_name]
2237
[name]):
3337
2238
client[name] = value
3338
2239
except KeyError:
3339
2240
pass
3340
2241
3341
2242
# Clients who has passed its expire date can still be
3342
# enabled if its last checker was successful. A Client
3343
# whose checker succeeded before we stored its state is
3344
# assumed to have successfully run all checkers during
3345
# downtime.
2243
# enabled if its last checker was successful. Clients
2244
# whose checker failed before we stored its state is
2245
# assumed to have failed all checkers during downtime.
3346
2246
if client["enabled"]:
3347
2247
if datetime.datetime.utcnow() >= client["expires"]:
3348
2248
if not client["last_checked_ok"]:
3349
2249
logger.warning(
3350
"disabling client {} - Client never "
3351
"performed a successful checker".format(
3352
client_name))
2250
"disabling client {0} - Client never "
2251
"performed a successfull checker"
2252
.format(client["name"]))
3353
2253
client["enabled"] = False
3354
2254
elif client["last_checker_status"] != 0:
3355
2255
logger.warning(
3356
"disabling client {} - Client last"
3357
" checker failed with error code"
3358
" {}".format(
3359
client_name,
3360
client["last_checker_status"]))
2256
"disabling client {0} - Client "
2257
"last checker failed with error code {1}"
2258
.format(client["name"],
2259
client["last_checker_status"]))
3361
2260
client["enabled"] = False
3362
2261
else:
3363
client["expires"] = (
3364
datetime.datetime.utcnow()
3365
+ client["timeout"])
3366
logger.debug("Last checker succeeded,"
3367
" keeping {} enabled".format(
3368
client_name))
2262
client["expires"] = (datetime.datetime
2263
.utcnow()
2264
+ client["timeout"])
2265
3369
2266
try:
3370
client["secret"] = pgp.decrypt(
3371
client["encrypted_secret"],
3372
client_settings[client_name]["secret"])
2267
client["secret"] = (
2268
pgp.decrypt(client["encrypted_secret"],
2269
client_settings[client_name]
2270
["secret"]))
3373
2271
except PGPError:
3374
2272
# If decryption fails, we use secret from new settings
3375
logger.debug("Failed to decrypt {} old secret".format(
3376
client_name))
3377
client["secret"] = (client_settings[client_name]
3378
["secret"])
2273
logger.debug("Failed to decrypt {0} old secret"
2274
.format(client_name))
2275
client["secret"] = (
2276
client_settings[client_name]["secret"])
3379
2277
2278
3380
2279
# Add/remove clients based on new changes made to config
3381
for client_name in (set(old_client_settings)
3382
- set(client_settings)):
2280
for client_name in set(old_client_settings) - set(client_settings):
3383
2281
del clients_data[client_name]
3384
for client_name in (set(client_settings)
3385
- set(old_client_settings)):
2282
for client_name in set(client_settings) - set(old_client_settings):
3386
2283
clients_data[client_name] = client_settings[client_name]
3387
2284
3388
# Create all client objects
3389
for client_name, client in clients_data.items():
2285
# Create clients all clients
2286
for client_name, client in clients_data.iteritems():
3390
2287
tcp_server.clients[client_name] = client_class(
3391
name=client_name,
3392
settings=client,
3393
server_settings=server_settings)
3394
2288
name = client_name, settings = client)
2289
3395
2290
if not tcp_server.clients:
3396
2291
logger.warning("No clients defined")
3397
3398
if not foreground:
3399
if pidfile is not None:
3400
pid = os.getpid()
3401
try:
3402
with pidfile:
3403
print(pid, file=pidfile)
3404
except IOError:
3405
logger.error("Could not write to file %r with PID %d",
3406
pidfilename, pid)
3407
del pidfile
2292
2293
if not debug:
2294
try:
2295
with pidfile:
2296
pid = os.getpid()
2297
pidfile.write(str(pid) + "\n".encode("utf-8"))
2298
del pidfile
2299
except IOError:
2300
logger.error("Could not write to file %r with PID %d",
2301
pidfilename, pid)
2302
except NameError:
2303
# "pidfile" was never created
2304
pass
3408
2305
del pidfilename
3409
3410
for termsig in (signal.SIGHUP, signal.SIGTERM):
3411
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3412
lambda: main_loop.quit() and False)
3413
2306
signal.signal(signal.SIGINT, signal.SIG_IGN)
2307
2308
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2309
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2310
3414
2311
if use_dbus:
3415
3416
@alternate_dbus_interfaces(
3417
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3418
class MandosDBusService(DBusObjectWithObjectManager):
2312
class MandosDBusService(dbus.service.Object):
3419
2313
"""A D-Bus proxy object"""
3420
3421
2314
def __init__(self):
3422
2315
dbus.service.Object.__init__(self, bus, "/")
3423
3424
2316
_interface = "se.recompile.Mandos"
3425
2317
3426
2318
@dbus.service.signal(_interface, signature="o")
3427
2319
def ClientAdded(self, objpath):
3428
2320
"D-Bus signal"
3429
2321
pass
3430
2322
3431
2323
@dbus.service.signal(_interface, signature="ss")
3432
def ClientNotFound(self, key_id, address):
2324
def ClientNotFound(self, fingerprint, address):
3433
2325
"D-Bus signal"
3434
2326
pass
3435
3436
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3437
"true"})
2327
3438
2328
@dbus.service.signal(_interface, signature="os")
3439
2329
def ClientRemoved(self, objpath, name):
3440
2330
"D-Bus signal"
3441
2331
pass
3442
3443
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3444
"true"})
2332
3445
2333
@dbus.service.method(_interface, out_signature="ao")
3446
2334
def GetAllClients(self):
3447
2335
"D-Bus method"
3448
return dbus.Array(c.dbus_object_path for c in
3449
tcp_server.clients.values())
3450
3451
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3452
"true"})
2336
return dbus.Array(c.dbus_object_path
2337
for c in
2338
tcp_server.clients.itervalues())
2339
3453
2340
@dbus.service.method(_interface,
3454
2341
out_signature="a{oa{sv}}")
3455
2342
def GetAllClientsWithProperties(self):
3456
2343
"D-Bus method"
3457
2344
return dbus.Dictionary(
3458
{c.dbus_object_path: c.GetAll(
3459
"se.recompile.Mandos.Client")
3460
for c in tcp_server.clients.values()},
2345
((c.dbus_object_path, c.GetAll(""))
2346
for c in tcp_server.clients.itervalues()),
3461
2347
signature="oa{sv}")
3462
2348
3463
2349
@dbus.service.method(_interface, in_signature="o")
3464
2350
def RemoveClient(self, object_path):
3465
2351
"D-Bus method"
3466
for c in tcp_server.clients.values():
2352
for c in tcp_server.clients.itervalues():
3467
2353
if c.dbus_object_path == object_path:
3468
2354
del tcp_server.clients[c.name]
3469
2355
c.remove_from_connection()
3470
# Don't signal the disabling
2356
# Don't signal anything except ClientRemoved
3471
2357
c.disable(quiet=True)
3472
# Emit D-Bus signal for removal
3473
self.client_removed_signal(c)
2358
# Emit D-Bus signal
2359
self.ClientRemoved(object_path, c.name)
3474
2360
return
3475
2361
raise KeyError(object_path)
3476
2362
3477
2363
del _interface
3478
3479
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3480
out_signature="a{oa{sa{sv}}}")
3481
def GetManagedObjects(self):
3482
"""D-Bus method"""
3483
return dbus.Dictionary(
3484
{client.dbus_object_path:
3485
dbus.Dictionary(
3486
{interface: client.GetAll(interface)
3487
for interface in
3488
client._get_all_interface_names()})
3489
for client in tcp_server.clients.values()})
3490
3491
def client_added_signal(self, client):
3492
"""Send the new standard signal and the old signal"""
3493
if use_dbus:
3494
# New standard signal
3495
self.InterfacesAdded(
3496
client.dbus_object_path,
3497
dbus.Dictionary(
3498
{interface: client.GetAll(interface)
3499
for interface in
3500
client._get_all_interface_names()}))
3501
# Old signal
3502
self.ClientAdded(client.dbus_object_path)
3503
3504
def client_removed_signal(self, client):
3505
"""Send the new standard signal and the old signal"""
3506
if use_dbus:
3507
# New standard signal
3508
self.InterfacesRemoved(
3509
client.dbus_object_path,
3510
client._get_all_interface_names())
3511
# Old signal
3512
self.ClientRemoved(client.dbus_object_path,
3513
client.name)
3514
3515
mandos_dbus_service = MandosDBusService()
3516
3517
# Save modules to variables to exempt the modules from being
3518
# unloaded before the function registered with atexit() is run.
3519
mp = multiprocessing
3520
wn = wnull
3521
2364
2365
class MandosDBusServiceTransitional(MandosDBusService):
2366
__metaclass__ = AlternateDBusNamesMetaclass
2367
mandos_dbus_service = MandosDBusServiceTransitional()
2368
3522
2369
def cleanup():
3523
2370
"Cleanup function; run on exit"
3524
if zeroconf:
3525
service.cleanup()
3526
3527
mp.active_children()
3528
wn.close()
2371
service.cleanup()
2372
2373
multiprocessing.active_children()
3529
2374
if not (tcp_server.clients or client_settings):
3530
2375
return
3531
2376
3532
2377
# Store client before exiting. Secrets are encrypted with key
3533
2378
# based on what config file has. If config file is
3534
2379
# removed/edited, old secret will thus be unrecovable.
3535
2380
clients = {}
3536
2381
with PGPEngine() as pgp:
3537
for client in tcp_server.clients.values():
2382
for client in tcp_server.clients.itervalues():
3538
2383
key = client_settings[client.name]["secret"]
3539
2384
client.encrypted_secret = pgp.encrypt(client.secret,
3540
2385
key)
3541
2386
client_dict = {}
3542
2387
3543
2388
# A list of attributes that can not be pickled
3544
2389
# + secret.
3545
exclude = {"bus", "changedstate", "secret",
3546
"checker", "server_settings"}
3547
for name, typ in inspect.getmembers(dbus.service
3548
.Object):
2390
exclude = set(("bus", "changedstate", "secret",
2391
"checker"))
2392
for name, typ in (inspect.getmembers
2393
(dbus.service.Object)):
3549
2394
exclude.add(name)
3550
2395
3551
2396
client_dict["encrypted_secret"] = (client
3552
2397
.encrypted_secret)
3553
2398
for attr in client.client_structure:
3554
2399
if attr not in exclude:
3555
2400
client_dict[attr] = getattr(client, attr)
3556
2401
3557
2402
clients[client.name] = client_dict
3558
2403
del client_settings[client.name]["secret"]
3559
2404
3560
2405
try:
3561
with tempfile.NamedTemporaryFile(
3562
mode='wb',
3563
suffix=".pickle",
3564
prefix='clients-',
3565
dir=os.path.dirname(stored_state_path),
3566
delete=False) as stored_state:
3567
pickle.dump((clients, client_settings), stored_state,
3568
protocol=2)
3569
tempname = stored_state.name
2406
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2407
prefix="clients-",
2408
dir=os.path.dirname
2409
(stored_state_path))
2410
with os.fdopen(tempfd, "wb") as stored_state:
2411
pickle.dump((clients, client_settings), stored_state)
3570
2412
os.rename(tempname, stored_state_path)
3571
2413
except (IOError, OSError) as e:
2414
logger.warning("Could not save persistent state: {0}"
2415
.format(e))
3572
2416
if not debug:
3573
2417
try:
3574
2418
os.remove(tempname)
3575
2419
except NameError:
3576
2420
pass
3577
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3578
logger.warning("Could not save persistent state: {}"
3579
.format(os.strerror(e.errno)))
3580
else:
3581
logger.warning("Could not save persistent state:",
3582
exc_info=e)
3583
raise
3584
2421
if e.errno not in set((errno.ENOENT, errno.EACCES,
2422
errno.EEXIST)):
2423
raise e
2424
3585
2425
# Delete all clients, and settings from config
3586
2426
while tcp_server.clients:
3587
2427
name, client = tcp_server.clients.popitem()
3588
2428
if use_dbus:
3589
2429
client.remove_from_connection()
3590
# Don't signal the disabling
2430
# Don't signal anything except ClientRemoved
3591
2431
client.disable(quiet=True)
3592
# Emit D-Bus signal for removal
3593
2432
if use_dbus:
3594
mandos_dbus_service.client_removed_signal(client)
2433
# Emit D-Bus signal
2434
mandos_dbus_service.ClientRemoved(client
2435
.dbus_object_path,
2436
client.name)
3595
2437
client_settings.clear()
3596
2438
3597
2439
atexit.register(cleanup)
3598
3599
for client in tcp_server.clients.values():
2440
2441
for client in tcp_server.clients.itervalues():
3600
2442
if use_dbus:
3601
# Emit D-Bus signal for adding
3602
mandos_dbus_service.client_added_signal(client)
2443
# Emit D-Bus signal
2444
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3603
2445
# Need to initiate checking of clients
3604
2446
if client.enabled:
3605
2447
client.init_checker()
3606
2448
3607
2449
tcp_server.enable()
3608
2450
tcp_server.server_activate()
3609
2451
3610
2452
# Find out what port we got
3611
if zeroconf:
3612
service.port = tcp_server.socket.getsockname()[1]
2453
service.port = tcp_server.socket.getsockname()[1]
3613
2454
if use_ipv6:
3614
2455
logger.info("Now listening on address %r, port %d,"
3615
" flowinfo %d, scope_id %d",
3616
*tcp_server.socket.getsockname())
2456
" flowinfo %d, scope_id %d"
2457
% tcp_server.socket.getsockname())
3617
2458
else: # IPv4
3618
logger.info("Now listening on address %r, port %d",
3619
*tcp_server.socket.getsockname())
3620
3621
# service.interface = tcp_server.socket.getsockname()[3]
3622
2459
logger.info("Now listening on address %r, port %d"
2460
% tcp_server.socket.getsockname())
2461
2462
#service.interface = tcp_server.socket.getsockname()[3]
2463
3623
2464
try:
3624
if zeroconf:
3625
# From the Avahi example code
3626
try:
3627
service.activate()
3628
except dbus.exceptions.DBusException as error:
3629
logger.critical("D-Bus Exception", exc_info=error)
3630
cleanup()
3631
sys.exit(1)
3632
# End of Avahi example code
3633
3634
GLib.io_add_watch(
3635
GLib.IOChannel.unix_new(tcp_server.fileno()),
3636
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3637
lambda *args, **kwargs: (tcp_server.handle_request
3638
(*args[2:], **kwargs) or True))
3639
2465
# From the Avahi example code
2466
try:
2467
service.activate()
2468
except dbus.exceptions.DBusException as error:
2469
logger.critical("DBusException: %s", error)
2470
cleanup()
2471
sys.exit(1)
2472
# End of Avahi example code
2473
2474
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2475
lambda *args, **kwargs:
2476
(tcp_server.handle_request
2477
(*args[2:], **kwargs) or True))
2478
3640
2479
logger.debug("Starting main loop")
3641
2480
main_loop.run()
3642
2481
except AvahiError as error:
3643
logger.critical("Avahi Error", exc_info=error)
2482
logger.critical("AvahiError: %s", error)
3644
2483
cleanup()
3645
2484
sys.exit(1)
3646
2485
except KeyboardInterrupt:
3651
2490
# Must run before the D-Bus bus name gets deregistered
3652
2491
cleanup()
3653
2492
3654
3655
def should_only_run_tests():
3656
parser = argparse.ArgumentParser(add_help=False)
3657
parser.add_argument("--check", action='store_true')
3658
args, unknown_args = parser.parse_known_args()
3659
run_tests = args.check
3660
if run_tests:
3661
# Remove --check argument from sys.argv
3662
sys.argv[1:] = unknown_args
3663
return run_tests
3664
3665
# Add all tests from doctest strings
3666
def load_tests(loader, tests, none):
3667
import doctest
3668
tests.addTests(doctest.DocTestSuite())
3669
return tests
3670
3671
2493
if __name__ == '__main__':
3672
try:
3673
if should_only_run_tests():
3674
# Call using ./mandos --check [--verbose]
3675
unittest.main()
3676
else:
3677
main()
3678
finally:
3679
logging.shutdown()
2494
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0