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- Committer: Teddy Hogeborn
- Date: 2016-03-12 20:23:15 UTC
- Revision ID: teddy@recompile.se-20160312202315-hu7b87ivetlxqbw3
Server: Fix minor thing with Python 3 compatibility
Fix another small thing with unpickling string values.
* mandos (main): When restoring pickled client data, only decode byte
string for "host" key if it really is a byte string.
Fix another small thing with unpickling string values.
* mandos (main): When restoring pickled client data, only decode byte
string for "host" key if it really is a byte string.
- files removed:
- tmpfiles.d-mandos.conf
- files modified:
- INSTALL
added
removed
mandos
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#!/usr/bin/python
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# -*- mode: python; coding: utf-8 -*-
3
#
3
#
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# Mandos server - give out binary blobs to connecting clients.
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#
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#
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# This program is partly derived from an example program for an Avahi
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# service publisher, downloaded from
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# <http://avahi.org/wiki/PythonPublishExample>. This includes the
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# methods "add", "remove", "server_state_changed",
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# "entry_group_state_changed", "cleanup", and "activate" in the
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# "AvahiService" class, and some lines in "main".
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#
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#
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# Everything else is
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# Copyright © 2008-2016 Teddy Hogeborn
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# Copyright © 2008-2016 Björn Påhlsson
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#
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
26
#
26
#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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#
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# Contact the authors at <mandos@recompile.se>.
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#
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#
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from __future__ import (division, absolute_import, print_function,
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unicode_literals)
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import dbus
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import dbus.service
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from gi.repository import GLib
82
try:
83
from gi.repository import GObject
84
except ImportError:
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import gobject as GObject
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from dbus.mainloop.glib import DBusGMainLoop
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import ctypes
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import ctypes.util
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import xml.dom.minidom
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import inspect
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# Try to find the value of SO_BINDTODEVICE:
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try:
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# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
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# newer, and it is also the most natural place for it:
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SO_BINDTODEVICE = socket.SO_BINDTODEVICE
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except AttributeError:
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try:
96
# This is where SO_BINDTODEVICE was up to and including Python
97
# 2.6, and also 3.2:
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from IN import SO_BINDTODEVICE
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except ImportError:
100
# In Python 2.7 it seems to have been removed entirely.
101
# Try running the C preprocessor:
102
try:
103
cc = subprocess.Popen(["cc", "--language=c", "-E",
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"/dev/stdin"],
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE)
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stdout = cc.communicate(
108
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
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SO_BINDTODEVICE = int(stdout.splitlines()[-1])
110
except (OSError, ValueError, IndexError):
111
# No value found
112
SO_BINDTODEVICE = None
98
SO_BINDTODEVICE = None
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100
if sys.version_info.major == 2:
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str = unicode
116
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version = "1.7.13"
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version = "1.7.5"
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stored_state_file = "clients.pickle"
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logger = logging.getLogger()
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if_nametoindex = ctypes.cdll.LoadLibrary(
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ctypes.util.find_library("c")).if_nametoindex
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except (OSError, AttributeError):
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113
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def if_nametoindex(interface):
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"Get an interface index the hard way, i.e. using fcntl()"
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SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
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def initlogger(debug, level=logging.WARNING):
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"""init logger and add loglevel"""
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global syslogger
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syslogger = (logging.handlers.SysLogHandler(
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facility=logging.handlers.SysLogHandler.LOG_DAEMON,
160
address="/dev/log"))
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facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = "/dev/log"))
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syslogger.setFormatter(logging.Formatter
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('Mandos [%(process)d]: %(levelname)s:'
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' %(message)s'))
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logger.addHandler(syslogger)
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if debug:
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
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class PGPEngine(object):
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"""A simple class for OpenPGP symmetric encryption & decryption"""
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def __init__(self):
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self.tempdir = tempfile.mkdtemp(prefix="mandos-")
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self.gpg = "gpg"
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self.gnupgargs = ['--batch',
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'--homedir', self.tempdir,
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185
'--force-mdc',
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'--quiet']
201
# Only GPG version 1 has the --no-use-agent option.
202
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
203
self.gnupgargs.append("--no-use-agent")
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'--quiet',
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'--no-use-agent']
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def __enter__(self):
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return self
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def __exit__(self, exc_type, exc_value, traceback):
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self._cleanup()
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return False
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def __del__(self):
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self._cleanup()
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def _cleanup(self):
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if self.tempdir is not None:
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# Delete contents of tempdir
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for root, dirs, files in os.walk(self.tempdir,
219
topdown=False):
203
topdown = False):
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for filename in files:
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os.remove(os.path.join(root, filename))
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for dirname in dirs:
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# Remove tempdir
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os.rmdir(self.tempdir)
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self.tempdir = None
227
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def password_encode(self, password):
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# Passphrase can not be empty and can not contain newlines or
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# NUL bytes. So we prefix it and hex encode it.
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.replace(b"\n", b"\\n")
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.replace(b"\0", b"\\x00"))
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return encoded
238
222
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def encrypt(self, data, password):
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passphrase = self.password_encode(password)
241
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with tempfile.NamedTemporaryFile(
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'--passphrase-file',
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231
passfile.name]
248
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+ self.gnupgargs,
249
stdin=subprocess.PIPE,
250
stdout=subprocess.PIPE,
251
stderr=subprocess.PIPE)
252
ciphertext, err = proc.communicate(input=data)
233
stdin = subprocess.PIPE,
234
stdout = subprocess.PIPE,
235
stderr = subprocess.PIPE)
236
ciphertext, err = proc.communicate(input = data)
253
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if proc.returncode != 0:
254
238
raise PGPError(err)
255
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return ciphertext
256
240
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def decrypt(self, data, password):
258
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passphrase = self.password_encode(password)
259
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with tempfile.NamedTemporaryFile(
260
dir=self.tempdir) as passfile:
244
dir = self.tempdir) as passfile:
261
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passfile.write(passphrase)
262
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passfile.flush()
263
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proc = subprocess.Popen([self.gpg, '--decrypt',
264
248
'--passphrase-file',
265
249
passfile.name]
266
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+ self.gnupgargs,
267
stdin=subprocess.PIPE,
268
stdout=subprocess.PIPE,
269
stderr=subprocess.PIPE)
270
decrypted_plaintext, err = proc.communicate(input=data)
251
stdin = subprocess.PIPE,
252
stdout = subprocess.PIPE,
253
stderr = subprocess.PIPE)
254
decrypted_plaintext, err = proc.communicate(input = data)
271
255
if proc.returncode != 0:
272
256
raise PGPError(err)
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return decrypted_plaintext
274
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275
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# Pretend that we have an Avahi module
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class Avahi(object):
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"""This isn't so much a class as it is a module-like namespace.
279
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It is instantiated once, and simulates having an Avahi module."""
280
IF_UNSPEC = -1 # avahi-common/address.h
281
PROTO_UNSPEC = -1 # avahi-common/address.h
282
PROTO_INET = 0 # avahi-common/address.h
283
PROTO_INET6 = 1 # avahi-common/address.h
263
IF_UNSPEC = -1 # avahi-common/address.h
264
PROTO_UNSPEC = -1 # avahi-common/address.h
265
PROTO_INET = 0 # avahi-common/address.h
266
PROTO_INET6 = 1 # avahi-common/address.h
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267
DBUS_NAME = "org.freedesktop.Avahi"
285
268
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
286
269
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
287
270
DBUS_PATH_SERVER = "/"
288
289
271
def string_array_to_txt_array(self, t):
290
272
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
291
273
for s in t), signature="ay")
292
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
293
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
294
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
295
SERVER_INVALID = 0 # avahi-common/defs.h
296
SERVER_REGISTERING = 1 # avahi-common/defs.h
297
SERVER_RUNNING = 2 # avahi-common/defs.h
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SERVER_COLLISION = 3 # avahi-common/defs.h
299
SERVER_FAILURE = 4 # avahi-common/defs.h
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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
275
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
276
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
277
SERVER_INVALID = 0 # avahi-common/defs.h
278
SERVER_REGISTERING = 1 # avahi-common/defs.h
279
SERVER_RUNNING = 2 # avahi-common/defs.h
280
SERVER_COLLISION = 3 # avahi-common/defs.h
281
SERVER_FAILURE = 4 # avahi-common/defs.h
300
282
avahi = Avahi()
301
283
302
303
284
class AvahiError(Exception):
304
285
def __init__(self, value, *args, **kwargs):
305
286
self.value = value
317
298
318
299
class AvahiService(object):
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"""An Avahi (Zeroconf) service.
320
301
321
302
Attributes:
322
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interface: integer; avahi.IF_UNSPEC or an interface index.
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Used to optionally bind to the specified interface.
335
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server: D-Bus Server
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bus: dbus.SystemBus()
337
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"""
338
319
339
320
def __init__(self,
340
interface=avahi.IF_UNSPEC,
341
name=None,
342
servicetype=None,
343
port=None,
344
TXT=None,
345
domain="",
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host="",
347
max_renames=32768,
348
protocol=avahi.PROTO_UNSPEC,
349
bus=None):
321
interface = avahi.IF_UNSPEC,
322
name = None,
323
servicetype = None,
324
port = None,
325
TXT = None,
326
domain = "",
327
host = "",
328
max_renames = 32768,
329
protocol = avahi.PROTO_UNSPEC,
330
bus = None):
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self.interface = interface
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332
self.name = name
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333
self.type = servicetype
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342
self.server = None
362
343
self.bus = bus
363
344
self.entry_group_state_changed_match = None
364
345
365
346
def rename(self, remove=True):
366
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"""Derived from the Avahi example code"""
367
348
if self.rename_count >= self.max_renames:
387
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logger.critical("D-Bus Exception", exc_info=error)
388
369
self.cleanup()
389
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os._exit(1)
390
371
391
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def remove(self):
392
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"""Derived from the Avahi example code"""
393
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if self.entry_group_state_changed_match is not None:
395
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self.entry_group_state_changed_match = None
396
377
if self.group is not None:
397
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self.group.Reset()
398
379
399
380
def add(self):
400
381
"""Derived from the Avahi example code"""
401
382
self.remove()
418
399
dbus.UInt16(self.port),
419
400
avahi.string_array_to_txt_array(self.TXT))
420
401
self.group.Commit()
421
402
422
403
def entry_group_state_changed(self, state, error):
423
404
"""Derived from the Avahi example code"""
424
405
logger.debug("Avahi entry group state change: %i", state)
425
406
426
407
if state == avahi.ENTRY_GROUP_ESTABLISHED:
427
408
logger.debug("Zeroconf service established.")
428
409
elif state == avahi.ENTRY_GROUP_COLLISION:
432
413
logger.critical("Avahi: Error in group state changed %s",
433
414
str(error))
434
415
raise AvahiGroupError("State changed: {!s}".format(error))
435
416
436
417
def cleanup(self):
437
418
"""Derived from the Avahi example code"""
438
419
if self.group is not None:
443
424
pass
444
425
self.group = None
445
426
self.remove()
446
427
447
428
def server_state_changed(self, state, error=None):
448
429
"""Derived from the Avahi example code"""
449
430
logger.debug("Avahi server state change: %i", state)
478
459
logger.debug("Unknown state: %r", state)
479
460
else:
480
461
logger.debug("Unknown state: %r: %r", state, error)
481
462
482
463
def activate(self):
483
464
"""Derived from the Avahi example code"""
484
465
if self.server is None:
501
482
.format(self.name)))
502
483
return ret
503
484
504
505
485
# Pretend that we have a GnuTLS module
506
486
class GnuTLS(object):
507
487
"""This isn't so much a class as it is a module-like namespace.
508
488
It is instantiated once, and simulates having a GnuTLS module."""
509
510
library = ctypes.util.find_library("gnutls")
511
if library is None:
512
library = ctypes.util.find_library("gnutls-deb0")
513
_library = ctypes.cdll.LoadLibrary(library)
514
del library
489
490
_library = ctypes.cdll.LoadLibrary(
491
ctypes.util.find_library("gnutls"))
515
492
_need_version = b"3.3.0"
516
517
493
def __init__(self):
518
# Need to use "self" here, since this method is called before
519
# the assignment to the "gnutls" global variable happens.
520
if self.check_version(self._need_version) is None:
521
raise self.Error("Needs GnuTLS {} or later"
522
.format(self._need_version))
523
494
# Need to use class name "GnuTLS" here, since this method is
495
# called before the assignment to the "gnutls" global variable
496
# happens.
497
if GnuTLS.check_version(self._need_version) is None:
498
raise GnuTLS.Error("Needs GnuTLS {} or later"
499
.format(self._need_version))
500
524
501
# Unless otherwise indicated, the constants and types below are
525
502
# all from the gnutls/gnutls.h C header file.
526
503
527
504
# Constants
528
505
E_SUCCESS = 0
529
506
E_INTERRUPTED = -52
534
511
CRD_CERTIFICATE = 1
535
512
E_NO_CERTIFICATE_FOUND = -49
536
513
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
537
514
538
515
# Types
539
516
class session_int(ctypes.Structure):
540
517
_fields_ = []
541
518
session_t = ctypes.POINTER(session_int)
542
543
519
class certificate_credentials_st(ctypes.Structure):
544
520
_fields_ = []
545
521
certificate_credentials_t = ctypes.POINTER(
546
522
certificate_credentials_st)
547
523
certificate_type_t = ctypes.c_int
548
549
524
class datum_t(ctypes.Structure):
550
525
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
551
526
('size', ctypes.c_uint)]
552
553
527
class openpgp_crt_int(ctypes.Structure):
554
528
_fields_ = []
555
529
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
556
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
530
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
557
531
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
558
532
credentials_type_t = ctypes.c_int
559
533
transport_ptr_t = ctypes.c_void_p
560
534
close_request_t = ctypes.c_int
561
535
562
536
# Exceptions
563
537
class Error(Exception):
564
538
# We need to use the class name "GnuTLS" here, since this
565
539
# exception might be raised from within GnuTLS.__init__,
566
540
# which is called before the assignment to the "gnutls"
567
541
# global variable has happened.
568
def __init__(self, message=None, code=None, args=()):
542
def __init__(self, message = None, code = None, args=()):
569
543
# Default usage is by a message string, but if a return
570
544
# code is passed, convert it to a string with
571
545
# gnutls.strerror()
574
548
message = GnuTLS.strerror(code)
575
549
return super(GnuTLS.Error, self).__init__(
576
550
message, *args)
577
551
578
552
class CertificateSecurityError(Error):
579
553
pass
580
554
581
555
# Classes
582
556
class Credentials(object):
583
557
def __init__(self):
585
559
gnutls.certificate_allocate_credentials(
586
560
ctypes.byref(self._c_object))
587
561
self.type = gnutls.CRD_CERTIFICATE
588
562
589
563
def __del__(self):
590
564
gnutls.certificate_free_credentials(self._c_object)
591
565
592
566
class ClientSession(object):
593
def __init__(self, socket, credentials=None):
567
def __init__(self, socket, credentials = None):
594
568
self._c_object = gnutls.session_t()
595
569
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
596
570
gnutls.set_default_priority(self._c_object)
604
578
ctypes.cast(credentials._c_object,
605
579
ctypes.c_void_p))
606
580
self.credentials = credentials
607
581
608
582
def __del__(self):
609
583
gnutls.deinit(self._c_object)
610
584
611
585
def handshake(self):
612
586
return gnutls.handshake(self._c_object)
613
587
614
588
def send(self, data):
615
589
data = bytes(data)
616
590
data_len = len(data)
618
592
data_len -= gnutls.record_send(self._c_object,
619
593
data[-data_len:],
620
594
data_len)
621
595
622
596
def bye(self):
623
597
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
624
598
625
599
# Error handling functions
626
600
def _error_code(result):
627
601
"""A function to raise exceptions on errors, suitable
629
603
if result >= 0:
630
604
return result
631
605
if result == gnutls.E_NO_CERTIFICATE_FOUND:
632
raise gnutls.CertificateSecurityError(code=result)
633
raise gnutls.Error(code=result)
634
606
raise gnutls.CertificateSecurityError(code = result)
607
raise gnutls.Error(code = result)
608
635
609
def _retry_on_error(result, func, arguments):
636
610
"""A function to retry on some errors, suitable
637
611
for the 'errcheck' attribute on ctypes functions"""
640
614
return _error_code(result)
641
615
result = func(*arguments)
642
616
return result
643
617
644
618
# Unless otherwise indicated, the function declarations below are
645
619
# all from the gnutls/gnutls.h C header file.
646
620
647
621
# Functions
648
622
priority_set_direct = _library.gnutls_priority_set_direct
649
623
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
650
624
ctypes.POINTER(ctypes.c_char_p)]
651
625
priority_set_direct.restype = _error_code
652
626
653
627
init = _library.gnutls_init
654
628
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
655
629
init.restype = _error_code
656
630
657
631
set_default_priority = _library.gnutls_set_default_priority
658
632
set_default_priority.argtypes = [session_t]
659
633
set_default_priority.restype = _error_code
660
634
661
635
record_send = _library.gnutls_record_send
662
636
record_send.argtypes = [session_t, ctypes.c_void_p,
663
637
ctypes.c_size_t]
664
638
record_send.restype = ctypes.c_ssize_t
665
639
record_send.errcheck = _retry_on_error
666
640
667
641
certificate_allocate_credentials = (
668
642
_library.gnutls_certificate_allocate_credentials)
669
643
certificate_allocate_credentials.argtypes = [
670
644
ctypes.POINTER(certificate_credentials_t)]
671
645
certificate_allocate_credentials.restype = _error_code
672
646
673
647
certificate_free_credentials = (
674
648
_library.gnutls_certificate_free_credentials)
675
certificate_free_credentials.argtypes = [
676
certificate_credentials_t]
649
certificate_free_credentials.argtypes = [certificate_credentials_t]
677
650
certificate_free_credentials.restype = None
678
651
679
652
handshake_set_private_extensions = (
680
653
_library.gnutls_handshake_set_private_extensions)
681
654
handshake_set_private_extensions.argtypes = [session_t,
682
655
ctypes.c_int]
683
656
handshake_set_private_extensions.restype = None
684
657
685
658
credentials_set = _library.gnutls_credentials_set
686
659
credentials_set.argtypes = [session_t, credentials_type_t,
687
660
ctypes.c_void_p]
688
661
credentials_set.restype = _error_code
689
662
690
663
strerror = _library.gnutls_strerror
691
664
strerror.argtypes = [ctypes.c_int]
692
665
strerror.restype = ctypes.c_char_p
693
666
694
667
certificate_type_get = _library.gnutls_certificate_type_get
695
668
certificate_type_get.argtypes = [session_t]
696
669
certificate_type_get.restype = _error_code
697
670
698
671
certificate_get_peers = _library.gnutls_certificate_get_peers
699
672
certificate_get_peers.argtypes = [session_t,
700
673
ctypes.POINTER(ctypes.c_uint)]
701
674
certificate_get_peers.restype = ctypes.POINTER(datum_t)
702
675
703
676
global_set_log_level = _library.gnutls_global_set_log_level
704
677
global_set_log_level.argtypes = [ctypes.c_int]
705
678
global_set_log_level.restype = None
706
679
707
680
global_set_log_function = _library.gnutls_global_set_log_function
708
681
global_set_log_function.argtypes = [log_func]
709
682
global_set_log_function.restype = None
710
683
711
684
deinit = _library.gnutls_deinit
712
685
deinit.argtypes = [session_t]
713
686
deinit.restype = None
714
687
715
688
handshake = _library.gnutls_handshake
716
689
handshake.argtypes = [session_t]
717
690
handshake.restype = _error_code
718
691
handshake.errcheck = _retry_on_error
719
692
720
693
transport_set_ptr = _library.gnutls_transport_set_ptr
721
694
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
722
695
transport_set_ptr.restype = None
723
696
724
697
bye = _library.gnutls_bye
725
698
bye.argtypes = [session_t, close_request_t]
726
699
bye.restype = _error_code
727
700
bye.errcheck = _retry_on_error
728
701
729
702
check_version = _library.gnutls_check_version
730
703
check_version.argtypes = [ctypes.c_char_p]
731
704
check_version.restype = ctypes.c_char_p
732
705
733
706
# All the function declarations below are from gnutls/openpgp.h
734
707
735
708
openpgp_crt_init = _library.gnutls_openpgp_crt_init
736
709
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
737
710
openpgp_crt_init.restype = _error_code
738
711
739
712
openpgp_crt_import = _library.gnutls_openpgp_crt_import
740
713
openpgp_crt_import.argtypes = [openpgp_crt_t,
741
714
ctypes.POINTER(datum_t),
742
715
openpgp_crt_fmt_t]
743
716
openpgp_crt_import.restype = _error_code
744
717
745
718
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
746
719
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
747
720
ctypes.POINTER(ctypes.c_uint)]
748
721
openpgp_crt_verify_self.restype = _error_code
749
722
750
723
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
751
724
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
752
725
openpgp_crt_deinit.restype = None
753
726
754
727
openpgp_crt_get_fingerprint = (
755
728
_library.gnutls_openpgp_crt_get_fingerprint)
756
729
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
758
731
ctypes.POINTER(
759
732
ctypes.c_size_t)]
760
733
openpgp_crt_get_fingerprint.restype = _error_code
761
734
762
735
# Remove non-public functions
763
736
del _error_code, _retry_on_error
764
737
# Create the global "gnutls" object, simulating a module
765
738
gnutls = GnuTLS()
766
739
767
768
740
def call_pipe(connection, # : multiprocessing.Connection
769
741
func, *args, **kwargs):
770
742
"""This function is meant to be called by multiprocessing.Process
771
743
772
744
This function runs func(*args, **kwargs), and writes the resulting
773
745
return value on the provided multiprocessing.Connection.
774
746
"""
775
747
connection.send(func(*args, **kwargs))
776
748
connection.close()
777
749
778
779
750
class Client(object):
780
751
"""A representation of a client host served by this server.
781
752
782
753
Attributes:
783
754
approved: bool(); 'None' if not yet approved/disapproved
784
755
approval_delay: datetime.timedelta(); Time to wait for approval
786
757
checker: subprocess.Popen(); a running checker process used
787
758
to see if the client lives.
788
759
'None' if no process is running.
789
checker_callback_tag: a GLib event source tag, or None
760
checker_callback_tag: a GObject event source tag, or None
790
761
checker_command: string; External command which is run to check
791
762
if client lives. %() expansions are done at
792
763
runtime with vars(self) as dict, so that for
793
764
instance %(name)s can be used in the command.
794
checker_initiator_tag: a GLib event source tag, or None
765
checker_initiator_tag: a GObject event source tag, or None
795
766
created: datetime.datetime(); (UTC) object creation
796
767
client_structure: Object describing what attributes a client has
797
768
and is used for storing the client at exit
798
769
current_checker_command: string; current running checker_command
799
disable_initiator_tag: a GLib event source tag, or None
770
disable_initiator_tag: a GObject event source tag, or None
800
771
enabled: bool()
801
772
fingerprint: string (40 or 32 hexadecimal digits); used to
802
773
uniquely identify the client
821
792
disabled, or None
822
793
server_settings: The server_settings dict from main()
823
794
"""
824
795
825
796
runtime_expansions = ("approval_delay", "approval_duration",
826
797
"created", "enabled", "expires",
827
798
"fingerprint", "host", "interval",
838
809
"approved_by_default": "True",
839
810
"enabled": "True",
840
811
}
841
812
842
813
@staticmethod
843
814
def config_parser(config):
844
815
"""Construct a new dict of client settings of this form:
851
822
for client_name in config.sections():
852
823
section = dict(config.items(client_name))
853
824
client = settings[client_name] = {}
854
825
855
826
client["host"] = section["host"]
856
827
# Reformat values from string types to Python types
857
828
client["approved_by_default"] = config.getboolean(
858
829
client_name, "approved_by_default")
859
830
client["enabled"] = config.getboolean(client_name,
860
831
"enabled")
861
832
862
833
# Uppercase and remove spaces from fingerprint for later
863
834
# comparison purposes with return value from the
864
835
# fingerprint() function
888
859
client["last_approval_request"] = None
889
860
client["last_checked_ok"] = None
890
861
client["last_checker_status"] = -2
891
862
892
863
return settings
893
894
def __init__(self, settings, name=None, server_settings=None):
864
865
def __init__(self, settings, name = None, server_settings=None):
895
866
self.name = name
896
867
if server_settings is None:
897
868
server_settings = {}
899
870
# adding all client settings
900
871
for setting, value in settings.items():
901
872
setattr(self, setting, value)
902
873
903
874
if self.enabled:
904
875
if not hasattr(self, "last_enabled"):
905
876
self.last_enabled = datetime.datetime.utcnow()
909
880
else:
910
881
self.last_enabled = None
911
882
self.expires = None
912
883
913
884
logger.debug("Creating client %r", self.name)
914
885
logger.debug(" Fingerprint: %s", self.fingerprint)
915
886
self.created = settings.get("created",
916
887
datetime.datetime.utcnow())
917
888
918
889
# attributes specific for this server instance
919
890
self.checker = None
920
891
self.checker_initiator_tag = None
929
900
for attr in self.__dict__.keys()
930
901
if not attr.startswith("_")]
931
902
self.client_structure.append("client_structure")
932
903
933
904
for name, t in inspect.getmembers(
934
905
type(self), lambda obj: isinstance(obj, property)):
935
906
if not name.startswith("_"):
936
907
self.client_structure.append(name)
937
908
938
909
# Send notice to process children that client state has changed
939
910
def send_changedstate(self):
940
911
with self.changedstate:
941
912
self.changedstate.notify_all()
942
913
943
914
def enable(self):
944
915
"""Start this client's checker and timeout hooks"""
945
916
if getattr(self, "enabled", False):
950
921
self.last_enabled = datetime.datetime.utcnow()
951
922
self.init_checker()
952
923
self.send_changedstate()
953
924
954
925
def disable(self, quiet=True):
955
926
"""Disable this client."""
956
927
if not getattr(self, "enabled", False):
958
929
if not quiet:
959
930
logger.info("Disabling client %s", self.name)
960
931
if getattr(self, "disable_initiator_tag", None) is not None:
961
GLib.source_remove(self.disable_initiator_tag)
932
GObject.source_remove(self.disable_initiator_tag)
962
933
self.disable_initiator_tag = None
963
934
self.expires = None
964
935
if getattr(self, "checker_initiator_tag", None) is not None:
965
GLib.source_remove(self.checker_initiator_tag)
936
GObject.source_remove(self.checker_initiator_tag)
966
937
self.checker_initiator_tag = None
967
938
self.stop_checker()
968
939
self.enabled = False
969
940
if not quiet:
970
941
self.send_changedstate()
971
# Do not run this again if called by a GLib.timeout_add
942
# Do not run this again if called by a GObject.timeout_add
972
943
return False
973
944
974
945
def __del__(self):
975
946
self.disable()
976
947
977
948
def init_checker(self):
978
949
# Schedule a new checker to be started an 'interval' from now,
979
950
# and every interval from then on.
980
951
if self.checker_initiator_tag is not None:
981
GLib.source_remove(self.checker_initiator_tag)
982
self.checker_initiator_tag = GLib.timeout_add(
952
GObject.source_remove(self.checker_initiator_tag)
953
self.checker_initiator_tag = GObject.timeout_add(
983
954
int(self.interval.total_seconds() * 1000),
984
955
self.start_checker)
985
956
# Schedule a disable() when 'timeout' has passed
986
957
if self.disable_initiator_tag is not None:
987
GLib.source_remove(self.disable_initiator_tag)
988
self.disable_initiator_tag = GLib.timeout_add(
958
GObject.source_remove(self.disable_initiator_tag)
959
self.disable_initiator_tag = GObject.timeout_add(
989
960
int(self.timeout.total_seconds() * 1000), self.disable)
990
961
# Also start a new checker *right now*.
991
962
self.start_checker()
992
963
993
964
def checker_callback(self, source, condition, connection,
994
965
command):
995
966
"""The checker has completed, so take appropriate actions."""
998
969
# Read return code from connection (see call_pipe)
999
970
returncode = connection.recv()
1000
971
connection.close()
1001
972
1002
973
if returncode >= 0:
1003
974
self.last_checker_status = returncode
1004
975
self.last_checker_signal = None
1014
985
logger.warning("Checker for %(name)s crashed?",
1015
986
vars(self))
1016
987
return False
1017
988
1018
989
def checked_ok(self):
1019
990
"""Assert that the client has been seen, alive and well."""
1020
991
self.last_checked_ok = datetime.datetime.utcnow()
1021
992
self.last_checker_status = 0
1022
993
self.last_checker_signal = None
1023
994
self.bump_timeout()
1024
995
1025
996
def bump_timeout(self, timeout=None):
1026
997
"""Bump up the timeout for this client."""
1027
998
if timeout is None:
1028
999
timeout = self.timeout
1029
1000
if self.disable_initiator_tag is not None:
1030
GLib.source_remove(self.disable_initiator_tag)
1001
GObject.source_remove(self.disable_initiator_tag)
1031
1002
self.disable_initiator_tag = None
1032
1003
if getattr(self, "enabled", False):
1033
self.disable_initiator_tag = GLib.timeout_add(
1004
self.disable_initiator_tag = GObject.timeout_add(
1034
1005
int(timeout.total_seconds() * 1000), self.disable)
1035
1006
self.expires = datetime.datetime.utcnow() + timeout
1036
1007
1037
1008
def need_approval(self):
1038
1009
self.last_approval_request = datetime.datetime.utcnow()
1039
1010
1040
1011
def start_checker(self):
1041
1012
"""Start a new checker subprocess if one is not running.
1042
1013
1043
1014
If a checker already exists, leave it running and do
1044
1015
nothing."""
1045
1016
# The reason for not killing a running checker is that if we
1050
1021
# checkers alone, the checker would have to take more time
1051
1022
# than 'timeout' for the client to be disabled, which is as it
1052
1023
# should be.
1053
1024
1054
1025
if self.checker is not None and not self.checker.is_alive():
1055
1026
logger.warning("Checker was not alive; joining")
1056
1027
self.checker.join()
1060
1031
# Escape attributes for the shell
1061
1032
escaped_attrs = {
1062
1033
attr: re.escape(str(getattr(self, attr)))
1063
for attr in self.runtime_expansions}
1034
for attr in self.runtime_expansions }
1064
1035
try:
1065
1036
command = self.checker_command % escaped_attrs
1066
1037
except TypeError as error:
1078
1049
# The exception is when not debugging but nevertheless
1079
1050
# running in the foreground; use the previously
1080
1051
# created wnull.
1081
popen_args = {"close_fds": True,
1082
"shell": True,
1083
"cwd": "/"}
1052
popen_args = { "close_fds": True,
1053
"shell": True,
1054
"cwd": "/" }
1084
1055
if (not self.server_settings["debug"]
1085
1056
and self.server_settings["foreground"]):
1086
1057
popen_args.update({"stdout": wnull,
1087
"stderr": wnull})
1088
pipe = multiprocessing.Pipe(duplex=False)
1058
"stderr": wnull })
1059
pipe = multiprocessing.Pipe(duplex = False)
1089
1060
self.checker = multiprocessing.Process(
1090
target=call_pipe,
1091
args=(pipe[1], subprocess.call, command),
1092
kwargs=popen_args)
1061
target = call_pipe,
1062
args = (pipe[1], subprocess.call, command),
1063
kwargs = popen_args)
1093
1064
self.checker.start()
1094
self.checker_callback_tag = GLib.io_add_watch(
1095
pipe[0].fileno(), GLib.IO_IN,
1065
self.checker_callback_tag = GObject.io_add_watch(
1066
pipe[0].fileno(), GObject.IO_IN,
1096
1067
self.checker_callback, pipe[0], command)
1097
# Re-run this periodically if run by GLib.timeout_add
1068
# Re-run this periodically if run by GObject.timeout_add
1098
1069
return True
1099
1070
1100
1071
def stop_checker(self):
1101
1072
"""Force the checker process, if any, to stop."""
1102
1073
if self.checker_callback_tag:
1103
GLib.source_remove(self.checker_callback_tag)
1074
GObject.source_remove(self.checker_callback_tag)
1104
1075
self.checker_callback_tag = None
1105
1076
if getattr(self, "checker", None) is None:
1106
1077
return
1115
1086
byte_arrays=False):
1116
1087
"""Decorators for marking methods of a DBusObjectWithProperties to
1117
1088
become properties on the D-Bus.
1118
1089
1119
1090
The decorated method will be called with no arguments by "Get"
1120
1091
and with one argument by "Set".
1121
1092
1122
1093
The parameters, where they are supported, are the same as
1123
1094
dbus.service.method, except there is only "signature", since the
1124
1095
type from Get() and the type sent to Set() is the same.
1128
1099
if byte_arrays and signature != "ay":
1129
1100
raise ValueError("Byte arrays not supported for non-'ay'"
1130
1101
" signature {!r}".format(signature))
1131
1102
1132
1103
def decorator(func):
1133
1104
func._dbus_is_property = True
1134
1105
func._dbus_interface = dbus_interface
1137
1108
func._dbus_name = func.__name__
1138
1109
if func._dbus_name.endswith("_dbus_property"):
1139
1110
func._dbus_name = func._dbus_name[:-14]
1140
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1111
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1141
1112
return func
1142
1113
1143
1114
return decorator
1144
1115
1145
1116
1146
1117
def dbus_interface_annotations(dbus_interface):
1147
1118
"""Decorator for marking functions returning interface annotations
1148
1119
1149
1120
Usage:
1150
1121
1151
1122
@dbus_interface_annotations("org.example.Interface")
1152
1123
def _foo(self): # Function name does not matter
1153
1124
return {"org.freedesktop.DBus.Deprecated": "true",
1154
1125
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1155
1126
"false"}
1156
1127
"""
1157
1128
1158
1129
def decorator(func):
1159
1130
func._dbus_is_interface = True
1160
1131
func._dbus_interface = dbus_interface
1161
1132
func._dbus_name = dbus_interface
1162
1133
return func
1163
1134
1164
1135
return decorator
1165
1136
1166
1137
1167
1138
def dbus_annotations(annotations):
1168
1139
"""Decorator to annotate D-Bus methods, signals or properties
1169
1140
Usage:
1170
1141
1171
1142
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1172
1143
"org.freedesktop.DBus.Property."
1173
1144
"EmitsChangedSignal": "false"})
1175
1146
access="r")
1176
1147
def Property_dbus_property(self):
1177
1148
return dbus.Boolean(False)
1178
1149
1179
1150
See also the DBusObjectWithAnnotations class.
1180
1151
"""
1181
1152
1182
1153
def decorator(func):
1183
1154
func._dbus_annotations = annotations
1184
1155
return func
1185
1156
1186
1157
return decorator
1187
1158
1188
1159
1206
1177
1207
1178
class DBusObjectWithAnnotations(dbus.service.Object):
1208
1179
"""A D-Bus object with annotations.
1209
1180
1210
1181
Classes inheriting from this can use the dbus_annotations
1211
1182
decorator to add annotations to methods or signals.
1212
1183
"""
1213
1184
1214
1185
@staticmethod
1215
1186
def _is_dbus_thing(thing):
1216
1187
"""Returns a function testing if an attribute is a D-Bus thing
1217
1188
1218
1189
If called like _is_dbus_thing("method") it returns a function
1219
1190
suitable for use as predicate to inspect.getmembers().
1220
1191
"""
1221
1192
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1222
1193
False)
1223
1194
1224
1195
def _get_all_dbus_things(self, thing):
1225
1196
"""Returns a generator of (name, attribute) pairs
1226
1197
"""
1229
1200
for cls in self.__class__.__mro__
1230
1201
for name, athing in
1231
1202
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1232
1203
1233
1204
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1234
out_signature="s",
1235
path_keyword='object_path',
1236
connection_keyword='connection')
1205
out_signature = "s",
1206
path_keyword = 'object_path',
1207
connection_keyword = 'connection')
1237
1208
def Introspect(self, object_path, connection):
1238
1209
"""Overloading of standard D-Bus method.
1239
1210
1240
1211
Inserts annotation tags on methods and signals.
1241
1212
"""
1242
1213
xmlstring = dbus.service.Object.Introspect(self, object_path,
1243
1214
connection)
1244
1215
try:
1245
1216
document = xml.dom.minidom.parseString(xmlstring)
1246
1217
1247
1218
for if_tag in document.getElementsByTagName("interface"):
1248
1219
# Add annotation tags
1249
1220
for typ in ("method", "signal"):
1276
1247
if_tag.appendChild(ann_tag)
1277
1248
# Fix argument name for the Introspect method itself
1278
1249
if (if_tag.getAttribute("name")
1279
== dbus.INTROSPECTABLE_IFACE):
1250
== dbus.INTROSPECTABLE_IFACE):
1280
1251
for cn in if_tag.getElementsByTagName("method"):
1281
1252
if cn.getAttribute("name") == "Introspect":
1282
1253
for arg in cn.getElementsByTagName("arg"):
1295
1266
1296
1267
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1297
1268
"""A D-Bus object with properties.
1298
1269
1299
1270
Classes inheriting from this can use the dbus_service_property
1300
1271
decorator to expose methods as D-Bus properties. It exposes the
1301
1272
standard Get(), Set(), and GetAll() methods on the D-Bus.
1302
1273
"""
1303
1274
1304
1275
def _get_dbus_property(self, interface_name, property_name):
1305
1276
"""Returns a bound method if one exists which is a D-Bus
1306
1277
property with the specified name and interface.
1311
1282
if (value._dbus_name == property_name
1312
1283
and value._dbus_interface == interface_name):
1313
1284
return value.__get__(self)
1314
1285
1315
1286
# No such property
1316
1287
raise DBusPropertyNotFound("{}:{}.{}".format(
1317
1288
self.dbus_object_path, interface_name, property_name))
1318
1289
1319
1290
@classmethod
1320
1291
def _get_all_interface_names(cls):
1321
1292
"""Get a sequence of all interfaces supported by an object"""
1324
1295
for x in (inspect.getmro(cls))
1325
1296
for attr in dir(x))
1326
1297
if name is not None)
1327
1298
1328
1299
@dbus.service.method(dbus.PROPERTIES_IFACE,
1329
1300
in_signature="ss",
1330
1301
out_signature="v")
1338
1309
if not hasattr(value, "variant_level"):
1339
1310
return value
1340
1311
return type(value)(value, variant_level=value.variant_level+1)
1341
1312
1342
1313
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1343
1314
def Set(self, interface_name, property_name, value):
1344
1315
"""Standard D-Bus property Set() method, see D-Bus standard.
1356
1327
value = dbus.ByteArray(b''.join(chr(byte)
1357
1328
for byte in value))
1358
1329
prop(value)
1359
1330
1360
1331
@dbus.service.method(dbus.PROPERTIES_IFACE,
1361
1332
in_signature="s",
1362
1333
out_signature="a{sv}")
1363
1334
def GetAll(self, interface_name):
1364
1335
"""Standard D-Bus property GetAll() method, see D-Bus
1365
1336
standard.
1366
1337
1367
1338
Note: Will not include properties with access="write".
1368
1339
"""
1369
1340
properties = {}
1380
1351
properties[name] = value
1381
1352
continue
1382
1353
properties[name] = type(value)(
1383
value, variant_level=value.variant_level + 1)
1354
value, variant_level = value.variant_level + 1)
1384
1355
return dbus.Dictionary(properties, signature="sv")
1385
1356
1386
1357
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1387
1358
def PropertiesChanged(self, interface_name, changed_properties,
1388
1359
invalidated_properties):
1390
1361
standard.
1391
1362
"""
1392
1363
pass
1393
1364
1394
1365
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1395
1366
out_signature="s",
1396
1367
path_keyword='object_path',
1397
1368
connection_keyword='connection')
1398
1369
def Introspect(self, object_path, connection):
1399
1370
"""Overloading of standard D-Bus method.
1400
1371
1401
1372
Inserts property tags and interface annotation tags.
1402
1373
"""
1403
1374
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1405
1376
connection)
1406
1377
try:
1407
1378
document = xml.dom.minidom.parseString(xmlstring)
1408
1379
1409
1380
def make_tag(document, name, prop):
1410
1381
e = document.createElement("property")
1411
1382
e.setAttribute("name", name)
1412
1383
e.setAttribute("type", prop._dbus_signature)
1413
1384
e.setAttribute("access", prop._dbus_access)
1414
1385
return e
1415
1386
1416
1387
for if_tag in document.getElementsByTagName("interface"):
1417
1388
# Add property tags
1418
1389
for tag in (make_tag(document, name, prop)
1460
1431
exc_info=error)
1461
1432
return xmlstring
1462
1433
1463
1464
1434
try:
1465
1435
dbus.OBJECT_MANAGER_IFACE
1466
1436
except AttributeError:
1467
1437
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1468
1438
1469
1470
1439
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1471
1440
"""A D-Bus object with an ObjectManager.
1472
1441
1473
1442
Classes inheriting from this exposes the standard
1474
1443
GetManagedObjects call and the InterfacesAdded and
1475
1444
InterfacesRemoved signals on the standard
1476
1445
"org.freedesktop.DBus.ObjectManager" interface.
1477
1446
1478
1447
Note: No signals are sent automatically; they must be sent
1479
1448
manually.
1480
1449
"""
1481
1450
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1482
out_signature="a{oa{sa{sv}}}")
1451
out_signature = "a{oa{sa{sv}}}")
1483
1452
def GetManagedObjects(self):
1484
1453
"""This function must be overridden"""
1485
1454
raise NotImplementedError()
1486
1455
1487
1456
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1488
signature="oa{sa{sv}}")
1457
signature = "oa{sa{sv}}")
1489
1458
def InterfacesAdded(self, object_path, interfaces_and_properties):
1490
1459
pass
1491
1492
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1460
1461
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1493
1462
def InterfacesRemoved(self, object_path, interfaces):
1494
1463
pass
1495
1464
1496
1465
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1497
out_signature="s",
1498
path_keyword='object_path',
1499
connection_keyword='connection')
1466
out_signature = "s",
1467
path_keyword = 'object_path',
1468
connection_keyword = 'connection')
1500
1469
def Introspect(self, object_path, connection):
1501
1470
"""Overloading of standard D-Bus method.
1502
1471
1503
1472
Override return argument name of GetManagedObjects to be
1504
1473
"objpath_interfaces_and_properties"
1505
1474
"""
1508
1477
connection)
1509
1478
try:
1510
1479
document = xml.dom.minidom.parseString(xmlstring)
1511
1480
1512
1481
for if_tag in document.getElementsByTagName("interface"):
1513
1482
# Fix argument name for the GetManagedObjects method
1514
1483
if (if_tag.getAttribute("name")
1515
== dbus.OBJECT_MANAGER_IFACE):
1484
== dbus.OBJECT_MANAGER_IFACE):
1516
1485
for cn in if_tag.getElementsByTagName("method"):
1517
1486
if (cn.getAttribute("name")
1518
1487
== "GetManagedObjects"):
1528
1497
except (AttributeError, xml.dom.DOMException,
1529
1498
xml.parsers.expat.ExpatError) as error:
1530
1499
logger.error("Failed to override Introspection method",
1531
exc_info=error)
1500
exc_info = error)
1532
1501
return xmlstring
1533
1502
1534
1535
1503
def datetime_to_dbus(dt, variant_level=0):
1536
1504
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1537
1505
if dt is None:
1538
return dbus.String("", variant_level=variant_level)
1506
return dbus.String("", variant_level = variant_level)
1539
1507
return dbus.String(dt.isoformat(), variant_level=variant_level)
1540
1508
1541
1509
1544
1512
dbus.service.Object, it will add alternate D-Bus attributes with
1545
1513
interface names according to the "alt_interface_names" mapping.
1546
1514
Usage:
1547
1515
1548
1516
@alternate_dbus_interfaces({"org.example.Interface":
1549
1517
"net.example.AlternateInterface"})
1550
1518
class SampleDBusObject(dbus.service.Object):
1551
1519
@dbus.service.method("org.example.Interface")
1552
1520
def SampleDBusMethod():
1553
1521
pass
1554
1522
1555
1523
The above "SampleDBusMethod" on "SampleDBusObject" will be
1556
1524
reachable via two interfaces: "org.example.Interface" and
1557
1525
"net.example.AlternateInterface", the latter of which will have
1558
1526
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1559
1527
"true", unless "deprecate" is passed with a False value.
1560
1528
1561
1529
This works for methods and signals, and also for D-Bus properties
1562
1530
(from DBusObjectWithProperties) and interfaces (from the
1563
1531
dbus_interface_annotations decorator).
1564
1532
"""
1565
1533
1566
1534
def wrapper(cls):
1567
1535
for orig_interface_name, alt_interface_name in (
1568
1536
alt_interface_names.items()):
1608
1576
attribute._dbus_annotations)
1609
1577
except AttributeError:
1610
1578
pass
1611
1612
1579
# Define a creator of a function to call both the
1613
1580
# original and alternate functions, so both the
1614
1581
# original and alternate signals gets sent when
1617
1584
"""This function is a scope container to pass
1618
1585
func1 and func2 to the "call_both" function
1619
1586
outside of its arguments"""
1620
1587
1621
1588
@functools.wraps(func2)
1622
1589
def call_both(*args, **kwargs):
1623
1590
"""This function will emit two D-Bus
1624
1591
signals by calling func1 and func2"""
1625
1592
func1(*args, **kwargs)
1626
1593
func2(*args, **kwargs)
1627
# Make wrapper function look like a D-Bus
1628
# signal
1594
# Make wrapper function look like a D-Bus signal
1629
1595
for name, attr in inspect.getmembers(func2):
1630
1596
if name.startswith("_dbus_"):
1631
1597
setattr(call_both, name, attr)
1632
1598
1633
1599
return call_both
1634
1600
# Create the "call_both" function and add it to
1635
1601
# the class
1681
1647
(copy_function(attribute)))
1682
1648
if deprecate:
1683
1649
# Deprecate all alternate interfaces
1684
iname = "_AlternateDBusNames_interface_annotation{}"
1650
iname="_AlternateDBusNames_interface_annotation{}"
1685
1651
for interface_name in interface_names:
1686
1652
1687
1653
@dbus_interface_annotations(interface_name)
1688
1654
def func(self):
1689
return {"org.freedesktop.DBus.Deprecated":
1690
"true"}
1655
return { "org.freedesktop.DBus.Deprecated":
1656
"true" }
1691
1657
# Find an unused name
1692
1658
for aname in (iname.format(i)
1693
1659
for i in itertools.count()):
1704
1670
cls = type("{}Alternate".format(cls.__name__),
1705
1671
(cls, ), attr)
1706
1672
return cls
1707
1673
1708
1674
return wrapper
1709
1675
1710
1676
1712
1678
"se.bsnet.fukt.Mandos"})
1713
1679
class ClientDBus(Client, DBusObjectWithProperties):
1714
1680
"""A Client class using D-Bus
1715
1681
1716
1682
Attributes:
1717
1683
dbus_object_path: dbus.ObjectPath
1718
1684
bus: dbus.SystemBus()
1719
1685
"""
1720
1686
1721
1687
runtime_expansions = (Client.runtime_expansions
1722
1688
+ ("dbus_object_path", ))
1723
1689
1724
1690
_interface = "se.recompile.Mandos.Client"
1725
1691
1726
1692
# dbus.service.Object doesn't use super(), so we can't either.
1727
1728
def __init__(self, bus=None, *args, **kwargs):
1693
1694
def __init__(self, bus = None, *args, **kwargs):
1729
1695
self.bus = bus
1730
1696
Client.__init__(self, *args, **kwargs)
1731
1697
# Only now, when this client is initialized, can it show up on
1737
1703
"/clients/" + client_object_name)
1738
1704
DBusObjectWithProperties.__init__(self, self.bus,
1739
1705
self.dbus_object_path)
1740
1706
1741
1707
def notifychangeproperty(transform_func, dbus_name,
1742
1708
type_func=lambda x: x,
1743
1709
variant_level=1,
1745
1711
_interface=_interface):
1746
1712
""" Modify a variable so that it's a property which announces
1747
1713
its changes to DBus.
1748
1714
1749
1715
transform_fun: Function that takes a value and a variant_level
1750
1716
and transforms it to a D-Bus type.
1751
1717
dbus_name: D-Bus name of the variable
1754
1720
variant_level: D-Bus variant level. Default: 1
1755
1721
"""
1756
1722
attrname = "_{}".format(dbus_name)
1757
1723
1758
1724
def setter(self, value):
1759
1725
if hasattr(self, "dbus_object_path"):
1760
1726
if (not hasattr(self, attrname) or
1767
1733
else:
1768
1734
dbus_value = transform_func(
1769
1735
type_func(value),
1770
variant_level=variant_level)
1736
variant_level = variant_level)
1771
1737
self.PropertyChanged(dbus.String(dbus_name),
1772
1738
dbus_value)
1773
1739
self.PropertiesChanged(
1774
1740
_interface,
1775
dbus.Dictionary({dbus.String(dbus_name):
1776
dbus_value}),
1741
dbus.Dictionary({ dbus.String(dbus_name):
1742
dbus_value }),
1777
1743
dbus.Array())
1778
1744
setattr(self, attrname, value)
1779
1745
1780
1746
return property(lambda self: getattr(self, attrname), setter)
1781
1747
1782
1748
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1783
1749
approvals_pending = notifychangeproperty(dbus.Boolean,
1784
1750
"ApprovalPending",
1785
type_func=bool)
1751
type_func = bool)
1786
1752
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1787
1753
last_enabled = notifychangeproperty(datetime_to_dbus,
1788
1754
"LastEnabled")
1789
1755
checker = notifychangeproperty(
1790
1756
dbus.Boolean, "CheckerRunning",
1791
type_func=lambda checker: checker is not None)
1757
type_func = lambda checker: checker is not None)
1792
1758
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1793
1759
"LastCheckedOK")
1794
1760
last_checker_status = notifychangeproperty(dbus.Int16,
1799
1765
"ApprovedByDefault")
1800
1766
approval_delay = notifychangeproperty(
1801
1767
dbus.UInt64, "ApprovalDelay",
1802
type_func=lambda td: td.total_seconds() * 1000)
1768
type_func = lambda td: td.total_seconds() * 1000)
1803
1769
approval_duration = notifychangeproperty(
1804
1770
dbus.UInt64, "ApprovalDuration",
1805
type_func=lambda td: td.total_seconds() * 1000)
1771
type_func = lambda td: td.total_seconds() * 1000)
1806
1772
host = notifychangeproperty(dbus.String, "Host")
1807
1773
timeout = notifychangeproperty(
1808
1774
dbus.UInt64, "Timeout",
1809
type_func=lambda td: td.total_seconds() * 1000)
1775
type_func = lambda td: td.total_seconds() * 1000)
1810
1776
extended_timeout = notifychangeproperty(
1811
1777
dbus.UInt64, "ExtendedTimeout",
1812
type_func=lambda td: td.total_seconds() * 1000)
1778
type_func = lambda td: td.total_seconds() * 1000)
1813
1779
interval = notifychangeproperty(
1814
1780
dbus.UInt64, "Interval",
1815
type_func=lambda td: td.total_seconds() * 1000)
1781
type_func = lambda td: td.total_seconds() * 1000)
1816
1782
checker_command = notifychangeproperty(dbus.String, "Checker")
1817
1783
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1818
1784
invalidate_only=True)
1819
1785
1820
1786
del notifychangeproperty
1821
1787
1822
1788
def __del__(self, *args, **kwargs):
1823
1789
try:
1824
1790
self.remove_from_connection()
1827
1793
if hasattr(DBusObjectWithProperties, "__del__"):
1828
1794
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1829
1795
Client.__del__(self, *args, **kwargs)
1830
1796
1831
1797
def checker_callback(self, source, condition,
1832
1798
connection, command, *args, **kwargs):
1833
1799
ret = Client.checker_callback(self, source, condition,
1849
1815
| self.last_checker_signal),
1850
1816
dbus.String(command))
1851
1817
return ret
1852
1818
1853
1819
def start_checker(self, *args, **kwargs):
1854
1820
old_checker_pid = getattr(self.checker, "pid", None)
1855
1821
r = Client.start_checker(self, *args, **kwargs)
1859
1825
# Emit D-Bus signal
1860
1826
self.CheckerStarted(self.current_checker_command)
1861
1827
return r
1862
1828
1863
1829
def _reset_approved(self):
1864
1830
self.approved = None
1865
1831
return False
1866
1832
1867
1833
def approve(self, value=True):
1868
1834
self.approved = value
1869
GLib.timeout_add(int(self.approval_duration.total_seconds()
1870
* 1000), self._reset_approved)
1835
GObject.timeout_add(int(self.approval_duration.total_seconds()
1836
* 1000), self._reset_approved)
1871
1837
self.send_changedstate()
1872
1873
# D-Bus methods, signals & properties
1874
1875
# Interfaces
1876
1877
# Signals
1878
1838
1839
## D-Bus methods, signals & properties
1840
1841
## Interfaces
1842
1843
## Signals
1844
1879
1845
# CheckerCompleted - signal
1880
1846
@dbus.service.signal(_interface, signature="nxs")
1881
1847
def CheckerCompleted(self, exitcode, waitstatus, command):
1882
1848
"D-Bus signal"
1883
1849
pass
1884
1850
1885
1851
# CheckerStarted - signal
1886
1852
@dbus.service.signal(_interface, signature="s")
1887
1853
def CheckerStarted(self, command):
1888
1854
"D-Bus signal"
1889
1855
pass
1890
1856
1891
1857
# PropertyChanged - signal
1892
1858
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1893
1859
@dbus.service.signal(_interface, signature="sv")
1894
1860
def PropertyChanged(self, property, value):
1895
1861
"D-Bus signal"
1896
1862
pass
1897
1863
1898
1864
# GotSecret - signal
1899
1865
@dbus.service.signal(_interface)
1900
1866
def GotSecret(self):
1903
1869
server to mandos-client
1904
1870
"""
1905
1871
pass
1906
1872
1907
1873
# Rejected - signal
1908
1874
@dbus.service.signal(_interface, signature="s")
1909
1875
def Rejected(self, reason):
1910
1876
"D-Bus signal"
1911
1877
pass
1912
1878
1913
1879
# NeedApproval - signal
1914
1880
@dbus.service.signal(_interface, signature="tb")
1915
1881
def NeedApproval(self, timeout, default):
1916
1882
"D-Bus signal"
1917
1883
return self.need_approval()
1918
1919
# Methods
1920
1884
1885
## Methods
1886
1921
1887
# Approve - method
1922
1888
@dbus.service.method(_interface, in_signature="b")
1923
1889
def Approve(self, value):
1924
1890
self.approve(value)
1925
1891
1926
1892
# CheckedOK - method
1927
1893
@dbus.service.method(_interface)
1928
1894
def CheckedOK(self):
1929
1895
self.checked_ok()
1930
1896
1931
1897
# Enable - method
1932
1898
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1933
1899
@dbus.service.method(_interface)
1934
1900
def Enable(self):
1935
1901
"D-Bus method"
1936
1902
self.enable()
1937
1903
1938
1904
# StartChecker - method
1939
1905
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1940
1906
@dbus.service.method(_interface)
1941
1907
def StartChecker(self):
1942
1908
"D-Bus method"
1943
1909
self.start_checker()
1944
1910
1945
1911
# Disable - method
1946
1912
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1947
1913
@dbus.service.method(_interface)
1948
1914
def Disable(self):
1949
1915
"D-Bus method"
1950
1916
self.disable()
1951
1917
1952
1918
# StopChecker - method
1953
1919
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1954
1920
@dbus.service.method(_interface)
1955
1921
def StopChecker(self):
1956
1922
self.stop_checker()
1957
1958
# Properties
1959
1923
1924
## Properties
1925
1960
1926
# ApprovalPending - property
1961
1927
@dbus_service_property(_interface, signature="b", access="read")
1962
1928
def ApprovalPending_dbus_property(self):
1963
1929
return dbus.Boolean(bool(self.approvals_pending))
1964
1930
1965
1931
# ApprovedByDefault - property
1966
1932
@dbus_service_property(_interface,
1967
1933
signature="b",
1970
1936
if value is None: # get
1971
1937
return dbus.Boolean(self.approved_by_default)
1972
1938
self.approved_by_default = bool(value)
1973
1939
1974
1940
# ApprovalDelay - property
1975
1941
@dbus_service_property(_interface,
1976
1942
signature="t",
1980
1946
return dbus.UInt64(self.approval_delay.total_seconds()
1981
1947
* 1000)
1982
1948
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1983
1949
1984
1950
# ApprovalDuration - property
1985
1951
@dbus_service_property(_interface,
1986
1952
signature="t",
1990
1956
return dbus.UInt64(self.approval_duration.total_seconds()
1991
1957
* 1000)
1992
1958
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1993
1959
1994
1960
# Name - property
1995
1961
@dbus_annotations(
1996
1962
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1997
1963
@dbus_service_property(_interface, signature="s", access="read")
1998
1964
def Name_dbus_property(self):
1999
1965
return dbus.String(self.name)
2000
1966
2001
1967
# Fingerprint - property
2002
1968
@dbus_annotations(
2003
1969
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2004
1970
@dbus_service_property(_interface, signature="s", access="read")
2005
1971
def Fingerprint_dbus_property(self):
2006
1972
return dbus.String(self.fingerprint)
2007
1973
2008
1974
# Host - property
2009
1975
@dbus_service_property(_interface,
2010
1976
signature="s",
2013
1979
if value is None: # get
2014
1980
return dbus.String(self.host)
2015
1981
self.host = str(value)
2016
1982
2017
1983
# Created - property
2018
1984
@dbus_annotations(
2019
1985
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2020
1986
@dbus_service_property(_interface, signature="s", access="read")
2021
1987
def Created_dbus_property(self):
2022
1988
return datetime_to_dbus(self.created)
2023
1989
2024
1990
# LastEnabled - property
2025
1991
@dbus_service_property(_interface, signature="s", access="read")
2026
1992
def LastEnabled_dbus_property(self):
2027
1993
return datetime_to_dbus(self.last_enabled)
2028
1994
2029
1995
# Enabled - property
2030
1996
@dbus_service_property(_interface,
2031
1997
signature="b",
2037
2003
self.enable()
2038
2004
else:
2039
2005
self.disable()
2040
2006
2041
2007
# LastCheckedOK - property
2042
2008
@dbus_service_property(_interface,
2043
2009
signature="s",
2047
2013
self.checked_ok()
2048
2014
return
2049
2015
return datetime_to_dbus(self.last_checked_ok)
2050
2016
2051
2017
# LastCheckerStatus - property
2052
2018
@dbus_service_property(_interface, signature="n", access="read")
2053
2019
def LastCheckerStatus_dbus_property(self):
2054
2020
return dbus.Int16(self.last_checker_status)
2055
2021
2056
2022
# Expires - property
2057
2023
@dbus_service_property(_interface, signature="s", access="read")
2058
2024
def Expires_dbus_property(self):
2059
2025
return datetime_to_dbus(self.expires)
2060
2026
2061
2027
# LastApprovalRequest - property
2062
2028
@dbus_service_property(_interface, signature="s", access="read")
2063
2029
def LastApprovalRequest_dbus_property(self):
2064
2030
return datetime_to_dbus(self.last_approval_request)
2065
2031
2066
2032
# Timeout - property
2067
2033
@dbus_service_property(_interface,
2068
2034
signature="t",
2083
2049
if (getattr(self, "disable_initiator_tag", None)
2084
2050
is None):
2085
2051
return
2086
GLib.source_remove(self.disable_initiator_tag)
2087
self.disable_initiator_tag = GLib.timeout_add(
2052
GObject.source_remove(self.disable_initiator_tag)
2053
self.disable_initiator_tag = GObject.timeout_add(
2088
2054
int((self.expires - now).total_seconds() * 1000),
2089
2055
self.disable)
2090
2056
2091
2057
# ExtendedTimeout - property
2092
2058
@dbus_service_property(_interface,
2093
2059
signature="t",
2097
2063
return dbus.UInt64(self.extended_timeout.total_seconds()
2098
2064
* 1000)
2099
2065
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2100
2066
2101
2067
# Interval - property
2102
2068
@dbus_service_property(_interface,
2103
2069
signature="t",
2110
2076
return
2111
2077
if self.enabled:
2112
2078
# Reschedule checker run
2113
GLib.source_remove(self.checker_initiator_tag)
2114
self.checker_initiator_tag = GLib.timeout_add(
2079
GObject.source_remove(self.checker_initiator_tag)
2080
self.checker_initiator_tag = GObject.timeout_add(
2115
2081
value, self.start_checker)
2116
self.start_checker() # Start one now, too
2117
2082
self.start_checker() # Start one now, too
2083
2118
2084
# Checker - property
2119
2085
@dbus_service_property(_interface,
2120
2086
signature="s",
2123
2089
if value is None: # get
2124
2090
return dbus.String(self.checker_command)
2125
2091
self.checker_command = str(value)
2126
2092
2127
2093
# CheckerRunning - property
2128
2094
@dbus_service_property(_interface,
2129
2095
signature="b",
2135
2101
self.start_checker()
2136
2102
else:
2137
2103
self.stop_checker()
2138
2104
2139
2105
# ObjectPath - property
2140
2106
@dbus_annotations(
2141
2107
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2142
2108
"org.freedesktop.DBus.Deprecated": "true"})
2143
2109
@dbus_service_property(_interface, signature="o", access="read")
2144
2110
def ObjectPath_dbus_property(self):
2145
return self.dbus_object_path # is already a dbus.ObjectPath
2146
2111
return self.dbus_object_path # is already a dbus.ObjectPath
2112
2147
2113
# Secret = property
2148
2114
@dbus_annotations(
2149
2115
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2154
2120
byte_arrays=True)
2155
2121
def Secret_dbus_property(self, value):
2156
2122
self.secret = bytes(value)
2157
2123
2158
2124
del _interface
2159
2125
2160
2126
2164
2130
self._pipe.send(('init', fpr, address))
2165
2131
if not self._pipe.recv():
2166
2132
raise KeyError(fpr)
2167
2133
2168
2134
def __getattribute__(self, name):
2169
2135
if name == '_pipe':
2170
2136
return super(ProxyClient, self).__getattribute__(name)
2173
2139
if data[0] == 'data':
2174
2140
return data[1]
2175
2141
if data[0] == 'function':
2176
2142
2177
2143
def func(*args, **kwargs):
2178
2144
self._pipe.send(('funcall', name, args, kwargs))
2179
2145
return self._pipe.recv()[1]
2180
2146
2181
2147
return func
2182
2148
2183
2149
def __setattr__(self, name, value):
2184
2150
if name == '_pipe':
2185
2151
return super(ProxyClient, self).__setattr__(name, value)
2188
2154
2189
2155
class ClientHandler(socketserver.BaseRequestHandler, object):
2190
2156
"""A class to handle client connections.
2191
2157
2192
2158
Instantiated once for each connection to handle it.
2193
2159
Note: This will run in its own forked process."""
2194
2160
2195
2161
def handle(self):
2196
2162
with contextlib.closing(self.server.child_pipe) as child_pipe:
2197
2163
logger.info("TCP connection from: %s",
2198
2164
str(self.client_address))
2199
2165
logger.debug("Pipe FD: %d",
2200
2166
self.server.child_pipe.fileno())
2201
2167
2202
2168
session = gnutls.ClientSession(self.request)
2203
2204
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2205
# "+AES-256-CBC", "+SHA1",
2206
# "+COMP-NULL", "+CTYPE-OPENPGP",
2207
# "+DHE-DSS"))
2169
2170
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2171
# "+AES-256-CBC", "+SHA1",
2172
# "+COMP-NULL", "+CTYPE-OPENPGP",
2173
# "+DHE-DSS"))
2208
2174
# Use a fallback default, since this MUST be set.
2209
2175
priority = self.server.gnutls_priority
2210
2176
if priority is None:
2211
2177
priority = "NORMAL"
2212
gnutls.priority_set_direct(session._c_object,
2213
priority.encode("utf-8"),
2178
gnutls.priority_set_direct(session._c_object, priority,
2214
2179
None)
2215
2180
2216
2181
# Start communication using the Mandos protocol
2217
2182
# Get protocol number
2218
2183
line = self.request.makefile().readline()
2223
2188
except (ValueError, IndexError, RuntimeError) as error:
2224
2189
logger.error("Unknown protocol version: %s", error)
2225
2190
return
2226
2191
2227
2192
# Start GnuTLS connection
2228
2193
try:
2229
2194
session.handshake()
2233
2198
# established. Just abandon the request.
2234
2199
return
2235
2200
logger.debug("Handshake succeeded")
2236
2201
2237
2202
approval_required = False
2238
2203
try:
2239
2204
try:
2243
2208
logger.warning("Bad certificate: %s", error)
2244
2209
return
2245
2210
logger.debug("Fingerprint: %s", fpr)
2246
2211
2247
2212
try:
2248
2213
client = ProxyClient(child_pipe, fpr,
2249
2214
self.client_address)
2250
2215
except KeyError:
2251
2216
return
2252
2217
2253
2218
if client.approval_delay:
2254
2219
delay = client.approval_delay
2255
2220
client.approvals_pending += 1
2256
2221
approval_required = True
2257
2222
2258
2223
while True:
2259
2224
if not client.enabled:
2260
2225
logger.info("Client %s is disabled",
2263
2228
# Emit D-Bus signal
2264
2229
client.Rejected("Disabled")
2265
2230
return
2266
2231
2267
2232
if client.approved or not client.approval_delay:
2268
# We are approved or approval is disabled
2233
#We are approved or approval is disabled
2269
2234
break
2270
2235
elif client.approved is None:
2271
2236
logger.info("Client %s needs approval",
2282
2247
# Emit D-Bus signal
2283
2248
client.Rejected("Denied")
2284
2249
return
2285
2286
# wait until timeout or approved
2250
2251
#wait until timeout or approved
2287
2252
time = datetime.datetime.now()
2288
2253
client.changedstate.acquire()
2289
2254
client.changedstate.wait(delay.total_seconds())
2302
2267
break
2303
2268
else:
2304
2269
delay -= time2 - time
2305
2270
2306
2271
try:
2307
2272
session.send(client.secret)
2308
2273
except gnutls.Error as error:
2309
2274
logger.warning("gnutls send failed",
2310
exc_info=error)
2275
exc_info = error)
2311
2276
return
2312
2277
2313
2278
logger.info("Sending secret to %s", client.name)
2314
2279
# bump the timeout using extended_timeout
2315
2280
client.bump_timeout(client.extended_timeout)
2316
2281
if self.server.use_dbus:
2317
2282
# Emit D-Bus signal
2318
2283
client.GotSecret()
2319
2284
2320
2285
finally:
2321
2286
if approval_required:
2322
2287
client.approvals_pending -= 1
2325
2290
except gnutls.Error as error:
2326
2291
logger.warning("GnuTLS bye failed",
2327
2292
exc_info=error)
2328
2293
2329
2294
@staticmethod
2330
2295
def peer_certificate(session):
2331
2296
"Return the peer's OpenPGP certificate as a bytestring"
2343
2308
return None
2344
2309
cert = cert_list[0]
2345
2310
return ctypes.string_at(cert.data, cert.size)
2346
2311
2347
2312
@staticmethod
2348
2313
def fingerprint(openpgp):
2349
2314
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2382
2347
2383
2348
class MultiprocessingMixIn(object):
2384
2349
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2385
2350
2386
2351
def sub_process_main(self, request, address):
2387
2352
try:
2388
2353
self.finish_request(request, address)
2389
2354
except Exception:
2390
2355
self.handle_error(request, address)
2391
2356
self.close_request(request)
2392
2357
2393
2358
def process_request(self, request, address):
2394
2359
"""Start a new process to process the request."""
2395
proc = multiprocessing.Process(target=self.sub_process_main,
2396
args=(request, address))
2360
proc = multiprocessing.Process(target = self.sub_process_main,
2361
args = (request, address))
2397
2362
proc.start()
2398
2363
return proc
2399
2364
2400
2365
2401
2366
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2402
2367
""" adds a pipe to the MixIn """
2403
2368
2404
2369
def process_request(self, request, client_address):
2405
2370
"""Overrides and wraps the original process_request().
2406
2371
2407
2372
This function creates a new pipe in self.pipe
2408
2373
"""
2409
2374
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2410
2375
2411
2376
proc = MultiprocessingMixIn.process_request(self, request,
2412
2377
client_address)
2413
2378
self.child_pipe.close()
2414
2379
self.add_pipe(parent_pipe, proc)
2415
2380
2416
2381
def add_pipe(self, parent_pipe, proc):
2417
2382
"""Dummy function; override as necessary"""
2418
2383
raise NotImplementedError()
2421
2386
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2422
2387
socketserver.TCPServer, object):
2423
2388
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2424
2389
2425
2390
Attributes:
2426
2391
enabled: Boolean; whether this server is activated yet
2427
2392
interface: None or a network interface name (string)
2428
2393
use_ipv6: Boolean; to use IPv6 or not
2429
2394
"""
2430
2395
2431
2396
def __init__(self, server_address, RequestHandlerClass,
2432
2397
interface=None,
2433
2398
use_ipv6=True,
2443
2408
self.socketfd = socketfd
2444
2409
# Save the original socket.socket() function
2445
2410
self.socket_socket = socket.socket
2446
2447
2411
# To implement --socket, we monkey patch socket.socket.
2448
#
2412
#
2449
2413
# (When socketserver.TCPServer is a new-style class, we
2450
2414
# could make self.socket into a property instead of monkey
2451
2415
# patching socket.socket.)
2452
#
2416
#
2453
2417
# Create a one-time-only replacement for socket.socket()
2454
2418
@functools.wraps(socket.socket)
2455
2419
def socket_wrapper(*args, **kwargs):
2467
2431
# socket_wrapper(), if socketfd was set.
2468
2432
socketserver.TCPServer.__init__(self, server_address,
2469
2433
RequestHandlerClass)
2470
2434
2471
2435
def server_bind(self):
2472
2436
"""This overrides the normal server_bind() function
2473
2437
to bind to an interface if one was specified, and also NOT to
2474
2438
bind to an address or port if they were not specified."""
2475
global SO_BINDTODEVICE
2476
2439
if self.interface is not None:
2477
2440
if SO_BINDTODEVICE is None:
2478
# Fall back to a hard-coded value which seems to be
2479
# common enough.
2480
logger.warning("SO_BINDTODEVICE not found, trying 25")
2481
SO_BINDTODEVICE = 25
2482
try:
2483
self.socket.setsockopt(
2484
socket.SOL_SOCKET, SO_BINDTODEVICE,
2485
(self.interface + "\0").encode("utf-8"))
2486
except socket.error as error:
2487
if error.errno == errno.EPERM:
2488
logger.error("No permission to bind to"
2489
" interface %s", self.interface)
2490
elif error.errno == errno.ENOPROTOOPT:
2491
logger.error("SO_BINDTODEVICE not available;"
2492
" cannot bind to interface %s",
2493
self.interface)
2494
elif error.errno == errno.ENODEV:
2495
logger.error("Interface %s does not exist,"
2496
" cannot bind", self.interface)
2497
else:
2498
raise
2441
logger.error("SO_BINDTODEVICE does not exist;"
2442
" cannot bind to interface %s",
2443
self.interface)
2444
else:
2445
try:
2446
self.socket.setsockopt(
2447
socket.SOL_SOCKET, SO_BINDTODEVICE,
2448
(self.interface + "\0").encode("utf-8"))
2449
except socket.error as error:
2450
if error.errno == errno.EPERM:
2451
logger.error("No permission to bind to"
2452
" interface %s", self.interface)
2453
elif error.errno == errno.ENOPROTOOPT:
2454
logger.error("SO_BINDTODEVICE not available;"
2455
" cannot bind to interface %s",
2456
self.interface)
2457
elif error.errno == errno.ENODEV:
2458
logger.error("Interface %s does not exist,"
2459
" cannot bind", self.interface)
2460
else:
2461
raise
2499
2462
# Only bind(2) the socket if we really need to.
2500
2463
if self.server_address[0] or self.server_address[1]:
2501
2464
if not self.server_address[0]:
2502
2465
if self.address_family == socket.AF_INET6:
2503
any_address = "::" # in6addr_any
2466
any_address = "::" # in6addr_any
2504
2467
else:
2505
any_address = "0.0.0.0" # INADDR_ANY
2468
any_address = "0.0.0.0" # INADDR_ANY
2506
2469
self.server_address = (any_address,
2507
2470
self.server_address[1])
2508
2471
elif not self.server_address[1]:
2518
2481
2519
2482
class MandosServer(IPv6_TCPServer):
2520
2483
"""Mandos server.
2521
2484
2522
2485
Attributes:
2523
2486
clients: set of Client objects
2524
2487
gnutls_priority GnuTLS priority string
2525
2488
use_dbus: Boolean; to emit D-Bus signals or not
2526
2527
Assumes a GLib.MainLoop event loop.
2489
2490
Assumes a GObject.MainLoop event loop.
2528
2491
"""
2529
2492
2530
2493
def __init__(self, server_address, RequestHandlerClass,
2531
2494
interface=None,
2532
2495
use_ipv6=True,
2542
2505
self.gnutls_priority = gnutls_priority
2543
2506
IPv6_TCPServer.__init__(self, server_address,
2544
2507
RequestHandlerClass,
2545
interface=interface,
2546
use_ipv6=use_ipv6,
2547
socketfd=socketfd)
2548
2508
interface = interface,
2509
use_ipv6 = use_ipv6,
2510
socketfd = socketfd)
2511
2549
2512
def server_activate(self):
2550
2513
if self.enabled:
2551
2514
return socketserver.TCPServer.server_activate(self)
2552
2515
2553
2516
def enable(self):
2554
2517
self.enabled = True
2555
2518
2556
2519
def add_pipe(self, parent_pipe, proc):
2557
2520
# Call "handle_ipc" for both data and EOF events
2558
GLib.io_add_watch(
2521
GObject.io_add_watch(
2559
2522
parent_pipe.fileno(),
2560
GLib.IO_IN | GLib.IO_HUP,
2523
GObject.IO_IN | GObject.IO_HUP,
2561
2524
functools.partial(self.handle_ipc,
2562
parent_pipe=parent_pipe,
2563
proc=proc))
2564
2525
parent_pipe = parent_pipe,
2526
proc = proc))
2527
2565
2528
def handle_ipc(self, source, condition,
2566
2529
parent_pipe=None,
2567
proc=None,
2530
proc = None,
2568
2531
client_object=None):
2569
2532
# error, or the other end of multiprocessing.Pipe has closed
2570
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2533
if condition & (GObject.IO_ERR | GObject.IO_HUP):
2571
2534
# Wait for other process to exit
2572
2535
proc.join()
2573
2536
return False
2574
2537
2575
2538
# Read a request from the child
2576
2539
request = parent_pipe.recv()
2577
2540
command = request[0]
2578
2541
2579
2542
if command == 'init':
2580
2543
fpr = request[1]
2581
2544
address = request[2]
2582
2545
2583
2546
for c in self.clients.values():
2584
2547
if c.fingerprint == fpr:
2585
2548
client = c
2593
2556
address[0])
2594
2557
parent_pipe.send(False)
2595
2558
return False
2596
2597
GLib.io_add_watch(
2559
2560
GObject.io_add_watch(
2598
2561
parent_pipe.fileno(),
2599
GLib.IO_IN | GLib.IO_HUP,
2562
GObject.IO_IN | GObject.IO_HUP,
2600
2563
functools.partial(self.handle_ipc,
2601
parent_pipe=parent_pipe,
2602
proc=proc,
2603
client_object=client))
2564
parent_pipe = parent_pipe,
2565
proc = proc,
2566
client_object = client))
2604
2567
parent_pipe.send(True)
2605
2568
# remove the old hook in favor of the new above hook on
2606
2569
# same fileno
2609
2572
funcname = request[1]
2610
2573
args = request[2]
2611
2574
kwargs = request[3]
2612
2575
2613
2576
parent_pipe.send(('data', getattr(client_object,
2614
2577
funcname)(*args,
2615
2578
**kwargs)))
2616
2579
2617
2580
if command == 'getattr':
2618
2581
attrname = request[1]
2619
2582
if isinstance(client_object.__getattribute__(attrname),
2622
2585
else:
2623
2586
parent_pipe.send((
2624
2587
'data', client_object.__getattribute__(attrname)))
2625
2588
2626
2589
if command == 'setattr':
2627
2590
attrname = request[1]
2628
2591
value = request[2]
2629
2592
setattr(client_object, attrname, value)
2630
2593
2631
2594
return True
2632
2595
2633
2596
2634
2597
def rfc3339_duration_to_delta(duration):
2635
2598
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2636
2599
2637
2600
>>> rfc3339_duration_to_delta("P7D")
2638
2601
datetime.timedelta(7)
2639
2602
>>> rfc3339_duration_to_delta("PT60S")
2649
2612
>>> rfc3339_duration_to_delta("P1DT3M20S")
2650
2613
datetime.timedelta(1, 200)
2651
2614
"""
2652
2615
2653
2616
# Parsing an RFC 3339 duration with regular expressions is not
2654
2617
# possible - there would have to be multiple places for the same
2655
2618
# values, like seconds. The current code, while more esoteric, is
2656
2619
# cleaner without depending on a parsing library. If Python had a
2657
2620
# built-in library for parsing we would use it, but we'd like to
2658
2621
# avoid excessive use of external libraries.
2659
2622
2660
2623
# New type for defining tokens, syntax, and semantics all-in-one
2661
2624
Token = collections.namedtuple("Token", (
2662
2625
"regexp", # To match token; if "value" is not None, must have
2695
2658
frozenset((token_year, token_month,
2696
2659
token_day, token_time,
2697
2660
token_week)))
2698
# Define starting values:
2699
# Value so far
2700
value = datetime.timedelta()
2661
# Define starting values
2662
value = datetime.timedelta() # Value so far
2701
2663
found_token = None
2702
# Following valid tokens
2703
followers = frozenset((token_duration, ))
2704
# String left to parse
2705
s = duration
2664
followers = frozenset((token_duration, )) # Following valid tokens
2665
s = duration # String left to parse
2706
2666
# Loop until end token is found
2707
2667
while found_token is not token_end:
2708
2668
# Search for any currently valid tokens
2732
2692
2733
2693
def string_to_delta(interval):
2734
2694
"""Parse a string and return a datetime.timedelta
2735
2695
2736
2696
>>> string_to_delta('7d')
2737
2697
datetime.timedelta(7)
2738
2698
>>> string_to_delta('60s')
2746
2706
>>> string_to_delta('5m 30s')
2747
2707
datetime.timedelta(0, 330)
2748
2708
"""
2749
2709
2750
2710
try:
2751
2711
return rfc3339_duration_to_delta(interval)
2752
2712
except ValueError:
2753
2713
pass
2754
2714
2755
2715
timevalue = datetime.timedelta(0)
2756
2716
for s in interval.split():
2757
2717
try:
2775
2735
return timevalue
2776
2736
2777
2737
2778
def daemon(nochdir=False, noclose=False):
2738
def daemon(nochdir = False, noclose = False):
2779
2739
"""See daemon(3). Standard BSD Unix function.
2780
2740
2781
2741
This should really exist as os.daemon, but it doesn't (yet)."""
2782
2742
if os.fork():
2783
2743
sys.exit()
2801
2761
2802
2762
2803
2763
def main():
2804
2764
2805
2765
##################################################################
2806
2766
# Parsing of options, both command line and config file
2807
2767
2808
2768
parser = argparse.ArgumentParser()
2809
2769
parser.add_argument("-v", "--version", action="version",
2810
version="%(prog)s {}".format(version),
2770
version = "%(prog)s {}".format(version),
2811
2771
help="show version number and exit")
2812
2772
parser.add_argument("-i", "--interface", metavar="IF",
2813
2773
help="Bind to interface IF")
2849
2809
parser.add_argument("--no-zeroconf", action="store_false",
2850
2810
dest="zeroconf", help="Do not use Zeroconf",
2851
2811
default=None)
2852
2812
2853
2813
options = parser.parse_args()
2854
2814
2855
2815
if options.check:
2856
2816
import doctest
2857
2817
fail_count, test_count = doctest.testmod()
2858
2818
sys.exit(os.EX_OK if fail_count == 0 else 1)
2859
2819
2860
2820
# Default values for config file for server-global settings
2861
server_defaults = {"interface": "",
2862
"address": "",
2863
"port": "",
2864
"debug": "False",
2865
"priority":
2866
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2867
":+SIGN-DSA-SHA256",
2868
"servicename": "Mandos",
2869
"use_dbus": "True",
2870
"use_ipv6": "True",
2871
"debuglevel": "",
2872
"restore": "True",
2873
"socket": "",
2874
"statedir": "/var/lib/mandos",
2875
"foreground": "False",
2876
"zeroconf": "True",
2877
}
2878
2821
server_defaults = { "interface": "",
2822
"address": "",
2823
"port": "",
2824
"debug": "False",
2825
"priority":
2826
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2827
":+SIGN-DSA-SHA256",
2828
"servicename": "Mandos",
2829
"use_dbus": "True",
2830
"use_ipv6": "True",
2831
"debuglevel": "",
2832
"restore": "True",
2833
"socket": "",
2834
"statedir": "/var/lib/mandos",
2835
"foreground": "False",
2836
"zeroconf": "True",
2837
}
2838
2879
2839
# Parse config file for server-global settings
2880
2840
server_config = configparser.SafeConfigParser(server_defaults)
2881
2841
del server_defaults
2899
2859
server_settings["socket"] = os.dup(server_settings
2900
2860
["socket"])
2901
2861
del server_config
2902
2862
2903
2863
# Override the settings from the config file with command line
2904
2864
# options, if set.
2905
2865
for option in ("interface", "address", "port", "debug",
2923
2883
if server_settings["debug"]:
2924
2884
server_settings["foreground"] = True
2925
2885
# Now we have our good server settings in "server_settings"
2926
2886
2927
2887
##################################################################
2928
2888
2929
2889
if (not server_settings["zeroconf"]
2930
2890
and not (server_settings["port"]
2931
2891
or server_settings["socket"] != "")):
2932
2892
parser.error("Needs port or socket to work without Zeroconf")
2933
2893
2934
2894
# For convenience
2935
2895
debug = server_settings["debug"]
2936
2896
debuglevel = server_settings["debuglevel"]
2940
2900
stored_state_file)
2941
2901
foreground = server_settings["foreground"]
2942
2902
zeroconf = server_settings["zeroconf"]
2943
2903
2944
2904
if debug:
2945
2905
initlogger(debug, logging.DEBUG)
2946
2906
else:
2949
2909
else:
2950
2910
level = getattr(logging, debuglevel.upper())
2951
2911
initlogger(debug, level)
2952
2912
2953
2913
if server_settings["servicename"] != "Mandos":
2954
2914
syslogger.setFormatter(
2955
2915
logging.Formatter('Mandos ({}) [%(process)d]:'
2956
2916
' %(levelname)s: %(message)s'.format(
2957
2917
server_settings["servicename"])))
2958
2918
2959
2919
# Parse config file with clients
2960
2920
client_config = configparser.SafeConfigParser(Client
2961
2921
.client_defaults)
2962
2922
client_config.read(os.path.join(server_settings["configdir"],
2963
2923
"clients.conf"))
2964
2924
2965
2925
global mandos_dbus_service
2966
2926
mandos_dbus_service = None
2967
2927
2968
2928
socketfd = None
2969
2929
if server_settings["socket"] != "":
2970
2930
socketfd = server_settings["socket"]
2986
2946
except IOError as e:
2987
2947
logger.error("Could not open file %r", pidfilename,
2988
2948
exc_info=e)
2989
2949
2990
2950
for name, group in (("_mandos", "_mandos"),
2991
2951
("mandos", "mandos"),
2992
2952
("nobody", "nogroup")):
3010
2970
.format(uid, gid, os.strerror(error.errno)))
3011
2971
if error.errno != errno.EPERM:
3012
2972
raise
3013
2973
3014
2974
if debug:
3015
2975
# Enable all possible GnuTLS debugging
3016
2976
3017
2977
# "Use a log level over 10 to enable all debugging options."
3018
2978
# - GnuTLS manual
3019
2979
gnutls.global_set_log_level(11)
3020
2980
3021
2981
@gnutls.log_func
3022
2982
def debug_gnutls(level, string):
3023
2983
logger.debug("GnuTLS: %s", string[:-1])
3024
2984
3025
2985
gnutls.global_set_log_function(debug_gnutls)
3026
2986
3027
2987
# Redirect stdin so all checkers get /dev/null
3028
2988
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3029
2989
os.dup2(null, sys.stdin.fileno())
3030
2990
if null > 2:
3031
2991
os.close(null)
3032
2992
3033
2993
# Need to fork before connecting to D-Bus
3034
2994
if not foreground:
3035
2995
# Close all input and output, do double fork, etc.
3036
2996
daemon()
3037
3038
# multiprocessing will use threads, so before we use GLib we need
3039
# to inform GLib that threads will be used.
3040
GLib.threads_init()
3041
2997
2998
# multiprocessing will use threads, so before we use GObject we
2999
# need to inform GObject that threads will be used.
3000
GObject.threads_init()
3001
3042
3002
global main_loop
3043
3003
# From the Avahi example code
3044
3004
DBusGMainLoop(set_as_default=True)
3045
main_loop = GLib.MainLoop()
3005
main_loop = GObject.MainLoop()
3046
3006
bus = dbus.SystemBus()
3047
3007
# End of Avahi example code
3048
3008
if use_dbus:
3061
3021
if zeroconf:
3062
3022
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3063
3023
service = AvahiServiceToSyslog(
3064
name=server_settings["servicename"],
3065
servicetype="_mandos._tcp",
3066
protocol=protocol,
3067
bus=bus)
3024
name = server_settings["servicename"],
3025
servicetype = "_mandos._tcp",
3026
protocol = protocol,
3027
bus = bus)
3068
3028
if server_settings["interface"]:
3069
3029
service.interface = if_nametoindex(
3070
3030
server_settings["interface"].encode("utf-8"))
3071
3031
3072
3032
global multiprocessing_manager
3073
3033
multiprocessing_manager = multiprocessing.Manager()
3074
3034
3075
3035
client_class = Client
3076
3036
if use_dbus:
3077
client_class = functools.partial(ClientDBus, bus=bus)
3078
3037
client_class = functools.partial(ClientDBus, bus = bus)
3038
3079
3039
client_settings = Client.config_parser(client_config)
3080
3040
old_client_settings = {}
3081
3041
clients_data = {}
3082
3042
3083
3043
# This is used to redirect stdout and stderr for checker processes
3084
3044
global wnull
3085
wnull = open(os.devnull, "w") # A writable /dev/null
3045
wnull = open(os.devnull, "w") # A writable /dev/null
3086
3046
# Only used if server is running in foreground but not in debug
3087
3047
# mode
3088
3048
if debug or not foreground:
3089
3049
wnull.close()
3090
3050
3091
3051
# Get client data and settings from last running state.
3092
3052
if server_settings["restore"]:
3093
3053
try:
3094
3054
with open(stored_state_path, "rb") as stored_state:
3095
if sys.version_info.major == 2:
3055
if sys.version_info.major == 2:
3096
3056
clients_data, old_client_settings = pickle.load(
3097
3057
stored_state)
3098
3058
else:
3099
3059
bytes_clients_data, bytes_old_client_settings = (
3100
pickle.load(stored_state, encoding="bytes"))
3101
# Fix bytes to strings
3102
# clients_data
3060
pickle.load(stored_state, encoding = "bytes"))
3061
### Fix bytes to strings
3062
## clients_data
3103
3063
# .keys()
3104
clients_data = {(key.decode("utf-8")
3105
if isinstance(key, bytes)
3106
else key): value
3107
for key, value in
3108
bytes_clients_data.items()}
3064
clients_data = { (key.decode("utf-8")
3065
if isinstance(key, bytes)
3066
else key): value
3067
for key, value in
3068
bytes_clients_data.items() }
3109
3069
del bytes_clients_data
3110
3070
for key in clients_data:
3111
value = {(k.decode("utf-8")
3112
if isinstance(k, bytes) else k): v
3113
for k, v in
3114
clients_data[key].items()}
3071
value = { (k.decode("utf-8")
3072
if isinstance(k, bytes) else k): v
3073
for k, v in
3074
clients_data[key].items() }
3115
3075
clients_data[key] = value
3116
3076
# .client_structure
3117
3077
value["client_structure"] = [
3118
3078
(s.decode("utf-8")
3119
3079
if isinstance(s, bytes)
3120
3080
else s) for s in
3121
value["client_structure"]]
3081
value["client_structure"] ]
3122
3082
# .name & .host
3123
3083
for k in ("name", "host"):
3124
3084
if isinstance(value[k], bytes):
3125
3085
value[k] = value[k].decode("utf-8")
3126
# old_client_settings
3086
## old_client_settings
3127
3087
# .keys()
3128
3088
old_client_settings = {
3129
3089
(key.decode("utf-8")
3130
3090
if isinstance(key, bytes)
3131
3091
else key): value
3132
3092
for key, value in
3133
bytes_old_client_settings.items()}
3093
bytes_old_client_settings.items() }
3134
3094
del bytes_old_client_settings
3135
3095
# .host
3136
3096
for value in old_client_settings.values():
3150
3110
logger.warning("Could not load persistent state: "
3151
3111
"EOFError:",
3152
3112
exc_info=e)
3153
3113
3154
3114
with PGPEngine() as pgp:
3155
3115
for client_name, client in clients_data.items():
3156
3116
# Skip removed clients
3157
3117
if client_name not in client_settings:
3158
3118
continue
3159
3119
3160
3120
# Decide which value to use after restoring saved state.
3161
3121
# We have three different values: Old config file,
3162
3122
# new config file, and saved state.
3173
3133
client[name] = value
3174
3134
except KeyError:
3175
3135
pass
3176
3136
3177
3137
# Clients who has passed its expire date can still be
3178
3138
# enabled if its last checker was successful. A Client
3179
3139
# whose checker succeeded before we stored its state is
3212
3172
client_name))
3213
3173
client["secret"] = (client_settings[client_name]
3214
3174
["secret"])
3215
3175
3216
3176
# Add/remove clients based on new changes made to config
3217
3177
for client_name in (set(old_client_settings)
3218
3178
- set(client_settings)):
3220
3180
for client_name in (set(client_settings)
3221
3181
- set(old_client_settings)):
3222
3182
clients_data[client_name] = client_settings[client_name]
3223
3183
3224
3184
# Create all client objects
3225
3185
for client_name, client in clients_data.items():
3226
3186
tcp_server.clients[client_name] = client_class(
3227
name=client_name,
3228
settings=client,
3229
server_settings=server_settings)
3230
3187
name = client_name,
3188
settings = client,
3189
server_settings = server_settings)
3190
3231
3191
if not tcp_server.clients:
3232
3192
logger.warning("No clients defined")
3233
3193
3234
3194
if not foreground:
3235
3195
if pidfile is not None:
3236
3196
pid = os.getpid()
3242
3202
pidfilename, pid)
3243
3203
del pidfile
3244
3204
del pidfilename
3245
3246
for termsig in (signal.SIGHUP, signal.SIGTERM):
3247
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3248
lambda: main_loop.quit() and False)
3249
3205
3206
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
3207
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3208
3250
3209
if use_dbus:
3251
3210
3252
3211
@alternate_dbus_interfaces(
3253
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3212
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3254
3213
class MandosDBusService(DBusObjectWithObjectManager):
3255
3214
"""A D-Bus proxy object"""
3256
3215
3257
3216
def __init__(self):
3258
3217
dbus.service.Object.__init__(self, bus, "/")
3259
3218
3260
3219
_interface = "se.recompile.Mandos"
3261
3220
3262
3221
@dbus.service.signal(_interface, signature="o")
3263
3222
def ClientAdded(self, objpath):
3264
3223
"D-Bus signal"
3265
3224
pass
3266
3225
3267
3226
@dbus.service.signal(_interface, signature="ss")
3268
3227
def ClientNotFound(self, fingerprint, address):
3269
3228
"D-Bus signal"
3270
3229
pass
3271
3230
3272
3231
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3273
3232
"true"})
3274
3233
@dbus.service.signal(_interface, signature="os")
3275
3234
def ClientRemoved(self, objpath, name):
3276
3235
"D-Bus signal"
3277
3236
pass
3278
3237
3279
3238
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3280
3239
"true"})
3281
3240
@dbus.service.method(_interface, out_signature="ao")
3283
3242
"D-Bus method"
3284
3243
return dbus.Array(c.dbus_object_path for c in
3285
3244
tcp_server.clients.values())
3286
3245
3287
3246
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3288
3247
"true"})
3289
3248
@dbus.service.method(_interface,
3291
3250
def GetAllClientsWithProperties(self):
3292
3251
"D-Bus method"
3293
3252
return dbus.Dictionary(
3294
{c.dbus_object_path: c.GetAll(
3253
{ c.dbus_object_path: c.GetAll(
3295
3254
"se.recompile.Mandos.Client")
3296
for c in tcp_server.clients.values()},
3255
for c in tcp_server.clients.values() },
3297
3256
signature="oa{sv}")
3298
3257
3299
3258
@dbus.service.method(_interface, in_signature="o")
3300
3259
def RemoveClient(self, object_path):
3301
3260
"D-Bus method"
3309
3268
self.client_removed_signal(c)
3310
3269
return
3311
3270
raise KeyError(object_path)
3312
3271
3313
3272
del _interface
3314
3273
3315
3274
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3316
out_signature="a{oa{sa{sv}}}")
3275
out_signature = "a{oa{sa{sv}}}")
3317
3276
def GetManagedObjects(self):
3318
3277
"""D-Bus method"""
3319
3278
return dbus.Dictionary(
3320
{client.dbus_object_path:
3321
dbus.Dictionary(
3322
{interface: client.GetAll(interface)
3323
for interface in
3324
client._get_all_interface_names()})
3325
for client in tcp_server.clients.values()})
3326
3279
{ client.dbus_object_path:
3280
dbus.Dictionary(
3281
{ interface: client.GetAll(interface)
3282
for interface in
3283
client._get_all_interface_names()})
3284
for client in tcp_server.clients.values()})
3285
3327
3286
def client_added_signal(self, client):
3328
3287
"""Send the new standard signal and the old signal"""
3329
3288
if use_dbus:
3331
3290
self.InterfacesAdded(
3332
3291
client.dbus_object_path,
3333
3292
dbus.Dictionary(
3334
{interface: client.GetAll(interface)
3335
for interface in
3336
client._get_all_interface_names()}))
3293
{ interface: client.GetAll(interface)
3294
for interface in
3295
client._get_all_interface_names()}))
3337
3296
# Old signal
3338
3297
self.ClientAdded(client.dbus_object_path)
3339
3298
3340
3299
def client_removed_signal(self, client):
3341
3300
"""Send the new standard signal and the old signal"""
3342
3301
if use_dbus:
3347
3306
# Old signal
3348
3307
self.ClientRemoved(client.dbus_object_path,
3349
3308
client.name)
3350
3309
3351
3310
mandos_dbus_service = MandosDBusService()
3352
3353
# Save modules to variables to exempt the modules from being
3354
# unloaded before the function registered with atexit() is run.
3355
mp = multiprocessing
3356
wn = wnull
3357
3311
3358
3312
def cleanup():
3359
3313
"Cleanup function; run on exit"
3360
3314
if zeroconf:
3361
3315
service.cleanup()
3362
3363
mp.active_children()
3364
wn.close()
3316
3317
multiprocessing.active_children()
3318
wnull.close()
3365
3319
if not (tcp_server.clients or client_settings):
3366
3320
return
3367
3321
3368
3322
# Store client before exiting. Secrets are encrypted with key
3369
3323
# based on what config file has. If config file is
3370
3324
# removed/edited, old secret will thus be unrecovable.
3375
3329
client.encrypted_secret = pgp.encrypt(client.secret,
3376
3330
key)
3377
3331
client_dict = {}
3378
3332
3379
3333
# A list of attributes that can not be pickled
3380
3334
# + secret.
3381
exclude = {"bus", "changedstate", "secret",
3382
"checker", "server_settings"}
3335
exclude = { "bus", "changedstate", "secret",
3336
"checker", "server_settings" }
3383
3337
for name, typ in inspect.getmembers(dbus.service
3384
3338
.Object):
3385
3339
exclude.add(name)
3386
3340
3387
3341
client_dict["encrypted_secret"] = (client
3388
3342
.encrypted_secret)
3389
3343
for attr in client.client_structure:
3390
3344
if attr not in exclude:
3391
3345
client_dict[attr] = getattr(client, attr)
3392
3346
3393
3347
clients[client.name] = client_dict
3394
3348
del client_settings[client.name]["secret"]
3395
3349
3396
3350
try:
3397
3351
with tempfile.NamedTemporaryFile(
3398
3352
mode='wb',
3401
3355
dir=os.path.dirname(stored_state_path),
3402
3356
delete=False) as stored_state:
3403
3357
pickle.dump((clients, client_settings), stored_state,
3404
protocol=2)
3358
protocol = 2)
3405
3359
tempname = stored_state.name
3406
3360
os.rename(tempname, stored_state_path)
3407
3361
except (IOError, OSError) as e:
3417
3371
logger.warning("Could not save persistent state:",
3418
3372
exc_info=e)
3419
3373
raise
3420
3374
3421
3375
# Delete all clients, and settings from config
3422
3376
while tcp_server.clients:
3423
3377
name, client = tcp_server.clients.popitem()
3429
3383
if use_dbus:
3430
3384
mandos_dbus_service.client_removed_signal(client)
3431
3385
client_settings.clear()
3432
3386
3433
3387
atexit.register(cleanup)
3434
3388
3435
3389
for client in tcp_server.clients.values():
3436
3390
if use_dbus:
3437
3391
# Emit D-Bus signal for adding
3439
3393
# Need to initiate checking of clients
3440
3394
if client.enabled:
3441
3395
client.init_checker()
3442
3396
3443
3397
tcp_server.enable()
3444
3398
tcp_server.server_activate()
3445
3399
3446
3400
# Find out what port we got
3447
3401
if zeroconf:
3448
3402
service.port = tcp_server.socket.getsockname()[1]
3453
3407
else: # IPv4
3454
3408
logger.info("Now listening on address %r, port %d",
3455
3409
*tcp_server.socket.getsockname())
3456
3457
# service.interface = tcp_server.socket.getsockname()[3]
3458
3410
3411
#service.interface = tcp_server.socket.getsockname()[3]
3412
3459
3413
try:
3460
3414
if zeroconf:
3461
3415
# From the Avahi example code
3466
3420
cleanup()
3467
3421
sys.exit(1)
3468
3422
# End of Avahi example code
3469
3470
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3471
lambda *args, **kwargs:
3472
(tcp_server.handle_request
3473
(*args[2:], **kwargs) or True))
3474
3423
3424
GObject.io_add_watch(tcp_server.fileno(), GObject.IO_IN,
3425
lambda *args, **kwargs:
3426
(tcp_server.handle_request
3427
(*args[2:], **kwargs) or True))
3428
3475
3429
logger.debug("Starting main loop")
3476
3430
main_loop.run()
3477
3431
except AvahiError as error:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0