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- Committer: Teddy Hogeborn
- Date: 2018-02-22 18:50:12 UTC
- mto: This revision was merged to the branch mainline in revision 943.
- Revision ID: teddy@recompile.se-20180222185012-etchk537ast7s1xg
Tags: version-1.7.19-1
* Makefile (version): Change to 1.7.19.
* NEWS (Version 1.7.19): Add new entry.
* debian/changelog (1.7.19-1): - '' -
* NEWS (Version 1.7.19): Add new entry.
* debian/changelog (1.7.19-1): - '' -
- files modified:
- DBUS-API
added
removed
mandos
1
1
#!/usr/bin/python
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2
# -*- mode: python; coding: utf-8 -*-
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#
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#
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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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# 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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# Copyright © 2008-2018 Teddy Hogeborn
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# Copyright © 2008-2018 Björn Påhlsson
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#
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# This file is part of Mandos.
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#
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# Mandos is free software: you can redistribute it and/or modify it
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# 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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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# Mandos is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
24
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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#
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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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# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
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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 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:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
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from IN import SO_BINDTODEVICE
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except ImportError:
95
SO_BINDTODEVICE = None
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
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stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
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stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
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SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
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# No value found
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SO_BINDTODEVICE = None
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if sys.version_info.major == 2:
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str = unicode
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version = "1.7.7"
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version = "1.7.19"
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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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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,
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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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'--force-mdc',
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'--quiet',
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'--no-use-agent']
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'--quiet']
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# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
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self.gnupgargs.append("--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,
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topdown = False):
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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
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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
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def encrypt(self, data, password):
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passphrase = self.password_encode(password)
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with tempfile.NamedTemporaryFile(
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'--passphrase-file',
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passfile.name]
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+ self.gnupgargs,
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stdin = subprocess.PIPE,
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stdout = subprocess.PIPE,
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stderr = subprocess.PIPE)
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ciphertext, err = proc.communicate(input = data)
250
stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
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if proc.returncode != 0:
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raise PGPError(err)
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return ciphertext
237
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def decrypt(self, data, password):
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passphrase = self.password_encode(password)
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with tempfile.NamedTemporaryFile(
241
dir = self.tempdir) as passfile:
261
dir=self.tempdir) as passfile:
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passfile.write(passphrase)
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passfile.flush()
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proc = subprocess.Popen([self.gpg, '--decrypt',
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'--passphrase-file',
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passfile.name]
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+ self.gnupgargs,
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stdin = subprocess.PIPE,
249
stdout = subprocess.PIPE,
250
stderr = subprocess.PIPE)
251
decrypted_plaintext, err = proc.communicate(input = data)
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
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if proc.returncode != 0:
253
273
raise PGPError(err)
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return decrypted_plaintext
255
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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.
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280
It is instantiated once, and simulates having an Avahi module."""
260
IF_UNSPEC = -1 # avahi-common/address.h
261
PROTO_UNSPEC = -1 # avahi-common/address.h
262
PROTO_INET = 0 # avahi-common/address.h
263
PROTO_INET6 = 1 # avahi-common/address.h
281
IF_UNSPEC = -1 # avahi-common/address.h
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PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
264
285
DBUS_NAME = "org.freedesktop.Avahi"
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286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
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DBUS_PATH_SERVER = "/"
289
268
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def string_array_to_txt_array(self, t):
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return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
270
292
for s in t), signature="ay")
271
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
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SERVER_INVALID = 0 # avahi-common/defs.h
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SERVER_REGISTERING = 1 # avahi-common/defs.h
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SERVER_RUNNING = 2 # avahi-common/defs.h
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SERVER_COLLISION = 3 # avahi-common/defs.h
278
SERVER_FAILURE = 4 # avahi-common/defs.h
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
279
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avahi = Avahi()
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303
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class AvahiError(Exception):
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def __init__(self, value, *args, **kwargs):
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self.value = value
295
318
296
319
class AvahiService(object):
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"""An Avahi (Zeroconf) service.
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321
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322
Attributes:
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interface: integer; avahi.IF_UNSPEC or an interface index.
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324
Used to optionally bind to the specified interface.
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server: D-Bus Server
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bus: dbus.SystemBus()
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"""
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339
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340
def __init__(self,
318
interface = avahi.IF_UNSPEC,
319
name = None,
320
servicetype = None,
321
port = None,
322
TXT = None,
323
domain = "",
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host = "",
325
max_renames = 32768,
326
protocol = avahi.PROTO_UNSPEC,
327
bus = None):
341
interface=avahi.IF_UNSPEC,
342
name=None,
343
servicetype=None,
344
port=None,
345
TXT=None,
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domain="",
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host="",
348
max_renames=32768,
349
protocol=avahi.PROTO_UNSPEC,
350
bus=None):
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self.interface = interface
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self.name = name
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self.type = servicetype
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self.server = None
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self.bus = bus
341
364
self.entry_group_state_changed_match = None
342
365
343
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def rename(self, remove=True):
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"""Derived from the Avahi example code"""
345
368
if self.rename_count >= self.max_renames:
365
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logger.critical("D-Bus Exception", exc_info=error)
366
389
self.cleanup()
367
390
os._exit(1)
368
391
369
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def remove(self):
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"""Derived from the Avahi example code"""
371
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if self.entry_group_state_changed_match is not None:
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self.entry_group_state_changed_match = None
374
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if self.group is not None:
375
398
self.group.Reset()
376
399
377
400
def add(self):
378
401
"""Derived from the Avahi example code"""
379
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self.remove()
396
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dbus.UInt16(self.port),
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420
avahi.string_array_to_txt_array(self.TXT))
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self.group.Commit()
399
422
400
423
def entry_group_state_changed(self, state, error):
401
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"""Derived from the Avahi example code"""
402
425
logger.debug("Avahi entry group state change: %i", state)
403
426
404
427
if state == avahi.ENTRY_GROUP_ESTABLISHED:
405
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logger.debug("Zeroconf service established.")
406
429
elif state == avahi.ENTRY_GROUP_COLLISION:
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433
logger.critical("Avahi: Error in group state changed %s",
411
434
str(error))
412
435
raise AvahiGroupError("State changed: {!s}".format(error))
413
436
414
437
def cleanup(self):
415
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"""Derived from the Avahi example code"""
416
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if self.group is not None:
421
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pass
422
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self.group = None
423
446
self.remove()
424
447
425
448
def server_state_changed(self, state, error=None):
426
449
"""Derived from the Avahi example code"""
427
450
logger.debug("Avahi server state change: %i", state)
456
479
logger.debug("Unknown state: %r", state)
457
480
else:
458
481
logger.debug("Unknown state: %r: %r", state, error)
459
482
460
483
def activate(self):
461
484
"""Derived from the Avahi example code"""
462
485
if self.server is None:
473
496
class AvahiServiceToSyslog(AvahiService):
474
497
def rename(self, *args, **kwargs):
475
498
"""Add the new name to the syslog messages"""
476
ret = AvahiService.rename(self, *args, **kwargs)
499
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
477
500
syslogger.setFormatter(logging.Formatter(
478
501
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
479
502
.format(self.name)))
480
503
return ret
481
504
505
482
506
# Pretend that we have a GnuTLS module
483
507
class GnuTLS(object):
484
508
"""This isn't so much a class as it is a module-like namespace.
485
509
It is instantiated once, and simulates having a GnuTLS module."""
486
487
_library = ctypes.cdll.LoadLibrary(
488
ctypes.util.find_library("gnutls"))
510
511
library = ctypes.util.find_library("gnutls")
512
if library is None:
513
library = ctypes.util.find_library("gnutls-deb0")
514
_library = ctypes.cdll.LoadLibrary(library)
515
del library
489
516
_need_version = b"3.3.0"
517
490
518
def __init__(self):
491
# Need to use class name "GnuTLS" here, since this method is
492
# called before the assignment to the "gnutls" global variable
493
# happens.
494
if GnuTLS.check_version(self._need_version) is None:
495
raise GnuTLS.Error("Needs GnuTLS {} or later"
496
.format(self._need_version))
497
519
# Need to use "self" here, since this method is called before
520
# the assignment to the "gnutls" global variable happens.
521
if self.check_version(self._need_version) is None:
522
raise self.Error("Needs GnuTLS {} or later"
523
.format(self._need_version))
524
498
525
# Unless otherwise indicated, the constants and types below are
499
526
# all from the gnutls/gnutls.h C header file.
500
527
501
528
# Constants
502
529
E_SUCCESS = 0
503
530
E_INTERRUPTED = -52
508
535
CRD_CERTIFICATE = 1
509
536
E_NO_CERTIFICATE_FOUND = -49
510
537
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
511
538
512
539
# Types
513
540
class session_int(ctypes.Structure):
514
541
_fields_ = []
515
542
session_t = ctypes.POINTER(session_int)
543
516
544
class certificate_credentials_st(ctypes.Structure):
517
545
_fields_ = []
518
546
certificate_credentials_t = ctypes.POINTER(
519
547
certificate_credentials_st)
520
548
certificate_type_t = ctypes.c_int
549
521
550
class datum_t(ctypes.Structure):
522
551
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
523
552
('size', ctypes.c_uint)]
553
524
554
class openpgp_crt_int(ctypes.Structure):
525
555
_fields_ = []
526
556
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
527
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
557
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
528
558
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
529
559
credentials_type_t = ctypes.c_int
530
560
transport_ptr_t = ctypes.c_void_p
531
561
close_request_t = ctypes.c_int
532
562
533
563
# Exceptions
534
564
class Error(Exception):
535
565
# We need to use the class name "GnuTLS" here, since this
536
566
# exception might be raised from within GnuTLS.__init__,
537
567
# which is called before the assignment to the "gnutls"
538
568
# global variable has happened.
539
def __init__(self, message = None, code = None, args=()):
569
def __init__(self, message=None, code=None, args=()):
540
570
# Default usage is by a message string, but if a return
541
571
# code is passed, convert it to a string with
542
572
# gnutls.strerror()
545
575
message = GnuTLS.strerror(code)
546
576
return super(GnuTLS.Error, self).__init__(
547
577
message, *args)
548
578
549
579
class CertificateSecurityError(Error):
550
580
pass
551
581
552
582
# Classes
553
583
class Credentials(object):
554
584
def __init__(self):
556
586
gnutls.certificate_allocate_credentials(
557
587
ctypes.byref(self._c_object))
558
588
self.type = gnutls.CRD_CERTIFICATE
559
589
560
590
def __del__(self):
561
591
gnutls.certificate_free_credentials(self._c_object)
562
592
563
593
class ClientSession(object):
564
def __init__(self, socket, credentials = None):
594
def __init__(self, socket, credentials=None):
565
595
self._c_object = gnutls.session_t()
566
596
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
567
597
gnutls.set_default_priority(self._c_object)
575
605
ctypes.cast(credentials._c_object,
576
606
ctypes.c_void_p))
577
607
self.credentials = credentials
578
608
579
609
def __del__(self):
580
610
gnutls.deinit(self._c_object)
581
611
582
612
def handshake(self):
583
613
return gnutls.handshake(self._c_object)
584
614
585
615
def send(self, data):
586
616
data = bytes(data)
587
617
data_len = len(data)
589
619
data_len -= gnutls.record_send(self._c_object,
590
620
data[-data_len:],
591
621
data_len)
592
622
593
623
def bye(self):
594
624
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
595
625
596
626
# Error handling functions
597
627
def _error_code(result):
598
628
"""A function to raise exceptions on errors, suitable
600
630
if result >= 0:
601
631
return result
602
632
if result == gnutls.E_NO_CERTIFICATE_FOUND:
603
raise gnutls.CertificateSecurityError(code = result)
604
raise gnutls.Error(code = result)
605
633
raise gnutls.CertificateSecurityError(code=result)
634
raise gnutls.Error(code=result)
635
606
636
def _retry_on_error(result, func, arguments):
607
637
"""A function to retry on some errors, suitable
608
638
for the 'errcheck' attribute on ctypes functions"""
611
641
return _error_code(result)
612
642
result = func(*arguments)
613
643
return result
614
644
615
645
# Unless otherwise indicated, the function declarations below are
616
646
# all from the gnutls/gnutls.h C header file.
617
647
618
648
# Functions
619
649
priority_set_direct = _library.gnutls_priority_set_direct
620
650
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
621
651
ctypes.POINTER(ctypes.c_char_p)]
622
652
priority_set_direct.restype = _error_code
623
653
624
654
init = _library.gnutls_init
625
655
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
626
656
init.restype = _error_code
627
657
628
658
set_default_priority = _library.gnutls_set_default_priority
629
659
set_default_priority.argtypes = [session_t]
630
660
set_default_priority.restype = _error_code
631
661
632
662
record_send = _library.gnutls_record_send
633
663
record_send.argtypes = [session_t, ctypes.c_void_p,
634
664
ctypes.c_size_t]
635
665
record_send.restype = ctypes.c_ssize_t
636
666
record_send.errcheck = _retry_on_error
637
667
638
668
certificate_allocate_credentials = (
639
669
_library.gnutls_certificate_allocate_credentials)
640
670
certificate_allocate_credentials.argtypes = [
641
671
ctypes.POINTER(certificate_credentials_t)]
642
672
certificate_allocate_credentials.restype = _error_code
643
673
644
674
certificate_free_credentials = (
645
675
_library.gnutls_certificate_free_credentials)
646
certificate_free_credentials.argtypes = [certificate_credentials_t]
676
certificate_free_credentials.argtypes = [
677
certificate_credentials_t]
647
678
certificate_free_credentials.restype = None
648
679
649
680
handshake_set_private_extensions = (
650
681
_library.gnutls_handshake_set_private_extensions)
651
682
handshake_set_private_extensions.argtypes = [session_t,
652
683
ctypes.c_int]
653
684
handshake_set_private_extensions.restype = None
654
685
655
686
credentials_set = _library.gnutls_credentials_set
656
687
credentials_set.argtypes = [session_t, credentials_type_t,
657
688
ctypes.c_void_p]
658
689
credentials_set.restype = _error_code
659
690
660
691
strerror = _library.gnutls_strerror
661
692
strerror.argtypes = [ctypes.c_int]
662
693
strerror.restype = ctypes.c_char_p
663
694
664
695
certificate_type_get = _library.gnutls_certificate_type_get
665
696
certificate_type_get.argtypes = [session_t]
666
697
certificate_type_get.restype = _error_code
667
698
668
699
certificate_get_peers = _library.gnutls_certificate_get_peers
669
700
certificate_get_peers.argtypes = [session_t,
670
701
ctypes.POINTER(ctypes.c_uint)]
671
702
certificate_get_peers.restype = ctypes.POINTER(datum_t)
672
703
673
704
global_set_log_level = _library.gnutls_global_set_log_level
674
705
global_set_log_level.argtypes = [ctypes.c_int]
675
706
global_set_log_level.restype = None
676
707
677
708
global_set_log_function = _library.gnutls_global_set_log_function
678
709
global_set_log_function.argtypes = [log_func]
679
710
global_set_log_function.restype = None
680
711
681
712
deinit = _library.gnutls_deinit
682
713
deinit.argtypes = [session_t]
683
714
deinit.restype = None
684
715
685
716
handshake = _library.gnutls_handshake
686
717
handshake.argtypes = [session_t]
687
718
handshake.restype = _error_code
688
719
handshake.errcheck = _retry_on_error
689
720
690
721
transport_set_ptr = _library.gnutls_transport_set_ptr
691
722
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
692
723
transport_set_ptr.restype = None
693
724
694
725
bye = _library.gnutls_bye
695
726
bye.argtypes = [session_t, close_request_t]
696
727
bye.restype = _error_code
697
728
bye.errcheck = _retry_on_error
698
729
699
730
check_version = _library.gnutls_check_version
700
731
check_version.argtypes = [ctypes.c_char_p]
701
732
check_version.restype = ctypes.c_char_p
702
733
703
734
# All the function declarations below are from gnutls/openpgp.h
704
735
705
736
openpgp_crt_init = _library.gnutls_openpgp_crt_init
706
737
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
707
738
openpgp_crt_init.restype = _error_code
708
739
709
740
openpgp_crt_import = _library.gnutls_openpgp_crt_import
710
741
openpgp_crt_import.argtypes = [openpgp_crt_t,
711
742
ctypes.POINTER(datum_t),
712
743
openpgp_crt_fmt_t]
713
744
openpgp_crt_import.restype = _error_code
714
745
715
746
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
716
747
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
717
748
ctypes.POINTER(ctypes.c_uint)]
718
749
openpgp_crt_verify_self.restype = _error_code
719
750
720
751
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
721
752
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
722
753
openpgp_crt_deinit.restype = None
723
754
724
755
openpgp_crt_get_fingerprint = (
725
756
_library.gnutls_openpgp_crt_get_fingerprint)
726
757
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
728
759
ctypes.POINTER(
729
760
ctypes.c_size_t)]
730
761
openpgp_crt_get_fingerprint.restype = _error_code
731
762
732
763
# Remove non-public functions
733
764
del _error_code, _retry_on_error
734
765
# Create the global "gnutls" object, simulating a module
735
766
gnutls = GnuTLS()
736
767
768
737
769
def call_pipe(connection, # : multiprocessing.Connection
738
770
func, *args, **kwargs):
739
771
"""This function is meant to be called by multiprocessing.Process
740
772
741
773
This function runs func(*args, **kwargs), and writes the resulting
742
774
return value on the provided multiprocessing.Connection.
743
775
"""
744
776
connection.send(func(*args, **kwargs))
745
777
connection.close()
746
778
779
747
780
class Client(object):
748
781
"""A representation of a client host served by this server.
749
782
750
783
Attributes:
751
784
approved: bool(); 'None' if not yet approved/disapproved
752
785
approval_delay: datetime.timedelta(); Time to wait for approval
789
822
disabled, or None
790
823
server_settings: The server_settings dict from main()
791
824
"""
792
825
793
826
runtime_expansions = ("approval_delay", "approval_duration",
794
827
"created", "enabled", "expires",
795
828
"fingerprint", "host", "interval",
806
839
"approved_by_default": "True",
807
840
"enabled": "True",
808
841
}
809
842
810
843
@staticmethod
811
844
def config_parser(config):
812
845
"""Construct a new dict of client settings of this form:
819
852
for client_name in config.sections():
820
853
section = dict(config.items(client_name))
821
854
client = settings[client_name] = {}
822
855
823
856
client["host"] = section["host"]
824
857
# Reformat values from string types to Python types
825
858
client["approved_by_default"] = config.getboolean(
826
859
client_name, "approved_by_default")
827
860
client["enabled"] = config.getboolean(client_name,
828
861
"enabled")
829
862
830
863
# Uppercase and remove spaces from fingerprint for later
831
864
# comparison purposes with return value from the
832
865
# fingerprint() function
856
889
client["last_approval_request"] = None
857
890
client["last_checked_ok"] = None
858
891
client["last_checker_status"] = -2
859
892
860
893
return settings
861
862
def __init__(self, settings, name = None, server_settings=None):
894
895
def __init__(self, settings, name=None, server_settings=None):
863
896
self.name = name
864
897
if server_settings is None:
865
898
server_settings = {}
867
900
# adding all client settings
868
901
for setting, value in settings.items():
869
902
setattr(self, setting, value)
870
903
871
904
if self.enabled:
872
905
if not hasattr(self, "last_enabled"):
873
906
self.last_enabled = datetime.datetime.utcnow()
877
910
else:
878
911
self.last_enabled = None
879
912
self.expires = None
880
913
881
914
logger.debug("Creating client %r", self.name)
882
915
logger.debug(" Fingerprint: %s", self.fingerprint)
883
916
self.created = settings.get("created",
884
917
datetime.datetime.utcnow())
885
918
886
919
# attributes specific for this server instance
887
920
self.checker = None
888
921
self.checker_initiator_tag = None
897
930
for attr in self.__dict__.keys()
898
931
if not attr.startswith("_")]
899
932
self.client_structure.append("client_structure")
900
933
901
934
for name, t in inspect.getmembers(
902
935
type(self), lambda obj: isinstance(obj, property)):
903
936
if not name.startswith("_"):
904
937
self.client_structure.append(name)
905
938
906
939
# Send notice to process children that client state has changed
907
940
def send_changedstate(self):
908
941
with self.changedstate:
909
942
self.changedstate.notify_all()
910
943
911
944
def enable(self):
912
945
"""Start this client's checker and timeout hooks"""
913
946
if getattr(self, "enabled", False):
918
951
self.last_enabled = datetime.datetime.utcnow()
919
952
self.init_checker()
920
953
self.send_changedstate()
921
954
922
955
def disable(self, quiet=True):
923
956
"""Disable this client."""
924
957
if not getattr(self, "enabled", False):
938
971
self.send_changedstate()
939
972
# Do not run this again if called by a GLib.timeout_add
940
973
return False
941
974
942
975
def __del__(self):
943
976
self.disable()
944
977
945
978
def init_checker(self):
946
979
# Schedule a new checker to be started an 'interval' from now,
947
980
# and every interval from then on.
957
990
int(self.timeout.total_seconds() * 1000), self.disable)
958
991
# Also start a new checker *right now*.
959
992
self.start_checker()
960
993
961
994
def checker_callback(self, source, condition, connection,
962
995
command):
963
996
"""The checker has completed, so take appropriate actions."""
966
999
# Read return code from connection (see call_pipe)
967
1000
returncode = connection.recv()
968
1001
connection.close()
969
1002
970
1003
if returncode >= 0:
971
1004
self.last_checker_status = returncode
972
1005
self.last_checker_signal = None
982
1015
logger.warning("Checker for %(name)s crashed?",
983
1016
vars(self))
984
1017
return False
985
1018
986
1019
def checked_ok(self):
987
1020
"""Assert that the client has been seen, alive and well."""
988
1021
self.last_checked_ok = datetime.datetime.utcnow()
989
1022
self.last_checker_status = 0
990
1023
self.last_checker_signal = None
991
1024
self.bump_timeout()
992
1025
993
1026
def bump_timeout(self, timeout=None):
994
1027
"""Bump up the timeout for this client."""
995
1028
if timeout is None:
1001
1034
self.disable_initiator_tag = GLib.timeout_add(
1002
1035
int(timeout.total_seconds() * 1000), self.disable)
1003
1036
self.expires = datetime.datetime.utcnow() + timeout
1004
1037
1005
1038
def need_approval(self):
1006
1039
self.last_approval_request = datetime.datetime.utcnow()
1007
1040
1008
1041
def start_checker(self):
1009
1042
"""Start a new checker subprocess if one is not running.
1010
1043
1011
1044
If a checker already exists, leave it running and do
1012
1045
nothing."""
1013
1046
# The reason for not killing a running checker is that if we
1018
1051
# checkers alone, the checker would have to take more time
1019
1052
# than 'timeout' for the client to be disabled, which is as it
1020
1053
# should be.
1021
1054
1022
1055
if self.checker is not None and not self.checker.is_alive():
1023
1056
logger.warning("Checker was not alive; joining")
1024
1057
self.checker.join()
1028
1061
# Escape attributes for the shell
1029
1062
escaped_attrs = {
1030
1063
attr: re.escape(str(getattr(self, attr)))
1031
for attr in self.runtime_expansions }
1064
for attr in self.runtime_expansions}
1032
1065
try:
1033
1066
command = self.checker_command % escaped_attrs
1034
1067
except TypeError as error:
1046
1079
# The exception is when not debugging but nevertheless
1047
1080
# running in the foreground; use the previously
1048
1081
# created wnull.
1049
popen_args = { "close_fds": True,
1050
"shell": True,
1051
"cwd": "/" }
1082
popen_args = {"close_fds": True,
1083
"shell": True,
1084
"cwd": "/"}
1052
1085
if (not self.server_settings["debug"]
1053
1086
and self.server_settings["foreground"]):
1054
1087
popen_args.update({"stdout": wnull,
1055
"stderr": wnull })
1056
pipe = multiprocessing.Pipe(duplex = False)
1088
"stderr": wnull})
1089
pipe = multiprocessing.Pipe(duplex=False)
1057
1090
self.checker = multiprocessing.Process(
1058
target = call_pipe,
1059
args = (pipe[1], subprocess.call, command),
1060
kwargs = popen_args)
1091
target=call_pipe,
1092
args=(pipe[1], subprocess.call, command),
1093
kwargs=popen_args)
1061
1094
self.checker.start()
1062
1095
self.checker_callback_tag = GLib.io_add_watch(
1063
1096
pipe[0].fileno(), GLib.IO_IN,
1064
1097
self.checker_callback, pipe[0], command)
1065
1098
# Re-run this periodically if run by GLib.timeout_add
1066
1099
return True
1067
1100
1068
1101
def stop_checker(self):
1069
1102
"""Force the checker process, if any, to stop."""
1070
1103
if self.checker_callback_tag:
1083
1116
byte_arrays=False):
1084
1117
"""Decorators for marking methods of a DBusObjectWithProperties to
1085
1118
become properties on the D-Bus.
1086
1119
1087
1120
The decorated method will be called with no arguments by "Get"
1088
1121
and with one argument by "Set".
1089
1122
1090
1123
The parameters, where they are supported, are the same as
1091
1124
dbus.service.method, except there is only "signature", since the
1092
1125
type from Get() and the type sent to Set() is the same.
1096
1129
if byte_arrays and signature != "ay":
1097
1130
raise ValueError("Byte arrays not supported for non-'ay'"
1098
1131
" signature {!r}".format(signature))
1099
1132
1100
1133
def decorator(func):
1101
1134
func._dbus_is_property = True
1102
1135
func._dbus_interface = dbus_interface
1105
1138
func._dbus_name = func.__name__
1106
1139
if func._dbus_name.endswith("_dbus_property"):
1107
1140
func._dbus_name = func._dbus_name[:-14]
1108
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1141
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1109
1142
return func
1110
1143
1111
1144
return decorator
1112
1145
1113
1146
1114
1147
def dbus_interface_annotations(dbus_interface):
1115
1148
"""Decorator for marking functions returning interface annotations
1116
1149
1117
1150
Usage:
1118
1151
1119
1152
@dbus_interface_annotations("org.example.Interface")
1120
1153
def _foo(self): # Function name does not matter
1121
1154
return {"org.freedesktop.DBus.Deprecated": "true",
1122
1155
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1123
1156
"false"}
1124
1157
"""
1125
1158
1126
1159
def decorator(func):
1127
1160
func._dbus_is_interface = True
1128
1161
func._dbus_interface = dbus_interface
1129
1162
func._dbus_name = dbus_interface
1130
1163
return func
1131
1164
1132
1165
return decorator
1133
1166
1134
1167
1135
1168
def dbus_annotations(annotations):
1136
1169
"""Decorator to annotate D-Bus methods, signals or properties
1137
1170
Usage:
1138
1171
1139
1172
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1140
1173
"org.freedesktop.DBus.Property."
1141
1174
"EmitsChangedSignal": "false"})
1143
1176
access="r")
1144
1177
def Property_dbus_property(self):
1145
1178
return dbus.Boolean(False)
1146
1179
1147
1180
See also the DBusObjectWithAnnotations class.
1148
1181
"""
1149
1182
1150
1183
def decorator(func):
1151
1184
func._dbus_annotations = annotations
1152
1185
return func
1153
1186
1154
1187
return decorator
1155
1188
1156
1189
1174
1207
1175
1208
class DBusObjectWithAnnotations(dbus.service.Object):
1176
1209
"""A D-Bus object with annotations.
1177
1210
1178
1211
Classes inheriting from this can use the dbus_annotations
1179
1212
decorator to add annotations to methods or signals.
1180
1213
"""
1181
1214
1182
1215
@staticmethod
1183
1216
def _is_dbus_thing(thing):
1184
1217
"""Returns a function testing if an attribute is a D-Bus thing
1185
1218
1186
1219
If called like _is_dbus_thing("method") it returns a function
1187
1220
suitable for use as predicate to inspect.getmembers().
1188
1221
"""
1189
1222
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1190
1223
False)
1191
1224
1192
1225
def _get_all_dbus_things(self, thing):
1193
1226
"""Returns a generator of (name, attribute) pairs
1194
1227
"""
1197
1230
for cls in self.__class__.__mro__
1198
1231
for name, athing in
1199
1232
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1200
1233
1201
1234
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1202
out_signature = "s",
1203
path_keyword = 'object_path',
1204
connection_keyword = 'connection')
1235
out_signature="s",
1236
path_keyword='object_path',
1237
connection_keyword='connection')
1205
1238
def Introspect(self, object_path, connection):
1206
1239
"""Overloading of standard D-Bus method.
1207
1240
1208
1241
Inserts annotation tags on methods and signals.
1209
1242
"""
1210
1243
xmlstring = dbus.service.Object.Introspect(self, object_path,
1211
1244
connection)
1212
1245
try:
1213
1246
document = xml.dom.minidom.parseString(xmlstring)
1214
1247
1215
1248
for if_tag in document.getElementsByTagName("interface"):
1216
1249
# Add annotation tags
1217
1250
for typ in ("method", "signal"):
1244
1277
if_tag.appendChild(ann_tag)
1245
1278
# Fix argument name for the Introspect method itself
1246
1279
if (if_tag.getAttribute("name")
1247
== dbus.INTROSPECTABLE_IFACE):
1280
== dbus.INTROSPECTABLE_IFACE):
1248
1281
for cn in if_tag.getElementsByTagName("method"):
1249
1282
if cn.getAttribute("name") == "Introspect":
1250
1283
for arg in cn.getElementsByTagName("arg"):
1263
1296
1264
1297
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1265
1298
"""A D-Bus object with properties.
1266
1299
1267
1300
Classes inheriting from this can use the dbus_service_property
1268
1301
decorator to expose methods as D-Bus properties. It exposes the
1269
1302
standard Get(), Set(), and GetAll() methods on the D-Bus.
1270
1303
"""
1271
1304
1272
1305
def _get_dbus_property(self, interface_name, property_name):
1273
1306
"""Returns a bound method if one exists which is a D-Bus
1274
1307
property with the specified name and interface.
1279
1312
if (value._dbus_name == property_name
1280
1313
and value._dbus_interface == interface_name):
1281
1314
return value.__get__(self)
1282
1315
1283
1316
# No such property
1284
1317
raise DBusPropertyNotFound("{}:{}.{}".format(
1285
1318
self.dbus_object_path, interface_name, property_name))
1286
1319
1287
1320
@classmethod
1288
1321
def _get_all_interface_names(cls):
1289
1322
"""Get a sequence of all interfaces supported by an object"""
1292
1325
for x in (inspect.getmro(cls))
1293
1326
for attr in dir(x))
1294
1327
if name is not None)
1295
1328
1296
1329
@dbus.service.method(dbus.PROPERTIES_IFACE,
1297
1330
in_signature="ss",
1298
1331
out_signature="v")
1306
1339
if not hasattr(value, "variant_level"):
1307
1340
return value
1308
1341
return type(value)(value, variant_level=value.variant_level+1)
1309
1342
1310
1343
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1311
1344
def Set(self, interface_name, property_name, value):
1312
1345
"""Standard D-Bus property Set() method, see D-Bus standard.
1324
1357
value = dbus.ByteArray(b''.join(chr(byte)
1325
1358
for byte in value))
1326
1359
prop(value)
1327
1360
1328
1361
@dbus.service.method(dbus.PROPERTIES_IFACE,
1329
1362
in_signature="s",
1330
1363
out_signature="a{sv}")
1331
1364
def GetAll(self, interface_name):
1332
1365
"""Standard D-Bus property GetAll() method, see D-Bus
1333
1366
standard.
1334
1367
1335
1368
Note: Will not include properties with access="write".
1336
1369
"""
1337
1370
properties = {}
1348
1381
properties[name] = value
1349
1382
continue
1350
1383
properties[name] = type(value)(
1351
value, variant_level = value.variant_level + 1)
1384
value, variant_level=value.variant_level + 1)
1352
1385
return dbus.Dictionary(properties, signature="sv")
1353
1386
1354
1387
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1355
1388
def PropertiesChanged(self, interface_name, changed_properties,
1356
1389
invalidated_properties):
1358
1391
standard.
1359
1392
"""
1360
1393
pass
1361
1394
1362
1395
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1363
1396
out_signature="s",
1364
1397
path_keyword='object_path',
1365
1398
connection_keyword='connection')
1366
1399
def Introspect(self, object_path, connection):
1367
1400
"""Overloading of standard D-Bus method.
1368
1401
1369
1402
Inserts property tags and interface annotation tags.
1370
1403
"""
1371
1404
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1373
1406
connection)
1374
1407
try:
1375
1408
document = xml.dom.minidom.parseString(xmlstring)
1376
1409
1377
1410
def make_tag(document, name, prop):
1378
1411
e = document.createElement("property")
1379
1412
e.setAttribute("name", name)
1380
1413
e.setAttribute("type", prop._dbus_signature)
1381
1414
e.setAttribute("access", prop._dbus_access)
1382
1415
return e
1383
1416
1384
1417
for if_tag in document.getElementsByTagName("interface"):
1385
1418
# Add property tags
1386
1419
for tag in (make_tag(document, name, prop)
1428
1461
exc_info=error)
1429
1462
return xmlstring
1430
1463
1464
1431
1465
try:
1432
1466
dbus.OBJECT_MANAGER_IFACE
1433
1467
except AttributeError:
1434
1468
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1435
1469
1470
1436
1471
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1437
1472
"""A D-Bus object with an ObjectManager.
1438
1473
1439
1474
Classes inheriting from this exposes the standard
1440
1475
GetManagedObjects call and the InterfacesAdded and
1441
1476
InterfacesRemoved signals on the standard
1442
1477
"org.freedesktop.DBus.ObjectManager" interface.
1443
1478
1444
1479
Note: No signals are sent automatically; they must be sent
1445
1480
manually.
1446
1481
"""
1447
1482
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1448
out_signature = "a{oa{sa{sv}}}")
1483
out_signature="a{oa{sa{sv}}}")
1449
1484
def GetManagedObjects(self):
1450
1485
"""This function must be overridden"""
1451
1486
raise NotImplementedError()
1452
1487
1453
1488
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1454
signature = "oa{sa{sv}}")
1489
signature="oa{sa{sv}}")
1455
1490
def InterfacesAdded(self, object_path, interfaces_and_properties):
1456
1491
pass
1457
1458
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1492
1493
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1459
1494
def InterfacesRemoved(self, object_path, interfaces):
1460
1495
pass
1461
1496
1462
1497
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1463
out_signature = "s",
1464
path_keyword = 'object_path',
1465
connection_keyword = 'connection')
1498
out_signature="s",
1499
path_keyword='object_path',
1500
connection_keyword='connection')
1466
1501
def Introspect(self, object_path, connection):
1467
1502
"""Overloading of standard D-Bus method.
1468
1503
1469
1504
Override return argument name of GetManagedObjects to be
1470
1505
"objpath_interfaces_and_properties"
1471
1506
"""
1474
1509
connection)
1475
1510
try:
1476
1511
document = xml.dom.minidom.parseString(xmlstring)
1477
1512
1478
1513
for if_tag in document.getElementsByTagName("interface"):
1479
1514
# Fix argument name for the GetManagedObjects method
1480
1515
if (if_tag.getAttribute("name")
1481
== dbus.OBJECT_MANAGER_IFACE):
1516
== dbus.OBJECT_MANAGER_IFACE):
1482
1517
for cn in if_tag.getElementsByTagName("method"):
1483
1518
if (cn.getAttribute("name")
1484
1519
== "GetManagedObjects"):
1494
1529
except (AttributeError, xml.dom.DOMException,
1495
1530
xml.parsers.expat.ExpatError) as error:
1496
1531
logger.error("Failed to override Introspection method",
1497
exc_info = error)
1532
exc_info=error)
1498
1533
return xmlstring
1499
1534
1535
1500
1536
def datetime_to_dbus(dt, variant_level=0):
1501
1537
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1502
1538
if dt is None:
1503
return dbus.String("", variant_level = variant_level)
1539
return dbus.String("", variant_level=variant_level)
1504
1540
return dbus.String(dt.isoformat(), variant_level=variant_level)
1505
1541
1506
1542
1509
1545
dbus.service.Object, it will add alternate D-Bus attributes with
1510
1546
interface names according to the "alt_interface_names" mapping.
1511
1547
Usage:
1512
1548
1513
1549
@alternate_dbus_interfaces({"org.example.Interface":
1514
1550
"net.example.AlternateInterface"})
1515
1551
class SampleDBusObject(dbus.service.Object):
1516
1552
@dbus.service.method("org.example.Interface")
1517
1553
def SampleDBusMethod():
1518
1554
pass
1519
1555
1520
1556
The above "SampleDBusMethod" on "SampleDBusObject" will be
1521
1557
reachable via two interfaces: "org.example.Interface" and
1522
1558
"net.example.AlternateInterface", the latter of which will have
1523
1559
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1524
1560
"true", unless "deprecate" is passed with a False value.
1525
1561
1526
1562
This works for methods and signals, and also for D-Bus properties
1527
1563
(from DBusObjectWithProperties) and interfaces (from the
1528
1564
dbus_interface_annotations decorator).
1529
1565
"""
1530
1566
1531
1567
def wrapper(cls):
1532
1568
for orig_interface_name, alt_interface_name in (
1533
1569
alt_interface_names.items()):
1573
1609
attribute._dbus_annotations)
1574
1610
except AttributeError:
1575
1611
pass
1612
1576
1613
# Define a creator of a function to call both the
1577
1614
# original and alternate functions, so both the
1578
1615
# original and alternate signals gets sent when
1581
1618
"""This function is a scope container to pass
1582
1619
func1 and func2 to the "call_both" function
1583
1620
outside of its arguments"""
1584
1621
1585
1622
@functools.wraps(func2)
1586
1623
def call_both(*args, **kwargs):
1587
1624
"""This function will emit two D-Bus
1588
1625
signals by calling func1 and func2"""
1589
1626
func1(*args, **kwargs)
1590
1627
func2(*args, **kwargs)
1591
# Make wrapper function look like a D-Bus signal
1628
# Make wrapper function look like a D-Bus
1629
# signal
1592
1630
for name, attr in inspect.getmembers(func2):
1593
1631
if name.startswith("_dbus_"):
1594
1632
setattr(call_both, name, attr)
1595
1633
1596
1634
return call_both
1597
1635
# Create the "call_both" function and add it to
1598
1636
# the class
1644
1682
(copy_function(attribute)))
1645
1683
if deprecate:
1646
1684
# Deprecate all alternate interfaces
1647
iname="_AlternateDBusNames_interface_annotation{}"
1685
iname = "_AlternateDBusNames_interface_annotation{}"
1648
1686
for interface_name in interface_names:
1649
1687
1650
1688
@dbus_interface_annotations(interface_name)
1651
1689
def func(self):
1652
return { "org.freedesktop.DBus.Deprecated":
1653
"true" }
1690
return {"org.freedesktop.DBus.Deprecated":
1691
"true"}
1654
1692
# Find an unused name
1655
1693
for aname in (iname.format(i)
1656
1694
for i in itertools.count()):
1667
1705
cls = type("{}Alternate".format(cls.__name__),
1668
1706
(cls, ), attr)
1669
1707
return cls
1670
1708
1671
1709
return wrapper
1672
1710
1673
1711
1675
1713
"se.bsnet.fukt.Mandos"})
1676
1714
class ClientDBus(Client, DBusObjectWithProperties):
1677
1715
"""A Client class using D-Bus
1678
1716
1679
1717
Attributes:
1680
1718
dbus_object_path: dbus.ObjectPath
1681
1719
bus: dbus.SystemBus()
1682
1720
"""
1683
1721
1684
1722
runtime_expansions = (Client.runtime_expansions
1685
1723
+ ("dbus_object_path", ))
1686
1724
1687
1725
_interface = "se.recompile.Mandos.Client"
1688
1726
1689
1727
# dbus.service.Object doesn't use super(), so we can't either.
1690
1691
def __init__(self, bus = None, *args, **kwargs):
1728
1729
def __init__(self, bus=None, *args, **kwargs):
1692
1730
self.bus = bus
1693
1731
Client.__init__(self, *args, **kwargs)
1694
1732
# Only now, when this client is initialized, can it show up on
1700
1738
"/clients/" + client_object_name)
1701
1739
DBusObjectWithProperties.__init__(self, self.bus,
1702
1740
self.dbus_object_path)
1703
1741
1704
1742
def notifychangeproperty(transform_func, dbus_name,
1705
1743
type_func=lambda x: x,
1706
1744
variant_level=1,
1708
1746
_interface=_interface):
1709
1747
""" Modify a variable so that it's a property which announces
1710
1748
its changes to DBus.
1711
1749
1712
1750
transform_fun: Function that takes a value and a variant_level
1713
1751
and transforms it to a D-Bus type.
1714
1752
dbus_name: D-Bus name of the variable
1717
1755
variant_level: D-Bus variant level. Default: 1
1718
1756
"""
1719
1757
attrname = "_{}".format(dbus_name)
1720
1758
1721
1759
def setter(self, value):
1722
1760
if hasattr(self, "dbus_object_path"):
1723
1761
if (not hasattr(self, attrname) or
1730
1768
else:
1731
1769
dbus_value = transform_func(
1732
1770
type_func(value),
1733
variant_level = variant_level)
1771
variant_level=variant_level)
1734
1772
self.PropertyChanged(dbus.String(dbus_name),
1735
1773
dbus_value)
1736
1774
self.PropertiesChanged(
1737
1775
_interface,
1738
dbus.Dictionary({ dbus.String(dbus_name):
1739
dbus_value }),
1776
dbus.Dictionary({dbus.String(dbus_name):
1777
dbus_value}),
1740
1778
dbus.Array())
1741
1779
setattr(self, attrname, value)
1742
1780
1743
1781
return property(lambda self: getattr(self, attrname), setter)
1744
1782
1745
1783
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1746
1784
approvals_pending = notifychangeproperty(dbus.Boolean,
1747
1785
"ApprovalPending",
1748
type_func = bool)
1786
type_func=bool)
1749
1787
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1750
1788
last_enabled = notifychangeproperty(datetime_to_dbus,
1751
1789
"LastEnabled")
1752
1790
checker = notifychangeproperty(
1753
1791
dbus.Boolean, "CheckerRunning",
1754
type_func = lambda checker: checker is not None)
1792
type_func=lambda checker: checker is not None)
1755
1793
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1756
1794
"LastCheckedOK")
1757
1795
last_checker_status = notifychangeproperty(dbus.Int16,
1762
1800
"ApprovedByDefault")
1763
1801
approval_delay = notifychangeproperty(
1764
1802
dbus.UInt64, "ApprovalDelay",
1765
type_func = lambda td: td.total_seconds() * 1000)
1803
type_func=lambda td: td.total_seconds() * 1000)
1766
1804
approval_duration = notifychangeproperty(
1767
1805
dbus.UInt64, "ApprovalDuration",
1768
type_func = lambda td: td.total_seconds() * 1000)
1806
type_func=lambda td: td.total_seconds() * 1000)
1769
1807
host = notifychangeproperty(dbus.String, "Host")
1770
1808
timeout = notifychangeproperty(
1771
1809
dbus.UInt64, "Timeout",
1772
type_func = lambda td: td.total_seconds() * 1000)
1810
type_func=lambda td: td.total_seconds() * 1000)
1773
1811
extended_timeout = notifychangeproperty(
1774
1812
dbus.UInt64, "ExtendedTimeout",
1775
type_func = lambda td: td.total_seconds() * 1000)
1813
type_func=lambda td: td.total_seconds() * 1000)
1776
1814
interval = notifychangeproperty(
1777
1815
dbus.UInt64, "Interval",
1778
type_func = lambda td: td.total_seconds() * 1000)
1816
type_func=lambda td: td.total_seconds() * 1000)
1779
1817
checker_command = notifychangeproperty(dbus.String, "Checker")
1780
1818
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1781
1819
invalidate_only=True)
1782
1820
1783
1821
del notifychangeproperty
1784
1822
1785
1823
def __del__(self, *args, **kwargs):
1786
1824
try:
1787
1825
self.remove_from_connection()
1790
1828
if hasattr(DBusObjectWithProperties, "__del__"):
1791
1829
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1792
1830
Client.__del__(self, *args, **kwargs)
1793
1831
1794
1832
def checker_callback(self, source, condition,
1795
1833
connection, command, *args, **kwargs):
1796
1834
ret = Client.checker_callback(self, source, condition,
1812
1850
| self.last_checker_signal),
1813
1851
dbus.String(command))
1814
1852
return ret
1815
1853
1816
1854
def start_checker(self, *args, **kwargs):
1817
1855
old_checker_pid = getattr(self.checker, "pid", None)
1818
1856
r = Client.start_checker(self, *args, **kwargs)
1822
1860
# Emit D-Bus signal
1823
1861
self.CheckerStarted(self.current_checker_command)
1824
1862
return r
1825
1863
1826
1864
def _reset_approved(self):
1827
1865
self.approved = None
1828
1866
return False
1829
1867
1830
1868
def approve(self, value=True):
1831
1869
self.approved = value
1832
1870
GLib.timeout_add(int(self.approval_duration.total_seconds()
1833
1871
* 1000), self._reset_approved)
1834
1872
self.send_changedstate()
1835
1836
## D-Bus methods, signals & properties
1837
1838
## Interfaces
1839
1840
## Signals
1841
1873
1874
# D-Bus methods, signals & properties
1875
1876
# Interfaces
1877
1878
# Signals
1879
1842
1880
# CheckerCompleted - signal
1843
1881
@dbus.service.signal(_interface, signature="nxs")
1844
1882
def CheckerCompleted(self, exitcode, waitstatus, command):
1845
1883
"D-Bus signal"
1846
1884
pass
1847
1885
1848
1886
# CheckerStarted - signal
1849
1887
@dbus.service.signal(_interface, signature="s")
1850
1888
def CheckerStarted(self, command):
1851
1889
"D-Bus signal"
1852
1890
pass
1853
1891
1854
1892
# PropertyChanged - signal
1855
1893
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1856
1894
@dbus.service.signal(_interface, signature="sv")
1857
1895
def PropertyChanged(self, property, value):
1858
1896
"D-Bus signal"
1859
1897
pass
1860
1898
1861
1899
# GotSecret - signal
1862
1900
@dbus.service.signal(_interface)
1863
1901
def GotSecret(self):
1866
1904
server to mandos-client
1867
1905
"""
1868
1906
pass
1869
1907
1870
1908
# Rejected - signal
1871
1909
@dbus.service.signal(_interface, signature="s")
1872
1910
def Rejected(self, reason):
1873
1911
"D-Bus signal"
1874
1912
pass
1875
1913
1876
1914
# NeedApproval - signal
1877
1915
@dbus.service.signal(_interface, signature="tb")
1878
1916
def NeedApproval(self, timeout, default):
1879
1917
"D-Bus signal"
1880
1918
return self.need_approval()
1881
1882
## Methods
1883
1919
1920
# Methods
1921
1884
1922
# Approve - method
1885
1923
@dbus.service.method(_interface, in_signature="b")
1886
1924
def Approve(self, value):
1887
1925
self.approve(value)
1888
1926
1889
1927
# CheckedOK - method
1890
1928
@dbus.service.method(_interface)
1891
1929
def CheckedOK(self):
1892
1930
self.checked_ok()
1893
1931
1894
1932
# Enable - method
1895
1933
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1896
1934
@dbus.service.method(_interface)
1897
1935
def Enable(self):
1898
1936
"D-Bus method"
1899
1937
self.enable()
1900
1938
1901
1939
# StartChecker - method
1902
1940
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1903
1941
@dbus.service.method(_interface)
1904
1942
def StartChecker(self):
1905
1943
"D-Bus method"
1906
1944
self.start_checker()
1907
1945
1908
1946
# Disable - method
1909
1947
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1910
1948
@dbus.service.method(_interface)
1911
1949
def Disable(self):
1912
1950
"D-Bus method"
1913
1951
self.disable()
1914
1952
1915
1953
# StopChecker - method
1916
1954
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1917
1955
@dbus.service.method(_interface)
1918
1956
def StopChecker(self):
1919
1957
self.stop_checker()
1920
1921
## Properties
1922
1958
1959
# Properties
1960
1923
1961
# ApprovalPending - property
1924
1962
@dbus_service_property(_interface, signature="b", access="read")
1925
1963
def ApprovalPending_dbus_property(self):
1926
1964
return dbus.Boolean(bool(self.approvals_pending))
1927
1965
1928
1966
# ApprovedByDefault - property
1929
1967
@dbus_service_property(_interface,
1930
1968
signature="b",
1933
1971
if value is None: # get
1934
1972
return dbus.Boolean(self.approved_by_default)
1935
1973
self.approved_by_default = bool(value)
1936
1974
1937
1975
# ApprovalDelay - property
1938
1976
@dbus_service_property(_interface,
1939
1977
signature="t",
1943
1981
return dbus.UInt64(self.approval_delay.total_seconds()
1944
1982
* 1000)
1945
1983
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1946
1984
1947
1985
# ApprovalDuration - property
1948
1986
@dbus_service_property(_interface,
1949
1987
signature="t",
1953
1991
return dbus.UInt64(self.approval_duration.total_seconds()
1954
1992
* 1000)
1955
1993
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1956
1994
1957
1995
# Name - property
1958
1996
@dbus_annotations(
1959
1997
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1960
1998
@dbus_service_property(_interface, signature="s", access="read")
1961
1999
def Name_dbus_property(self):
1962
2000
return dbus.String(self.name)
1963
2001
1964
2002
# Fingerprint - property
1965
2003
@dbus_annotations(
1966
2004
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1967
2005
@dbus_service_property(_interface, signature="s", access="read")
1968
2006
def Fingerprint_dbus_property(self):
1969
2007
return dbus.String(self.fingerprint)
1970
2008
1971
2009
# Host - property
1972
2010
@dbus_service_property(_interface,
1973
2011
signature="s",
1976
2014
if value is None: # get
1977
2015
return dbus.String(self.host)
1978
2016
self.host = str(value)
1979
2017
1980
2018
# Created - property
1981
2019
@dbus_annotations(
1982
2020
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1983
2021
@dbus_service_property(_interface, signature="s", access="read")
1984
2022
def Created_dbus_property(self):
1985
2023
return datetime_to_dbus(self.created)
1986
2024
1987
2025
# LastEnabled - property
1988
2026
@dbus_service_property(_interface, signature="s", access="read")
1989
2027
def LastEnabled_dbus_property(self):
1990
2028
return datetime_to_dbus(self.last_enabled)
1991
2029
1992
2030
# Enabled - property
1993
2031
@dbus_service_property(_interface,
1994
2032
signature="b",
2000
2038
self.enable()
2001
2039
else:
2002
2040
self.disable()
2003
2041
2004
2042
# LastCheckedOK - property
2005
2043
@dbus_service_property(_interface,
2006
2044
signature="s",
2010
2048
self.checked_ok()
2011
2049
return
2012
2050
return datetime_to_dbus(self.last_checked_ok)
2013
2051
2014
2052
# LastCheckerStatus - property
2015
2053
@dbus_service_property(_interface, signature="n", access="read")
2016
2054
def LastCheckerStatus_dbus_property(self):
2017
2055
return dbus.Int16(self.last_checker_status)
2018
2056
2019
2057
# Expires - property
2020
2058
@dbus_service_property(_interface, signature="s", access="read")
2021
2059
def Expires_dbus_property(self):
2022
2060
return datetime_to_dbus(self.expires)
2023
2061
2024
2062
# LastApprovalRequest - property
2025
2063
@dbus_service_property(_interface, signature="s", access="read")
2026
2064
def LastApprovalRequest_dbus_property(self):
2027
2065
return datetime_to_dbus(self.last_approval_request)
2028
2066
2029
2067
# Timeout - property
2030
2068
@dbus_service_property(_interface,
2031
2069
signature="t",
2050
2088
self.disable_initiator_tag = GLib.timeout_add(
2051
2089
int((self.expires - now).total_seconds() * 1000),
2052
2090
self.disable)
2053
2091
2054
2092
# ExtendedTimeout - property
2055
2093
@dbus_service_property(_interface,
2056
2094
signature="t",
2060
2098
return dbus.UInt64(self.extended_timeout.total_seconds()
2061
2099
* 1000)
2062
2100
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2063
2101
2064
2102
# Interval - property
2065
2103
@dbus_service_property(_interface,
2066
2104
signature="t",
2076
2114
GLib.source_remove(self.checker_initiator_tag)
2077
2115
self.checker_initiator_tag = GLib.timeout_add(
2078
2116
value, self.start_checker)
2079
self.start_checker() # Start one now, too
2080
2117
self.start_checker() # Start one now, too
2118
2081
2119
# Checker - property
2082
2120
@dbus_service_property(_interface,
2083
2121
signature="s",
2086
2124
if value is None: # get
2087
2125
return dbus.String(self.checker_command)
2088
2126
self.checker_command = str(value)
2089
2127
2090
2128
# CheckerRunning - property
2091
2129
@dbus_service_property(_interface,
2092
2130
signature="b",
2098
2136
self.start_checker()
2099
2137
else:
2100
2138
self.stop_checker()
2101
2139
2102
2140
# ObjectPath - property
2103
2141
@dbus_annotations(
2104
2142
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2105
2143
"org.freedesktop.DBus.Deprecated": "true"})
2106
2144
@dbus_service_property(_interface, signature="o", access="read")
2107
2145
def ObjectPath_dbus_property(self):
2108
return self.dbus_object_path # is already a dbus.ObjectPath
2109
2146
return self.dbus_object_path # is already a dbus.ObjectPath
2147
2110
2148
# Secret = property
2111
2149
@dbus_annotations(
2112
2150
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2117
2155
byte_arrays=True)
2118
2156
def Secret_dbus_property(self, value):
2119
2157
self.secret = bytes(value)
2120
2158
2121
2159
del _interface
2122
2160
2123
2161
2127
2165
self._pipe.send(('init', fpr, address))
2128
2166
if not self._pipe.recv():
2129
2167
raise KeyError(fpr)
2130
2168
2131
2169
def __getattribute__(self, name):
2132
2170
if name == '_pipe':
2133
2171
return super(ProxyClient, self).__getattribute__(name)
2136
2174
if data[0] == 'data':
2137
2175
return data[1]
2138
2176
if data[0] == 'function':
2139
2177
2140
2178
def func(*args, **kwargs):
2141
2179
self._pipe.send(('funcall', name, args, kwargs))
2142
2180
return self._pipe.recv()[1]
2143
2181
2144
2182
return func
2145
2183
2146
2184
def __setattr__(self, name, value):
2147
2185
if name == '_pipe':
2148
2186
return super(ProxyClient, self).__setattr__(name, value)
2151
2189
2152
2190
class ClientHandler(socketserver.BaseRequestHandler, object):
2153
2191
"""A class to handle client connections.
2154
2192
2155
2193
Instantiated once for each connection to handle it.
2156
2194
Note: This will run in its own forked process."""
2157
2195
2158
2196
def handle(self):
2159
2197
with contextlib.closing(self.server.child_pipe) as child_pipe:
2160
2198
logger.info("TCP connection from: %s",
2161
2199
str(self.client_address))
2162
2200
logger.debug("Pipe FD: %d",
2163
2201
self.server.child_pipe.fileno())
2164
2202
2165
2203
session = gnutls.ClientSession(self.request)
2166
2167
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2168
# "+AES-256-CBC", "+SHA1",
2169
# "+COMP-NULL", "+CTYPE-OPENPGP",
2170
# "+DHE-DSS"))
2204
2205
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2206
# "+AES-256-CBC", "+SHA1",
2207
# "+COMP-NULL", "+CTYPE-OPENPGP",
2208
# "+DHE-DSS"))
2171
2209
# Use a fallback default, since this MUST be set.
2172
2210
priority = self.server.gnutls_priority
2173
2211
if priority is None:
2174
2212
priority = "NORMAL"
2175
gnutls.priority_set_direct(session._c_object, priority,
2213
gnutls.priority_set_direct(session._c_object,
2214
priority.encode("utf-8"),
2176
2215
None)
2177
2216
2178
2217
# Start communication using the Mandos protocol
2179
2218
# Get protocol number
2180
2219
line = self.request.makefile().readline()
2185
2224
except (ValueError, IndexError, RuntimeError) as error:
2186
2225
logger.error("Unknown protocol version: %s", error)
2187
2226
return
2188
2227
2189
2228
# Start GnuTLS connection
2190
2229
try:
2191
2230
session.handshake()
2195
2234
# established. Just abandon the request.
2196
2235
return
2197
2236
logger.debug("Handshake succeeded")
2198
2237
2199
2238
approval_required = False
2200
2239
try:
2201
2240
try:
2205
2244
logger.warning("Bad certificate: %s", error)
2206
2245
return
2207
2246
logger.debug("Fingerprint: %s", fpr)
2208
2247
2209
2248
try:
2210
2249
client = ProxyClient(child_pipe, fpr,
2211
2250
self.client_address)
2212
2251
except KeyError:
2213
2252
return
2214
2253
2215
2254
if client.approval_delay:
2216
2255
delay = client.approval_delay
2217
2256
client.approvals_pending += 1
2218
2257
approval_required = True
2219
2258
2220
2259
while True:
2221
2260
if not client.enabled:
2222
2261
logger.info("Client %s is disabled",
2225
2264
# Emit D-Bus signal
2226
2265
client.Rejected("Disabled")
2227
2266
return
2228
2267
2229
2268
if client.approved or not client.approval_delay:
2230
#We are approved or approval is disabled
2269
# We are approved or approval is disabled
2231
2270
break
2232
2271
elif client.approved is None:
2233
2272
logger.info("Client %s needs approval",
2244
2283
# Emit D-Bus signal
2245
2284
client.Rejected("Denied")
2246
2285
return
2247
2248
#wait until timeout or approved
2286
2287
# wait until timeout or approved
2249
2288
time = datetime.datetime.now()
2250
2289
client.changedstate.acquire()
2251
2290
client.changedstate.wait(delay.total_seconds())
2264
2303
break
2265
2304
else:
2266
2305
delay -= time2 - time
2267
2306
2268
2307
try:
2269
2308
session.send(client.secret)
2270
2309
except gnutls.Error as error:
2271
2310
logger.warning("gnutls send failed",
2272
exc_info = error)
2311
exc_info=error)
2273
2312
return
2274
2313
2275
2314
logger.info("Sending secret to %s", client.name)
2276
2315
# bump the timeout using extended_timeout
2277
2316
client.bump_timeout(client.extended_timeout)
2278
2317
if self.server.use_dbus:
2279
2318
# Emit D-Bus signal
2280
2319
client.GotSecret()
2281
2320
2282
2321
finally:
2283
2322
if approval_required:
2284
2323
client.approvals_pending -= 1
2287
2326
except gnutls.Error as error:
2288
2327
logger.warning("GnuTLS bye failed",
2289
2328
exc_info=error)
2290
2329
2291
2330
@staticmethod
2292
2331
def peer_certificate(session):
2293
2332
"Return the peer's OpenPGP certificate as a bytestring"
2305
2344
return None
2306
2345
cert = cert_list[0]
2307
2346
return ctypes.string_at(cert.data, cert.size)
2308
2347
2309
2348
@staticmethod
2310
2349
def fingerprint(openpgp):
2311
2350
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2344
2383
2345
2384
class MultiprocessingMixIn(object):
2346
2385
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2347
2386
2348
2387
def sub_process_main(self, request, address):
2349
2388
try:
2350
2389
self.finish_request(request, address)
2351
2390
except Exception:
2352
2391
self.handle_error(request, address)
2353
2392
self.close_request(request)
2354
2393
2355
2394
def process_request(self, request, address):
2356
2395
"""Start a new process to process the request."""
2357
proc = multiprocessing.Process(target = self.sub_process_main,
2358
args = (request, address))
2396
proc = multiprocessing.Process(target=self.sub_process_main,
2397
args=(request, address))
2359
2398
proc.start()
2360
2399
return proc
2361
2400
2362
2401
2363
2402
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2364
2403
""" adds a pipe to the MixIn """
2365
2404
2366
2405
def process_request(self, request, client_address):
2367
2406
"""Overrides and wraps the original process_request().
2368
2407
2369
2408
This function creates a new pipe in self.pipe
2370
2409
"""
2371
2410
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2372
2411
2373
2412
proc = MultiprocessingMixIn.process_request(self, request,
2374
2413
client_address)
2375
2414
self.child_pipe.close()
2376
2415
self.add_pipe(parent_pipe, proc)
2377
2416
2378
2417
def add_pipe(self, parent_pipe, proc):
2379
2418
"""Dummy function; override as necessary"""
2380
2419
raise NotImplementedError()
2383
2422
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2384
2423
socketserver.TCPServer, object):
2385
2424
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2386
2425
2387
2426
Attributes:
2388
2427
enabled: Boolean; whether this server is activated yet
2389
2428
interface: None or a network interface name (string)
2390
2429
use_ipv6: Boolean; to use IPv6 or not
2391
2430
"""
2392
2431
2393
2432
def __init__(self, server_address, RequestHandlerClass,
2394
2433
interface=None,
2395
2434
use_ipv6=True,
2405
2444
self.socketfd = socketfd
2406
2445
# Save the original socket.socket() function
2407
2446
self.socket_socket = socket.socket
2447
2408
2448
# To implement --socket, we monkey patch socket.socket.
2409
#
2449
#
2410
2450
# (When socketserver.TCPServer is a new-style class, we
2411
2451
# could make self.socket into a property instead of monkey
2412
2452
# patching socket.socket.)
2413
#
2453
#
2414
2454
# Create a one-time-only replacement for socket.socket()
2415
2455
@functools.wraps(socket.socket)
2416
2456
def socket_wrapper(*args, **kwargs):
2428
2468
# socket_wrapper(), if socketfd was set.
2429
2469
socketserver.TCPServer.__init__(self, server_address,
2430
2470
RequestHandlerClass)
2431
2471
2432
2472
def server_bind(self):
2433
2473
"""This overrides the normal server_bind() function
2434
2474
to bind to an interface if one was specified, and also NOT to
2435
2475
bind to an address or port if they were not specified."""
2476
global SO_BINDTODEVICE
2436
2477
if self.interface is not None:
2437
2478
if SO_BINDTODEVICE is None:
2438
logger.error("SO_BINDTODEVICE does not exist;"
2439
" cannot bind to interface %s",
2440
self.interface)
2441
else:
2442
try:
2443
self.socket.setsockopt(
2444
socket.SOL_SOCKET, SO_BINDTODEVICE,
2445
(self.interface + "\0").encode("utf-8"))
2446
except socket.error as error:
2447
if error.errno == errno.EPERM:
2448
logger.error("No permission to bind to"
2449
" interface %s", self.interface)
2450
elif error.errno == errno.ENOPROTOOPT:
2451
logger.error("SO_BINDTODEVICE not available;"
2452
" cannot bind to interface %s",
2453
self.interface)
2454
elif error.errno == errno.ENODEV:
2455
logger.error("Interface %s does not exist,"
2456
" cannot bind", self.interface)
2457
else:
2458
raise
2479
# Fall back to a hard-coded value which seems to be
2480
# common enough.
2481
logger.warning("SO_BINDTODEVICE not found, trying 25")
2482
SO_BINDTODEVICE = 25
2483
try:
2484
self.socket.setsockopt(
2485
socket.SOL_SOCKET, SO_BINDTODEVICE,
2486
(self.interface + "\0").encode("utf-8"))
2487
except socket.error as error:
2488
if error.errno == errno.EPERM:
2489
logger.error("No permission to bind to"
2490
" interface %s", self.interface)
2491
elif error.errno == errno.ENOPROTOOPT:
2492
logger.error("SO_BINDTODEVICE not available;"
2493
" cannot bind to interface %s",
2494
self.interface)
2495
elif error.errno == errno.ENODEV:
2496
logger.error("Interface %s does not exist,"
2497
" cannot bind", self.interface)
2498
else:
2499
raise
2459
2500
# Only bind(2) the socket if we really need to.
2460
2501
if self.server_address[0] or self.server_address[1]:
2461
2502
if not self.server_address[0]:
2462
2503
if self.address_family == socket.AF_INET6:
2463
any_address = "::" # in6addr_any
2504
any_address = "::" # in6addr_any
2464
2505
else:
2465
any_address = "0.0.0.0" # INADDR_ANY
2506
any_address = "0.0.0.0" # INADDR_ANY
2466
2507
self.server_address = (any_address,
2467
2508
self.server_address[1])
2468
2509
elif not self.server_address[1]:
2478
2519
2479
2520
class MandosServer(IPv6_TCPServer):
2480
2521
"""Mandos server.
2481
2522
2482
2523
Attributes:
2483
2524
clients: set of Client objects
2484
2525
gnutls_priority GnuTLS priority string
2485
2526
use_dbus: Boolean; to emit D-Bus signals or not
2486
2527
2487
2528
Assumes a GLib.MainLoop event loop.
2488
2529
"""
2489
2530
2490
2531
def __init__(self, server_address, RequestHandlerClass,
2491
2532
interface=None,
2492
2533
use_ipv6=True,
2502
2543
self.gnutls_priority = gnutls_priority
2503
2544
IPv6_TCPServer.__init__(self, server_address,
2504
2545
RequestHandlerClass,
2505
interface = interface,
2506
use_ipv6 = use_ipv6,
2507
socketfd = socketfd)
2508
2546
interface=interface,
2547
use_ipv6=use_ipv6,
2548
socketfd=socketfd)
2549
2509
2550
def server_activate(self):
2510
2551
if self.enabled:
2511
2552
return socketserver.TCPServer.server_activate(self)
2512
2553
2513
2554
def enable(self):
2514
2555
self.enabled = True
2515
2556
2516
2557
def add_pipe(self, parent_pipe, proc):
2517
2558
# Call "handle_ipc" for both data and EOF events
2518
2559
GLib.io_add_watch(
2519
2560
parent_pipe.fileno(),
2520
2561
GLib.IO_IN | GLib.IO_HUP,
2521
2562
functools.partial(self.handle_ipc,
2522
parent_pipe = parent_pipe,
2523
proc = proc))
2524
2563
parent_pipe=parent_pipe,
2564
proc=proc))
2565
2525
2566
def handle_ipc(self, source, condition,
2526
2567
parent_pipe=None,
2527
proc = None,
2568
proc=None,
2528
2569
client_object=None):
2529
2570
# error, or the other end of multiprocessing.Pipe has closed
2530
2571
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2531
2572
# Wait for other process to exit
2532
2573
proc.join()
2533
2574
return False
2534
2575
2535
2576
# Read a request from the child
2536
2577
request = parent_pipe.recv()
2537
2578
command = request[0]
2538
2579
2539
2580
if command == 'init':
2540
fpr = request[1]
2581
fpr = request[1].decode("ascii")
2541
2582
address = request[2]
2542
2583
2543
2584
for c in self.clients.values():
2544
2585
if c.fingerprint == fpr:
2545
2586
client = c
2553
2594
address[0])
2554
2595
parent_pipe.send(False)
2555
2596
return False
2556
2597
2557
2598
GLib.io_add_watch(
2558
2599
parent_pipe.fileno(),
2559
2600
GLib.IO_IN | GLib.IO_HUP,
2560
2601
functools.partial(self.handle_ipc,
2561
parent_pipe = parent_pipe,
2562
proc = proc,
2563
client_object = client))
2602
parent_pipe=parent_pipe,
2603
proc=proc,
2604
client_object=client))
2564
2605
parent_pipe.send(True)
2565
2606
# remove the old hook in favor of the new above hook on
2566
2607
# same fileno
2569
2610
funcname = request[1]
2570
2611
args = request[2]
2571
2612
kwargs = request[3]
2572
2613
2573
2614
parent_pipe.send(('data', getattr(client_object,
2574
2615
funcname)(*args,
2575
2616
**kwargs)))
2576
2617
2577
2618
if command == 'getattr':
2578
2619
attrname = request[1]
2579
2620
if isinstance(client_object.__getattribute__(attrname),
2582
2623
else:
2583
2624
parent_pipe.send((
2584
2625
'data', client_object.__getattribute__(attrname)))
2585
2626
2586
2627
if command == 'setattr':
2587
2628
attrname = request[1]
2588
2629
value = request[2]
2589
2630
setattr(client_object, attrname, value)
2590
2631
2591
2632
return True
2592
2633
2593
2634
2594
2635
def rfc3339_duration_to_delta(duration):
2595
2636
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2596
2637
2597
2638
>>> rfc3339_duration_to_delta("P7D")
2598
2639
datetime.timedelta(7)
2599
2640
>>> rfc3339_duration_to_delta("PT60S")
2609
2650
>>> rfc3339_duration_to_delta("P1DT3M20S")
2610
2651
datetime.timedelta(1, 200)
2611
2652
"""
2612
2653
2613
2654
# Parsing an RFC 3339 duration with regular expressions is not
2614
2655
# possible - there would have to be multiple places for the same
2615
2656
# values, like seconds. The current code, while more esoteric, is
2616
2657
# cleaner without depending on a parsing library. If Python had a
2617
2658
# built-in library for parsing we would use it, but we'd like to
2618
2659
# avoid excessive use of external libraries.
2619
2660
2620
2661
# New type for defining tokens, syntax, and semantics all-in-one
2621
2662
Token = collections.namedtuple("Token", (
2622
2663
"regexp", # To match token; if "value" is not None, must have
2655
2696
frozenset((token_year, token_month,
2656
2697
token_day, token_time,
2657
2698
token_week)))
2658
# Define starting values
2659
value = datetime.timedelta() # Value so far
2699
# Define starting values:
2700
# Value so far
2701
value = datetime.timedelta()
2660
2702
found_token = None
2661
followers = frozenset((token_duration, )) # Following valid tokens
2662
s = duration # String left to parse
2703
# Following valid tokens
2704
followers = frozenset((token_duration, ))
2705
# String left to parse
2706
s = duration
2663
2707
# Loop until end token is found
2664
2708
while found_token is not token_end:
2665
2709
# Search for any currently valid tokens
2689
2733
2690
2734
def string_to_delta(interval):
2691
2735
"""Parse a string and return a datetime.timedelta
2692
2736
2693
2737
>>> string_to_delta('7d')
2694
2738
datetime.timedelta(7)
2695
2739
>>> string_to_delta('60s')
2703
2747
>>> string_to_delta('5m 30s')
2704
2748
datetime.timedelta(0, 330)
2705
2749
"""
2706
2750
2707
2751
try:
2708
2752
return rfc3339_duration_to_delta(interval)
2709
2753
except ValueError:
2710
2754
pass
2711
2755
2712
2756
timevalue = datetime.timedelta(0)
2713
2757
for s in interval.split():
2714
2758
try:
2732
2776
return timevalue
2733
2777
2734
2778
2735
def daemon(nochdir = False, noclose = False):
2779
def daemon(nochdir=False, noclose=False):
2736
2780
"""See daemon(3). Standard BSD Unix function.
2737
2781
2738
2782
This should really exist as os.daemon, but it doesn't (yet)."""
2739
2783
if os.fork():
2740
2784
sys.exit()
2758
2802
2759
2803
2760
2804
def main():
2761
2805
2762
2806
##################################################################
2763
2807
# Parsing of options, both command line and config file
2764
2808
2765
2809
parser = argparse.ArgumentParser()
2766
2810
parser.add_argument("-v", "--version", action="version",
2767
version = "%(prog)s {}".format(version),
2811
version="%(prog)s {}".format(version),
2768
2812
help="show version number and exit")
2769
2813
parser.add_argument("-i", "--interface", metavar="IF",
2770
2814
help="Bind to interface IF")
2806
2850
parser.add_argument("--no-zeroconf", action="store_false",
2807
2851
dest="zeroconf", help="Do not use Zeroconf",
2808
2852
default=None)
2809
2853
2810
2854
options = parser.parse_args()
2811
2855
2812
2856
if options.check:
2813
2857
import doctest
2814
2858
fail_count, test_count = doctest.testmod()
2815
2859
sys.exit(os.EX_OK if fail_count == 0 else 1)
2816
2860
2817
2861
# Default values for config file for server-global settings
2818
server_defaults = { "interface": "",
2819
"address": "",
2820
"port": "",
2821
"debug": "False",
2822
"priority":
2823
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2824
":+SIGN-DSA-SHA256",
2825
"servicename": "Mandos",
2826
"use_dbus": "True",
2827
"use_ipv6": "True",
2828
"debuglevel": "",
2829
"restore": "True",
2830
"socket": "",
2831
"statedir": "/var/lib/mandos",
2832
"foreground": "False",
2833
"zeroconf": "True",
2834
}
2835
2862
server_defaults = {"interface": "",
2863
"address": "",
2864
"port": "",
2865
"debug": "False",
2866
"priority":
2867
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2868
":+SIGN-DSA-SHA256",
2869
"servicename": "Mandos",
2870
"use_dbus": "True",
2871
"use_ipv6": "True",
2872
"debuglevel": "",
2873
"restore": "True",
2874
"socket": "",
2875
"statedir": "/var/lib/mandos",
2876
"foreground": "False",
2877
"zeroconf": "True",
2878
}
2879
2836
2880
# Parse config file for server-global settings
2837
2881
server_config = configparser.SafeConfigParser(server_defaults)
2838
2882
del server_defaults
2840
2884
# Convert the SafeConfigParser object to a dict
2841
2885
server_settings = server_config.defaults()
2842
2886
# Use the appropriate methods on the non-string config options
2843
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2887
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2888
"foreground", "zeroconf"):
2844
2889
server_settings[option] = server_config.getboolean("DEFAULT",
2845
2890
option)
2846
2891
if server_settings["port"]:
2856
2901
server_settings["socket"] = os.dup(server_settings
2857
2902
["socket"])
2858
2903
del server_config
2859
2904
2860
2905
# Override the settings from the config file with command line
2861
2906
# options, if set.
2862
2907
for option in ("interface", "address", "port", "debug",
2880
2925
if server_settings["debug"]:
2881
2926
server_settings["foreground"] = True
2882
2927
# Now we have our good server settings in "server_settings"
2883
2928
2884
2929
##################################################################
2885
2930
2886
2931
if (not server_settings["zeroconf"]
2887
2932
and not (server_settings["port"]
2888
2933
or server_settings["socket"] != "")):
2889
2934
parser.error("Needs port or socket to work without Zeroconf")
2890
2935
2891
2936
# For convenience
2892
2937
debug = server_settings["debug"]
2893
2938
debuglevel = server_settings["debuglevel"]
2897
2942
stored_state_file)
2898
2943
foreground = server_settings["foreground"]
2899
2944
zeroconf = server_settings["zeroconf"]
2900
2945
2901
2946
if debug:
2902
2947
initlogger(debug, logging.DEBUG)
2903
2948
else:
2906
2951
else:
2907
2952
level = getattr(logging, debuglevel.upper())
2908
2953
initlogger(debug, level)
2909
2954
2910
2955
if server_settings["servicename"] != "Mandos":
2911
2956
syslogger.setFormatter(
2912
2957
logging.Formatter('Mandos ({}) [%(process)d]:'
2913
2958
' %(levelname)s: %(message)s'.format(
2914
2959
server_settings["servicename"])))
2915
2960
2916
2961
# Parse config file with clients
2917
2962
client_config = configparser.SafeConfigParser(Client
2918
2963
.client_defaults)
2919
2964
client_config.read(os.path.join(server_settings["configdir"],
2920
2965
"clients.conf"))
2921
2966
2922
2967
global mandos_dbus_service
2923
2968
mandos_dbus_service = None
2924
2969
2925
2970
socketfd = None
2926
2971
if server_settings["socket"] != "":
2927
2972
socketfd = server_settings["socket"]
2943
2988
except IOError as e:
2944
2989
logger.error("Could not open file %r", pidfilename,
2945
2990
exc_info=e)
2946
2991
2947
2992
for name, group in (("_mandos", "_mandos"),
2948
2993
("mandos", "mandos"),
2949
2994
("nobody", "nogroup")):
2967
3012
.format(uid, gid, os.strerror(error.errno)))
2968
3013
if error.errno != errno.EPERM:
2969
3014
raise
2970
3015
2971
3016
if debug:
2972
3017
# Enable all possible GnuTLS debugging
2973
3018
2974
3019
# "Use a log level over 10 to enable all debugging options."
2975
3020
# - GnuTLS manual
2976
3021
gnutls.global_set_log_level(11)
2977
3022
2978
3023
@gnutls.log_func
2979
3024
def debug_gnutls(level, string):
2980
3025
logger.debug("GnuTLS: %s", string[:-1])
2981
3026
2982
3027
gnutls.global_set_log_function(debug_gnutls)
2983
3028
2984
3029
# Redirect stdin so all checkers get /dev/null
2985
3030
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2986
3031
os.dup2(null, sys.stdin.fileno())
2987
3032
if null > 2:
2988
3033
os.close(null)
2989
3034
2990
3035
# Need to fork before connecting to D-Bus
2991
3036
if not foreground:
2992
3037
# Close all input and output, do double fork, etc.
2993
3038
daemon()
2994
3039
2995
3040
# multiprocessing will use threads, so before we use GLib we need
2996
3041
# to inform GLib that threads will be used.
2997
3042
GLib.threads_init()
2998
3043
2999
3044
global main_loop
3000
3045
# From the Avahi example code
3001
3046
DBusGMainLoop(set_as_default=True)
3018
3063
if zeroconf:
3019
3064
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3020
3065
service = AvahiServiceToSyslog(
3021
name = server_settings["servicename"],
3022
servicetype = "_mandos._tcp",
3023
protocol = protocol,
3024
bus = bus)
3066
name=server_settings["servicename"],
3067
servicetype="_mandos._tcp",
3068
protocol=protocol,
3069
bus=bus)
3025
3070
if server_settings["interface"]:
3026
3071
service.interface = if_nametoindex(
3027
3072
server_settings["interface"].encode("utf-8"))
3028
3073
3029
3074
global multiprocessing_manager
3030
3075
multiprocessing_manager = multiprocessing.Manager()
3031
3076
3032
3077
client_class = Client
3033
3078
if use_dbus:
3034
client_class = functools.partial(ClientDBus, bus = bus)
3035
3079
client_class = functools.partial(ClientDBus, bus=bus)
3080
3036
3081
client_settings = Client.config_parser(client_config)
3037
3082
old_client_settings = {}
3038
3083
clients_data = {}
3039
3084
3040
3085
# This is used to redirect stdout and stderr for checker processes
3041
3086
global wnull
3042
wnull = open(os.devnull, "w") # A writable /dev/null
3087
wnull = open(os.devnull, "w") # A writable /dev/null
3043
3088
# Only used if server is running in foreground but not in debug
3044
3089
# mode
3045
3090
if debug or not foreground:
3046
3091
wnull.close()
3047
3092
3048
3093
# Get client data and settings from last running state.
3049
3094
if server_settings["restore"]:
3050
3095
try:
3051
3096
with open(stored_state_path, "rb") as stored_state:
3052
if sys.version_info.major == 2:
3097
if sys.version_info.major == 2:
3053
3098
clients_data, old_client_settings = pickle.load(
3054
3099
stored_state)
3055
3100
else:
3056
3101
bytes_clients_data, bytes_old_client_settings = (
3057
pickle.load(stored_state, encoding = "bytes"))
3058
### Fix bytes to strings
3059
## clients_data
3102
pickle.load(stored_state, encoding="bytes"))
3103
# Fix bytes to strings
3104
# clients_data
3060
3105
# .keys()
3061
clients_data = { (key.decode("utf-8")
3062
if isinstance(key, bytes)
3063
else key): value
3064
for key, value in
3065
bytes_clients_data.items() }
3106
clients_data = {(key.decode("utf-8")
3107
if isinstance(key, bytes)
3108
else key): value
3109
for key, value in
3110
bytes_clients_data.items()}
3066
3111
del bytes_clients_data
3067
3112
for key in clients_data:
3068
value = { (k.decode("utf-8")
3069
if isinstance(k, bytes) else k): v
3070
for k, v in
3071
clients_data[key].items() }
3113
value = {(k.decode("utf-8")
3114
if isinstance(k, bytes) else k): v
3115
for k, v in
3116
clients_data[key].items()}
3072
3117
clients_data[key] = value
3073
3118
# .client_structure
3074
3119
value["client_structure"] = [
3075
3120
(s.decode("utf-8")
3076
3121
if isinstance(s, bytes)
3077
3122
else s) for s in
3078
value["client_structure"] ]
3123
value["client_structure"]]
3079
3124
# .name & .host
3080
3125
for k in ("name", "host"):
3081
3126
if isinstance(value[k], bytes):
3082
3127
value[k] = value[k].decode("utf-8")
3083
## old_client_settings
3128
# old_client_settings
3084
3129
# .keys()
3085
3130
old_client_settings = {
3086
3131
(key.decode("utf-8")
3087
3132
if isinstance(key, bytes)
3088
3133
else key): value
3089
3134
for key, value in
3090
bytes_old_client_settings.items() }
3135
bytes_old_client_settings.items()}
3091
3136
del bytes_old_client_settings
3092
3137
# .host
3093
3138
for value in old_client_settings.values():
3107
3152
logger.warning("Could not load persistent state: "
3108
3153
"EOFError:",
3109
3154
exc_info=e)
3110
3155
3111
3156
with PGPEngine() as pgp:
3112
3157
for client_name, client in clients_data.items():
3113
3158
# Skip removed clients
3114
3159
if client_name not in client_settings:
3115
3160
continue
3116
3161
3117
3162
# Decide which value to use after restoring saved state.
3118
3163
# We have three different values: Old config file,
3119
3164
# new config file, and saved state.
3130
3175
client[name] = value
3131
3176
except KeyError:
3132
3177
pass
3133
3178
3134
3179
# Clients who has passed its expire date can still be
3135
3180
# enabled if its last checker was successful. A Client
3136
3181
# whose checker succeeded before we stored its state is
3169
3214
client_name))
3170
3215
client["secret"] = (client_settings[client_name]
3171
3216
["secret"])
3172
3217
3173
3218
# Add/remove clients based on new changes made to config
3174
3219
for client_name in (set(old_client_settings)
3175
3220
- set(client_settings)):
3177
3222
for client_name in (set(client_settings)
3178
3223
- set(old_client_settings)):
3179
3224
clients_data[client_name] = client_settings[client_name]
3180
3225
3181
3226
# Create all client objects
3182
3227
for client_name, client in clients_data.items():
3183
3228
tcp_server.clients[client_name] = client_class(
3184
name = client_name,
3185
settings = client,
3186
server_settings = server_settings)
3187
3229
name=client_name,
3230
settings=client,
3231
server_settings=server_settings)
3232
3188
3233
if not tcp_server.clients:
3189
3234
logger.warning("No clients defined")
3190
3235
3191
3236
if not foreground:
3192
3237
if pidfile is not None:
3193
3238
pid = os.getpid()
3199
3244
pidfilename, pid)
3200
3245
del pidfile
3201
3246
del pidfilename
3202
3247
3203
3248
for termsig in (signal.SIGHUP, signal.SIGTERM):
3204
3249
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3205
3250
lambda: main_loop.quit() and False)
3206
3251
3207
3252
if use_dbus:
3208
3253
3209
3254
@alternate_dbus_interfaces(
3210
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3255
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3211
3256
class MandosDBusService(DBusObjectWithObjectManager):
3212
3257
"""A D-Bus proxy object"""
3213
3258
3214
3259
def __init__(self):
3215
3260
dbus.service.Object.__init__(self, bus, "/")
3216
3261
3217
3262
_interface = "se.recompile.Mandos"
3218
3263
3219
3264
@dbus.service.signal(_interface, signature="o")
3220
3265
def ClientAdded(self, objpath):
3221
3266
"D-Bus signal"
3222
3267
pass
3223
3268
3224
3269
@dbus.service.signal(_interface, signature="ss")
3225
3270
def ClientNotFound(self, fingerprint, address):
3226
3271
"D-Bus signal"
3227
3272
pass
3228
3273
3229
3274
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3230
3275
"true"})
3231
3276
@dbus.service.signal(_interface, signature="os")
3232
3277
def ClientRemoved(self, objpath, name):
3233
3278
"D-Bus signal"
3234
3279
pass
3235
3280
3236
3281
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3237
3282
"true"})
3238
3283
@dbus.service.method(_interface, out_signature="ao")
3240
3285
"D-Bus method"
3241
3286
return dbus.Array(c.dbus_object_path for c in
3242
3287
tcp_server.clients.values())
3243
3288
3244
3289
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3245
3290
"true"})
3246
3291
@dbus.service.method(_interface,
3248
3293
def GetAllClientsWithProperties(self):
3249
3294
"D-Bus method"
3250
3295
return dbus.Dictionary(
3251
{ c.dbus_object_path: c.GetAll(
3296
{c.dbus_object_path: c.GetAll(
3252
3297
"se.recompile.Mandos.Client")
3253
for c in tcp_server.clients.values() },
3298
for c in tcp_server.clients.values()},
3254
3299
signature="oa{sv}")
3255
3300
3256
3301
@dbus.service.method(_interface, in_signature="o")
3257
3302
def RemoveClient(self, object_path):
3258
3303
"D-Bus method"
3266
3311
self.client_removed_signal(c)
3267
3312
return
3268
3313
raise KeyError(object_path)
3269
3314
3270
3315
del _interface
3271
3316
3272
3317
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3273
out_signature = "a{oa{sa{sv}}}")
3318
out_signature="a{oa{sa{sv}}}")
3274
3319
def GetManagedObjects(self):
3275
3320
"""D-Bus method"""
3276
3321
return dbus.Dictionary(
3277
{ client.dbus_object_path:
3278
dbus.Dictionary(
3279
{ interface: client.GetAll(interface)
3280
for interface in
3281
client._get_all_interface_names()})
3282
for client in tcp_server.clients.values()})
3283
3322
{client.dbus_object_path:
3323
dbus.Dictionary(
3324
{interface: client.GetAll(interface)
3325
for interface in
3326
client._get_all_interface_names()})
3327
for client in tcp_server.clients.values()})
3328
3284
3329
def client_added_signal(self, client):
3285
3330
"""Send the new standard signal and the old signal"""
3286
3331
if use_dbus:
3288
3333
self.InterfacesAdded(
3289
3334
client.dbus_object_path,
3290
3335
dbus.Dictionary(
3291
{ interface: client.GetAll(interface)
3292
for interface in
3293
client._get_all_interface_names()}))
3336
{interface: client.GetAll(interface)
3337
for interface in
3338
client._get_all_interface_names()}))
3294
3339
# Old signal
3295
3340
self.ClientAdded(client.dbus_object_path)
3296
3341
3297
3342
def client_removed_signal(self, client):
3298
3343
"""Send the new standard signal and the old signal"""
3299
3344
if use_dbus:
3304
3349
# Old signal
3305
3350
self.ClientRemoved(client.dbus_object_path,
3306
3351
client.name)
3307
3352
3308
3353
mandos_dbus_service = MandosDBusService()
3309
3354
3355
# Save modules to variables to exempt the modules from being
3356
# unloaded before the function registered with atexit() is run.
3357
mp = multiprocessing
3358
wn = wnull
3359
3310
3360
def cleanup():
3311
3361
"Cleanup function; run on exit"
3312
3362
if zeroconf:
3313
3363
service.cleanup()
3314
3315
multiprocessing.active_children()
3316
wnull.close()
3364
3365
mp.active_children()
3366
wn.close()
3317
3367
if not (tcp_server.clients or client_settings):
3318
3368
return
3319
3369
3320
3370
# Store client before exiting. Secrets are encrypted with key
3321
3371
# based on what config file has. If config file is
3322
3372
# removed/edited, old secret will thus be unrecovable.
3327
3377
client.encrypted_secret = pgp.encrypt(client.secret,
3328
3378
key)
3329
3379
client_dict = {}
3330
3380
3331
3381
# A list of attributes that can not be pickled
3332
3382
# + secret.
3333
exclude = { "bus", "changedstate", "secret",
3334
"checker", "server_settings" }
3383
exclude = {"bus", "changedstate", "secret",
3384
"checker", "server_settings"}
3335
3385
for name, typ in inspect.getmembers(dbus.service
3336
3386
.Object):
3337
3387
exclude.add(name)
3338
3388
3339
3389
client_dict["encrypted_secret"] = (client
3340
3390
.encrypted_secret)
3341
3391
for attr in client.client_structure:
3342
3392
if attr not in exclude:
3343
3393
client_dict[attr] = getattr(client, attr)
3344
3394
3345
3395
clients[client.name] = client_dict
3346
3396
del client_settings[client.name]["secret"]
3347
3397
3348
3398
try:
3349
3399
with tempfile.NamedTemporaryFile(
3350
3400
mode='wb',
3353
3403
dir=os.path.dirname(stored_state_path),
3354
3404
delete=False) as stored_state:
3355
3405
pickle.dump((clients, client_settings), stored_state,
3356
protocol = 2)
3406
protocol=2)
3357
3407
tempname = stored_state.name
3358
3408
os.rename(tempname, stored_state_path)
3359
3409
except (IOError, OSError) as e:
3369
3419
logger.warning("Could not save persistent state:",
3370
3420
exc_info=e)
3371
3421
raise
3372
3422
3373
3423
# Delete all clients, and settings from config
3374
3424
while tcp_server.clients:
3375
3425
name, client = tcp_server.clients.popitem()
3381
3431
if use_dbus:
3382
3432
mandos_dbus_service.client_removed_signal(client)
3383
3433
client_settings.clear()
3384
3434
3385
3435
atexit.register(cleanup)
3386
3436
3387
3437
for client in tcp_server.clients.values():
3388
3438
if use_dbus:
3389
3439
# Emit D-Bus signal for adding
3391
3441
# Need to initiate checking of clients
3392
3442
if client.enabled:
3393
3443
client.init_checker()
3394
3444
3395
3445
tcp_server.enable()
3396
3446
tcp_server.server_activate()
3397
3447
3398
3448
# Find out what port we got
3399
3449
if zeroconf:
3400
3450
service.port = tcp_server.socket.getsockname()[1]
3405
3455
else: # IPv4
3406
3456
logger.info("Now listening on address %r, port %d",
3407
3457
*tcp_server.socket.getsockname())
3408
3409
#service.interface = tcp_server.socket.getsockname()[3]
3410
3458
3459
# service.interface = tcp_server.socket.getsockname()[3]
3460
3411
3461
try:
3412
3462
if zeroconf:
3413
3463
# From the Avahi example code
3418
3468
cleanup()
3419
3469
sys.exit(1)
3420
3470
# End of Avahi example code
3421
3471
3422
3472
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3423
3473
lambda *args, **kwargs:
3424
3474
(tcp_server.handle_request
3425
3475
(*args[2:], **kwargs) or True))
3426
3476
3427
3477
logger.debug("Starting main loop")
3428
3478
main_loop.run()
3429
3479
except AvahiError as error:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0