/mandos/release : revision 237.7.127

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#!/usr/bin/python2.7

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#!/usr/bin/python

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# -*- mode: python; coding: utf-8 -*-

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#

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# Mandos server - give out binary blobs to connecting clients.

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# "AvahiService" class, and some lines in "main".

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#

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# Everything else is

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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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import binascii

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import tempfile

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import itertools

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import collections

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import dbus

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import dbus.service

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import ctypes.util

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import xml.dom.minidom

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import inspect

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import GnuPGInterface

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try:

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except ImportError:

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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 = "1.6.8"

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version = "1.5.3"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = str("/dev/log")))

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try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h

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with contextlib.closing(socket.socket()) as s:

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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struct.pack(b"16s16x", interface))

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interface_index = struct.unpack("I", ifreq[16:20])[0]

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struct.pack(str("16s16x"),

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interface))

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interface_index = struct.unpack(str("I"),

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ifreq[16:20])[0]

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return interface_index

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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 =

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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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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.gnupg = GnuPGInterface.GnuPG()

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self.tempdir = tempfile.mkdtemp(prefix="mandos-")

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self.gnupgargs = ['--batch',

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'--home', self.tempdir,

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'--force-mdc',

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'--quiet',

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'--no-use-agent']

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self.gnupg = GnuPGInterface.GnuPG()

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self.gnupg.options.meta_interactive = False

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self.gnupg.options.homedir = self.tempdir

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self.gnupg.options.extra_args.extend(['--force-mdc',

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'--quiet',

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'--no-use-agent'])

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def __enter__(self):

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return self

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def __exit__(self, exc_type, exc_value, traceback):

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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 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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encoded = b"mandos" + binascii.hexlify(password)

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if len(encoded) > 2048:

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# GnuPG can't handle long passwords, so encode differently

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encoded = (b"mandos" + password.replace(b"\\", b"\\\\")

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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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return b"mandos" + binascii.hexlify(password)

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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(dir=self.tempdir

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) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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proc = subprocess.Popen(['gpg', '--symmetric',

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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)

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if proc.returncode != 0:

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raise PGPError(err)

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self.gnupg.passphrase = self.password_encode(password)

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with open(os.devnull, "w") as devnull:

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try:

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proc = self.gnupg.run(['--symmetric'],

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create_fhs=['stdin', 'stdout'],

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attach_fhs={'stderr': devnull})

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with contextlib.closing(proc.handles['stdin']) as f:

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f.write(data)

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with contextlib.closing(proc.handles['stdout']) as f:

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ciphertext = f.read()

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proc.wait()

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except IOError as e:

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raise PGPError(e)

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self.gnupg.passphrase = None

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return ciphertext

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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(dir = self.tempdir

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) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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proc = subprocess.Popen(['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,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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decrypted_plaintext, err = proc.communicate(input

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= data)

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if proc.returncode != 0:

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raise PGPError(err)

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self.gnupg.passphrase = self.password_encode(password)

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with open(os.devnull, "w") as devnull:

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try:

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proc = self.gnupg.run(['--decrypt'],

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create_fhs=['stdin', 'stdout'],

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attach_fhs={'stderr': devnull})

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with contextlib.closing(proc.handles['stdin']) as f:

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f.write(data)

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with contextlib.closing(proc.handles['stdout']) as f:

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decrypted_plaintext = f.read()

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proc.wait()

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except IOError as e:

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raise PGPError(e)

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self.gnupg.passphrase = None

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return decrypted_plaintext

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class AvahiError(Exception):

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def __init__(self, value, *args, **kwargs):

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self.value = value

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return super(AvahiError, self).__init__(value, *args,

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**kwargs)

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super(AvahiError, self).__init__(value, *args, **kwargs)

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def __unicode__(self):

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return unicode(repr(self.value))

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class AvahiServiceError(AvahiError):

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pass

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Used to optionally bind to the specified interface.

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name: string; Example: 'Mandos'

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type: string; Example: '_mandos._tcp'.

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See <https://www.iana.org/assignments/service-names-port-numbers>

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See <http://www.dns-sd.org/ServiceTypes.html>

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port: integer; what port to announce

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TXT: list of strings; TXT record for the service

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domain: string; Domain to publish on, default to .local if empty.

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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self.name = str(self.server

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.GetAlternativeServiceName(self.name))

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self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

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logger.info("Changing Zeroconf service name to %r ...",

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self.name)

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self.remove()

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self.rename()

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elif state == avahi.ENTRY_GROUP_FAILURE:

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logger.critical("Avahi: Error in group state changed %s",

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str(error))

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raise AvahiGroupError("State changed: {!s}"

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unicode(error))

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raise AvahiGroupError("State changed: {0!s}"

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.format(error))

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def cleanup(self):

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self.server_state_changed)

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self.server_state_changed(self.server.GetState())

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class AvahiServiceToSyslog(AvahiService):

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def rename(self):

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"""Add the new name to the syslog messages"""

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ret = AvahiService.rename(self)

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syslogger.setFormatter(logging.Formatter

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('Mandos ({}) [%(process)d]:'

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('Mandos ({0}) [%(process)d]:'

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' %(levelname)s: %(message)s'

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.format(self.name)))

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return ret

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def timedelta_to_milliseconds(td):

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"Convert a datetime.timedelta() to milliseconds"

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return ((td.days * 24 * 60 * 60 * 1000)

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+ (td.seconds * 1000)

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+ (td.microseconds // 1000))

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404

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class Client(object):

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"""A representation of a client host served by this server.

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runtime_expansions: Allowed attributes for runtime expansion.

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expires: datetime.datetime(); time (UTC) when a client will be

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disabled, or None

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server_settings: The server_settings dict from main()

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"""

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runtime_expansions = ("approval_delay", "approval_duration",

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"created", "enabled", "expires",

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"fingerprint", "host", "interval",

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"last_approval_request", "last_checked_ok",

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"created", "enabled", "fingerprint",

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"host", "interval", "last_checked_ok",

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"last_enabled", "name", "timeout")

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client_defaults = { "timeout": "PT5M",

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"extended_timeout": "PT15M",

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"interval": "PT2M",

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client_defaults = { "timeout": "5m",

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"extended_timeout": "15m",

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"interval": "2m",

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"checker": "fping -q -- %%(host)s",

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"host": "",

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"approval_delay": "PT0S",

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"approval_duration": "PT1S",

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"approval_delay": "0s",

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"approval_duration": "1s",

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"approved_by_default": "True",

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"enabled": "True",

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}

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def timeout_milliseconds(self):

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"Return the 'timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.timeout)

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def extended_timeout_milliseconds(self):

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"Return the 'extended_timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.extended_timeout)

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def interval_milliseconds(self):

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"Return the 'interval' attribute in milliseconds"

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return timedelta_to_milliseconds(self.interval)

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def approval_delay_milliseconds(self):

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return timedelta_to_milliseconds(self.approval_delay)

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@staticmethod

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def config_parser(config):

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"""Construct a new dict of client settings of this form:

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"rb") as secfile:

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client["secret"] = secfile.read()

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else:

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raise TypeError("No secret or secfile for section {}"

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raise TypeError("No secret or secfile for section {0}"

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.format(section))

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client["timeout"] = string_to_delta(section["timeout"])

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client["extended_timeout"] = string_to_delta(

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return settings

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def __init__(self, settings, name = None, server_settings=None):

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def __init__(self, settings, name = None):

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self.name = name

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if server_settings is None:

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server_settings = {}

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self.server_settings = server_settings

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# adding all client settings

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for setting, value in settings.items():

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for setting, value in settings.iteritems():

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setattr(self, setting, value)

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if self.enabled:

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if getattr(self, "enabled", False):

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# Already enabled

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return

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self.send_changedstate()

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self.expires = datetime.datetime.utcnow() + self.timeout

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self.enabled = True

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self.last_enabled = datetime.datetime.utcnow()

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self.init_checker()

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self.send_changedstate()

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def disable(self, quiet=True):

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"""Disable this client."""

579

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if not getattr(self, "enabled", False):

580

584

return False

581

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if not quiet:

586

self.send_changedstate()

587

if not quiet:

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logger.info("Disabling client %s", self.name)

583

if getattr(self, "disable_initiator_tag", None) is not None:

589

if getattr(self, "disable_initiator_tag", False):

584

590

gobject.source_remove(self.disable_initiator_tag)

585

591

self.disable_initiator_tag = None

586

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self.expires = None

587

if getattr(self, "checker_initiator_tag", None) is not None:

593

if getattr(self, "checker_initiator_tag", False):

588

594

gobject.source_remove(self.checker_initiator_tag)

589

595

self.checker_initiator_tag = None

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596

self.stop_checker()

591

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self.enabled = False

592

if not quiet:

593

self.send_changedstate()

594

598

# Do not run this again if called by a gobject.timeout_add

595

599

return False

596

600

604

def init_checker(self):

601

605

# Schedule a new checker to be started an 'interval' from now,

602

606

# and every interval from then on.

603

if self.checker_initiator_tag is not None:

604

gobject.source_remove(self.checker_initiator_tag)

605

607

self.checker_initiator_tag = (gobject.timeout_add

606

(int(self.interval

607

.total_seconds() * 1000),

608

(self.interval_milliseconds(),

608

609

self.start_checker))

609

610

# Schedule a disable() when 'timeout' has passed

610

if self.disable_initiator_tag is not None:

611

gobject.source_remove(self.disable_initiator_tag)

612

611

self.disable_initiator_tag = (gobject.timeout_add

613

(int(self.timeout

614

.total_seconds() * 1000),

615

self.disable))

612

(self.timeout_milliseconds(),

613

self.disable))

616

614

# Also start a new checker *right now*.

617

615

self.start_checker()

618

616

646

644

timeout = self.timeout

647

645

if self.disable_initiator_tag is not None:

648

646

gobject.source_remove(self.disable_initiator_tag)

649

self.disable_initiator_tag = None

650

647

if getattr(self, "enabled", False):

651

648

self.disable_initiator_tag = (gobject.timeout_add

652

(int(timeout.total_seconds()

653

* 1000), self.disable))

649

(timedelta_to_milliseconds

650

(timeout), self.disable))

654

651

self.expires = datetime.datetime.utcnow() + timeout

655

652

656

653

def need_approval(self):

673

670

# If a checker exists, make sure it is not a zombie

674

671

try:

675

672

pid, status = os.waitpid(self.checker.pid, os.WNOHANG)

676

except AttributeError:

677

pass

678

except OSError as error:

679

if error.errno != errno.ECHILD:

680

raise

673

except (AttributeError, OSError) as error:

674

if (isinstance(error, OSError)

675

and error.errno != errno.ECHILD):

676

raise error

681

677

else:

682

678

if pid:

683

679

logger.warning("Checker was a zombie")

686

682

self.current_checker_command)

687

683

# Start a new checker if needed

688

684

if self.checker is None:

689

# Escape attributes for the shell

690

escaped_attrs = { attr:

691

re.escape(str(getattr(self, attr)))

692

for attr in self.runtime_expansions }

693

685

try:

694

command = self.checker_command % escaped_attrs

695

except TypeError as error:

696

logger.error('Could not format string "%s"',

697

self.checker_command, exc_info=error)

698

return True # Try again later

686

# In case checker_command has exactly one % operator

687

command = self.checker_command % self.host

688

except TypeError:

689

# Escape attributes for the shell

690

escaped_attrs = dict(

691

(attr,

692

re.escape(unicode(str(getattr(self, attr, "")),

693

errors=

694

'replace')))

695

for attr in

696

self.runtime_expansions)

697

698

try:

699

command = self.checker_command % escaped_attrs

700

except TypeError as error:

701

logger.error('Could not format string "%s"',

702

self.checker_command, exc_info=error)

703

return True # Try again later

699

704

self.current_checker_command = command

700

705

try:

701

706

logger.info("Starting checker %r for %s",

704

709

# in normal mode, that is already done by daemon(),

705

710

# and in debug mode we don't want to. (Stdin is

706

711

# always replaced by /dev/null.)

707

# The exception is when not debugging but nevertheless

708

# running in the foreground; use the previously

709

# created wnull.

710

popen_args = {}

711

if (not self.server_settings["debug"]

712

and self.server_settings["foreground"]):

713

popen_args.update({"stdout": wnull,

714

"stderr": wnull })

715

712

self.checker = subprocess.Popen(command,

716

713

close_fds=True,

717

shell=True, cwd="/",

718

**popen_args)

714

shell=True, cwd="/")

715

self.checker_callback_tag = (gobject.child_watch_add

716

(self.checker.pid,

717

self.checker_callback,

718

data=command))

719

# The checker may have completed before the gobject

720

# watch was added. Check for this.

721

pid, status = os.waitpid(self.checker.pid, os.WNOHANG)

722

if pid:

723

gobject.source_remove(self.checker_callback_tag)

724

self.checker_callback(pid, status, command)

719

725

except OSError as error:

720

726

logger.error("Failed to start subprocess",

721

727

exc_info=error)

722

return True

723

self.checker_callback_tag = (gobject.child_watch_add

724

(self.checker.pid,

725

self.checker_callback,

726

data=command))

727

# The checker may have completed before the gobject

728

# watch was added. Check for this.

729

try:

730

pid, status = os.waitpid(self.checker.pid, os.WNOHANG)

731

except OSError as error:

732

if error.errno == errno.ECHILD:

733

# This should never happen

734

logger.error("Child process vanished",

735

exc_info=error)

736

return True

737

raise

738

if pid:

739

gobject.source_remove(self.checker_callback_tag)

740

self.checker_callback(pid, status, command)

741

728

# Re-run this periodically if run by gobject.timeout_add

742

729

return True

743

730

776

763

# "Set" method, so we fail early here:

777

764

if byte_arrays and signature != "ay":

778

765

raise ValueError("Byte arrays not supported for non-'ay'"

779

" signature {!r}".format(signature))

766

" signature {0!r}".format(signature))

780

767

def decorator(func):

781

768

func._dbus_is_property = True

782

769

func._dbus_interface = dbus_interface

830

817

class DBusPropertyException(dbus.exceptions.DBusException):

831

818

"""A base class for D-Bus property-related exceptions

832

819

"""

833

pass

820

def __unicode__(self):

821

return unicode(str(self))

822

834

823

835

824

class DBusPropertyAccessException(DBusPropertyException):

836

825

"""A property's access permissions disallows an operation.

859

848

If called like _is_dbus_thing("method") it returns a function

860

849

suitable for use as predicate to inspect.getmembers().

861

850

"""

862

return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),

851

return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),

863

852

False)

864

853

865

854

def _get_all_dbus_things(self, thing):

914

903

# The byte_arrays option is not supported yet on

915

904

# signatures other than "ay".

916

905

if prop._dbus_signature != "ay":

917

raise ValueError("Byte arrays not supported for non-"

918

"'ay' signature {!r}"

919

.format(prop._dbus_signature))

906

raise ValueError

920

907

value = dbus.ByteArray(b''.join(chr(byte)

921

908

for byte in value))

922

909

prop(value)

986

973

(prop,

987

974

"_dbus_annotations",

988

975

{}))

989

for name, value in annots.items():

976

for name, value in annots.iteritems():

990

977

ann_tag = document.createElement(

991

978

"annotation")

992

979

ann_tag.setAttribute("name", name)

995

982

# Add interface annotation tags

996

983

for annotation, value in dict(

997

984

itertools.chain.from_iterable(

998

annotations().items()

985

annotations().iteritems()

999

986

for name, annotations in

1000

987

self._get_all_dbus_things("interface")

1001

988

if name == if_tag.getAttribute("name")

1002

)).items():

989

)).iteritems():

1003

990

ann_tag = document.createElement("annotation")

1004

991

ann_tag.setAttribute("name", annotation)

1005

992

ann_tag.setAttribute("value", value)

1028

1015

return xmlstring

1029

1016

1030

1017

1031

def datetime_to_dbus(dt, variant_level=0):

1018

def datetime_to_dbus (dt, variant_level=0):

1032

1019

"""Convert a UTC datetime.datetime() to a D-Bus type."""

1033

1020

if dt is None:

1034

1021

return dbus.String("", variant_level = variant_level)

1042

1029

interface names according to the "alt_interface_names" mapping.

1043

1030

Usage:

1044

1031

1045

@alternate_dbus_interfaces({"org.example.Interface":

1046

"net.example.AlternateInterface"})

1032

@alternate_dbus_names({"org.example.Interface":

1033

"net.example.AlternateInterface"})

1047

1034

class SampleDBusObject(dbus.service.Object):

1048

1035

@dbus.service.method("org.example.Interface")

1049

1036

def SampleDBusMethod():

1061

1048

"""

1062

1049

def wrapper(cls):

1063

1050

for orig_interface_name, alt_interface_name in (

1064

alt_interface_names.items()):

1051

alt_interface_names.iteritems()):

1065

1052

attr = {}

1066

1053

interface_names = set()

1067

1054

# Go though all attributes of the class

1080

1067

interface_names.add(alt_interface)

1081

1068

# Is this a D-Bus signal?

1082

1069

if getattr(attribute, "_dbus_is_signal", False):

1083

# Extract the original non-method undecorated

1084

# function by black magic

1070

# Extract the original non-method function by

1071

# black magic

1085

1072

nonmethod_func = (dict(

1086

1073

zip(attribute.func_code.co_freevars,

1087

1074

attribute.__closure__))["func"]

1184

1171

attribute.func_closure)))

1185

1172

if deprecate:

1186

1173

# Deprecate all alternate interfaces

1187

iname="_AlternateDBusNames_interface_annotation{}"

1174

iname="_AlternateDBusNames_interface_annotation{0}"

1188

1175

for interface_name in interface_names:

1189

1176

@dbus_interface_annotations(interface_name)

1190

1177

def func(self):

1199

1186

if interface_names:

1200

1187

# Replace the class with a new subclass of it with

1201

1188

# methods, signals, etc. as created above.

1202

cls = type(b"{}Alternate".format(cls.__name__),

1189

cls = type(b"{0}Alternate".format(cls.__name__),

1203

1190

(cls,), attr)

1204

1191

return cls

1205

1192

return wrapper

1225

1212

Client.__init__(self, *args, **kwargs)

1226

1213

# Only now, when this client is initialized, can it show up on

1227

1214

# the D-Bus

1228

client_object_name = str(self.name).translate(

1215

client_object_name = unicode(self.name).translate(

1229

1216

{ord("."): ord("_"),

1230

1217

ord("-"): ord("_")})

1231

1218

self.dbus_object_path = (dbus.ObjectPath

1246

1233

to the D-Bus. Default: no transform

1247

1234

variant_level: D-Bus variant level. Default: 1

1248

1235

"""

1249

attrname = "_{}".format(dbus_name)

1236

attrname = "_{0}".format(dbus_name)

1250

1237

def setter(self, value):

1251

1238

if hasattr(self, "dbus_object_path"):

1252

1239

if (not hasattr(self, attrname) or

1282

1269

approval_delay = notifychangeproperty(dbus.UInt64,

1283

1270

"ApprovalDelay",

1284

1271

type_func =

1285

lambda td: td.total_seconds()

1286

* 1000)

1272

timedelta_to_milliseconds)

1287

1273

approval_duration = notifychangeproperty(

1288

1274

dbus.UInt64, "ApprovalDuration",

1289

type_func = lambda td: td.total_seconds() * 1000)

1275

type_func = timedelta_to_milliseconds)

1290

1276

host = notifychangeproperty(dbus.String, "Host")

1291

1277

timeout = notifychangeproperty(dbus.UInt64, "Timeout",

1292

type_func = lambda td:

1293

td.total_seconds() * 1000)

1278

type_func =

1279

timedelta_to_milliseconds)

1294

1280

extended_timeout = notifychangeproperty(

1295

1281

dbus.UInt64, "ExtendedTimeout",

1296

type_func = lambda td: td.total_seconds() * 1000)

1282

type_func = timedelta_to_milliseconds)

1297

1283

interval = notifychangeproperty(dbus.UInt64,

1298

1284

"Interval",

1299

1285

type_func =

1300

lambda td: td.total_seconds()

1301

* 1000)

1286

timedelta_to_milliseconds)

1302

1287

checker_command = notifychangeproperty(dbus.String, "Checker")

1303

1288

1304

1289

del notifychangeproperty

1332

1317

*args, **kwargs)

1333

1318

1334

1319

def start_checker(self, *args, **kwargs):

1335

old_checker_pid = getattr(self.checker, "pid", None)

1320

old_checker = self.checker

1321

if self.checker is not None:

1322

old_checker_pid = self.checker.pid

1323

else:

1324

old_checker_pid = None

1336

1325

r = Client.start_checker(self, *args, **kwargs)

1337

1326

# Only if new checker process was started

1338

1327

if (self.checker is not None

1346

1335

return False

1347

1336

1348

1337

def approve(self, value=True):

1338

self.send_changedstate()

1349

1339

self.approved = value

1350

gobject.timeout_add(int(self.approval_duration.total_seconds()

1351

* 1000), self._reset_approved)

1352

self.send_changedstate()

1340

gobject.timeout_add(timedelta_to_milliseconds

1341

(self.approval_duration),

1342

self._reset_approved)

1353

1343

1354

1344

## D-Bus methods, signals & properties

1355

1345

_interface = "se.recompile.Mandos.Client"

1457

1447

access="readwrite")

1458

1448

def ApprovalDelay_dbus_property(self, value=None):

1459

1449

if value is None: # get

1460

return dbus.UInt64(self.approval_delay.total_seconds()

1461

* 1000)

1450

return dbus.UInt64(self.approval_delay_milliseconds())

1462

1451

self.approval_delay = datetime.timedelta(0, 0, 0, value)

1463

1452

1464

1453

# ApprovalDuration - property

1466

1455

access="readwrite")

1467

1456

def ApprovalDuration_dbus_property(self, value=None):

1468

1457

if value is None: # get

1469

return dbus.UInt64(self.approval_duration.total_seconds()

1470

* 1000)

1458

return dbus.UInt64(timedelta_to_milliseconds(

1459

self.approval_duration))

1471

1460

self.approval_duration = datetime.timedelta(0, 0, 0, value)

1472

1461

1473

1462

# Name - property

1486

1475

def Host_dbus_property(self, value=None):

1487

1476

if value is None: # get

1488

1477

return dbus.String(self.host)

1489

self.host = str(value)

1478

self.host = unicode(value)

1490

1479

1491

1480

# Created - property

1492

1481

@dbus_service_property(_interface, signature="s", access="read")

1539

1528

access="readwrite")

1540

1529

def Timeout_dbus_property(self, value=None):

1541

1530

if value is None: # get

1542

return dbus.UInt64(self.timeout.total_seconds() * 1000)

1543

old_timeout = self.timeout

1531

return dbus.UInt64(self.timeout_milliseconds())

1544

1532

self.timeout = datetime.timedelta(0, 0, 0, value)

1545

# Reschedule disabling

1533

# Reschedule timeout

1546

1534

if self.enabled:

1547

1535

now = datetime.datetime.utcnow()

1548

self.expires += self.timeout - old_timeout

1549

if self.expires <= now:

1536

time_to_die = timedelta_to_milliseconds(

1537

(self.last_checked_ok + self.timeout) - now)

1538

if time_to_die <= 0:

1550

1539

# The timeout has passed

1551

1540

self.disable()

1552

1541

else:

1542

self.expires = (now +

1543

datetime.timedelta(milliseconds =

1544

time_to_die))

1553

1545

if (getattr(self, "disable_initiator_tag", None)

1554

1546

is None):

1555

1547

return

1556

1548

gobject.source_remove(self.disable_initiator_tag)

1557

self.disable_initiator_tag = (

1558

gobject.timeout_add(

1559

int((self.expires - now).total_seconds()

1560

* 1000), self.disable))

1549

self.disable_initiator_tag = (gobject.timeout_add

1550

(time_to_die,

1551

self.disable))

1561

1552

1562

1553

# ExtendedTimeout - property

1563

1554

@dbus_service_property(_interface, signature="t",

1564

1555

access="readwrite")

1565

1556

def ExtendedTimeout_dbus_property(self, value=None):

1566

1557

if value is None: # get

1567

return dbus.UInt64(self.extended_timeout.total_seconds()

1568

* 1000)

1558

return dbus.UInt64(self.extended_timeout_milliseconds())

1569

1559

self.extended_timeout = datetime.timedelta(0, 0, 0, value)

1570

1560

1571

1561

# Interval - property

1573

1563

access="readwrite")

1574

1564

def Interval_dbus_property(self, value=None):

1575

1565

if value is None: # get

1576

return dbus.UInt64(self.interval.total_seconds() * 1000)

1566

return dbus.UInt64(self.interval_milliseconds())

1577

1567

self.interval = datetime.timedelta(0, 0, 0, value)

1578

1568

if getattr(self, "checker_initiator_tag", None) is None:

1579

1569

return

1590

1580

def Checker_dbus_property(self, value=None):

1591

1581

if value is None: # get

1592

1582

return dbus.String(self.checker_command)

1593

self.checker_command = str(value)

1583

self.checker_command = unicode(value)

1594

1584

1595

1585

# CheckerRunning - property

1596

1586

@dbus_service_property(_interface, signature="b",

1612

1602

@dbus_service_property(_interface, signature="ay",

1613

1603

access="write", byte_arrays=True)

1614

1604

def Secret_dbus_property(self, value):

1615

self.secret = bytes(value)

1605

self.secret = str(value)

1616

1606

1617

1607

del _interface

1618

1608

1652

1642

def handle(self):

1653

1643

with contextlib.closing(self.server.child_pipe) as child_pipe:

1654

1644

logger.info("TCP connection from: %s",

1655

str(self.client_address))

1645

unicode(self.client_address))

1656

1646

logger.debug("Pipe FD: %d",

1657

1647

self.server.child_pipe.fileno())

1658

1648

1684

1674

logger.debug("Protocol version: %r", line)

1685

1675

try:

1686

1676

if int(line.strip().split()[0]) > 1:

1687

raise RuntimeError(line)

1677

raise RuntimeError

1688

1678

except (ValueError, IndexError, RuntimeError) as error:

1689

1679

logger.error("Unknown protocol version: %s", error)

1690

1680

return

1739

1729

if self.server.use_dbus:

1740

1730

# Emit D-Bus signal

1741

1731

client.NeedApproval(

1742

client.approval_delay.total_seconds()

1743

* 1000, client.approved_by_default)

1732

client.approval_delay_milliseconds(),

1733

client.approved_by_default)

1744

1734

else:

1745

1735

logger.warning("Client %s was not approved",

1746

1736

client.name)

1752

1742

#wait until timeout or approved

1753

1743

time = datetime.datetime.now()

1754

1744

client.changedstate.acquire()

1755

client.changedstate.wait(delay.total_seconds())

1745

(client.changedstate.wait

1746

(float(client.timedelta_to_milliseconds(delay)

1747

/ 1000)))

1756

1748

client.changedstate.release()

1757

1749

time2 = datetime.datetime.now()

1758

1750

if (time2 - time) >= delay:

1895

1887

1896

1888

def add_pipe(self, parent_pipe, proc):

1897

1889

"""Dummy function; override as necessary"""

1898

raise NotImplementedError()

1890

raise NotImplementedError

1899

1891

1900

1892

1901

1893

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1908

1900

use_ipv6: Boolean; to use IPv6 or not

1909

1901

"""

1910

1902

def __init__(self, server_address, RequestHandlerClass,

1911

interface=None, use_ipv6=True, socketfd=None):

1912

"""If socketfd is set, use that file descriptor instead of

1913

creating a new one with socket.socket().

1914

"""

1903

interface=None, use_ipv6=True):

1915

1904

self.interface = interface

1916

1905

if use_ipv6:

1917

1906

self.address_family = socket.AF_INET6

1918

if socketfd is not None:

1919

# Save the file descriptor

1920

self.socketfd = socketfd

1921

# Save the original socket.socket() function

1922

self.socket_socket = socket.socket

1923

# To implement --socket, we monkey patch socket.socket.

1924

#

1925

# (When socketserver.TCPServer is a new-style class, we

1926

# could make self.socket into a property instead of monkey

1927

# patching socket.socket.)

1928

#

1929

# Create a one-time-only replacement for socket.socket()

1930

@functools.wraps(socket.socket)

1931

def socket_wrapper(*args, **kwargs):

1932

# Restore original function so subsequent calls are

1933

# not affected.

1934

socket.socket = self.socket_socket

1935

del self.socket_socket

1936

# This time only, return a new socket object from the

1937

# saved file descriptor.

1938

return socket.fromfd(self.socketfd, *args, **kwargs)

1939

# Replace socket.socket() function with wrapper

1940

socket.socket = socket_wrapper

1941

# The socketserver.TCPServer.__init__ will call

1942

# socket.socket(), which might be our replacement,

1943

# socket_wrapper(), if socketfd was set.

1944

1907

socketserver.TCPServer.__init__(self, server_address,

1945

1908

RequestHandlerClass)

1946

1947

1909

def server_bind(self):

1948

1910

"""This overrides the normal server_bind() function

1949

1911

to bind to an interface if one was specified, and also NOT to

1957

1919

try:

1958

1920

self.socket.setsockopt(socket.SOL_SOCKET,

1959

1921

SO_BINDTODEVICE,

1960

(self.interface + "\0")

1961

.encode("utf-8"))

1922

str(self.interface

1923

+ '\0'))

1962

1924

except socket.error as error:

1963

if error.errno == errno.EPERM:

1964

logger.error("No permission to bind to"

1965

" interface %s", self.interface)

1966

elif error.errno == errno.ENOPROTOOPT:

1925

if error[0] == errno.EPERM:

1926

logger.error("No permission to"

1927

" bind to interface %s",

1928

self.interface)

1929

elif error[0] == errno.ENOPROTOOPT:

1967

1930

logger.error("SO_BINDTODEVICE not available;"

1968

1931

" cannot bind to interface %s",

1969

1932

self.interface)

1970

elif error.errno == errno.ENODEV:

1971

logger.error("Interface %s does not exist,"

1972

" cannot bind", self.interface)

1973

1933

else:

1974

1934

raise

1975

1935

# Only bind(2) the socket if we really need to.

1978

1938

if self.address_family == socket.AF_INET6:

1979

1939

any_address = "::" # in6addr_any

1980

1940

else:

1981

any_address = "0.0.0.0" # INADDR_ANY

1941

any_address = socket.INADDR_ANY

1982

1942

self.server_address = (any_address,

1983

1943

self.server_address[1])

1984

1944

elif not self.server_address[1]:

2005

1965

"""

2006

1966

def __init__(self, server_address, RequestHandlerClass,

2007

1967

interface=None, use_ipv6=True, clients=None,

2008

gnutls_priority=None, use_dbus=True, socketfd=None):

1968

gnutls_priority=None, use_dbus=True):

2009

1969

self.enabled = False

2010

1970

self.clients = clients

2011

1971

if self.clients is None:

2015

1975

IPv6_TCPServer.__init__(self, server_address,

2016

1976

RequestHandlerClass,

2017

1977

interface = interface,

2018

use_ipv6 = use_ipv6,

2019

socketfd = socketfd)

1978

use_ipv6 = use_ipv6)

2020

1979

def server_activate(self):

2021

1980

if self.enabled:

2022

1981

return socketserver.TCPServer.server_activate(self)

2100

2059

return True

2101

2060

2102

2061

2103

def rfc3339_duration_to_delta(duration):

2104

"""Parse an RFC 3339 "duration" and return a datetime.timedelta

2105

2106

>>> rfc3339_duration_to_delta("P7D")

2107

datetime.timedelta(7)

2108

>>> rfc3339_duration_to_delta("PT60S")

2109

datetime.timedelta(0, 60)

2110

>>> rfc3339_duration_to_delta("PT60M")

2111

datetime.timedelta(0, 3600)

2112

>>> rfc3339_duration_to_delta("PT24H")

2113

datetime.timedelta(1)

2114

>>> rfc3339_duration_to_delta("P1W")

2115

datetime.timedelta(7)

2116

>>> rfc3339_duration_to_delta("PT5M30S")

2117

datetime.timedelta(0, 330)

2118

>>> rfc3339_duration_to_delta("P1DT3M20S")

2119

datetime.timedelta(1, 200)

2120

"""

2121

2122

# Parsing an RFC 3339 duration with regular expressions is not

2123

# possible - there would have to be multiple places for the same

2124

# values, like seconds. The current code, while more esoteric, is

2125

# cleaner without depending on a parsing library. If Python had a

2126

# built-in library for parsing we would use it, but we'd like to

2127

# avoid excessive use of external libraries.

2128

2129

# New type for defining tokens, syntax, and semantics all-in-one

2130

Token = collections.namedtuple("Token",

2131

("regexp", # To match token; if

2132

# "value" is not None,

2133

# must have a "group"

2134

# containing digits

2135

"value", # datetime.timedelta or

2136

# None

2137

"followers")) # Tokens valid after

2138

# this token

2139

# RFC 3339 "duration" tokens, syntax, and semantics; taken from

2140

# the "duration" ABNF definition in RFC 3339, Appendix A.

2141

token_end = Token(re.compile(r"$"), None, frozenset())

2142

token_second = Token(re.compile(r"(\d+)S"),

2143

datetime.timedelta(seconds=1),

2144

frozenset((token_end,)))

2145

token_minute = Token(re.compile(r"(\d+)M"),

2146

datetime.timedelta(minutes=1),

2147

frozenset((token_second, token_end)))

2148

token_hour = Token(re.compile(r"(\d+)H"),

2149

datetime.timedelta(hours=1),

2150

frozenset((token_minute, token_end)))

2151

token_time = Token(re.compile(r"T"),

2152

None,

2153

frozenset((token_hour, token_minute,

2154

token_second)))

2155

token_day = Token(re.compile(r"(\d+)D"),

2156

datetime.timedelta(days=1),

2157

frozenset((token_time, token_end)))

2158

token_month = Token(re.compile(r"(\d+)M"),

2159

datetime.timedelta(weeks=4),

2160

frozenset((token_day, token_end)))

2161

token_year = Token(re.compile(r"(\d+)Y"),

2162

datetime.timedelta(weeks=52),

2163

frozenset((token_month, token_end)))

2164

token_week = Token(re.compile(r"(\d+)W"),

2165

datetime.timedelta(weeks=1),

2166

frozenset((token_end,)))

2167

token_duration = Token(re.compile(r"P"), None,

2168

frozenset((token_year, token_month,

2169

token_day, token_time,

2170

token_week)))

2171

# Define starting values

2172

value = datetime.timedelta() # Value so far

2173

found_token = None

2174

followers = frozenset((token_duration,)) # Following valid tokens

2175

s = duration # String left to parse

2176

# Loop until end token is found

2177

while found_token is not token_end:

2178

# Search for any currently valid tokens

2179

for token in followers:

2180

match = token.regexp.match(s)

2181

if match is not None:

2182

# Token found

2183

if token.value is not None:

2184

# Value found, parse digits

2185

factor = int(match.group(1), 10)

2186

# Add to value so far

2187

value += factor * token.value

2188

# Strip token from string

2189

s = token.regexp.sub("", s, 1)

2190

# Go to found token

2191

found_token = token

2192

# Set valid next tokens

2193

followers = found_token.followers

2194

break

2195

else:

2196

# No currently valid tokens were found

2197

raise ValueError("Invalid RFC 3339 duration")

2198

# End token found

2199

return value

2200

2201

2202

2062

def string_to_delta(interval):

2203

2063

"""Parse a string and return a datetime.timedelta

2204

2064

2215

2075

>>> string_to_delta('5m 30s')

2216

2076

datetime.timedelta(0, 330)

2217

2077

"""

2218

2219

try:

2220

return rfc3339_duration_to_delta(interval)

2221

except ValueError:

2222

pass

2223

2224

2078

timevalue = datetime.timedelta(0)

2225

2079

for s in interval.split():

2226

2080

try:

2227

suffix = s[-1]

2081

suffix = unicode(s[-1])

2228

2082

value = int(s[:-1])

2229

2083

if suffix == "d":

2230

2084

delta = datetime.timedelta(value)

2237

2091

elif suffix == "w":

2238

2092

delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)

2239

2093

else:

2240

raise ValueError("Unknown suffix {!r}"

2094

raise ValueError("Unknown suffix {0!r}"

2241

2095

.format(suffix))

2242

except IndexError as e:

2096

except (ValueError, IndexError) as e:

2243

2097

raise ValueError(*(e.args))

2244

2098

timevalue += delta

2245

2099

return timevalue

2260

2114

# Close all standard open file descriptors

2261

2115

null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)

2262

2116

if not stat.S_ISCHR(os.fstat(null).st_mode):

2263

raise OSError(errno.ENODEV, "{} not a character device"

2117

raise OSError(errno.ENODEV,

2118

"{0} not a character device"

2264

2119

.format(os.devnull))

2265

2120

os.dup2(null, sys.stdin.fileno())

2266

2121

os.dup2(null, sys.stdout.fileno())

2276

2131

2277

2132

parser = argparse.ArgumentParser()

2278

2133

parser.add_argument("-v", "--version", action="version",

2279

version = "%(prog)s {}".format(version),

2134

version = "%(prog)s {0}".format(version),

2280

2135

help="show version number and exit")

2281

2136

parser.add_argument("-i", "--interface", metavar="IF",

2282

2137

help="Bind to interface IF")

2288

2143

help="Run self-test")

2289

2144

parser.add_argument("--debug", action="store_true",

2290

2145

help="Debug mode; run in foreground and log"

2291

" to terminal", default=None)

2146

" to terminal")

2292

2147

parser.add_argument("--debuglevel", metavar="LEVEL",

2293

2148

help="Debug level for stdout output")

2294

2149

parser.add_argument("--priority", help="GnuTLS"

2301

2156

" files")

2302

2157

parser.add_argument("--no-dbus", action="store_false",

2303

2158

dest="use_dbus", help="Do not provide D-Bus"

2304

" system bus interface", default=None)

2159

" system bus interface")

2305

2160

parser.add_argument("--no-ipv6", action="store_false",

2306

dest="use_ipv6", help="Do not use IPv6",

2307

default=None)

2161

dest="use_ipv6", help="Do not use IPv6")

2308

2162

parser.add_argument("--no-restore", action="store_false",

2309

2163

dest="restore", help="Do not restore stored"

2310

" state", default=None)

2311

parser.add_argument("--socket", type=int,

2312

help="Specify a file descriptor to a network"

2313

" socket to use instead of creating one")

2164

" state")

2314

2165

parser.add_argument("--statedir", metavar="DIR",

2315

2166

help="Directory to save/restore state in")

2316

parser.add_argument("--foreground", action="store_true",

2317

help="Run in foreground", default=None)

2318

parser.add_argument("--no-zeroconf", action="store_false",

2319

dest="zeroconf", help="Do not use Zeroconf",

2320

default=None)

2321

2167

2322

2168

options = parser.parse_args()

2323

2169

2324

2170

if options.check:

2325

2171

import doctest

2326

fail_count, test_count = doctest.testmod()

2327

sys.exit(os.EX_OK if fail_count == 0 else 1)

2172

doctest.testmod()

2173

sys.exit()

2328

2174

2329

2175

# Default values for config file for server-global settings

2330

2176

server_defaults = { "interface": "",

2332

2178

"port": "",

2333

2179

"debug": "False",

2334

2180

"priority":

2335

"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",

2181

"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",

2336

2182

"servicename": "Mandos",

2337

2183

"use_dbus": "True",

2338

2184

"use_ipv6": "True",

2339

2185

"debuglevel": "",

2340

2186

"restore": "True",

2341

"socket": "",

2342

"statedir": "/var/lib/mandos",

2343

"foreground": "False",

2344

"zeroconf": "True",

2187

"statedir": "/var/lib/mandos"

2345

2188

}

2346

2189

2347

2190

# Parse config file for server-global settings

2352

2195

# Convert the SafeConfigParser object to a dict

2353

2196

server_settings = server_config.defaults()

2354

2197

# Use the appropriate methods on the non-string config options

2355

for option in ("debug", "use_dbus", "use_ipv6", "foreground"):

2198

for option in ("debug", "use_dbus", "use_ipv6"):

2356

2199

server_settings[option] = server_config.getboolean("DEFAULT",

2357

2200

option)

2358

2201

if server_settings["port"]:

2359

2202

server_settings["port"] = server_config.getint("DEFAULT",

2360

2203

"port")

2361

if server_settings["socket"]:

2362

server_settings["socket"] = server_config.getint("DEFAULT",

2363

"socket")

2364

# Later, stdin will, and stdout and stderr might, be dup'ed

2365

# over with an opened os.devnull. But we don't want this to

2366

# happen with a supplied network socket.

2367

if 0 <= server_settings["socket"] <= 2:

2368

server_settings["socket"] = os.dup(server_settings

2369

["socket"])

2370

2204

del server_config

2371

2205

2372

2206

# Override the settings from the config file with command line

2374

2208

for option in ("interface", "address", "port", "debug",

2375

2209

"priority", "servicename", "configdir",

2376

2210

"use_dbus", "use_ipv6", "debuglevel", "restore",

2377

"statedir", "socket", "foreground", "zeroconf"):

2211

"statedir"):

2378

2212

value = getattr(options, option)

2379

2213

if value is not None:

2380

2214

server_settings[option] = value

2381

2215

del options

2382

2216

# Force all strings to be unicode

2383

2217

for option in server_settings.keys():

2384

if isinstance(server_settings[option], bytes):

2385

server_settings[option] = (server_settings[option]

2386

.decode("utf-8"))

2387

# Force all boolean options to be boolean

2388

for option in ("debug", "use_dbus", "use_ipv6", "restore",

2389

"foreground", "zeroconf"):

2390

server_settings[option] = bool(server_settings[option])

2391

# Debug implies foreground

2392

if server_settings["debug"]:

2393

server_settings["foreground"] = True

2218

if type(server_settings[option]) is str:

2219

server_settings[option] = unicode(server_settings[option])

2394

2220

# Now we have our good server settings in "server_settings"

2395

2221

2396

2222

##################################################################

2397

2223

2398

if (not server_settings["zeroconf"] and

2399

not (server_settings["port"]

2400

or server_settings["socket"] != "")):

2401

parser.error("Needs port or socket to work without"

2402

" Zeroconf")

2403

2404

2224

# For convenience

2405

2225

debug = server_settings["debug"]

2406

2226

debuglevel = server_settings["debuglevel"]

2408

2228

use_ipv6 = server_settings["use_ipv6"]

2409

2229

stored_state_path = os.path.join(server_settings["statedir"],

2410

2230

stored_state_file)

2411

foreground = server_settings["foreground"]

2412

zeroconf = server_settings["zeroconf"]

2413

2231

2414

2232

if debug:

2415

2233

initlogger(debug, logging.DEBUG)

2422

2240

2423

2241

if server_settings["servicename"] != "Mandos":

2424

2242

syslogger.setFormatter(logging.Formatter

2425

('Mandos ({}) [%(process)d]:'

2243

('Mandos ({0}) [%(process)d]:'

2426

2244

' %(levelname)s: %(message)s'

2427

2245

.format(server_settings

2428

2246

["servicename"])))

2436

2254

global mandos_dbus_service

2437

2255

mandos_dbus_service = None

2438

2256

2439

socketfd = None

2440

if server_settings["socket"] != "":

2441

socketfd = server_settings["socket"]

2442

2257

tcp_server = MandosServer((server_settings["address"],

2443

2258

server_settings["port"]),

2444

2259

ClientHandler,

2447

2262

use_ipv6=use_ipv6,

2448

2263

gnutls_priority=

2449

2264

server_settings["priority"],

2450

use_dbus=use_dbus,

2451

socketfd=socketfd)

2452

if not foreground:

2453

pidfilename = "/run/mandos.pid"

2454

if not os.path.isdir("/run/."):

2455

pidfilename = "/var/run/mandos.pid"

2456

pidfile = None

2265

use_dbus=use_dbus)

2266

if not debug:

2267

pidfilename = "/var/run/mandos.pid"

2457

2268

try:

2458

2269

pidfile = open(pidfilename, "w")

2459

2270

except IOError as e:

2474

2285

os.setgid(gid)

2475

2286

os.setuid(uid)

2476

2287

except OSError as error:

2477

if error.errno != errno.EPERM:

2478

raise

2288

if error[0] != errno.EPERM:

2289

raise error

2479

2290

2480

2291

if debug:

2481

2292

# Enable all possible GnuTLS debugging

2498

2309

os.close(null)

2499

2310

2500

2311

# Need to fork before connecting to D-Bus

2501

if not foreground:

2312

if not debug:

2502

2313

# Close all input and output, do double fork, etc.

2503

2314

daemon()

2504

2315

2505

# multiprocessing will use threads, so before we use gobject we

2506

# need to inform gobject that threads will be used.

2507

2316

gobject.threads_init()

2508

2317

2509

2318

global main_loop

2524

2333

use_dbus = False

2525

2334

server_settings["use_dbus"] = False

2526

2335

tcp_server.use_dbus = False

2527

if zeroconf:

2528

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2529

service = AvahiServiceToSyslog(name =

2530

server_settings["servicename"],

2531

servicetype = "_mandos._tcp",

2532

protocol = protocol, bus = bus)

2533

if server_settings["interface"]:

2534

service.interface = (if_nametoindex

2535

(server_settings["interface"]

2536

.encode("utf-8")))

2336

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2337

service = AvahiServiceToSyslog(name =

2338

server_settings["servicename"],

2339

servicetype = "_mandos._tcp",

2340

protocol = protocol, bus = bus)

2341

if server_settings["interface"]:

2342

service.interface = (if_nametoindex

2343

(str(server_settings["interface"])))

2537

2344

2538

2345

global multiprocessing_manager

2539

2346

multiprocessing_manager = multiprocessing.Manager()

2546

2353

old_client_settings = {}

2547

2354

clients_data = {}

2548

2355

2549

# This is used to redirect stdout and stderr for checker processes

2550

global wnull

2551

wnull = open(os.devnull, "w") # A writable /dev/null

2552

# Only used if server is running in foreground but not in debug

2553

# mode

2554

if debug or not foreground:

2555

wnull.close()

2556

2557

2356

# Get client data and settings from last running state.

2558

2357

if server_settings["restore"]:

2559

2358

try:

2563

2362

os.remove(stored_state_path)

2564

2363

except IOError as e:

2565

2364

if e.errno == errno.ENOENT:

2566

logger.warning("Could not load persistent state: {}"

2365

logger.warning("Could not load persistent state: {0}"

2567

2366

.format(os.strerror(e.errno)))

2568

2367

else:

2569

2368

logger.critical("Could not load persistent state:",

2574

2373

"EOFError:", exc_info=e)

2575

2374

2576

2375

with PGPEngine() as pgp:

2577

for client_name, client in clients_data.items():

2578

# Skip removed clients

2579

if client_name not in client_settings:

2580

continue

2581

2376

for client_name, client in clients_data.iteritems():

2582

2377

# Decide which value to use after restoring saved state.

2583

2378

# We have three different values: Old config file,

2584

2379

# new config file, and saved state.

2605

2400

if datetime.datetime.utcnow() >= client["expires"]:

2606

2401

if not client["last_checked_ok"]:

2607

2402

logger.warning(

2608

"disabling client {} - Client never "

2403

"disabling client {0} - Client never "

2609

2404

"performed a successful checker"

2610

2405

.format(client_name))

2611

2406

client["enabled"] = False

2612

2407

elif client["last_checker_status"] != 0:

2613

2408

logger.warning(

2614

"disabling client {} - Client last"

2615

" checker failed with error code {}"

2409

"disabling client {0} - Client "

2410

"last checker failed with error code {1}"

2616

2411

.format(client_name,

2617

2412

client["last_checker_status"]))

2618

2413

client["enabled"] = False

2621

2416

.utcnow()

2622

2417

+ client["timeout"])

2623

2418

logger.debug("Last checker succeeded,"

2624

" keeping {} enabled"

2419

" keeping {0} enabled"

2625

2420

.format(client_name))

2626

2421

try:

2627

2422

client["secret"] = (

2630

2425

["secret"]))

2631

2426

except PGPError:

2632

2427

# If decryption fails, we use secret from new settings

2633

logger.debug("Failed to decrypt {} old secret"

2428

logger.debug("Failed to decrypt {0} old secret"

2634

2429

.format(client_name))

2635

2430

client["secret"] = (

2636

2431

client_settings[client_name]["secret"])

2644

2439

clients_data[client_name] = client_settings[client_name]

2645

2440

2646

2441

# Create all client objects

2647

for client_name, client in clients_data.items():

2442

for client_name, client in clients_data.iteritems():

2648

2443

tcp_server.clients[client_name] = client_class(

2649

name = client_name, settings = client,

2650

server_settings = server_settings)

2444

name = client_name, settings = client)

2651

2445

2652

2446

if not tcp_server.clients:

2653

2447

logger.warning("No clients defined")

2654

2448

2655

if not foreground:

2656

if pidfile is not None:

2657

try:

2658

with pidfile:

2659

pid = os.getpid()

2660

pidfile.write("{}\n".format(pid).encode("utf-8"))

2661

except IOError:

2662

logger.error("Could not write to file %r with PID %d",

2663

pidfilename, pid)

2664

del pidfile

2449

if not debug:

2450

try:

2451

with pidfile:

2452

pid = os.getpid()

2453

pidfile.write(str(pid) + "\n".encode("utf-8"))

2454

del pidfile

2455

except IOError:

2456

logger.error("Could not write to file %r with PID %d",

2457

pidfilename, pid)

2458

except NameError:

2459

# "pidfile" was never created

2460

pass

2665

2461

del pidfilename

2462

signal.signal(signal.SIGINT, signal.SIG_IGN)

2666

2463

2667

2464

signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())

2668

2465

signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())

2733

2530

2734

2531

def cleanup():

2735

2532

"Cleanup function; run on exit"

2736

if zeroconf:

2737

service.cleanup()

2533

service.cleanup()

2738

2534

2739

2535

multiprocessing.active_children()

2740

wnull.close()

2741

2536

if not (tcp_server.clients or client_settings):

2742

2537

return

2743

2538

2754

2549

2755

2550

# A list of attributes that can not be pickled

2756

2551

# + secret.

2757

exclude = { "bus", "changedstate", "secret",

2758

"checker", "server_settings" }

2552

exclude = set(("bus", "changedstate", "secret",

2553

"checker"))

2759

2554

for name, typ in (inspect.getmembers

2760

2555

(dbus.service.Object)):

2761

2556

exclude.add(name)

2784

2579

except NameError:

2785

2580

pass

2786

2581

if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):

2787

logger.warning("Could not save persistent state: {}"

2582

logger.warning("Could not save persistent state: {0}"

2788

2583

.format(os.strerror(e.errno)))

2789

2584

else:

2790

2585

logger.warning("Could not save persistent state:",

2791

2586

exc_info=e)

2792

raise

2587

raise e

2793

2588

2794

2589

# Delete all clients, and settings from config

2795

2590

while tcp_server.clients:

2819

2614

tcp_server.server_activate()

2820

2615

2821

2616

# Find out what port we got

2822

if zeroconf:

2823

service.port = tcp_server.socket.getsockname()[1]

2617

service.port = tcp_server.socket.getsockname()[1]

2824

2618

if use_ipv6:

2825

2619

logger.info("Now listening on address %r, port %d,"

2826

2620

" flowinfo %d, scope_id %d",

2832

2626

#service.interface = tcp_server.socket.getsockname()[3]

2833

2627

2834

2628

try:

2835

if zeroconf:

2836

# From the Avahi example code

2837

try:

2838

service.activate()

2839

except dbus.exceptions.DBusException as error:

2840

logger.critical("D-Bus Exception", exc_info=error)

2841

cleanup()

2842

sys.exit(1)

2843

# End of Avahi example code

2629

# From the Avahi example code

2630

try:

2631

service.activate()

2632

except dbus.exceptions.DBusException as error:

2633

logger.critical("D-Bus Exception", exc_info=error)

2634

cleanup()

2635

sys.exit(1)

2636

# End of Avahi example code

2844

2637

2845

2638

gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,

2846

2639

lambda *args, **kwargs: