/mandos/release : revision 237.7.314

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#!/usr/bin/python

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#!/usr/bin/python2.7

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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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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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try:

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from future_builtins import *

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except ImportError:

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pass

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from future_builtins import *

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try:

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import SocketServer as socketserver

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import argparse

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import datetime

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import errno

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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try:

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import ConfigParser as configparser

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except ImportError:

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import dbus

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import dbus.service

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from gi.repository import GLib

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try:

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import gobject

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except ImportError:

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from gi.repository import GObject as gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.6"

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version = "1.6.9"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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return interface_index

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def copy_function(func):

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"""Make a copy of a function"""

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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def initlogger(debug, level=logging.WARNING):

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"""init logger and add loglevel"""

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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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try:

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output = subprocess.check_output(["gpgconf"])

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for line in output.splitlines():

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name, text, path = line.split(b":")

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if name == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--homedir', self.tempdir,

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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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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, '--symmetric',

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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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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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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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raise PGPError(err)

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return decrypted_plaintext

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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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It is instantiated once, and simulates having an Avahi module."""

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IF_UNSPEC = -1 # avahi-common/address.h

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PROTO_UNSPEC = -1 # avahi-common/address.h

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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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"))

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for s in t), signature="ay")

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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

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SERVER_FAILURE = 4 # avahi-common/defs.h

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avahi = Avahi()

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class AvahiError(Exception):

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

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logger.error(bad_states[state] + ": %r", error)

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self.cleanup()

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elif state == avahi.SERVER_RUNNING:

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

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if (error.get_dbus_name()

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== "org.freedesktop.Avahi.CollisionError"):

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logger.info("Local Zeroconf service name"

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" collision.")

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return self.rename(remove=False)

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else:

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

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self.cleanup()

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os._exit(1)

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self.add()

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else:

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if error is None:

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logger.debug("Unknown state: %r", state)

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.format(self.name)))

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return ret

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# Pretend that we have a GnuTLS module

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class GnuTLS(object):

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"""This isn't so much a class as it is a module-like namespace.

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It is instantiated once, and simulates having a GnuTLS module."""

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_library = ctypes.cdll.LoadLibrary(

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ctypes.util.find_library("gnutls"))

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_need_version = b"3.3.0"

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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.

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if GnuTLS.check_version(self._need_version) is None:

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raise GnuTLS.Error("Needs GnuTLS {} or later"

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.format(self._need_version))

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# Unless otherwise indicated, the constants and types below are

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# all from the gnutls/gnutls.h C header file.

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# Constants

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E_SUCCESS = 0

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E_INTERRUPTED = -52

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E_AGAIN = -28

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CRT_OPENPGP = 2

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CLIENT = 2

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SHUT_RDWR = 0

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CRD_CERTIFICATE = 1

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E_NO_CERTIFICATE_FOUND = -49

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OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

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# Types

513

class session_int(ctypes.Structure):

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_fields_ = []

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session_t = ctypes.POINTER(session_int)

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class certificate_credentials_st(ctypes.Structure):

517

_fields_ = []

518

certificate_credentials_t = ctypes.POINTER(

519

certificate_credentials_st)

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certificate_type_t = ctypes.c_int

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class datum_t(ctypes.Structure):

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_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),

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('size', ctypes.c_uint)]

524

class openpgp_crt_int(ctypes.Structure):

525

_fields_ = []

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openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

527

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

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log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)

529

credentials_type_t = ctypes.c_int

530

transport_ptr_t = ctypes.c_void_p

531

close_request_t = ctypes.c_int

532

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# Exceptions

534

class Error(Exception):

535

# We need to use the class name "GnuTLS" here, since this

536

# exception might be raised from within GnuTLS.__init__,

537

# which is called before the assignment to the "gnutls"

538

# global variable has happened.

539

def __init__(self, message = None, code = None, args=()):

540

# Default usage is by a message string, but if a return

541

# code is passed, convert it to a string with

542

# gnutls.strerror()

543

self.code = code

544

if message is None and code is not None:

545

message = GnuTLS.strerror(code)

546

return super(GnuTLS.Error, self).__init__(

547

message, *args)

548

549

class CertificateSecurityError(Error):

550

pass

551

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# Classes

553

class Credentials(object):

554

def __init__(self):

555

self._c_object = gnutls.certificate_credentials_t()

556

gnutls.certificate_allocate_credentials(

557

ctypes.byref(self._c_object))

558

self.type = gnutls.CRD_CERTIFICATE

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def __del__(self):

561

gnutls.certificate_free_credentials(self._c_object)

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563

class ClientSession(object):

564

def __init__(self, socket, credentials = None):

565

self._c_object = gnutls.session_t()

566

gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)

567

gnutls.set_default_priority(self._c_object)

568

gnutls.transport_set_ptr(self._c_object, socket.fileno())

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gnutls.handshake_set_private_extensions(self._c_object,

570

True)

571

self.socket = socket

572

if credentials is None:

573

credentials = gnutls.Credentials()

574

gnutls.credentials_set(self._c_object, credentials.type,

575

ctypes.cast(credentials._c_object,

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ctypes.c_void_p))

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self.credentials = credentials

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def __del__(self):

580

gnutls.deinit(self._c_object)

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582

def handshake(self):

583

return gnutls.handshake(self._c_object)

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585

def send(self, data):

586

data = bytes(data)

587

data_len = len(data)

588

while data_len > 0:

589

data_len -= gnutls.record_send(self._c_object,

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data[-data_len:],

591

data_len)

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593

def bye(self):

594

return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)

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596

# Error handling functions

597

def _error_code(result):

598

"""A function to raise exceptions on errors, suitable

599

for the 'restype' attribute on ctypes functions"""

600

if result >= 0:

601

return result

602

if result == gnutls.E_NO_CERTIFICATE_FOUND:

603

raise gnutls.CertificateSecurityError(code = result)

604

raise gnutls.Error(code = result)

605

606

def _retry_on_error(result, func, arguments):

607

"""A function to retry on some errors, suitable

608

for the 'errcheck' attribute on ctypes functions"""

609

while result < 0:

610

if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):

611

return _error_code(result)

612

result = func(*arguments)

613

return result

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# Unless otherwise indicated, the function declarations below are

616

# all from the gnutls/gnutls.h C header file.

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618

# Functions

619

priority_set_direct = _library.gnutls_priority_set_direct

620

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

621

ctypes.POINTER(ctypes.c_char_p)]

622

priority_set_direct.restype = _error_code

623

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init = _library.gnutls_init

625

init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]

626

init.restype = _error_code

627

628

set_default_priority = _library.gnutls_set_default_priority

629

set_default_priority.argtypes = [session_t]

630

set_default_priority.restype = _error_code

631

632

record_send = _library.gnutls_record_send

633

record_send.argtypes = [session_t, ctypes.c_void_p,

634

ctypes.c_size_t]

635

record_send.restype = ctypes.c_ssize_t

636

record_send.errcheck = _retry_on_error

637

638

certificate_allocate_credentials = (

639

_library.gnutls_certificate_allocate_credentials)

640

certificate_allocate_credentials.argtypes = [

641

ctypes.POINTER(certificate_credentials_t)]

642

certificate_allocate_credentials.restype = _error_code

643

644

certificate_free_credentials = (

645

_library.gnutls_certificate_free_credentials)

646

certificate_free_credentials.argtypes = [certificate_credentials_t]

647

certificate_free_credentials.restype = None

648

649

handshake_set_private_extensions = (

650

_library.gnutls_handshake_set_private_extensions)

651

handshake_set_private_extensions.argtypes = [session_t,

652

ctypes.c_int]

653

handshake_set_private_extensions.restype = None

654

655

credentials_set = _library.gnutls_credentials_set

656

credentials_set.argtypes = [session_t, credentials_type_t,

657

ctypes.c_void_p]

658

credentials_set.restype = _error_code

659

660

strerror = _library.gnutls_strerror

661

strerror.argtypes = [ctypes.c_int]

662

strerror.restype = ctypes.c_char_p

663

664

certificate_type_get = _library.gnutls_certificate_type_get

665

certificate_type_get.argtypes = [session_t]

666

certificate_type_get.restype = _error_code

667

668

certificate_get_peers = _library.gnutls_certificate_get_peers

669

certificate_get_peers.argtypes = [session_t,

670

ctypes.POINTER(ctypes.c_uint)]

671

certificate_get_peers.restype = ctypes.POINTER(datum_t)

672

673

global_set_log_level = _library.gnutls_global_set_log_level

674

global_set_log_level.argtypes = [ctypes.c_int]

675

global_set_log_level.restype = None

676

677

global_set_log_function = _library.gnutls_global_set_log_function

678

global_set_log_function.argtypes = [log_func]

679

global_set_log_function.restype = None

680

681

deinit = _library.gnutls_deinit

682

deinit.argtypes = [session_t]

683

deinit.restype = None

684

685

handshake = _library.gnutls_handshake

686

handshake.argtypes = [session_t]

687

handshake.restype = _error_code

688

handshake.errcheck = _retry_on_error

689

690

transport_set_ptr = _library.gnutls_transport_set_ptr

691

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

692

transport_set_ptr.restype = None

693

694

bye = _library.gnutls_bye

695

bye.argtypes = [session_t, close_request_t]

696

bye.restype = _error_code

697

bye.errcheck = _retry_on_error

698

699

check_version = _library.gnutls_check_version

700

check_version.argtypes = [ctypes.c_char_p]

701

check_version.restype = ctypes.c_char_p

702

703

# All the function declarations below are from gnutls/openpgp.h

704

705

openpgp_crt_init = _library.gnutls_openpgp_crt_init

706

openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]

707

openpgp_crt_init.restype = _error_code

708

709

openpgp_crt_import = _library.gnutls_openpgp_crt_import

710

openpgp_crt_import.argtypes = [openpgp_crt_t,

711

ctypes.POINTER(datum_t),

712

openpgp_crt_fmt_t]

713

openpgp_crt_import.restype = _error_code

714

715

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

716

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

717

ctypes.POINTER(ctypes.c_uint)]

718

openpgp_crt_verify_self.restype = _error_code

719

720

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

721

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

722

openpgp_crt_deinit.restype = None

723

724

openpgp_crt_get_fingerprint = (

725

_library.gnutls_openpgp_crt_get_fingerprint)

726

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

727

ctypes.c_void_p,

728

ctypes.POINTER(

729

ctypes.c_size_t)]

730

openpgp_crt_get_fingerprint.restype = _error_code

731

732

# Remove non-public functions

733

del _error_code, _retry_on_error

734

# Create the global "gnutls" object, simulating a module

735

gnutls = GnuTLS()

736

737

427

def call_pipe(connection, # : multiprocessing.Connection

738

428

func, *args, **kwargs):

739

429

"""This function is meant to be called by multiprocessing.Process

754

444

checker: subprocess.Popen(); a running checker process used

755

445

to see if the client lives.

756

446

'None' if no process is running.

757

checker_callback_tag: a GLib event source tag, or None

447

checker_callback_tag: a gobject event source tag, or None

758

448

checker_command: string; External command which is run to check

759

449

if client lives. %() expansions are done at

760

450

runtime with vars(self) as dict, so that for

761

451

instance %(name)s can be used in the command.

762

checker_initiator_tag: a GLib event source tag, or None

452

checker_initiator_tag: a gobject event source tag, or None

763

453

created: datetime.datetime(); (UTC) object creation

764

454

client_structure: Object describing what attributes a client has

765

455

and is used for storing the client at exit

766

456

current_checker_command: string; current running checker_command

767

disable_initiator_tag: a GLib event source tag, or None

457

disable_initiator_tag: a gobject event source tag, or None

768

458

enabled: bool()

769

459

fingerprint: string (40 or 32 hexadecimal digits); used to

770

460

uniquely identify the client

833

523

client["fingerprint"] = (section["fingerprint"].upper()

834

524

.replace(" ", ""))

835

525

if "secret" in section:

836

client["secret"] = codecs.decode(section["secret"]

837

.encode("utf-8"),

838

"base64")

526

client["secret"] = section["secret"].decode("base64")

839

527

elif "secfile" in section:

840

528

with open(os.path.expanduser(os.path.expandvars

841

529

(section["secfile"])),

894

582

self.changedstate = multiprocessing_manager.Condition(

895

583

multiprocessing_manager.Lock())

896

584

self.client_structure = [attr

897

for attr in self.__dict__.keys()

585

for attr in self.__dict__.iterkeys()

898

586

if not attr.startswith("_")]

899

587

self.client_structure.append("client_structure")

900

588

926

614

if not quiet:

927

615

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

928

616

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

929

GLib.source_remove(self.disable_initiator_tag)

617

gobject.source_remove(self.disable_initiator_tag)

930

618

self.disable_initiator_tag = None

931

619

self.expires = None

932

620

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

933

GLib.source_remove(self.checker_initiator_tag)

621

gobject.source_remove(self.checker_initiator_tag)

934

622

self.checker_initiator_tag = None

935

623

self.stop_checker()

936

624

self.enabled = False

937

625

if not quiet:

938

626

self.send_changedstate()

939

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

627

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

940

628

return False

941

629

942

630

def __del__(self):

946

634

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

947

635

# and every interval from then on.

948

636

if self.checker_initiator_tag is not None:

949

GLib.source_remove(self.checker_initiator_tag)

950

self.checker_initiator_tag = GLib.timeout_add(

637

gobject.source_remove(self.checker_initiator_tag)

638

self.checker_initiator_tag = gobject.timeout_add(

951

639

int(self.interval.total_seconds() * 1000),

952

640

self.start_checker)

953

641

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

954

642

if self.disable_initiator_tag is not None:

955

GLib.source_remove(self.disable_initiator_tag)

956

self.disable_initiator_tag = GLib.timeout_add(

643

gobject.source_remove(self.disable_initiator_tag)

644

self.disable_initiator_tag = gobject.timeout_add(

957

645

int(self.timeout.total_seconds() * 1000), self.disable)

958

646

# Also start a new checker *right now*.

959

647

self.start_checker()

995

683

if timeout is None:

996

684

timeout = self.timeout

997

685

if self.disable_initiator_tag is not None:

998

GLib.source_remove(self.disable_initiator_tag)

686

gobject.source_remove(self.disable_initiator_tag)

999

687

self.disable_initiator_tag = None

1000

688

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

1001

self.disable_initiator_tag = GLib.timeout_add(

689

self.disable_initiator_tag = gobject.timeout_add(

1002

690

int(timeout.total_seconds() * 1000), self.disable)

1003

691

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

1004

692

1059

747

args = (pipe[1], subprocess.call, command),

1060

748

kwargs = popen_args)

1061

749

self.checker.start()

1062

self.checker_callback_tag = GLib.io_add_watch(

1063

pipe[0].fileno(), GLib.IO_IN,

750

self.checker_callback_tag = gobject.io_add_watch(

751

pipe[0].fileno(), gobject.IO_IN,

1064

752

self.checker_callback, pipe[0], command)

1065

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

753

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

1066

754

return True

1067

755

1068

756

def stop_checker(self):

1069

757

"""Force the checker process, if any, to stop."""

1070

758

if self.checker_callback_tag:

1071

GLib.source_remove(self.checker_callback_tag)

759

gobject.source_remove(self.checker_callback_tag)

1072

760

self.checker_callback_tag = None

1073

761

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

1074

762

return

1143

831

access="r")

1144

832

def Property_dbus_property(self):

1145

833

return dbus.Boolean(False)

1146

1147

See also the DBusObjectWithAnnotations class.

1148

834

"""

1149

835

1150

836

def decorator(func):

1172

858

pass

1173

859

1174

860

1175

class DBusObjectWithAnnotations(dbus.service.Object):

1176

"""A D-Bus object with annotations.

861

class DBusObjectWithProperties(dbus.service.Object):

862

"""A D-Bus object with properties.

1177

863

1178

Classes inheriting from this can use the dbus_annotations

1179

decorator to add annotations to methods or signals.

864

Classes inheriting from this can use the dbus_service_property

865

decorator to expose methods as D-Bus properties. It exposes the

866

standard Get(), Set(), and GetAll() methods on the D-Bus.

1180

867

"""

1181

868

1182

869

@staticmethod

1198

885

for name, athing in

1199

886

inspect.getmembers(cls, self._is_dbus_thing(thing)))

1200

887

1201

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1202

out_signature = "s",

1203

path_keyword = 'object_path',

1204

connection_keyword = 'connection')

1205

def Introspect(self, object_path, connection):

1206

"""Overloading of standard D-Bus method.

1207

1208

Inserts annotation tags on methods and signals.

1209

"""

1210

xmlstring = dbus.service.Object.Introspect(self, object_path,

1211

connection)

1212

try:

1213

document = xml.dom.minidom.parseString(xmlstring)

1214

1215

for if_tag in document.getElementsByTagName("interface"):

1216

# Add annotation tags

1217

for typ in ("method", "signal"):

1218

for tag in if_tag.getElementsByTagName(typ):

1219

annots = dict()

1220

for name, prop in (self.

1221

_get_all_dbus_things(typ)):

1222

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

1223

and prop._dbus_interface

1224

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

1225

annots.update(getattr(

1226

prop, "_dbus_annotations", {}))

1227

for name, value in annots.items():

1228

ann_tag = document.createElement(

1229

"annotation")

1230

ann_tag.setAttribute("name", name)

1231

ann_tag.setAttribute("value", value)

1232

tag.appendChild(ann_tag)

1233

# Add interface annotation tags

1234

for annotation, value in dict(

1235

itertools.chain.from_iterable(

1236

annotations().items()

1237

for name, annotations

1238

in self._get_all_dbus_things("interface")

1239

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

1240

)).items():

1241

ann_tag = document.createElement("annotation")

1242

ann_tag.setAttribute("name", annotation)

1243

ann_tag.setAttribute("value", value)

1244

if_tag.appendChild(ann_tag)

1245

# Fix argument name for the Introspect method itself

1246

if (if_tag.getAttribute("name")

1247

== dbus.INTROSPECTABLE_IFACE):

1248

for cn in if_tag.getElementsByTagName("method"):

1249

if cn.getAttribute("name") == "Introspect":

1250

for arg in cn.getElementsByTagName("arg"):

1251

if (arg.getAttribute("direction")

1252

== "out"):

1253

arg.setAttribute("name",

1254

"xml_data")

1255

xmlstring = document.toxml("utf-8")

1256

document.unlink()

1257

except (AttributeError, xml.dom.DOMException,

1258

xml.parsers.expat.ExpatError) as error:

1259

logger.error("Failed to override Introspection method",

1260

exc_info=error)

1261

return xmlstring

1262

1263

1264

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1265

"""A D-Bus object with properties.

1266

1267

Classes inheriting from this can use the dbus_service_property

1268

decorator to expose methods as D-Bus properties. It exposes the

1269

standard Get(), Set(), and GetAll() methods on the D-Bus.

1270

"""

1271

1272

888

def _get_dbus_property(self, interface_name, property_name):

1273

889

"""Returns a bound method if one exists which is a D-Bus

1274

890

property with the specified name and interface.

1284

900

raise DBusPropertyNotFound("{}:{}.{}".format(

1285

901

self.dbus_object_path, interface_name, property_name))

1286

902

1287

@classmethod

1288

def _get_all_interface_names(cls):

1289

"""Get a sequence of all interfaces supported by an object"""

1290

return (name for name in set(getattr(getattr(x, attr),

1291

"_dbus_interface", None)

1292

for x in (inspect.getmro(cls))

1293

for attr in dir(x))

1294

if name is not None)

1295

1296

903

@dbus.service.method(dbus.PROPERTIES_IFACE,

1297

904

in_signature="ss",

1298

905

out_signature="v")

1368

975

1369

976

Inserts property tags and interface annotation tags.

1370

977

"""

1371

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1372

object_path,

1373

connection)

978

xmlstring = dbus.service.Object.Introspect(self, object_path,

979

connection)

1374

980

try:

1375

981

document = xml.dom.minidom.parseString(xmlstring)

1376

982

1389

995

if prop._dbus_interface

1390

996

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

1391

997

if_tag.appendChild(tag)

1392

# Add annotation tags for properties

1393

for tag in if_tag.getElementsByTagName("property"):

1394

annots = dict()

1395

for name, prop in self._get_all_dbus_things(

1396

"property"):

1397

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

1398

and prop._dbus_interface

1399

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

1400

annots.update(getattr(

1401

prop, "_dbus_annotations", {}))

1402

for name, value in annots.items():

1403

ann_tag = document.createElement(

1404

"annotation")

1405

ann_tag.setAttribute("name", name)

1406

ann_tag.setAttribute("value", value)

1407

tag.appendChild(ann_tag)

998

# Add annotation tags

999

for typ in ("method", "signal", "property"):

1000

for tag in if_tag.getElementsByTagName(typ):

1001

annots = dict()

1002

for name, prop in (self.

1003

_get_all_dbus_things(typ)):

1004

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

1005

and prop._dbus_interface

1006

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

1007

annots.update(getattr(

1008

prop, "_dbus_annotations", {}))

1009

for name, value in annots.items():

1010

ann_tag = document.createElement(

1011

"annotation")

1012

ann_tag.setAttribute("name", name)

1013

ann_tag.setAttribute("value", value)

1014

tag.appendChild(ann_tag)

1015

# Add interface annotation tags

1016

for annotation, value in dict(

1017

itertools.chain.from_iterable(

1018

annotations().items()

1019

for name, annotations

1020

in self._get_all_dbus_things("interface")

1021

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

1022

)).items():

1023

ann_tag = document.createElement("annotation")

1024

ann_tag.setAttribute("name", annotation)

1025

ann_tag.setAttribute("value", value)

1026

if_tag.appendChild(ann_tag)

1408

1027

# Add the names to the return values for the

1409

1028

# "org.freedesktop.DBus.Properties" methods

1410

1029

if (if_tag.getAttribute("name")

1428

1047

exc_info=error)

1429

1048

return xmlstring

1430

1049

1431

try:

1432

dbus.OBJECT_MANAGER_IFACE

1433

except AttributeError:

1434

dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"

1435

1436

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1437

"""A D-Bus object with an ObjectManager.

1438

1439

Classes inheriting from this exposes the standard

1440

GetManagedObjects call and the InterfacesAdded and

1441

InterfacesRemoved signals on the standard

1442

"org.freedesktop.DBus.ObjectManager" interface.

1443

1444

Note: No signals are sent automatically; they must be sent

1445

manually.

1446

"""

1447

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1448

out_signature = "a{oa{sa{sv}}}")

1449

def GetManagedObjects(self):

1450

"""This function must be overridden"""

1451

raise NotImplementedError()

1452

1453

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1454

signature = "oa{sa{sv}}")

1455

def InterfacesAdded(self, object_path, interfaces_and_properties):

1456

pass

1457

1458

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")

1459

def InterfacesRemoved(self, object_path, interfaces):

1460

pass

1461

1462

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1463

out_signature = "s",

1464

path_keyword = 'object_path',

1465

connection_keyword = 'connection')

1466

def Introspect(self, object_path, connection):

1467

"""Overloading of standard D-Bus method.

1468

1469

Override return argument name of GetManagedObjects to be

1470

"objpath_interfaces_and_properties"

1471

"""

1472

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1473

object_path,

1474

connection)

1475

try:

1476

document = xml.dom.minidom.parseString(xmlstring)

1477

1478

for if_tag in document.getElementsByTagName("interface"):

1479

# Fix argument name for the GetManagedObjects method

1480

if (if_tag.getAttribute("name")

1481

== dbus.OBJECT_MANAGER_IFACE):

1482

for cn in if_tag.getElementsByTagName("method"):

1483

if (cn.getAttribute("name")

1484

== "GetManagedObjects"):

1485

for arg in cn.getElementsByTagName("arg"):

1486

if (arg.getAttribute("direction")

1487

== "out"):

1488

arg.setAttribute(

1489

"name",

1490

"objpath_interfaces"

1491

"_and_properties")

1492

xmlstring = document.toxml("utf-8")

1493

document.unlink()

1494

except (AttributeError, xml.dom.DOMException,

1495

xml.parsers.expat.ExpatError) as error:

1496

logger.error("Failed to override Introspection method",

1497

exc_info = error)

1498

return xmlstring

1499

1050

1500

1051

def datetime_to_dbus(dt, variant_level=0):

1501

1052

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

1548

1099

interface_names.add(alt_interface)

1549

1100

# Is this a D-Bus signal?

1550

1101

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

1551

# Extract the original non-method undecorated

1552

# function by black magic

1553

1102

if sys.version_info.major == 2:

1103

# Extract the original non-method undecorated

1104

# function by black magic

1554

1105

nonmethod_func = (dict(

1555

1106

zip(attribute.func_code.co_freevars,

1556

1107

attribute.__closure__))

1557

1108

["func"].cell_contents)

1558

1109

else:

1559

nonmethod_func = (dict(

1560

zip(attribute.__code__.co_freevars,

1561

attribute.__closure__))

1562

["func"].cell_contents)

1110

nonmethod_func = attribute

1563

1111

# Create a new, but exactly alike, function

1564

1112

# object, and decorate it to be a new D-Bus signal

1565

1113

# with the alternate D-Bus interface name

1566

new_function = copy_function(nonmethod_func)

1114

if sys.version_info.major == 2:

1115

new_function = types.FunctionType(

1116

nonmethod_func.func_code,

1117

nonmethod_func.func_globals,

1118

nonmethod_func.func_name,

1119

nonmethod_func.func_defaults,

1120

nonmethod_func.func_closure)

1121

else:

1122

new_function = types.FunctionType(

1123

nonmethod_func.__code__,

1124

nonmethod_func.__globals__,

1125

nonmethod_func.__name__,

1126

nonmethod_func.__defaults__,

1127

nonmethod_func.__closure__)

1567

1128

new_function = (dbus.service.signal(

1568

1129

alt_interface,

1569

1130

attribute._dbus_signature)(new_function))

1582

1143

func1 and func2 to the "call_both" function

1583

1144

outside of its arguments"""

1584

1145

1585

@functools.wraps(func2)

1586

1146

def call_both(*args, **kwargs):

1587

1147

"""This function will emit two D-Bus

1588

1148

signals by calling func1 and func2"""

1589

1149

func1(*args, **kwargs)

1590

1150

func2(*args, **kwargs)

1591

# Make wrapper function look like a D-Bus signal

1592

for name, attr in inspect.getmembers(func2):

1593

if name.startswith("_dbus_"):

1594

setattr(call_both, name, attr)

1595

1151

1596

1152

return call_both

1597

1153

# Create the "call_both" function and add it to

1608

1164

alt_interface,

1609

1165

attribute._dbus_in_signature,

1610

1166

attribute._dbus_out_signature)

1611

(copy_function(attribute)))

1167

(types.FunctionType(attribute.func_code,

1168

attribute.func_globals,

1169

attribute.func_name,

1170

attribute.func_defaults,

1171

attribute.func_closure)))

1612

1172

# Copy annotations, if any

1613

1173

try:

1614

1174

attr[attrname]._dbus_annotations = dict(

1626

1186

attribute._dbus_access,

1627

1187

attribute._dbus_get_args_options

1628

1188

["byte_arrays"])

1629

(copy_function(attribute)))

1189

(types.FunctionType(

1190

attribute.func_code,

1191

attribute.func_globals,

1192

attribute.func_name,

1193

attribute.func_defaults,

1194

attribute.func_closure)))

1630

1195

# Copy annotations, if any

1631

1196

try:

1632

1197

attr[attrname]._dbus_annotations = dict(

1641

1206

# to the class.

1642

1207

attr[attrname] = (

1643

1208

dbus_interface_annotations(alt_interface)

1644

(copy_function(attribute)))

1209

(types.FunctionType(attribute.func_code,

1210

attribute.func_globals,

1211

attribute.func_name,

1212

attribute.func_defaults,

1213

attribute.func_closure)))

1645

1214

if deprecate:

1646

1215

# Deprecate all alternate interfaces

1647

1216

iname="_AlternateDBusNames_interface_annotation{}"

1660

1229

if interface_names:

1661

1230

# Replace the class with a new subclass of it with

1662

1231

# methods, signals, etc. as created above.

1663

if sys.version_info.major == 2:

1664

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

1665

(cls, ), attr)

1666

else:

1667

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

1668

(cls, ), attr)

1232

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

1233

(cls, ), attr)

1669

1234

return cls

1670

1235

1671

1236

return wrapper

1800

1365

if exitstatus >= 0:

1801

1366

# Emit D-Bus signal

1802

1367

self.CheckerCompleted(dbus.Int16(exitstatus),

1803

# This is specific to GNU libC

1804

dbus.Int64(exitstatus << 8),

1368

dbus.Int64(0),

1805

1369

dbus.String(command))

1806

1370

else:

1807

1371

# Emit D-Bus signal

1808

1372

self.CheckerCompleted(dbus.Int16(-1),

1809

1373

dbus.Int64(

1810

# This is specific to GNU libC

1811

(exitstatus << 8)

1812

| self.last_checker_signal),

1374

self.last_checker_signal),

1813

1375

dbus.String(command))

1814

1376

return ret

1815

1377

1829

1391

1830

1392

def approve(self, value=True):

1831

1393

self.approved = value

1832

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

1833

* 1000), self._reset_approved)

1394

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

1395

* 1000), self._reset_approved)

1834

1396

self.send_changedstate()

1835

1397

1836

1398

## D-Bus methods, signals & properties

1892

1454

self.checked_ok()

1893

1455

1894

1456

# Enable - method

1895

@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})

1896

1457

@dbus.service.method(_interface)

1897

1458

def Enable(self):

1898

1459

"D-Bus method"

1899

1460

self.enable()

1900

1461

1901

1462

# StartChecker - method

1902

@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})

1903

1463

@dbus.service.method(_interface)

1904

1464

def StartChecker(self):

1905

1465

"D-Bus method"

1906

1466

self.start_checker()

1907

1467

1908

1468

# Disable - method

1909

@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})

1910

1469

@dbus.service.method(_interface)

1911

1470

def Disable(self):

1912

1471

"D-Bus method"

1913

1472

self.disable()

1914

1473

1915

1474

# StopChecker - method

1916

@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})

1917

1475

@dbus.service.method(_interface)

1918

1476

def StopChecker(self):

1919

1477

self.stop_checker()

1955

1513

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

1956

1514

1957

1515

# Name - property

1958

@dbus_annotations(

1959

{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})

1960

1516

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

1961

1517

def Name_dbus_property(self):

1962

1518

return dbus.String(self.name)

1963

1519

1964

1520

# Fingerprint - property

1965

@dbus_annotations(

1966

{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})

1967

1521

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

1968

1522

def Fingerprint_dbus_property(self):

1969

1523

return dbus.String(self.fingerprint)

1978

1532

self.host = str(value)

1979

1533

1980

1534

# Created - property

1981

@dbus_annotations(

1982

{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})

1983

1535

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

1984

1536

def Created_dbus_property(self):

1985

1537

return datetime_to_dbus(self.created)

2046

1598

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

2047

1599

is None):

2048

1600

return

2049

GLib.source_remove(self.disable_initiator_tag)

2050

self.disable_initiator_tag = GLib.timeout_add(

1601

gobject.source_remove(self.disable_initiator_tag)

1602

self.disable_initiator_tag = gobject.timeout_add(

2051

1603

int((self.expires - now).total_seconds() * 1000),

2052

1604

self.disable)

2053

1605

2073

1625

return

2074

1626

if self.enabled:

2075

1627

# Reschedule checker run

2076

GLib.source_remove(self.checker_initiator_tag)

2077

self.checker_initiator_tag = GLib.timeout_add(

1628

gobject.source_remove(self.checker_initiator_tag)

1629

self.checker_initiator_tag = gobject.timeout_add(

2078

1630

value, self.start_checker)

2079

1631

self.start_checker() # Start one now, too

2080

1632

2100

1652

self.stop_checker()

2101

1653

2102

1654

# ObjectPath - property

2103

@dbus_annotations(

2104

{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",

2105

"org.freedesktop.DBus.Deprecated": "true"})

2106

1655

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

2107

1656

def ObjectPath_dbus_property(self):

2108

1657

return self.dbus_object_path # is already a dbus.ObjectPath

2109

1658

2110

1659

# Secret = property

2111

@dbus_annotations(

2112

{"org.freedesktop.DBus.Property.EmitsChangedSignal":

2113

"invalidates"})

2114

1660

@dbus_service_property(_interface,

2115

1661

signature="ay",

2116

1662

access="write",

2162

1708

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

2163

1709

self.server.child_pipe.fileno())

2164

1710

2165

session = gnutls.ClientSession(self.request)

1711

session = gnutls.connection.ClientSession(

1712

self.request, gnutls.connection .X509Credentials())

1713

1714

# Note: gnutls.connection.X509Credentials is really a

1715

# generic GnuTLS certificate credentials object so long as

1716

# no X.509 keys are added to it. Therefore, we can use it

1717

# here despite using OpenPGP certificates.

2166

1718

2167

1719

#priority = ':'.join(("NONE", "+VERS-TLS1.1",

2168

1720

# "+AES-256-CBC", "+SHA1",

2172

1724

priority = self.server.gnutls_priority

2173

1725

if priority is None:

2174

1726

priority = "NORMAL"

2175

gnutls.priority_set_direct(session._c_object, priority,

2176

None)

1727

gnutls.library.functions.gnutls_priority_set_direct(

1728

session._c_object, priority, None)

2177

1729

2178

1730

# Start communication using the Mandos protocol

2179

1731

# Get protocol number

2189

1741

# Start GnuTLS connection

2190

1742

try:

2191

1743

session.handshake()

2192

except gnutls.Error as error:

1744

except gnutls.errors.GNUTLSError as error:

2193

1745

logger.warning("Handshake failed: %s", error)

2194

1746

# Do not run session.bye() here: the session is not

2195

1747

# established. Just abandon the request.

2201

1753

try:

2202

1754

fpr = self.fingerprint(

2203

1755

self.peer_certificate(session))

2204

except (TypeError, gnutls.Error) as error:

1756

except (TypeError,

1757

gnutls.errors.GNUTLSError) as error:

2205

1758

logger.warning("Bad certificate: %s", error)

2206

1759

return

2207

1760

logger.debug("Fingerprint: %s", fpr)

2265

1818

else:

2266

1819

delay -= time2 - time

2267

1820

2268

try:

2269

session.send(client.secret)

2270

except gnutls.Error as error:

2271

logger.warning("gnutls send failed",

2272

exc_info = error)

2273

return

1821

sent_size = 0

1822

while sent_size < len(client.secret):

1823

try:

1824

sent = session.send(client.secret[sent_size:])

1825

except gnutls.errors.GNUTLSError as error:

1826

logger.warning("gnutls send failed",

1827

exc_info=error)

1828

return

1829

logger.debug("Sent: %d, remaining: %d", sent,

1830

len(client.secret) - (sent_size

1831

+ sent))

1832

sent_size += sent

2274

1833

2275

1834

logger.info("Sending secret to %s", client.name)

2276

1835

# bump the timeout using extended_timeout

2284

1843

client.approvals_pending -= 1

2285

1844

try:

2286

1845

session.bye()

2287

except gnutls.Error as error:

1846

except gnutls.errors.GNUTLSError as error:

2288

1847

logger.warning("GnuTLS bye failed",

2289

1848

exc_info=error)

2290

1849

2292

1851

def peer_certificate(session):

2293

1852

"Return the peer's OpenPGP certificate as a bytestring"

2294

1853

# If not an OpenPGP certificate...

2295

if (gnutls.certificate_type_get(session._c_object)

2296

!= gnutls.CRT_OPENPGP):

2297

# ...return invalid data

2298

return b""

1854

if (gnutls.library.functions.gnutls_certificate_type_get(

1855

session._c_object)

1856

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1857

# ...do the normal thing

1858

return session.peer_certificate

2299

1859

list_size = ctypes.c_uint(1)

2300

cert_list = (gnutls.certificate_get_peers

1860

cert_list = (gnutls.library.functions

1861

.gnutls_certificate_get_peers

2301

1862

(session._c_object, ctypes.byref(list_size)))

2302

1863

if not bool(cert_list) and list_size.value != 0:

2303

raise gnutls.Error("error getting peer certificate")

1864

raise gnutls.errors.GNUTLSError("error getting peer"

1865

" certificate")

2304

1866

if list_size.value == 0:

2305

1867

return None

2306

1868

cert = cert_list[0]

2310

1872

def fingerprint(openpgp):

2311

1873

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2312

1874

# New GnuTLS "datum" with the OpenPGP public key

2313

datum = gnutls.datum_t(

1875

datum = gnutls.library.types.gnutls_datum_t(

2314

1876

ctypes.cast(ctypes.c_char_p(openpgp),

2315

1877

ctypes.POINTER(ctypes.c_ubyte)),

2316

1878

ctypes.c_uint(len(openpgp)))

2317

1879

# New empty GnuTLS certificate

2318

crt = gnutls.openpgp_crt_t()

2319

gnutls.openpgp_crt_init(ctypes.byref(crt))

1880

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1881

gnutls.library.functions.gnutls_openpgp_crt_init(

1882

ctypes.byref(crt))

2320

1883

# Import the OpenPGP public key into the certificate

2321

gnutls.openpgp_crt_import(crt, ctypes.byref(datum),

2322

gnutls.OPENPGP_FMT_RAW)

1884

gnutls.library.functions.gnutls_openpgp_crt_import(

1885

crt, ctypes.byref(datum),

1886

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

2323

1887

# Verify the self signature in the key

2324

1888

crtverify = ctypes.c_uint()

2325

gnutls.openpgp_crt_verify_self(crt, 0,

2326

ctypes.byref(crtverify))

1889

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1890

crt, 0, ctypes.byref(crtverify))

2327

1891

if crtverify.value != 0:

2328

gnutls.openpgp_crt_deinit(crt)

2329

raise gnutls.CertificateSecurityError("Verify failed")

1892

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1893

raise gnutls.errors.CertificateSecurityError(

1894

"Verify failed")

2330

1895

# New buffer for the fingerprint

2331

1896

buf = ctypes.create_string_buffer(20)

2332

1897

buf_len = ctypes.c_size_t()

2333

1898

# Get the fingerprint from the certificate into the buffer

2334

gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),

2335

ctypes.byref(buf_len))

1899

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1900

crt, ctypes.byref(buf), ctypes.byref(buf_len))

2336

1901

# Deinit the certificate

2337

gnutls.openpgp_crt_deinit(crt)

1902

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2338

1903

# Convert the buffer to a Python bytestring

2339

1904

fpr = ctypes.string_at(buf, buf_len.value)

2340

1905

# Convert the bytestring to hexadecimal notation

2484

2049

gnutls_priority GnuTLS priority string

2485

2050

use_dbus: Boolean; to emit D-Bus signals or not

2486

2051

2487

Assumes a GLib.MainLoop event loop.

2052

Assumes a gobject.MainLoop event loop.

2488

2053

"""

2489

2054

2490

2055

def __init__(self, server_address, RequestHandlerClass,

2515

2080

2516

2081

def add_pipe(self, parent_pipe, proc):

2517

2082

# Call "handle_ipc" for both data and EOF events

2518

GLib.io_add_watch(

2083

gobject.io_add_watch(

2519

2084

parent_pipe.fileno(),

2520

GLib.IO_IN | GLib.IO_HUP,

2085

gobject.IO_IN | gobject.IO_HUP,

2521

2086

functools.partial(self.handle_ipc,

2522

2087

parent_pipe = parent_pipe,

2523

2088

proc = proc))

2527

2092

proc = None,

2528

2093

client_object=None):

2529

2094

# error, or the other end of multiprocessing.Pipe has closed

2530

if condition & (GLib.IO_ERR | GLib.IO_HUP):

2095

if condition & (gobject.IO_ERR | gobject.IO_HUP):

2531

2096

# Wait for other process to exit

2532

2097

proc.join()

2533

2098

return False

2540

2105

fpr = request[1]

2541

2106

address = request[2]

2542

2107

2543

for c in self.clients.values():

2108

for c in self.clients.itervalues():

2544

2109

if c.fingerprint == fpr:

2545

2110

client = c

2546

2111

break

2554

2119

parent_pipe.send(False)

2555

2120

return False

2556

2121

2557

GLib.io_add_watch(

2122

gobject.io_add_watch(

2558

2123

parent_pipe.fileno(),

2559

GLib.IO_IN | GLib.IO_HUP,

2124

gobject.IO_IN | gobject.IO_HUP,

2560

2125

functools.partial(self.handle_ipc,

2561

2126

parent_pipe = parent_pipe,

2562

2127

proc = proc,

2821

2386

"debug": "False",

2822

2387

"priority":

2823

2388

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

2824

":+SIGN-DSA-SHA256",

2389

":+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",

2825

2390

"servicename": "Mandos",

2826

2391

"use_dbus": "True",

2827

2392

"use_ipv6": "True",

2944

2509

logger.error("Could not open file %r", pidfilename,

2945

2510

exc_info=e)

2946

2511

2947

for name, group in (("_mandos", "_mandos"),

2948

("mandos", "mandos"),

2949

("nobody", "nogroup")):

2512

for name in ("_mandos", "mandos", "nobody"):

2950

2513

try:

2951

2514

uid = pwd.getpwnam(name).pw_uid

2952

gid = pwd.getpwnam(group).pw_gid

2515

gid = pwd.getpwnam(name).pw_gid

2953

2516

break

2954

2517

except KeyError:

2955

2518

continue

2959

2522

try:

2960

2523

os.setgid(gid)

2961

2524

os.setuid(uid)

2962

if debug:

2963

logger.debug("Did setuid/setgid to {}:{}".format(uid,

2964

gid))

2965

2525

except OSError as error:

2966

logger.warning("Failed to setuid/setgid to {}:{}: {}"

2967

.format(uid, gid, os.strerror(error.errno)))

2968

2526

if error.errno != errno.EPERM:

2969

2527

raise

2970

2528

2973

2531

2974

2532

# "Use a log level over 10 to enable all debugging options."

2975

2533

# - GnuTLS manual

2976

gnutls.global_set_log_level(11)

2534

gnutls.library.functions.gnutls_global_set_log_level(11)

2977

2535

2978

@gnutls.log_func

2536

@gnutls.library.types.gnutls_log_func

2979

2537

def debug_gnutls(level, string):

2980

2538

logger.debug("GnuTLS: %s", string[:-1])

2981

2539

2982

gnutls.global_set_log_function(debug_gnutls)

2540

gnutls.library.functions.gnutls_global_set_log_function(

2541

debug_gnutls)

2983

2542

2984

2543

# Redirect stdin so all checkers get /dev/null

2985

2544

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

2992

2551

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

2993

2552

daemon()

2994

2553

2995

# multiprocessing will use threads, so before we use GLib we need

2996

# to inform GLib that threads will be used.

2997

GLib.threads_init()

2554

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

2555

# need to inform gobject that threads will be used.

2556

gobject.threads_init()

2998

2557

2999

2558

global main_loop

3000

2559

# From the Avahi example code

3001

2560

DBusGMainLoop(set_as_default=True)

3002

main_loop = GLib.MainLoop()

2561

main_loop = gobject.MainLoop()

3003

2562

bus = dbus.SystemBus()

3004

2563

# End of Avahi example code

3005

2564

if use_dbus:

3049

2608

if server_settings["restore"]:

3050

2609

try:

3051

2610

with open(stored_state_path, "rb") as stored_state:

3052

if sys.version_info.major == 2:

3053

clients_data, old_client_settings = pickle.load(

3054

stored_state)

3055

else:

3056

bytes_clients_data, bytes_old_client_settings = (

3057

pickle.load(stored_state, encoding = "bytes"))

3058

### Fix bytes to strings

3059

## clients_data

3060

# .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() }

3066

del bytes_clients_data

3067

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() }

3072

clients_data[key] = value

3073

# .client_structure

3074

value["client_structure"] = [

3075

(s.decode("utf-8")

3076

if isinstance(s, bytes)

3077

else s) for s in

3078

value["client_structure"] ]

3079

# .name & .host

3080

for k in ("name", "host"):

3081

if isinstance(value[k], bytes):

3082

value[k] = value[k].decode("utf-8")

3083

## old_client_settings

3084

# .keys()

3085

old_client_settings = {

3086

(key.decode("utf-8")

3087

if isinstance(key, bytes)

3088

else key): value

3089

for key, value in

3090

bytes_old_client_settings.items() }

3091

del bytes_old_client_settings

3092

# .host

3093

for value in old_client_settings.values():

3094

if isinstance(value["host"], bytes):

3095

value["host"] = (value["host"]

3096

.decode("utf-8"))

2611

clients_data, old_client_settings = pickle.load(

2612

stored_state)

3097

2613

os.remove(stored_state_path)

3098

2614

except IOError as e:

3099

2615

if e.errno == errno.ENOENT:

3200

2716

del pidfile

3201

2717

del pidfilename

3202

2718

3203

for termsig in (signal.SIGHUP, signal.SIGTERM):

3204

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3205

lambda: main_loop.quit() and False)

2719

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

2720

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

3206

2721

3207

2722

if use_dbus:

3208

2723

3209

2724

@alternate_dbus_interfaces(

3210

2725

{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })

3211

class MandosDBusService(DBusObjectWithObjectManager):

2726

class MandosDBusService(DBusObjectWithProperties):

3212

2727

"""A D-Bus proxy object"""

3213

2728

3214

2729

def __init__(self):

3216

2731

3217

2732

_interface = "se.recompile.Mandos"

3218

2733

2734

@dbus_interface_annotations(_interface)

2735

def _foo(self):

2736

return {

2737

"org.freedesktop.DBus.Property.EmitsChangedSignal":

2738

"false" }

2739

3219

2740

@dbus.service.signal(_interface, signature="o")

3220

2741

def ClientAdded(self, objpath):

3221

2742

"D-Bus signal"

3226

2747

"D-Bus signal"

3227

2748

pass

3228

2749

3229

@dbus_annotations({"org.freedesktop.DBus.Deprecated":

3230

"true"})

3231

2750

@dbus.service.signal(_interface, signature="os")

3232

2751

def ClientRemoved(self, objpath, name):

3233

2752

"D-Bus signal"

3234

2753

pass

3235

2754

3236

@dbus_annotations({"org.freedesktop.DBus.Deprecated":

3237

"true"})

3238

2755

@dbus.service.method(_interface, out_signature="ao")

3239

2756

def GetAllClients(self):

3240

2757

"D-Bus method"

3241

2758

return dbus.Array(c.dbus_object_path for c in

3242

tcp_server.clients.values())

2759

tcp_server.clients.itervalues())

3243

2760

3244

@dbus_annotations({"org.freedesktop.DBus.Deprecated":

3245

"true"})

3246

2761

@dbus.service.method(_interface,

3247

2762

out_signature="a{oa{sv}}")

3248

2763

def GetAllClientsWithProperties(self):

3249

2764

"D-Bus method"

3250

2765

return dbus.Dictionary(

3251

{ c.dbus_object_path: c.GetAll(

3252

"se.recompile.Mandos.Client")

3253

for c in tcp_server.clients.values() },

2766

{ c.dbus_object_path: c.GetAll("")

2767

for c in tcp_server.clients.itervalues() },

3254

2768

signature="oa{sv}")

3255

2769

3256

2770

@dbus.service.method(_interface, in_signature="o")

3257

2771

def RemoveClient(self, object_path):

3258

2772

"D-Bus method"

3259

for c in tcp_server.clients.values():

2773

for c in tcp_server.clients.itervalues():

3260

2774

if c.dbus_object_path == object_path:

3261

2775

del tcp_server.clients[c.name]

3262

2776

c.remove_from_connection()

3263

# Don't signal the disabling

2777

# Don't signal anything except ClientRemoved

3264

2778

c.disable(quiet=True)

3265

# Emit D-Bus signal for removal

3266

self.client_removed_signal(c)

2779

# Emit D-Bus signal

2780

self.ClientRemoved(object_path, c.name)

3267

2781

return

3268

2782

raise KeyError(object_path)

3269

2783

3270

2784

del _interface

3271

3272

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3273

out_signature = "a{oa{sa{sv}}}")

3274

def GetManagedObjects(self):

3275

"""D-Bus method"""

3276

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

3284

def client_added_signal(self, client):

3285

"""Send the new standard signal and the old signal"""

3286

if use_dbus:

3287

# New standard signal

3288

self.InterfacesAdded(

3289

client.dbus_object_path,

3290

dbus.Dictionary(

3291

{ interface: client.GetAll(interface)

3292

for interface in

3293

client._get_all_interface_names()}))

3294

# Old signal

3295

self.ClientAdded(client.dbus_object_path)

3296

3297

def client_removed_signal(self, client):

3298

"""Send the new standard signal and the old signal"""

3299

if use_dbus:

3300

# New standard signal

3301

self.InterfacesRemoved(

3302

client.dbus_object_path,

3303

client._get_all_interface_names())

3304

# Old signal

3305

self.ClientRemoved(client.dbus_object_path,

3306

client.name)

3307

2785

3308

2786

mandos_dbus_service = MandosDBusService()

3309

2787

3322

2800

# removed/edited, old secret will thus be unrecovable.

3323

2801

clients = {}

3324

2802

with PGPEngine() as pgp:

3325

for client in tcp_server.clients.values():

2803

for client in tcp_server.clients.itervalues():

3326

2804

key = client_settings[client.name]["secret"]

3327

2805

client.encrypted_secret = pgp.encrypt(client.secret,

3328

2806

key)

3352

2830

prefix='clients-',

3353

2831

dir=os.path.dirname(stored_state_path),

3354

2832

delete=False) as stored_state:

3355

pickle.dump((clients, client_settings), stored_state,

3356

protocol = 2)

2833

pickle.dump((clients, client_settings), stored_state)

3357

2834

tempname = stored_state.name

3358

2835

os.rename(tempname, stored_state_path)

3359

2836

except (IOError, OSError) as e:

3375

2852

name, client = tcp_server.clients.popitem()

3376

2853

if use_dbus:

3377

2854

client.remove_from_connection()

3378

# Don't signal the disabling

2855

# Don't signal anything except ClientRemoved

3379

2856

client.disable(quiet=True)

3380

# Emit D-Bus signal for removal

3381

2857

if use_dbus:

3382

mandos_dbus_service.client_removed_signal(client)

2858

# Emit D-Bus signal

2859

mandos_dbus_service.ClientRemoved(

2860

client.dbus_object_path, client.name)

3383

2861

client_settings.clear()

3384

2862

3385

2863

atexit.register(cleanup)

3386

2864

3387

for client in tcp_server.clients.values():

2865

for client in tcp_server.clients.itervalues():

3388

2866

if use_dbus:

3389

# Emit D-Bus signal for adding

3390

mandos_dbus_service.client_added_signal(client)

2867

# Emit D-Bus signal

2868

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3391

2869

# Need to initiate checking of clients

3392

2870

if client.enabled:

3393

2871

client.init_checker()

3419

2897

sys.exit(1)

3420

2898

# End of Avahi example code

3421

2899

3422

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

3423

lambda *args, **kwargs:

3424

(tcp_server.handle_request

3425

(*args[2:], **kwargs) or True))

2900

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

2901

lambda *args, **kwargs:

2902

(tcp_server.handle_request

2903

(*args[2:], **kwargs) or True))

3426

2904

3427

2905

logger.debug("Starting main loop")

3428

2906

main_loop.run()