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# -*- mode: python; coding: utf-8 -*-
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# Mandos server - give out binary blobs to connecting clients.
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# This program is partly derived from an example program for an Avahi
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# service publisher, downloaded from
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# <http://avahi.org/wiki/PythonPublishExample>. This includes the
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# methods "add", "remove", "server_state_changed",
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# "entry_group_state_changed", "cleanup", and "activate" in the
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# "AvahiService" class, and some lines in "main".
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# Everything else is
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# Copyright © 2008-2018 Teddy Hogeborn
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# Copyright © 2008-2018 Björn Påhlsson
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# This file is part of Mandos.
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# Mandos is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by
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# Copyright © 2008-2012 Teddy Hogeborn
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# Copyright © 2008-2012 Björn Påhlsson
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# Mandos is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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# Contact the authors at <mandos@recompile.se>.
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from __future__ import (division, absolute_import, print_function,
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from future_builtins import *
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from future_builtins import *
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import SocketServer as socketserver
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import SocketServer as socketserver
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import ConfigParser as configparser
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import gnutls.connection
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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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import ConfigParser as configparser
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import cPickle as pickle
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import cPickle as pickle
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import multiprocessing
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import dbus.service
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from gi.repository import GLib
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from dbus.mainloop.glib import DBusGMainLoop
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import xml.dom.minidom
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# Try to find the value of SO_BINDTODEVICE:
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# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
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# newer, and it is also the most natural place for it:
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SO_BINDTODEVICE = socket.SO_BINDTODEVICE
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except AttributeError:
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# This is where SO_BINDTODEVICE was up to and including Python
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from IN import SO_BINDTODEVICE
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except ImportError:
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# In Python 2.7 it seems to have been removed entirely.
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# Try running the C preprocessor:
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cc = subprocess.Popen(["cc", "--language=c", "-E",
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE)
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stdout = cc.communicate(
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"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
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SO_BINDTODEVICE = int(stdout.splitlines()[-1])
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except (OSError, ValueError, IndexError):
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SO_BINDTODEVICE = None
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if sys.version_info.major == 2:
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SO_BINDTODEVICE = None
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stored_state_file = "clients.pickle"
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logger = logging.getLogger()
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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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if_nametoindex = ctypes.cdll.LoadLibrary(
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ctypes.util.find_library("c")).if_nametoindex
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if_nametoindex = (ctypes.cdll.LoadLibrary
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(ctypes.util.find_library("c"))
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except (OSError, AttributeError):
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def if_nametoindex(interface):
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"Get an interface index the hard way, i.e. using fcntl()"
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SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
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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_index = struct.unpack(str("I"),
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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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return types.FunctionType(func.__code__,
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def initlogger(debug, level=logging.WARNING):
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"""init logger and add loglevel"""
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syslogger = (logging.handlers.SysLogHandler(
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facility=logging.handlers.SysLogHandler.LOG_DAEMON,
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syslogger.setFormatter(logging.Formatter
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('Mandos [%(process)d]: %(levelname)s:'
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logger.addHandler(syslogger)
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
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os.rmdir(self.tempdir)
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self.tempdir = None
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def password_encode(self, password):
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# Passphrase can not be empty and can not contain newlines or
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# NUL bytes. So we prefix it and hex encode it.
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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 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(
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dir=self.tempdir) as passfile:
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passfile.write(passphrase)
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proc = subprocess.Popen([self.gpg, '--symmetric',
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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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self.gnupg.passphrase = self.password_encode(password)
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with open(os.devnull, "w") as devnull:
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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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with contextlib.closing(proc.handles['stdout']) as f:
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ciphertext = f.read()
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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(
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dir=self.tempdir) as passfile:
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passfile.write(passphrase)
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proc = subprocess.Popen([self.gpg, '--decrypt',
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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=data)
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if proc.returncode != 0:
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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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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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with contextlib.closing(proc.handles['stdout']) as f:
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decrypted_plaintext = f.read()
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self.gnupg.passphrase = None
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return decrypted_plaintext
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# Pretend that we have an Avahi module
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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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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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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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class AvahiGroupError(AvahiError):
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class AvahiService(object):
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"""An Avahi (Zeroconf) service.
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interface: integer; avahi.IF_UNSPEC or an interface index.
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Used to optionally bind to the specified interface.
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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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follow_name_owner_changes=True),
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avahi.DBUS_INTERFACE_SERVER)
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self.server.connect_to_signal("StateChanged",
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self.server_state_changed)
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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, *args, **kwargs):
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"""Add the new name to the syslog messages"""
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ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
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syslogger.setFormatter(logging.Formatter(
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'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
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ret = AvahiService.rename(self)
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syslogger.setFormatter(logging.Formatter
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('Mandos ({0}) [%(process)d]:'
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' %(levelname)s: %(message)s'
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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.util.find_library("gnutls")
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library = ctypes.util.find_library("gnutls-deb0")
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_library = ctypes.cdll.LoadLibrary(library)
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_need_version = b"3.3.0"
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# Need to use "self" here, since this method is called before
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# the assignment to the "gnutls" global variable happens.
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if self.check_version(self._need_version) is None:
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raise self.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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E_NO_CERTIFICATE_FOUND = -49
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OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
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class session_int(ctypes.Structure):
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session_t = ctypes.POINTER(session_int)
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class certificate_credentials_st(ctypes.Structure):
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certificate_credentials_t = ctypes.POINTER(
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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)]
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class openpgp_crt_int(ctypes.Structure):
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openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
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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)
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credentials_type_t = ctypes.c_int
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transport_ptr_t = ctypes.c_void_p
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close_request_t = ctypes.c_int
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class Error(Exception):
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# We need to use the class name "GnuTLS" here, since this
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# exception might be raised from within GnuTLS.__init__,
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# which is called before the assignment to the "gnutls"
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# global variable has happened.
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def __init__(self, message=None, code=None, args=()):
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# Default usage is by a message string, but if a return
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# code is passed, convert it to a string with
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if message is None and code is not None:
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message = GnuTLS.strerror(code)
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return super(GnuTLS.Error, self).__init__(
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class CertificateSecurityError(Error):
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class Credentials(object):
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self._c_object = gnutls.certificate_credentials_t()
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gnutls.certificate_allocate_credentials(
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ctypes.byref(self._c_object))
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self.type = gnutls.CRD_CERTIFICATE
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gnutls.certificate_free_credentials(self._c_object)
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class ClientSession(object):
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def __init__(self, socket, credentials=None):
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self._c_object = gnutls.session_t()
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gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
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gnutls.set_default_priority(self._c_object)
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gnutls.transport_set_ptr(self._c_object, socket.fileno())
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gnutls.handshake_set_private_extensions(self._c_object,
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if credentials is None:
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credentials = gnutls.Credentials()
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gnutls.credentials_set(self._c_object, credentials.type,
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ctypes.cast(credentials._c_object,
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self.credentials = credentials
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gnutls.deinit(self._c_object)
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return gnutls.handshake(self._c_object)
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def send(self, data):
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data_len -= gnutls.record_send(self._c_object,
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return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
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# Error handling functions
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def _error_code(result):
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"""A function to raise exceptions on errors, suitable
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for the 'restype' attribute on ctypes functions"""
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if result == gnutls.E_NO_CERTIFICATE_FOUND:
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raise gnutls.CertificateSecurityError(code=result)
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raise gnutls.Error(code=result)
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def _retry_on_error(result, func, arguments):
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"""A function to retry on some errors, suitable
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for the 'errcheck' attribute on ctypes functions"""
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if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
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return _error_code(result)
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result = func(*arguments)
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# Unless otherwise indicated, the function declarations below are
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# all from the gnutls/gnutls.h C header file.
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priority_set_direct = _library.gnutls_priority_set_direct
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priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
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ctypes.POINTER(ctypes.c_char_p)]
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priority_set_direct.restype = _error_code
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init = _library.gnutls_init
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init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
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init.restype = _error_code
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set_default_priority = _library.gnutls_set_default_priority
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set_default_priority.argtypes = [session_t]
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set_default_priority.restype = _error_code
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record_send = _library.gnutls_record_send
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record_send.argtypes = [session_t, ctypes.c_void_p,
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record_send.restype = ctypes.c_ssize_t
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record_send.errcheck = _retry_on_error
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certificate_allocate_credentials = (
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_library.gnutls_certificate_allocate_credentials)
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certificate_allocate_credentials.argtypes = [
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ctypes.POINTER(certificate_credentials_t)]
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certificate_allocate_credentials.restype = _error_code
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certificate_free_credentials = (
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_library.gnutls_certificate_free_credentials)
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certificate_free_credentials.argtypes = [
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certificate_credentials_t]
678
certificate_free_credentials.restype = None
680
handshake_set_private_extensions = (
681
_library.gnutls_handshake_set_private_extensions)
682
handshake_set_private_extensions.argtypes = [session_t,
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handshake_set_private_extensions.restype = None
686
credentials_set = _library.gnutls_credentials_set
687
credentials_set.argtypes = [session_t, credentials_type_t,
689
credentials_set.restype = _error_code
691
strerror = _library.gnutls_strerror
692
strerror.argtypes = [ctypes.c_int]
693
strerror.restype = ctypes.c_char_p
695
certificate_type_get = _library.gnutls_certificate_type_get
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certificate_type_get.argtypes = [session_t]
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certificate_type_get.restype = _error_code
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certificate_get_peers = _library.gnutls_certificate_get_peers
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certificate_get_peers.argtypes = [session_t,
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ctypes.POINTER(ctypes.c_uint)]
702
certificate_get_peers.restype = ctypes.POINTER(datum_t)
704
global_set_log_level = _library.gnutls_global_set_log_level
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global_set_log_level.argtypes = [ctypes.c_int]
706
global_set_log_level.restype = None
708
global_set_log_function = _library.gnutls_global_set_log_function
709
global_set_log_function.argtypes = [log_func]
710
global_set_log_function.restype = None
712
deinit = _library.gnutls_deinit
713
deinit.argtypes = [session_t]
714
deinit.restype = None
716
handshake = _library.gnutls_handshake
717
handshake.argtypes = [session_t]
718
handshake.restype = _error_code
719
handshake.errcheck = _retry_on_error
721
transport_set_ptr = _library.gnutls_transport_set_ptr
722
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
723
transport_set_ptr.restype = None
725
bye = _library.gnutls_bye
726
bye.argtypes = [session_t, close_request_t]
727
bye.restype = _error_code
728
bye.errcheck = _retry_on_error
730
check_version = _library.gnutls_check_version
731
check_version.argtypes = [ctypes.c_char_p]
732
check_version.restype = ctypes.c_char_p
734
# All the function declarations below are from gnutls/openpgp.h
736
openpgp_crt_init = _library.gnutls_openpgp_crt_init
737
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
738
openpgp_crt_init.restype = _error_code
740
openpgp_crt_import = _library.gnutls_openpgp_crt_import
741
openpgp_crt_import.argtypes = [openpgp_crt_t,
742
ctypes.POINTER(datum_t),
744
openpgp_crt_import.restype = _error_code
746
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
747
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
748
ctypes.POINTER(ctypes.c_uint)]
749
openpgp_crt_verify_self.restype = _error_code
751
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
752
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
753
openpgp_crt_deinit.restype = None
755
openpgp_crt_get_fingerprint = (
756
_library.gnutls_openpgp_crt_get_fingerprint)
757
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
761
openpgp_crt_get_fingerprint.restype = _error_code
763
# Remove non-public functions
764
del _error_code, _retry_on_error
765
# Create the global "gnutls" object, simulating a module
769
def call_pipe(connection, # : multiprocessing.Connection
770
func, *args, **kwargs):
771
"""This function is meant to be called by multiprocessing.Process
773
This function runs func(*args, **kwargs), and writes the resulting
774
return value on the provided multiprocessing.Connection.
776
connection.send(func(*args, **kwargs))
395
def timedelta_to_milliseconds(td):
396
"Convert a datetime.timedelta() to milliseconds"
397
return ((td.days * 24 * 60 * 60 * 1000)
398
+ (td.seconds * 1000)
399
+ (td.microseconds // 1000))
780
402
class Client(object):
781
403
"""A representation of a client host served by this server.
784
406
approved: bool(); 'None' if not yet approved/disapproved
785
407
approval_delay: datetime.timedelta(); Time to wait for approval
820
440
runtime_expansions: Allowed attributes for runtime expansion.
821
441
expires: datetime.datetime(); time (UTC) when a client will be
822
442
disabled, or None
823
server_settings: The server_settings dict from main()
826
445
runtime_expansions = ("approval_delay", "approval_duration",
827
446
"created", "enabled", "expires",
828
447
"fingerprint", "host", "interval",
829
448
"last_approval_request", "last_checked_ok",
830
449
"last_enabled", "name", "timeout")
833
"extended_timeout": "PT15M",
835
"checker": "fping -q -- %%(host)s",
837
"approval_delay": "PT0S",
838
"approval_duration": "PT1S",
839
"approved_by_default": "True",
450
client_defaults = { "timeout": "PT5M",
451
"extended_timeout": "PT15M",
453
"checker": "fping -q -- %%(host)s",
455
"approval_delay": "PT0S",
456
"approval_duration": "PT1S",
457
"approved_by_default": "True",
461
def timeout_milliseconds(self):
462
"Return the 'timeout' attribute in milliseconds"
463
return timedelta_to_milliseconds(self.timeout)
465
def extended_timeout_milliseconds(self):
466
"Return the 'extended_timeout' attribute in milliseconds"
467
return timedelta_to_milliseconds(self.extended_timeout)
469
def interval_milliseconds(self):
470
"Return the 'interval' attribute in milliseconds"
471
return timedelta_to_milliseconds(self.interval)
473
def approval_delay_milliseconds(self):
474
return timedelta_to_milliseconds(self.approval_delay)
844
477
def config_parser(config):
845
478
"""Construct a new dict of client settings of this form:
960
591
logger.info("Disabling client %s", self.name)
961
592
if getattr(self, "disable_initiator_tag", None) is not None:
962
GLib.source_remove(self.disable_initiator_tag)
593
gobject.source_remove(self.disable_initiator_tag)
963
594
self.disable_initiator_tag = None
964
595
self.expires = None
965
596
if getattr(self, "checker_initiator_tag", None) is not None:
966
GLib.source_remove(self.checker_initiator_tag)
597
gobject.source_remove(self.checker_initiator_tag)
967
598
self.checker_initiator_tag = None
968
599
self.stop_checker()
969
600
self.enabled = False
971
602
self.send_changedstate()
972
# Do not run this again if called by a GLib.timeout_add
603
# Do not run this again if called by a gobject.timeout_add
975
606
def __del__(self):
978
609
def init_checker(self):
979
610
# Schedule a new checker to be started an 'interval' from now,
980
611
# and every interval from then on.
981
612
if self.checker_initiator_tag is not None:
982
GLib.source_remove(self.checker_initiator_tag)
983
self.checker_initiator_tag = GLib.timeout_add(
984
int(self.interval.total_seconds() * 1000),
613
gobject.source_remove(self.checker_initiator_tag)
614
self.checker_initiator_tag = (gobject.timeout_add
615
(self.interval_milliseconds(),
986
617
# Schedule a disable() when 'timeout' has passed
987
618
if self.disable_initiator_tag is not None:
988
GLib.source_remove(self.disable_initiator_tag)
989
self.disable_initiator_tag = GLib.timeout_add(
990
int(self.timeout.total_seconds() * 1000), self.disable)
619
gobject.source_remove(self.disable_initiator_tag)
620
self.disable_initiator_tag = (gobject.timeout_add
621
(self.timeout_milliseconds(),
991
623
# Also start a new checker *right now*.
992
624
self.start_checker()
994
def checker_callback(self, source, condition, connection,
626
def checker_callback(self, pid, condition, command):
996
627
"""The checker has completed, so take appropriate actions."""
997
628
self.checker_callback_tag = None
998
629
self.checker = None
999
# Read return code from connection (see call_pipe)
1000
returncode = connection.recv()
1004
self.last_checker_status = returncode
1005
self.last_checker_signal = None
630
if os.WIFEXITED(condition):
631
self.last_checker_status = os.WEXITSTATUS(condition)
1006
632
if self.last_checker_status == 0:
1007
633
logger.info("Checker for %(name)s succeeded",
1009
635
self.checked_ok()
1011
logger.info("Checker for %(name)s failed", vars(self))
637
logger.info("Checker for %(name)s failed",
1013
640
self.last_checker_status = -1
1014
self.last_checker_signal = -returncode
1015
641
logger.warning("Checker for %(name)s crashed?",
1019
644
def checked_ok(self):
1020
645
"""Assert that the client has been seen, alive and well."""
1021
646
self.last_checked_ok = datetime.datetime.utcnow()
1022
647
self.last_checker_status = 0
1023
self.last_checker_signal = None
1024
648
self.bump_timeout()
1026
650
def bump_timeout(self, timeout=None):
1027
651
"""Bump up the timeout for this client."""
1028
652
if timeout is None:
1029
653
timeout = self.timeout
1030
654
if self.disable_initiator_tag is not None:
1031
GLib.source_remove(self.disable_initiator_tag)
655
gobject.source_remove(self.disable_initiator_tag)
1032
656
self.disable_initiator_tag = None
1033
657
if getattr(self, "enabled", False):
1034
self.disable_initiator_tag = GLib.timeout_add(
1035
int(timeout.total_seconds() * 1000), self.disable)
658
self.disable_initiator_tag = (gobject.timeout_add
659
(timedelta_to_milliseconds
660
(timeout), self.disable))
1036
661
self.expires = datetime.datetime.utcnow() + timeout
1038
663
def need_approval(self):
1039
664
self.last_approval_request = datetime.datetime.utcnow()
1041
666
def start_checker(self):
1042
667
"""Start a new checker subprocess if one is not running.
1044
669
If a checker already exists, leave it running and do
1046
671
# The reason for not killing a running checker is that if we
1051
676
# checkers alone, the checker would have to take more time
1052
677
# than 'timeout' for the client to be disabled, which is as it
1055
if self.checker is not None and not self.checker.is_alive():
1056
logger.warning("Checker was not alive; joining")
680
# If a checker exists, make sure it is not a zombie
682
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
683
except (AttributeError, OSError) as error:
684
if (isinstance(error, OSError)
685
and error.errno != errno.ECHILD):
689
logger.warning("Checker was a zombie")
690
gobject.source_remove(self.checker_callback_tag)
691
self.checker_callback(pid, status,
692
self.current_checker_command)
1059
693
# Start a new checker if needed
1060
694
if self.checker is None:
1061
695
# Escape attributes for the shell
1063
attr: re.escape(str(getattr(self, attr)))
1064
for attr in self.runtime_expansions}
696
escaped_attrs = dict(
697
(attr, re.escape(unicode(getattr(self, attr))))
699
self.runtime_expansions)
1066
701
command = self.checker_command % escaped_attrs
1067
702
except TypeError as error:
1068
703
logger.error('Could not format string "%s"',
1069
self.checker_command,
704
self.checker_command, exc_info=error)
705
return True # Try again later
706
self.current_checker_command = command
708
logger.info("Starting checker %r for %s",
710
# We don't need to redirect stdout and stderr, since
711
# in normal mode, that is already done by daemon(),
712
# and in debug mode we don't want to. (Stdin is
713
# always replaced by /dev/null.)
714
self.checker = subprocess.Popen(command,
717
except OSError as error:
718
logger.error("Failed to start subprocess",
1071
return True # Try again later
1072
self.current_checker_command = command
1073
logger.info("Starting checker %r for %s", command,
1075
# We don't need to redirect stdout and stderr, since
1076
# in normal mode, that is already done by daemon(),
1077
# and in debug mode we don't want to. (Stdin is
1078
# always replaced by /dev/null.)
1079
# The exception is when not debugging but nevertheless
1080
# running in the foreground; use the previously
1082
popen_args = {"close_fds": True,
1085
if (not self.server_settings["debug"]
1086
and self.server_settings["foreground"]):
1087
popen_args.update({"stdout": wnull,
1089
pipe = multiprocessing.Pipe(duplex=False)
1090
self.checker = multiprocessing.Process(
1092
args=(pipe[1], subprocess.call, command),
1094
self.checker.start()
1095
self.checker_callback_tag = GLib.io_add_watch(
1096
pipe[0].fileno(), GLib.IO_IN,
1097
self.checker_callback, pipe[0], command)
1098
# Re-run this periodically if run by GLib.timeout_add
720
self.checker_callback_tag = (gobject.child_watch_add
722
self.checker_callback,
724
# The checker may have completed before the gobject
725
# watch was added. Check for this.
726
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
728
gobject.source_remove(self.checker_callback_tag)
729
self.checker_callback(pid, status, command)
730
# Re-run this periodically if run by gobject.timeout_add
1101
733
def stop_checker(self):
1102
734
"""Force the checker process, if any, to stop."""
1103
735
if self.checker_callback_tag:
1104
GLib.source_remove(self.checker_callback_tag)
736
gobject.source_remove(self.checker_callback_tag)
1105
737
self.checker_callback_tag = None
1106
738
if getattr(self, "checker", None) is None:
1108
740
logger.debug("Stopping checker for %(name)s", vars(self))
1109
self.checker.terminate()
742
self.checker.terminate()
744
#if self.checker.poll() is None:
745
# self.checker.kill()
746
except OSError as error:
747
if error.errno != errno.ESRCH: # No such process
1110
749
self.checker = None
1113
def dbus_service_property(dbus_interface,
752
def dbus_service_property(dbus_interface, signature="v",
753
access="readwrite", byte_arrays=False):
1117
754
"""Decorators for marking methods of a DBusObjectWithProperties to
1118
755
become properties on the D-Bus.
1120
757
The decorated method will be called with no arguments by "Get"
1121
758
and with one argument by "Set".
1123
760
The parameters, where they are supported, are the same as
1124
761
dbus.service.method, except there is only "signature", since the
1125
762
type from Get() and the type sent to Set() is the same.
1208
class DBusObjectWithAnnotations(dbus.service.Object):
1209
"""A D-Bus object with annotations.
1211
Classes inheriting from this can use the dbus_annotations
1212
decorator to add annotations to methods or signals.
838
class DBusObjectWithProperties(dbus.service.Object):
839
"""A D-Bus object with properties.
841
Classes inheriting from this can use the dbus_service_property
842
decorator to expose methods as D-Bus properties. It exposes the
843
standard Get(), Set(), and GetAll() methods on the D-Bus.
1216
847
def _is_dbus_thing(thing):
1217
848
"""Returns a function testing if an attribute is a D-Bus thing
1219
850
If called like _is_dbus_thing("method") it returns a function
1220
851
suitable for use as predicate to inspect.getmembers().
1222
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
853
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1225
856
def _get_all_dbus_things(self, thing):
1226
857
"""Returns a generator of (name, attribute) pairs
1228
return ((getattr(athing.__get__(self), "_dbus_name", name),
859
return ((getattr(athing.__get__(self), "_dbus_name",
1229
861
athing.__get__(self))
1230
862
for cls in self.__class__.__mro__
1231
863
for name, athing in
1232
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1234
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1236
path_keyword='object_path',
1237
connection_keyword='connection')
1238
def Introspect(self, object_path, connection):
1239
"""Overloading of standard D-Bus method.
1241
Inserts annotation tags on methods and signals.
1243
xmlstring = dbus.service.Object.Introspect(self, object_path,
1246
document = xml.dom.minidom.parseString(xmlstring)
1248
for if_tag in document.getElementsByTagName("interface"):
1249
# Add annotation tags
1250
for typ in ("method", "signal"):
1251
for tag in if_tag.getElementsByTagName(typ):
1253
for name, prop in (self.
1254
_get_all_dbus_things(typ)):
1255
if (name == tag.getAttribute("name")
1256
and prop._dbus_interface
1257
== if_tag.getAttribute("name")):
1258
annots.update(getattr(
1259
prop, "_dbus_annotations", {}))
1260
for name, value in annots.items():
1261
ann_tag = document.createElement(
1263
ann_tag.setAttribute("name", name)
1264
ann_tag.setAttribute("value", value)
1265
tag.appendChild(ann_tag)
1266
# Add interface annotation tags
1267
for annotation, value in dict(
1268
itertools.chain.from_iterable(
1269
annotations().items()
1270
for name, annotations
1271
in self._get_all_dbus_things("interface")
1272
if name == if_tag.getAttribute("name")
1274
ann_tag = document.createElement("annotation")
1275
ann_tag.setAttribute("name", annotation)
1276
ann_tag.setAttribute("value", value)
1277
if_tag.appendChild(ann_tag)
1278
# Fix argument name for the Introspect method itself
1279
if (if_tag.getAttribute("name")
1280
== dbus.INTROSPECTABLE_IFACE):
1281
for cn in if_tag.getElementsByTagName("method"):
1282
if cn.getAttribute("name") == "Introspect":
1283
for arg in cn.getElementsByTagName("arg"):
1284
if (arg.getAttribute("direction")
1286
arg.setAttribute("name",
1288
xmlstring = document.toxml("utf-8")
1290
except (AttributeError, xml.dom.DOMException,
1291
xml.parsers.expat.ExpatError) as error:
1292
logger.error("Failed to override Introspection method",
1297
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1298
"""A D-Bus object with properties.
1300
Classes inheriting from this can use the dbus_service_property
1301
decorator to expose methods as D-Bus properties. It exposes the
1302
standard Get(), Set(), and GetAll() methods on the D-Bus.
864
inspect.getmembers(cls,
865
self._is_dbus_thing(thing)))
1305
867
def _get_dbus_property(self, interface_name, property_name):
1306
868
"""Returns a bound method if one exists which is a D-Bus
1307
869
property with the specified name and interface.
1309
for cls in self.__class__.__mro__:
1310
for name, value in inspect.getmembers(
1311
cls, self._is_dbus_thing("property")):
871
for cls in self.__class__.__mro__:
872
for name, value in (inspect.getmembers
874
self._is_dbus_thing("property"))):
1312
875
if (value._dbus_name == property_name
1313
876
and value._dbus_interface == interface_name):
1314
877
return value.__get__(self)
1316
879
# No such property
1317
raise DBusPropertyNotFound("{}:{}.{}".format(
1318
self.dbus_object_path, interface_name, property_name))
1321
def _get_all_interface_names(cls):
1322
"""Get a sequence of all interfaces supported by an object"""
1323
return (name for name in set(getattr(getattr(x, attr),
1324
"_dbus_interface", None)
1325
for x in (inspect.getmro(cls))
1327
if name is not None)
1329
@dbus.service.method(dbus.PROPERTIES_IFACE,
880
raise DBusPropertyNotFound(self.dbus_object_path + ":"
881
+ interface_name + "."
884
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1331
885
out_signature="v")
1332
886
def Get(self, interface_name, property_name):
1333
887
"""Standard D-Bus property Get() method, see D-Bus standard.
1462
1017
return xmlstring
1466
dbus.OBJECT_MANAGER_IFACE
1467
except AttributeError:
1468
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1471
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1472
"""A D-Bus object with an ObjectManager.
1474
Classes inheriting from this exposes the standard
1475
GetManagedObjects call and the InterfacesAdded and
1476
InterfacesRemoved signals on the standard
1477
"org.freedesktop.DBus.ObjectManager" interface.
1479
Note: No signals are sent automatically; they must be sent
1482
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1483
out_signature="a{oa{sa{sv}}}")
1484
def GetManagedObjects(self):
1485
"""This function must be overridden"""
1486
raise NotImplementedError()
1488
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1489
signature="oa{sa{sv}}")
1490
def InterfacesAdded(self, object_path, interfaces_and_properties):
1493
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1494
def InterfacesRemoved(self, object_path, interfaces):
1497
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1499
path_keyword='object_path',
1500
connection_keyword='connection')
1501
def Introspect(self, object_path, connection):
1502
"""Overloading of standard D-Bus method.
1504
Override return argument name of GetManagedObjects to be
1505
"objpath_interfaces_and_properties"
1507
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1511
document = xml.dom.minidom.parseString(xmlstring)
1513
for if_tag in document.getElementsByTagName("interface"):
1514
# Fix argument name for the GetManagedObjects method
1515
if (if_tag.getAttribute("name")
1516
== dbus.OBJECT_MANAGER_IFACE):
1517
for cn in if_tag.getElementsByTagName("method"):
1518
if (cn.getAttribute("name")
1519
== "GetManagedObjects"):
1520
for arg in cn.getElementsByTagName("arg"):
1521
if (arg.getAttribute("direction")
1525
"objpath_interfaces"
1527
xmlstring = document.toxml("utf-8")
1529
except (AttributeError, xml.dom.DOMException,
1530
xml.parsers.expat.ExpatError) as error:
1531
logger.error("Failed to override Introspection method",
1536
1020
def datetime_to_dbus(dt, variant_level=0):
1537
1021
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1539
return dbus.String("", variant_level=variant_level)
1540
return dbus.String(dt.isoformat(), variant_level=variant_level)
1023
return dbus.String("", variant_level = variant_level)
1024
return dbus.String(dt.isoformat(),
1025
variant_level=variant_level)
1543
1028
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1574
1058
# Ignore non-D-Bus attributes, and D-Bus attributes
1575
1059
# with the wrong interface name
1576
1060
if (not hasattr(attribute, "_dbus_interface")
1577
or not attribute._dbus_interface.startswith(
1578
orig_interface_name)):
1061
or not attribute._dbus_interface
1062
.startswith(orig_interface_name)):
1580
1064
# Create an alternate D-Bus interface name based on
1581
1065
# the current name
1582
alt_interface = attribute._dbus_interface.replace(
1583
orig_interface_name, alt_interface_name)
1066
alt_interface = (attribute._dbus_interface
1067
.replace(orig_interface_name,
1068
alt_interface_name))
1584
1069
interface_names.add(alt_interface)
1585
1070
# Is this a D-Bus signal?
1586
1071
if getattr(attribute, "_dbus_is_signal", False):
1587
# Extract the original non-method undecorated
1588
# function by black magic
1589
if sys.version_info.major == 2:
1590
nonmethod_func = (dict(
1072
# Extract the original non-method function by
1074
nonmethod_func = (dict(
1591
1075
zip(attribute.func_code.co_freevars,
1592
attribute.__closure__))
1593
["func"].cell_contents)
1595
nonmethod_func = (dict(
1596
zip(attribute.__code__.co_freevars,
1597
attribute.__closure__))
1598
["func"].cell_contents)
1076
attribute.__closure__))["func"]
1599
1078
# Create a new, but exactly alike, function
1600
1079
# object, and decorate it to be a new D-Bus signal
1601
1080
# with the alternate D-Bus interface name
1602
new_function = copy_function(nonmethod_func)
1603
new_function = (dbus.service.signal(
1605
attribute._dbus_signature)(new_function))
1081
new_function = (dbus.service.signal
1083
attribute._dbus_signature)
1084
(types.FunctionType(
1085
nonmethod_func.func_code,
1086
nonmethod_func.func_globals,
1087
nonmethod_func.func_name,
1088
nonmethod_func.func_defaults,
1089
nonmethod_func.func_closure)))
1606
1090
# Copy annotations, if any
1608
new_function._dbus_annotations = dict(
1609
attribute._dbus_annotations)
1092
new_function._dbus_annotations = (
1093
dict(attribute._dbus_annotations))
1610
1094
except AttributeError:
1613
1096
# Define a creator of a function to call both the
1614
1097
# original and alternate functions, so both the
1615
1098
# original and alternate signals gets sent when
1698
1188
if interface_names:
1699
1189
# Replace the class with a new subclass of it with
1700
1190
# methods, signals, etc. as created above.
1701
if sys.version_info.major == 2:
1702
cls = type(b"{}Alternate".format(cls.__name__),
1705
cls = type("{}Alternate".format(cls.__name__),
1191
cls = type(b"{0}Alternate".format(cls.__name__),
1712
1197
@alternate_dbus_interfaces({"se.recompile.Mandos":
1713
"se.bsnet.fukt.Mandos"})
1198
"se.bsnet.fukt.Mandos"})
1714
1199
class ClientDBus(Client, DBusObjectWithProperties):
1715
1200
"""A Client class using D-Bus
1718
1203
dbus_object_path: dbus.ObjectPath
1719
1204
bus: dbus.SystemBus()
1722
1207
runtime_expansions = (Client.runtime_expansions
1723
+ ("dbus_object_path", ))
1725
_interface = "se.recompile.Mandos.Client"
1208
+ ("dbus_object_path",))
1727
1210
# dbus.service.Object doesn't use super(), so we can't either.
1729
def __init__(self, bus=None, *args, **kwargs):
1212
def __init__(self, bus = None, *args, **kwargs):
1731
1214
Client.__init__(self, *args, **kwargs)
1732
1215
# Only now, when this client is initialized, can it show up on
1734
client_object_name = str(self.name).translate(
1217
client_object_name = unicode(self.name).translate(
1735
1218
{ord("."): ord("_"),
1736
1219
ord("-"): ord("_")})
1737
self.dbus_object_path = dbus.ObjectPath(
1738
"/clients/" + client_object_name)
1220
self.dbus_object_path = (dbus.ObjectPath
1221
("/clients/" + client_object_name))
1739
1222
DBusObjectWithProperties.__init__(self, self.bus,
1740
1223
self.dbus_object_path)
1742
def notifychangeproperty(transform_func, dbus_name,
1743
type_func=lambda x: x,
1745
invalidate_only=False,
1746
_interface=_interface):
1225
def notifychangeproperty(transform_func,
1226
dbus_name, type_func=lambda x: x,
1747
1228
""" Modify a variable so that it's a property which announces
1748
1229
its changes to DBus.
1750
1231
transform_fun: Function that takes a value and a variant_level
1751
1232
and transforms it to a D-Bus type.
1752
1233
dbus_name: D-Bus name of the variable
1828
1298
if hasattr(DBusObjectWithProperties, "__del__"):
1829
1299
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1830
1300
Client.__del__(self, *args, **kwargs)
1832
def checker_callback(self, source, condition,
1833
connection, command, *args, **kwargs):
1834
ret = Client.checker_callback(self, source, condition,
1835
connection, command, *args,
1837
exitstatus = self.last_checker_status
1302
def checker_callback(self, pid, condition, command,
1304
self.checker_callback_tag = None
1306
if os.WIFEXITED(condition):
1307
exitstatus = os.WEXITSTATUS(condition)
1839
1308
# Emit D-Bus signal
1840
1309
self.CheckerCompleted(dbus.Int16(exitstatus),
1841
# This is specific to GNU libC
1842
dbus.Int64(exitstatus << 8),
1310
dbus.Int64(condition),
1843
1311
dbus.String(command))
1845
1313
# Emit D-Bus signal
1846
1314
self.CheckerCompleted(dbus.Int16(-1),
1848
# This is specific to GNU libC
1850
| self.last_checker_signal),
1315
dbus.Int64(condition),
1851
1316
dbus.String(command))
1318
return Client.checker_callback(self, pid, condition, command,
1854
1321
def start_checker(self, *args, **kwargs):
1855
old_checker_pid = getattr(self.checker, "pid", None)
1322
old_checker = self.checker
1323
if self.checker is not None:
1324
old_checker_pid = self.checker.pid
1326
old_checker_pid = None
1856
1327
r = Client.start_checker(self, *args, **kwargs)
1857
1328
# Only if new checker process was started
1858
1329
if (self.checker is not None
1904
1381
server to mandos-client
1908
1385
# Rejected - signal
1909
1386
@dbus.service.signal(_interface, signature="s")
1910
1387
def Rejected(self, reason):
1914
1391
# NeedApproval - signal
1915
1392
@dbus.service.signal(_interface, signature="tb")
1916
1393
def NeedApproval(self, timeout, default):
1918
1395
return self.need_approval()
1922
1399
# Approve - method
1923
1400
@dbus.service.method(_interface, in_signature="b")
1924
1401
def Approve(self, value):
1925
1402
self.approve(value)
1927
1404
# CheckedOK - method
1928
1405
@dbus.service.method(_interface)
1929
1406
def CheckedOK(self):
1930
1407
self.checked_ok()
1932
1409
# Enable - method
1933
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1934
1410
@dbus.service.method(_interface)
1935
1411
def Enable(self):
1939
1415
# StartChecker - method
1940
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1941
1416
@dbus.service.method(_interface)
1942
1417
def StartChecker(self):
1944
1419
self.start_checker()
1946
1421
# Disable - method
1947
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1948
1422
@dbus.service.method(_interface)
1949
1423
def Disable(self):
1953
1427
# StopChecker - method
1954
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1955
1428
@dbus.service.method(_interface)
1956
1429
def StopChecker(self):
1957
1430
self.stop_checker()
1961
1434
# ApprovalPending - property
1962
1435
@dbus_service_property(_interface, signature="b", access="read")
1963
1436
def ApprovalPending_dbus_property(self):
1964
1437
return dbus.Boolean(bool(self.approvals_pending))
1966
1439
# ApprovedByDefault - property
1967
@dbus_service_property(_interface,
1440
@dbus_service_property(_interface, signature="b",
1969
1441
access="readwrite")
1970
1442
def ApprovedByDefault_dbus_property(self, value=None):
1971
1443
if value is None: # get
1972
1444
return dbus.Boolean(self.approved_by_default)
1973
1445
self.approved_by_default = bool(value)
1975
1447
# ApprovalDelay - property
1976
@dbus_service_property(_interface,
1448
@dbus_service_property(_interface, signature="t",
1978
1449
access="readwrite")
1979
1450
def ApprovalDelay_dbus_property(self, value=None):
1980
1451
if value is None: # get
1981
return dbus.UInt64(self.approval_delay.total_seconds()
1452
return dbus.UInt64(self.approval_delay_milliseconds())
1983
1453
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1985
1455
# ApprovalDuration - property
1986
@dbus_service_property(_interface,
1456
@dbus_service_property(_interface, signature="t",
1988
1457
access="readwrite")
1989
1458
def ApprovalDuration_dbus_property(self, value=None):
1990
1459
if value is None: # get
1991
return dbus.UInt64(self.approval_duration.total_seconds()
1460
return dbus.UInt64(timedelta_to_milliseconds(
1461
self.approval_duration))
1993
1462
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1995
1464
# Name - property
1997
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1998
1465
@dbus_service_property(_interface, signature="s", access="read")
1999
1466
def Name_dbus_property(self):
2000
1467
return dbus.String(self.name)
2002
1469
# Fingerprint - property
2004
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2005
1470
@dbus_service_property(_interface, signature="s", access="read")
2006
1471
def Fingerprint_dbus_property(self):
2007
1472
return dbus.String(self.fingerprint)
2009
1474
# Host - property
2010
@dbus_service_property(_interface,
1475
@dbus_service_property(_interface, signature="s",
2012
1476
access="readwrite")
2013
1477
def Host_dbus_property(self, value=None):
2014
1478
if value is None: # get
2015
1479
return dbus.String(self.host)
2016
self.host = str(value)
1480
self.host = unicode(value)
2018
1482
# Created - property
2020
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2021
1483
@dbus_service_property(_interface, signature="s", access="read")
2022
1484
def Created_dbus_property(self):
2023
1485
return datetime_to_dbus(self.created)
2025
1487
# LastEnabled - property
2026
1488
@dbus_service_property(_interface, signature="s", access="read")
2027
1489
def LastEnabled_dbus_property(self):
2028
1490
return datetime_to_dbus(self.last_enabled)
2030
1492
# Enabled - property
2031
@dbus_service_property(_interface,
1493
@dbus_service_property(_interface, signature="b",
2033
1494
access="readwrite")
2034
1495
def Enabled_dbus_property(self, value=None):
2035
1496
if value is None: # get
2084
1544
if (getattr(self, "disable_initiator_tag", None)
2087
GLib.source_remove(self.disable_initiator_tag)
2088
self.disable_initiator_tag = GLib.timeout_add(
2089
int((self.expires - now).total_seconds() * 1000),
1547
gobject.source_remove(self.disable_initiator_tag)
1548
self.disable_initiator_tag = (
1549
gobject.timeout_add(
1550
timedelta_to_milliseconds(self.expires - now),
2092
1553
# ExtendedTimeout - property
2093
@dbus_service_property(_interface,
1554
@dbus_service_property(_interface, signature="t",
2095
1555
access="readwrite")
2096
1556
def ExtendedTimeout_dbus_property(self, value=None):
2097
1557
if value is None: # get
2098
return dbus.UInt64(self.extended_timeout.total_seconds()
1558
return dbus.UInt64(self.extended_timeout_milliseconds())
2100
1559
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2102
1561
# Interval - property
2103
@dbus_service_property(_interface,
1562
@dbus_service_property(_interface, signature="t",
2105
1563
access="readwrite")
2106
1564
def Interval_dbus_property(self, value=None):
2107
1565
if value is None: # get
2108
return dbus.UInt64(self.interval.total_seconds() * 1000)
1566
return dbus.UInt64(self.interval_milliseconds())
2109
1567
self.interval = datetime.timedelta(0, 0, 0, value)
2110
1568
if getattr(self, "checker_initiator_tag", None) is None:
2112
1570
if self.enabled:
2113
1571
# Reschedule checker run
2114
GLib.source_remove(self.checker_initiator_tag)
2115
self.checker_initiator_tag = GLib.timeout_add(
2116
value, self.start_checker)
2117
self.start_checker() # Start one now, too
1572
gobject.source_remove(self.checker_initiator_tag)
1573
self.checker_initiator_tag = (gobject.timeout_add
1574
(value, self.start_checker))
1575
self.start_checker() # Start one now, too
2119
1577
# Checker - property
2120
@dbus_service_property(_interface,
1578
@dbus_service_property(_interface, signature="s",
2122
1579
access="readwrite")
2123
1580
def Checker_dbus_property(self, value=None):
2124
1581
if value is None: # get
2125
1582
return dbus.String(self.checker_command)
2126
self.checker_command = str(value)
1583
self.checker_command = unicode(value)
2128
1585
# CheckerRunning - property
2129
@dbus_service_property(_interface,
1586
@dbus_service_property(_interface, signature="b",
2131
1587
access="readwrite")
2132
1588
def CheckerRunning_dbus_property(self, value=None):
2133
1589
if value is None: # get
2190
1636
class ClientHandler(socketserver.BaseRequestHandler, object):
2191
1637
"""A class to handle client connections.
2193
1639
Instantiated once for each connection to handle it.
2194
1640
Note: This will run in its own forked process."""
2196
1642
def handle(self):
2197
1643
with contextlib.closing(self.server.child_pipe) as child_pipe:
2198
1644
logger.info("TCP connection from: %s",
2199
str(self.client_address))
1645
unicode(self.client_address))
2200
1646
logger.debug("Pipe FD: %d",
2201
1647
self.server.child_pipe.fileno())
2203
session = gnutls.ClientSession(self.request)
2205
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2206
# "+AES-256-CBC", "+SHA1",
2207
# "+COMP-NULL", "+CTYPE-OPENPGP",
1649
session = (gnutls.connection
1650
.ClientSession(self.request,
1652
.X509Credentials()))
1654
# Note: gnutls.connection.X509Credentials is really a
1655
# generic GnuTLS certificate credentials object so long as
1656
# no X.509 keys are added to it. Therefore, we can use it
1657
# here despite using OpenPGP certificates.
1659
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1660
# "+AES-256-CBC", "+SHA1",
1661
# "+COMP-NULL", "+CTYPE-OPENPGP",
2209
1663
# Use a fallback default, since this MUST be set.
2210
1664
priority = self.server.gnutls_priority
2211
1665
if priority is None:
2212
1666
priority = "NORMAL"
2213
gnutls.priority_set_direct(session._c_object,
2214
priority.encode("utf-8"),
1667
(gnutls.library.functions
1668
.gnutls_priority_set_direct(session._c_object,
2217
1671
# Start communication using the Mandos protocol
2218
1672
# Get protocol number
2219
1673
line = self.request.makefile().readline()
2220
1674
logger.debug("Protocol version: %r", line)
2222
1676
if int(line.strip().split()[0]) > 1:
2223
raise RuntimeError(line)
2224
1678
except (ValueError, IndexError, RuntimeError) as error:
2225
1679
logger.error("Unknown protocol version: %s", error)
2228
1682
# Start GnuTLS connection
2230
1684
session.handshake()
2231
except gnutls.Error as error:
1685
except gnutls.errors.GNUTLSError as error:
2232
1686
logger.warning("Handshake failed: %s", error)
2233
1687
# Do not run session.bye() here: the session is not
2234
1688
# established. Just abandon the request.
2236
1690
logger.debug("Handshake succeeded")
2238
1692
approval_required = False
2241
fpr = self.fingerprint(
2242
self.peer_certificate(session))
2243
except (TypeError, gnutls.Error) as error:
1695
fpr = self.fingerprint(self.peer_certificate
1698
gnutls.errors.GNUTLSError) as error:
2244
1699
logger.warning("Bad certificate: %s", error)
2246
1701
logger.debug("Fingerprint: %s", fpr)
2249
1704
client = ProxyClient(child_pipe, fpr,
2250
1705
self.client_address)
2251
1706
except KeyError:
2254
1709
if client.approval_delay:
2255
1710
delay = client.approval_delay
2256
1711
client.approvals_pending += 1
2257
1712
approval_required = True
2260
1715
if not client.enabled:
2261
1716
logger.info("Client %s is disabled",
2263
1718
if self.server.use_dbus:
2264
1719
# Emit D-Bus signal
2265
1720
client.Rejected("Disabled")
2268
1723
if client.approved or not client.approval_delay:
2269
# We are approved or approval is disabled
1724
#We are approved or approval is disabled
2271
1726
elif client.approved is None:
2272
1727
logger.info("Client %s needs approval",
2305
1762
delay -= time2 - time
2308
session.send(client.secret)
2309
except gnutls.Error as error:
2310
logger.warning("gnutls send failed",
1765
while sent_size < len(client.secret):
1767
sent = session.send(client.secret[sent_size:])
1768
except gnutls.errors.GNUTLSError as error:
1769
logger.warning("gnutls send failed",
1772
logger.debug("Sent: %d, remaining: %d",
1773
sent, len(client.secret)
1774
- (sent_size + sent))
2314
1777
logger.info("Sending secret to %s", client.name)
2315
1778
# bump the timeout using extended_timeout
2316
1779
client.bump_timeout(client.extended_timeout)
2317
1780
if self.server.use_dbus:
2318
1781
# Emit D-Bus signal
2319
1782
client.GotSecret()
2322
1785
if approval_required:
2323
1786
client.approvals_pending -= 1
2326
except gnutls.Error as error:
1789
except gnutls.errors.GNUTLSError as error:
2327
1790
logger.warning("GnuTLS bye failed",
2328
1791
exc_info=error)
2331
1794
def peer_certificate(session):
2332
1795
"Return the peer's OpenPGP certificate as a bytestring"
2333
1796
# If not an OpenPGP certificate...
2334
if (gnutls.certificate_type_get(session._c_object)
2335
!= gnutls.CRT_OPENPGP):
2336
# ...return invalid data
1797
if (gnutls.library.functions
1798
.gnutls_certificate_type_get(session._c_object)
1799
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1800
# ...do the normal thing
1801
return session.peer_certificate
2338
1802
list_size = ctypes.c_uint(1)
2339
cert_list = (gnutls.certificate_get_peers
1803
cert_list = (gnutls.library.functions
1804
.gnutls_certificate_get_peers
2340
1805
(session._c_object, ctypes.byref(list_size)))
2341
1806
if not bool(cert_list) and list_size.value != 0:
2342
raise gnutls.Error("error getting peer certificate")
1807
raise gnutls.errors.GNUTLSError("error getting peer"
2343
1809
if list_size.value == 0:
2345
1811
cert = cert_list[0]
2346
1812
return ctypes.string_at(cert.data, cert.size)
2349
1815
def fingerprint(openpgp):
2350
1816
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2351
1817
# New GnuTLS "datum" with the OpenPGP public key
2352
datum = gnutls.datum_t(
2353
ctypes.cast(ctypes.c_char_p(openpgp),
2354
ctypes.POINTER(ctypes.c_ubyte)),
2355
ctypes.c_uint(len(openpgp)))
1818
datum = (gnutls.library.types
1819
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1822
ctypes.c_uint(len(openpgp))))
2356
1823
# New empty GnuTLS certificate
2357
crt = gnutls.openpgp_crt_t()
2358
gnutls.openpgp_crt_init(ctypes.byref(crt))
1824
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1825
(gnutls.library.functions
1826
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2359
1827
# Import the OpenPGP public key into the certificate
2360
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2361
gnutls.OPENPGP_FMT_RAW)
1828
(gnutls.library.functions
1829
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1830
gnutls.library.constants
1831
.GNUTLS_OPENPGP_FMT_RAW))
2362
1832
# Verify the self signature in the key
2363
1833
crtverify = ctypes.c_uint()
2364
gnutls.openpgp_crt_verify_self(crt, 0,
2365
ctypes.byref(crtverify))
1834
(gnutls.library.functions
1835
.gnutls_openpgp_crt_verify_self(crt, 0,
1836
ctypes.byref(crtverify)))
2366
1837
if crtverify.value != 0:
2367
gnutls.openpgp_crt_deinit(crt)
2368
raise gnutls.CertificateSecurityError("Verify failed")
1838
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1839
raise (gnutls.errors.CertificateSecurityError
2369
1841
# New buffer for the fingerprint
2370
1842
buf = ctypes.create_string_buffer(20)
2371
1843
buf_len = ctypes.c_size_t()
2372
1844
# Get the fingerprint from the certificate into the buffer
2373
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2374
ctypes.byref(buf_len))
1845
(gnutls.library.functions
1846
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1847
ctypes.byref(buf_len)))
2375
1848
# Deinit the certificate
2376
gnutls.openpgp_crt_deinit(crt)
1849
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2377
1850
# Convert the buffer to a Python bytestring
2378
1851
fpr = ctypes.string_at(buf, buf_len.value)
2379
1852
# Convert the bytestring to hexadecimal notation
2384
1857
class MultiprocessingMixIn(object):
2385
1858
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2387
1859
def sub_process_main(self, request, address):
2389
1861
self.finish_request(request, address)
2390
1862
except Exception:
2391
1863
self.handle_error(request, address)
2392
1864
self.close_request(request)
2394
1866
def process_request(self, request, address):
2395
1867
"""Start a new process to process the request."""
2396
proc = multiprocessing.Process(target=self.sub_process_main,
2397
args=(request, address))
1868
proc = multiprocessing.Process(target = self.sub_process_main,
1869
args = (request, address))
2402
1874
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2403
1875
""" adds a pipe to the MixIn """
2405
1876
def process_request(self, request, client_address):
2406
1877
"""Overrides and wraps the original process_request().
2408
1879
This function creates a new pipe in self.pipe
2410
1881
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2412
1883
proc = MultiprocessingMixIn.process_request(self, request,
2413
1884
client_address)
2414
1885
self.child_pipe.close()
2415
1886
self.add_pipe(parent_pipe, proc)
2417
1888
def add_pipe(self, parent_pipe, proc):
2418
1889
"""Dummy function; override as necessary"""
2419
raise NotImplementedError()
1890
raise NotImplementedError
2422
1893
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2423
1894
socketserver.TCPServer, object):
2424
1895
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2427
1898
enabled: Boolean; whether this server is activated yet
2428
1899
interface: None or a network interface name (string)
2429
1900
use_ipv6: Boolean; to use IPv6 or not
2432
1902
def __init__(self, server_address, RequestHandlerClass,
1903
interface=None, use_ipv6=True, socketfd=None):
2436
1904
"""If socketfd is set, use that file descriptor instead of
2437
1905
creating a new one with socket.socket().
2468
1935
# socket_wrapper(), if socketfd was set.
2469
1936
socketserver.TCPServer.__init__(self, server_address,
2470
1937
RequestHandlerClass)
2472
1939
def server_bind(self):
2473
1940
"""This overrides the normal server_bind() function
2474
1941
to bind to an interface if one was specified, and also NOT to
2475
1942
bind to an address or port if they were not specified."""
2476
global SO_BINDTODEVICE
2477
1943
if self.interface is not None:
2478
1944
if SO_BINDTODEVICE is None:
2479
# Fall back to a hard-coded value which seems to be
2481
logger.warning("SO_BINDTODEVICE not found, trying 25")
2482
SO_BINDTODEVICE = 25
2484
self.socket.setsockopt(
2485
socket.SOL_SOCKET, SO_BINDTODEVICE,
2486
(self.interface + "\0").encode("utf-8"))
2487
except socket.error as error:
2488
if error.errno == errno.EPERM:
2489
logger.error("No permission to bind to"
2490
" interface %s", self.interface)
2491
elif error.errno == errno.ENOPROTOOPT:
2492
logger.error("SO_BINDTODEVICE not available;"
2493
" cannot bind to interface %s",
2495
elif error.errno == errno.ENODEV:
2496
logger.error("Interface %s does not exist,"
2497
" cannot bind", self.interface)
1945
logger.error("SO_BINDTODEVICE does not exist;"
1946
" cannot bind to interface %s",
1950
self.socket.setsockopt(socket.SOL_SOCKET,
1952
str(self.interface + '\0'))
1953
except socket.error as error:
1954
if error.errno == errno.EPERM:
1955
logger.error("No permission to bind to"
1956
" interface %s", self.interface)
1957
elif error.errno == errno.ENOPROTOOPT:
1958
logger.error("SO_BINDTODEVICE not available;"
1959
" cannot bind to interface %s",
1961
elif error.errno == errno.ENODEV:
1962
logger.error("Interface %s does not exist,"
1963
" cannot bind", self.interface)
2500
1966
# Only bind(2) the socket if we really need to.
2501
1967
if self.server_address[0] or self.server_address[1]:
2502
1968
if not self.server_address[0]:
2503
1969
if self.address_family == socket.AF_INET6:
2504
any_address = "::" # in6addr_any
1970
any_address = "::" # in6addr_any
2506
any_address = "0.0.0.0" # INADDR_ANY
1972
any_address = socket.INADDR_ANY
2507
1973
self.server_address = (any_address,
2508
1974
self.server_address[1])
2509
1975
elif not self.server_address[1]:
2510
self.server_address = (self.server_address[0], 0)
1976
self.server_address = (self.server_address[0],
2511
1978
# if self.interface:
2512
1979
# self.server_address = (self.server_address[0],
2834
2294
parser.add_argument("--no-dbus", action="store_false",
2835
2295
dest="use_dbus", help="Do not provide D-Bus"
2836
" system bus interface", default=None)
2296
" system bus interface")
2837
2297
parser.add_argument("--no-ipv6", action="store_false",
2838
dest="use_ipv6", help="Do not use IPv6",
2298
dest="use_ipv6", help="Do not use IPv6")
2840
2299
parser.add_argument("--no-restore", action="store_false",
2841
2300
dest="restore", help="Do not restore stored"
2842
" state", default=None)
2843
2302
parser.add_argument("--socket", type=int,
2844
2303
help="Specify a file descriptor to a network"
2845
2304
" socket to use instead of creating one")
2846
2305
parser.add_argument("--statedir", metavar="DIR",
2847
2306
help="Directory to save/restore state in")
2848
2307
parser.add_argument("--foreground", action="store_true",
2849
help="Run in foreground", default=None)
2850
parser.add_argument("--no-zeroconf", action="store_false",
2851
dest="zeroconf", help="Do not use Zeroconf",
2308
help="Run in foreground")
2854
2310
options = parser.parse_args()
2856
2312
if options.check:
2858
fail_count, test_count = doctest.testmod()
2859
sys.exit(os.EX_OK if fail_count == 0 else 1)
2861
2317
# Default values for config file for server-global settings
2862
server_defaults = {"interface": "",
2867
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2868
":+SIGN-DSA-SHA256",
2869
"servicename": "Mandos",
2875
"statedir": "/var/lib/mandos",
2876
"foreground": "False",
2318
server_defaults = { "interface": "",
2323
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2324
"servicename": "Mandos",
2330
"statedir": "/var/lib/mandos",
2331
"foreground": "False",
2880
2334
# Parse config file for server-global settings
2881
2335
server_config = configparser.SafeConfigParser(server_defaults)
2882
2336
del server_defaults
2883
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2337
server_config.read(os.path.join(options.configdir,
2884
2339
# Convert the SafeConfigParser object to a dict
2885
2340
server_settings = server_config.defaults()
2886
2341
# Use the appropriate methods on the non-string config options
2887
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2888
"foreground", "zeroconf"):
2342
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2889
2343
server_settings[option] = server_config.getboolean("DEFAULT",
2891
2345
if server_settings["port"]:
2901
2355
server_settings["socket"] = os.dup(server_settings
2903
2357
del server_config
2905
2359
# Override the settings from the config file with command line
2906
2360
# options, if set.
2907
2361
for option in ("interface", "address", "port", "debug",
2908
"priority", "servicename", "configdir", "use_dbus",
2909
"use_ipv6", "debuglevel", "restore", "statedir",
2910
"socket", "foreground", "zeroconf"):
2362
"priority", "servicename", "configdir",
2363
"use_dbus", "use_ipv6", "debuglevel", "restore",
2364
"statedir", "socket", "foreground"):
2911
2365
value = getattr(options, option)
2912
2366
if value is not None:
2913
2367
server_settings[option] = value
2915
2369
# Force all strings to be unicode
2916
2370
for option in server_settings.keys():
2917
if isinstance(server_settings[option], bytes):
2918
server_settings[option] = (server_settings[option]
2920
# Force all boolean options to be boolean
2921
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2922
"foreground", "zeroconf"):
2923
server_settings[option] = bool(server_settings[option])
2371
if type(server_settings[option]) is str:
2372
server_settings[option] = unicode(server_settings[option])
2924
2373
# Debug implies foreground
2925
2374
if server_settings["debug"]:
2926
2375
server_settings["foreground"] = True
2927
2376
# Now we have our good server settings in "server_settings"
2929
2378
##################################################################
2931
if (not server_settings["zeroconf"]
2932
and not (server_settings["port"]
2933
or server_settings["socket"] != "")):
2934
parser.error("Needs port or socket to work without Zeroconf")
2936
2380
# For convenience
2937
2381
debug = server_settings["debug"]
2938
2382
debuglevel = server_settings["debuglevel"]
2952
2395
level = getattr(logging, debuglevel.upper())
2953
2396
initlogger(debug, level)
2955
2398
if server_settings["servicename"] != "Mandos":
2956
syslogger.setFormatter(
2957
logging.Formatter('Mandos ({}) [%(process)d]:'
2958
' %(levelname)s: %(message)s'.format(
2959
server_settings["servicename"])))
2399
syslogger.setFormatter(logging.Formatter
2400
('Mandos ({0}) [%(process)d]:'
2401
' %(levelname)s: %(message)s'
2402
.format(server_settings
2961
2405
# Parse config file with clients
2962
2406
client_config = configparser.SafeConfigParser(Client
2963
2407
.client_defaults)
2964
2408
client_config.read(os.path.join(server_settings["configdir"],
2965
2409
"clients.conf"))
2967
2411
global mandos_dbus_service
2968
2412
mandos_dbus_service = None
2971
if server_settings["socket"] != "":
2972
socketfd = server_settings["socket"]
2973
tcp_server = MandosServer(
2974
(server_settings["address"], server_settings["port"]),
2976
interface=(server_settings["interface"] or None),
2978
gnutls_priority=server_settings["priority"],
2414
tcp_server = MandosServer((server_settings["address"],
2415
server_settings["port"]),
2417
interface=(server_settings["interface"]
2421
server_settings["priority"],
2423
socketfd=(server_settings["socket"]
2981
2425
if not foreground:
2982
pidfilename = "/run/mandos.pid"
2983
if not os.path.isdir("/run/."):
2984
pidfilename = "/var/run/mandos.pid"
2426
pidfilename = "/var/run/mandos.pid"
2987
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2429
pidfile = open(pidfilename, "w")
2988
2430
except IOError as e:
2989
2431
logger.error("Could not open file %r", pidfilename,
2992
for name, group in (("_mandos", "_mandos"),
2993
("mandos", "mandos"),
2994
("nobody", "nogroup")):
2434
for name in ("_mandos", "mandos", "nobody"):
2996
2436
uid = pwd.getpwnam(name).pw_uid
2997
gid = pwd.getpwnam(group).pw_gid
2437
gid = pwd.getpwnam(name).pw_gid
2999
2439
except KeyError:
3008
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3010
2447
except OSError as error:
3011
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3012
.format(uid, gid, os.strerror(error.errno)))
3013
2448
if error.errno != errno.EPERM:
3017
2452
# Enable all possible GnuTLS debugging
3019
2454
# "Use a log level over 10 to enable all debugging options."
3020
2455
# - GnuTLS manual
3021
gnutls.global_set_log_level(11)
2456
gnutls.library.functions.gnutls_global_set_log_level(11)
2458
@gnutls.library.types.gnutls_log_func
3024
2459
def debug_gnutls(level, string):
3025
2460
logger.debug("GnuTLS: %s", string[:-1])
3027
gnutls.global_set_log_function(debug_gnutls)
2462
(gnutls.library.functions
2463
.gnutls_global_set_log_function(debug_gnutls))
3029
2465
# Redirect stdin so all checkers get /dev/null
3030
2466
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3031
2467
os.dup2(null, sys.stdin.fileno())
3035
2471
# Need to fork before connecting to D-Bus
3036
2472
if not foreground:
3037
2473
# Close all input and output, do double fork, etc.
3040
# multiprocessing will use threads, so before we use GLib we need
3041
# to inform GLib that threads will be used.
2476
# multiprocessing will use threads, so before we use gobject we
2477
# need to inform gobject that threads will be used.
2478
gobject.threads_init()
3044
2480
global main_loop
3045
2481
# From the Avahi example code
3046
2482
DBusGMainLoop(set_as_default=True)
3047
main_loop = GLib.MainLoop()
2483
main_loop = gobject.MainLoop()
3048
2484
bus = dbus.SystemBus()
3049
2485
# End of Avahi example code
3052
2488
bus_name = dbus.service.BusName("se.recompile.Mandos",
3055
old_bus_name = dbus.service.BusName(
3056
"se.bsnet.fukt.Mandos", bus,
3058
except dbus.exceptions.DBusException as e:
2489
bus, do_not_queue=True)
2490
old_bus_name = (dbus.service.BusName
2491
("se.bsnet.fukt.Mandos", bus,
2493
except dbus.exceptions.NameExistsException as e:
3059
2494
logger.error("Disabling D-Bus:", exc_info=e)
3060
2495
use_dbus = False
3061
2496
server_settings["use_dbus"] = False
3062
2497
tcp_server.use_dbus = False
3064
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3065
service = AvahiServiceToSyslog(
3066
name=server_settings["servicename"],
3067
servicetype="_mandos._tcp",
3070
if server_settings["interface"]:
3071
service.interface = if_nametoindex(
3072
server_settings["interface"].encode("utf-8"))
2498
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2499
service = AvahiServiceToSyslog(name =
2500
server_settings["servicename"],
2501
servicetype = "_mandos._tcp",
2502
protocol = protocol, bus = bus)
2503
if server_settings["interface"]:
2504
service.interface = (if_nametoindex
2505
(str(server_settings["interface"])))
3074
2507
global multiprocessing_manager
3075
2508
multiprocessing_manager = multiprocessing.Manager()
3077
2510
client_class = Client
3079
client_class = functools.partial(ClientDBus, bus=bus)
2512
client_class = functools.partial(ClientDBus, bus = bus)
3081
2514
client_settings = Client.config_parser(client_config)
3082
2515
old_client_settings = {}
3083
2516
clients_data = {}
3085
# This is used to redirect stdout and stderr for checker processes
3087
wnull = open(os.devnull, "w") # A writable /dev/null
3088
# Only used if server is running in foreground but not in debug
3090
if debug or not foreground:
3093
2518
# Get client data and settings from last running state.
3094
2519
if server_settings["restore"]:
3096
2521
with open(stored_state_path, "rb") as stored_state:
3097
if sys.version_info.major == 2:
3098
clients_data, old_client_settings = pickle.load(
3101
bytes_clients_data, bytes_old_client_settings = (
3102
pickle.load(stored_state, encoding="bytes"))
3103
# Fix bytes to strings
3106
clients_data = {(key.decode("utf-8")
3107
if isinstance(key, bytes)
3110
bytes_clients_data.items()}
3111
del bytes_clients_data
3112
for key in clients_data:
3113
value = {(k.decode("utf-8")
3114
if isinstance(k, bytes) else k): v
3116
clients_data[key].items()}
3117
clients_data[key] = value
3119
value["client_structure"] = [
3121
if isinstance(s, bytes)
3123
value["client_structure"]]
3125
for k in ("name", "host"):
3126
if isinstance(value[k], bytes):
3127
value[k] = value[k].decode("utf-8")
3128
# old_client_settings
3130
old_client_settings = {
3131
(key.decode("utf-8")
3132
if isinstance(key, bytes)
3135
bytes_old_client_settings.items()}
3136
del bytes_old_client_settings
3138
for value in old_client_settings.values():
3139
if isinstance(value["host"], bytes):
3140
value["host"] = (value["host"]
2522
clients_data, old_client_settings = (pickle.load
3142
2524
os.remove(stored_state_path)
3143
2525
except IOError as e:
3144
2526
if e.errno == errno.ENOENT:
3145
logger.warning("Could not load persistent state:"
3146
" {}".format(os.strerror(e.errno)))
2527
logger.warning("Could not load persistent state: {0}"
2528
.format(os.strerror(e.errno)))
3148
2530
logger.critical("Could not load persistent state:",
3151
2533
except EOFError as e:
3152
2534
logger.warning("Could not load persistent state: "
2535
"EOFError:", exc_info=e)
3156
2537
with PGPEngine() as pgp:
3157
for client_name, client in clients_data.items():
3158
# Skip removed clients
3159
if client_name not in client_settings:
2538
for client_name, client in clients_data.iteritems():
3162
2539
# Decide which value to use after restoring saved state.
3163
2540
# We have three different values: Old config file,
3164
2541
# new config file, and saved state.
3222
2599
for client_name in (set(client_settings)
3223
2600
- set(old_client_settings)):
3224
2601
clients_data[client_name] = client_settings[client_name]
3226
2603
# Create all client objects
3227
for client_name, client in clients_data.items():
2604
for client_name, client in clients_data.iteritems():
3228
2605
tcp_server.clients[client_name] = client_class(
3231
server_settings=server_settings)
2606
name = client_name, settings = client)
3233
2608
if not tcp_server.clients:
3234
2609
logger.warning("No clients defined")
3236
2611
if not foreground:
3237
2612
if pidfile is not None:
3241
print(pid, file=pidfile)
2616
pidfile.write(str(pid) + "\n".encode("utf-8"))
3242
2617
except IOError:
3243
2618
logger.error("Could not write to file %r with PID %d",
3244
2619
pidfilename, pid)
3246
2621
del pidfilename
3248
for termsig in (signal.SIGHUP, signal.SIGTERM):
3249
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3250
lambda: main_loop.quit() and False)
2623
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2624
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3254
@alternate_dbus_interfaces(
3255
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3256
class MandosDBusService(DBusObjectWithObjectManager):
2627
@alternate_dbus_interfaces({"se.recompile.Mandos":
2628
"se.bsnet.fukt.Mandos"})
2629
class MandosDBusService(DBusObjectWithProperties):
3257
2630
"""A D-Bus proxy object"""
3259
2631
def __init__(self):
3260
2632
dbus.service.Object.__init__(self, bus, "/")
3262
2633
_interface = "se.recompile.Mandos"
2635
@dbus_interface_annotations(_interface)
2637
return { "org.freedesktop.DBus.Property"
2638
".EmitsChangedSignal":
3264
2641
@dbus.service.signal(_interface, signature="o")
3265
2642
def ClientAdded(self, objpath):
3269
2646
@dbus.service.signal(_interface, signature="ss")
3270
2647
def ClientNotFound(self, fingerprint, address):
3274
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3276
2651
@dbus.service.signal(_interface, signature="os")
3277
2652
def ClientRemoved(self, objpath, name):
3281
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3283
2656
@dbus.service.method(_interface, out_signature="ao")
3284
2657
def GetAllClients(self):
3286
return dbus.Array(c.dbus_object_path for c in
3287
tcp_server.clients.values())
3289
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2659
return dbus.Array(c.dbus_object_path
2661
tcp_server.clients.itervalues())
3291
2663
@dbus.service.method(_interface,
3292
2664
out_signature="a{oa{sv}}")
3293
2665
def GetAllClientsWithProperties(self):
3295
2667
return dbus.Dictionary(
3296
{c.dbus_object_path: c.GetAll(
3297
"se.recompile.Mandos.Client")
3298
for c in tcp_server.clients.values()},
2668
((c.dbus_object_path, c.GetAll(""))
2669
for c in tcp_server.clients.itervalues()),
3299
2670
signature="oa{sv}")
3301
2672
@dbus.service.method(_interface, in_signature="o")
3302
2673
def RemoveClient(self, object_path):
3304
for c in tcp_server.clients.values():
2675
for c in tcp_server.clients.itervalues():
3305
2676
if c.dbus_object_path == object_path:
3306
2677
del tcp_server.clients[c.name]
3307
2678
c.remove_from_connection()
3308
# Don't signal the disabling
2679
# Don't signal anything except ClientRemoved
3309
2680
c.disable(quiet=True)
3310
# Emit D-Bus signal for removal
3311
self.client_removed_signal(c)
2682
self.ClientRemoved(object_path, c.name)
3313
2684
raise KeyError(object_path)
3317
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3318
out_signature="a{oa{sa{sv}}}")
3319
def GetManagedObjects(self):
3321
return dbus.Dictionary(
3322
{client.dbus_object_path:
3324
{interface: client.GetAll(interface)
3326
client._get_all_interface_names()})
3327
for client in tcp_server.clients.values()})
3329
def client_added_signal(self, client):
3330
"""Send the new standard signal and the old signal"""
3332
# New standard signal
3333
self.InterfacesAdded(
3334
client.dbus_object_path,
3336
{interface: client.GetAll(interface)
3338
client._get_all_interface_names()}))
3340
self.ClientAdded(client.dbus_object_path)
3342
def client_removed_signal(self, client):
3343
"""Send the new standard signal and the old signal"""
3345
# New standard signal
3346
self.InterfacesRemoved(
3347
client.dbus_object_path,
3348
client._get_all_interface_names())
3350
self.ClientRemoved(client.dbus_object_path,
3353
2688
mandos_dbus_service = MandosDBusService()
3355
# Save modules to variables to exempt the modules from being
3356
# unloaded before the function registered with atexit() is run.
3357
mp = multiprocessing
3361
2691
"Cleanup function; run on exit"
3365
mp.active_children()
2694
multiprocessing.active_children()
3367
2695
if not (tcp_server.clients or client_settings):
3370
2698
# Store client before exiting. Secrets are encrypted with key
3371
2699
# based on what config file has. If config file is
3372
2700
# removed/edited, old secret will thus be unrecovable.
3374
2702
with PGPEngine() as pgp:
3375
for client in tcp_server.clients.values():
2703
for client in tcp_server.clients.itervalues():
3376
2704
key = client_settings[client.name]["secret"]
3377
2705
client.encrypted_secret = pgp.encrypt(client.secret,
3379
2707
client_dict = {}
3381
2709
# A list of attributes that can not be pickled
3383
exclude = {"bus", "changedstate", "secret",
3384
"checker", "server_settings"}
3385
for name, typ in inspect.getmembers(dbus.service
2711
exclude = set(("bus", "changedstate", "secret",
2713
for name, typ in (inspect.getmembers
2714
(dbus.service.Object)):
3387
2715
exclude.add(name)
3389
2717
client_dict["encrypted_secret"] = (client
3390
2718
.encrypted_secret)
3391
2719
for attr in client.client_structure:
3392
2720
if attr not in exclude:
3393
2721
client_dict[attr] = getattr(client, attr)
3395
2723
clients[client.name] = client_dict
3396
2724
del client_settings[client.name]["secret"]
3399
with tempfile.NamedTemporaryFile(
3403
dir=os.path.dirname(stored_state_path),
3404
delete=False) as stored_state:
3405
pickle.dump((clients, client_settings), stored_state,
3407
tempname = stored_state.name
2727
with (tempfile.NamedTemporaryFile
2728
(mode='wb', suffix=".pickle", prefix='clients-',
2729
dir=os.path.dirname(stored_state_path),
2730
delete=False)) as stored_state:
2731
pickle.dump((clients, client_settings), stored_state)
2732
tempname=stored_state.name
3408
2733
os.rename(tempname, stored_state_path)
3409
2734
except (IOError, OSError) as e: