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# -*- mode: python; coding: utf-8 -*-
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# -*- coding: utf-8; lexical-binding: t -*-
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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 © 2008-2013 Teddy Hogeborn
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# Copyright © 2008-2013 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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# Copyright © 2008-2022 Teddy Hogeborn
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# Copyright © 2008-2022 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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# 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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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# Mandos is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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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 this program. If not, see
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# <http://www.gnu.org/licenses/>.
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# along with Mandos. If not, see <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 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 ConfigParser as configparser
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import logging.handlers
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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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if sys.version_info.major == 2:
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# Add collections.abc.Callable if it does not exist
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collections.abc.Callable
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except AttributeError:
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Callable = collections.Callable
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collections.abc = abc
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# Add shlex.quote if it does not exist
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except AttributeError:
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shlex.quote = re.escape
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# Show warnings by default
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if not sys.warnoptions:
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warnings.simplefilter("default")
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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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SO_BINDTODEVICE = None
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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 < (3, 2):
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configparser.Configparser = configparser.SafeConfigParser
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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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log = logging.getLogger(os.path.basename(sys.argv[0]))
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logging.captureWarnings(True) # Show warnings via the logging system
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if_nametoindex = (ctypes.cdll.LoadLibrary
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(ctypes.util.find_library("c"))
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if_nametoindex = ctypes.cdll.LoadLibrary(
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ctypes.util.find_library("c")).if_nametoindex
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except (OSError, AttributeError):
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def if_nametoindex(interface):
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"Get an interface index the hard way, i.e. using fcntl()"
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SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
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with contextlib.closing(socket.socket()) as s:
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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
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struct.pack(str("16s16x"),
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interface_index = struct.unpack(str("I"),
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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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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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("Mandos [%(process)d]: %(levelname)s:"
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log.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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logger.addHandler(console)
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logger.setLevel(level)
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console.setFormatter(logging.Formatter("%(asctime)s %(name)s"
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log.addHandler(console)
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class PGPError(Exception):
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.replace(b"\n", b"\\n")
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.replace(b"\0", b"\\x00"))
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def encrypt(self, data, password):
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passphrase = self.password_encode(password)
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with tempfile.NamedTemporaryFile(dir=self.tempdir
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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(['gpg', '--symmetric',
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proc = subprocess.Popen([self.gpg, "--symmetric",
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+ self.gnupgargs,
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stdin = subprocess.PIPE,
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stdout = subprocess.PIPE,
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stderr = subprocess.PIPE)
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ciphertext, err = proc.communicate(input = data)
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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ciphertext, err = proc.communicate(input=data)
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if proc.returncode != 0:
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raise PGPError(err)
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return ciphertext
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def decrypt(self, data, password):
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passphrase = self.password_encode(password)
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with tempfile.NamedTemporaryFile(dir = self.tempdir
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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(['gpg', '--decrypt',
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proc = subprocess.Popen([self.gpg, "--decrypt",
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+ self.gnupgargs,
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stdin = subprocess.PIPE,
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stdout = subprocess.PIPE,
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stderr = subprocess.PIPE)
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decrypted_plaintext, err = proc.communicate(input
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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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raise PGPError(err)
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return decrypted_plaintext
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# Pretend that we have an Avahi module
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"""This isn't so much a class as it is a module-like namespace."""
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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(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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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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return super(AvahiError, self).__init__(value, *args,
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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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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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port: integer; what port to announce
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TXT: list of strings; TXT record for the service
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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 = 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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ret = super(AvahiServiceToSyslog, self).rename(*args,
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syslogger.setFormatter(logging.Formatter(
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"Mandos ({}) [%(process)d]: %(levelname)s: %(message)s"
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def timedelta_to_milliseconds(td):
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"Convert a datetime.timedelta() to milliseconds"
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return ((td.days * 24 * 60 * 60 * 1000)
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+ (td.seconds * 1000)
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+ (td.microseconds // 1000))
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class Client(object):
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# Pretend that we have a GnuTLS module
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"""This isn't so much a class as it is a module-like namespace."""
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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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# 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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KEYID_USE_SHA256 = 1 # gnutls/x509.h
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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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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).decode(
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"utf-8", errors="replace")
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return super(gnutls.Error, self).__init__(
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class CertificateSecurityError(Error):
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def __init__(self, cls):
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def from_param(self, obj):
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if not isinstance(obj, self.cls):
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raise TypeError("Not of type {}: {!r}"
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.format(self.cls.__name__, obj))
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return ctypes.byref(obj.from_param(obj))
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class CastToVoidPointer:
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def __init__(self, cls):
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def from_param(self, obj):
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if not isinstance(obj, self.cls):
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raise TypeError("Not of type {}: {!r}"
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.format(self.cls.__name__, obj))
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return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)
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class With_from_param:
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def from_param(cls, obj):
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return obj._as_parameter_
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class Credentials(With_from_param):
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self._as_parameter_ = gnutls.certificate_credentials_t()
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gnutls.certificate_allocate_credentials(self)
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self.type = gnutls.CRD_CERTIFICATE
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gnutls.certificate_free_credentials(self)
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class ClientSession(With_from_param):
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def __init__(self, socket, credentials=None):
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self._as_parameter_ = gnutls.session_t()
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gnutls_flags = gnutls.CLIENT
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if gnutls.check_version(b"3.5.6"):
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gnutls_flags |= gnutls.NO_TICKETS
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gnutls_flags |= gnutls.ENABLE_RAWPK
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gnutls.init(self, gnutls_flags)
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gnutls.set_default_priority(self)
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gnutls.transport_set_ptr(self, socket.fileno())
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gnutls.handshake_set_private_extensions(self, True)
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if credentials is None:
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credentials = gnutls.Credentials()
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gnutls.credentials_set(self, credentials.type,
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self.credentials = credentials
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return gnutls.handshake(self)
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def send(self, data):
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data_len -= gnutls.record_send(self, data[-data_len:],
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return gnutls.bye(self, 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
678
for the "restype" attribute on ctypes functions"""
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if result >= gnutls.E_SUCCESS:
681
if result == gnutls.E_NO_CERTIFICATE_FOUND:
682
raise gnutls.CertificateSecurityError(code=result)
683
raise gnutls.Error(code=result)
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def _retry_on_error(result, func, arguments,
686
_error_code=_error_code):
687
"""A function to retry on some errors, suitable
688
for the "errcheck" attribute on ctypes functions"""
689
while result < gnutls.E_SUCCESS:
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if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
691
return _error_code(result)
692
result = func(*arguments)
695
# Unless otherwise indicated, the function declarations below are
696
# 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 = [ClientSession, 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 = [PointerTo(ClientSession), ctypes.c_int]
706
init.restype = _error_code
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set_default_priority = _library.gnutls_set_default_priority
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set_default_priority.argtypes = [ClientSession]
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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 = [ClientSession, 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
718
certificate_allocate_credentials = (
719
_library.gnutls_certificate_allocate_credentials)
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certificate_allocate_credentials.argtypes = [
721
PointerTo(Credentials)]
722
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 = [Credentials]
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certificate_free_credentials.restype = None
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handshake_set_private_extensions = (
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_library.gnutls_handshake_set_private_extensions)
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handshake_set_private_extensions.argtypes = [ClientSession,
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handshake_set_private_extensions.restype = None
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credentials_set = _library.gnutls_credentials_set
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credentials_set.argtypes = [ClientSession, credentials_type_t,
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CastToVoidPointer(Credentials)]
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credentials_set.restype = _error_code
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strerror = _library.gnutls_strerror
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strerror.argtypes = [ctypes.c_int]
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strerror.restype = ctypes.c_char_p
744
certificate_type_get = _library.gnutls_certificate_type_get
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certificate_type_get.argtypes = [ClientSession]
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certificate_type_get.restype = _error_code
748
certificate_get_peers = _library.gnutls_certificate_get_peers
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certificate_get_peers.argtypes = [ClientSession,
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ctypes.POINTER(ctypes.c_uint)]
751
certificate_get_peers.restype = ctypes.POINTER(datum_t)
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global_set_log_level = _library.gnutls_global_set_log_level
754
global_set_log_level.argtypes = [ctypes.c_int]
755
global_set_log_level.restype = None
757
global_set_log_function = _library.gnutls_global_set_log_function
758
global_set_log_function.argtypes = [log_func]
759
global_set_log_function.restype = None
761
deinit = _library.gnutls_deinit
762
deinit.argtypes = [ClientSession]
763
deinit.restype = None
765
handshake = _library.gnutls_handshake
766
handshake.argtypes = [ClientSession]
767
handshake.restype = ctypes.c_int
768
handshake.errcheck = _retry_on_error
770
transport_set_ptr = _library.gnutls_transport_set_ptr
771
transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]
772
transport_set_ptr.restype = None
774
bye = _library.gnutls_bye
775
bye.argtypes = [ClientSession, close_request_t]
776
bye.restype = ctypes.c_int
777
bye.errcheck = _retry_on_error
779
check_version = _library.gnutls_check_version
780
check_version.argtypes = [ctypes.c_char_p]
781
check_version.restype = ctypes.c_char_p
783
_need_version = b"3.3.0"
784
if check_version(_need_version) is None:
785
raise self.Error("Needs GnuTLS {} or later"
786
.format(_need_version))
788
_tls_rawpk_version = b"3.6.6"
789
has_rawpk = bool(check_version(_tls_rawpk_version))
793
class pubkey_st(ctypes.Structure):
795
pubkey_t = ctypes.POINTER(pubkey_st)
797
x509_crt_fmt_t = ctypes.c_int
799
# All the function declarations below are from
801
pubkey_init = _library.gnutls_pubkey_init
802
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
803
pubkey_init.restype = _error_code
805
pubkey_import = _library.gnutls_pubkey_import
806
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
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pubkey_import.restype = _error_code
810
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
811
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
812
ctypes.POINTER(ctypes.c_ubyte),
813
ctypes.POINTER(ctypes.c_size_t)]
814
pubkey_get_key_id.restype = _error_code
816
pubkey_deinit = _library.gnutls_pubkey_deinit
817
pubkey_deinit.argtypes = [pubkey_t]
818
pubkey_deinit.restype = None
820
# All the function declarations below are from
823
openpgp_crt_init = _library.gnutls_openpgp_crt_init
824
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
825
openpgp_crt_init.restype = _error_code
827
openpgp_crt_import = _library.gnutls_openpgp_crt_import
828
openpgp_crt_import.argtypes = [openpgp_crt_t,
829
ctypes.POINTER(datum_t),
831
openpgp_crt_import.restype = _error_code
833
openpgp_crt_verify_self = \
834
_library.gnutls_openpgp_crt_verify_self
835
openpgp_crt_verify_self.argtypes = [
838
ctypes.POINTER(ctypes.c_uint),
840
openpgp_crt_verify_self.restype = _error_code
842
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
843
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
844
openpgp_crt_deinit.restype = None
846
openpgp_crt_get_fingerprint = (
847
_library.gnutls_openpgp_crt_get_fingerprint)
848
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
852
openpgp_crt_get_fingerprint.restype = _error_code
854
if check_version(b"3.6.4"):
855
certificate_type_get2 = _library.gnutls_certificate_type_get2
856
certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]
857
certificate_type_get2.restype = _error_code
859
# Remove non-public functions
860
del _error_code, _retry_on_error
863
def call_pipe(connection, # : multiprocessing.Connection
864
func, *args, **kwargs):
865
"""This function is meant to be called by multiprocessing.Process
867
This function runs func(*args, **kwargs), and writes the resulting
868
return value on the provided multiprocessing.Connection.
870
connection.send(func(*args, **kwargs))
409
875
"""A representation of a client host served by this server.
412
approved: bool(); 'None' if not yet approved/disapproved
878
approved: bool(); None if not yet approved/disapproved
413
879
approval_delay: datetime.timedelta(); Time to wait for approval
414
880
approval_duration: datetime.timedelta(); Duration of one approval
415
checker: subprocess.Popen(); a running checker process used
416
to see if the client lives.
417
'None' if no process is running.
418
checker_callback_tag: a gobject event source tag, or None
881
checker: multiprocessing.Process(); a running checker process used
882
to see if the client lives. None if no process is
884
checker_callback_tag: a GLib event source tag, or None
419
885
checker_command: string; External command which is run to check
420
886
if client lives. %() expansions are done at
421
887
runtime with vars(self) as dict, so that for
422
888
instance %(name)s can be used in the command.
423
checker_initiator_tag: a gobject event source tag, or None
889
checker_initiator_tag: a GLib event source tag, or None
424
890
created: datetime.datetime(); (UTC) object creation
425
891
client_structure: Object describing what attributes a client has
426
892
and is used for storing the client at exit
427
893
current_checker_command: string; current running checker_command
428
disable_initiator_tag: a gobject event source tag, or None
894
disable_initiator_tag: a GLib event source tag, or None
430
896
fingerprint: string (40 or 32 hexadecimal digits); used to
431
uniquely identify the client
897
uniquely identify an OpenPGP client
898
key_id: string (64 hexadecimal digits); used to uniquely identify
899
a client using raw public keys
432
900
host: string; available for use by the checker command
433
901
interval: datetime.timedelta(); How often to start a new checker
434
902
last_approval_request: datetime.datetime(); (UTC) or None
592
1050
self.last_enabled = datetime.datetime.utcnow()
593
1051
self.init_checker()
594
1052
self.send_changedstate()
596
1054
def disable(self, quiet=True):
597
1055
"""Disable this client."""
598
1056
if not getattr(self, "enabled", False):
601
logger.info("Disabling client %s", self.name)
1059
log.info("Disabling client %s", self.name)
602
1060
if getattr(self, "disable_initiator_tag", None) is not None:
603
gobject.source_remove(self.disable_initiator_tag)
1061
GLib.source_remove(self.disable_initiator_tag)
604
1062
self.disable_initiator_tag = None
605
1063
self.expires = None
606
1064
if getattr(self, "checker_initiator_tag", None) is not None:
607
gobject.source_remove(self.checker_initiator_tag)
1065
GLib.source_remove(self.checker_initiator_tag)
608
1066
self.checker_initiator_tag = None
609
1067
self.stop_checker()
610
1068
self.enabled = False
612
1070
self.send_changedstate()
613
# Do not run this again if called by a gobject.timeout_add
1071
# Do not run this again if called by a GLib.timeout_add
616
1074
def __del__(self):
619
1077
def init_checker(self):
620
1078
# Schedule a new checker to be started an 'interval' from now,
621
1079
# and every interval from then on.
622
1080
if self.checker_initiator_tag is not None:
623
gobject.source_remove(self.checker_initiator_tag)
624
self.checker_initiator_tag = (gobject.timeout_add
625
(self.interval_milliseconds(),
1081
GLib.source_remove(self.checker_initiator_tag)
1082
self.checker_initiator_tag = GLib.timeout_add(
1083
random.randrange(int(self.interval.total_seconds() * 1000
627
1086
# Schedule a disable() when 'timeout' has passed
628
1087
if self.disable_initiator_tag is not None:
629
gobject.source_remove(self.disable_initiator_tag)
630
self.disable_initiator_tag = (gobject.timeout_add
631
(self.timeout_milliseconds(),
1088
GLib.source_remove(self.disable_initiator_tag)
1089
self.disable_initiator_tag = GLib.timeout_add(
1090
int(self.timeout.total_seconds() * 1000), self.disable)
633
1091
# Also start a new checker *right now*.
634
1092
self.start_checker()
636
def checker_callback(self, pid, condition, command):
1094
def checker_callback(self, source, condition, connection,
637
1096
"""The checker has completed, so take appropriate actions."""
1097
# Read return code from connection (see call_pipe)
1098
returncode = connection.recv()
1100
if self.checker is not None:
638
1102
self.checker_callback_tag = None
639
1103
self.checker = None
640
if os.WIFEXITED(condition):
641
self.last_checker_status = os.WEXITSTATUS(condition)
1106
self.last_checker_status = returncode
1107
self.last_checker_signal = None
642
1108
if self.last_checker_status == 0:
643
logger.info("Checker for %(name)s succeeded",
1109
log.info("Checker for %(name)s succeeded", vars(self))
645
1110
self.checked_ok()
647
logger.info("Checker for %(name)s failed",
1112
log.info("Checker for %(name)s failed", vars(self))
650
1114
self.last_checker_status = -1
651
logger.warning("Checker for %(name)s crashed?",
1115
self.last_checker_signal = -returncode
1116
log.warning("Checker for %(name)s crashed?", vars(self))
654
1119
def checked_ok(self):
655
1120
"""Assert that the client has been seen, alive and well."""
656
1121
self.last_checked_ok = datetime.datetime.utcnow()
657
1122
self.last_checker_status = 0
1123
self.last_checker_signal = None
658
1124
self.bump_timeout()
660
1126
def bump_timeout(self, timeout=None):
661
1127
"""Bump up the timeout for this client."""
662
1128
if timeout is None:
663
1129
timeout = self.timeout
664
1130
if self.disable_initiator_tag is not None:
665
gobject.source_remove(self.disable_initiator_tag)
1131
GLib.source_remove(self.disable_initiator_tag)
666
1132
self.disable_initiator_tag = None
667
1133
if getattr(self, "enabled", False):
668
self.disable_initiator_tag = (gobject.timeout_add
669
(timedelta_to_milliseconds
670
(timeout), self.disable))
1134
self.disable_initiator_tag = GLib.timeout_add(
1135
int(timeout.total_seconds() * 1000), self.disable)
671
1136
self.expires = datetime.datetime.utcnow() + timeout
673
1138
def need_approval(self):
674
1139
self.last_approval_request = datetime.datetime.utcnow()
676
1141
def start_checker(self):
677
1142
"""Start a new checker subprocess if one is not running.
679
1144
If a checker already exists, leave it running and do
681
1146
# The reason for not killing a running checker is that if we
686
1151
# checkers alone, the checker would have to take more time
687
1152
# than 'timeout' for the client to be disabled, which is as it
690
# If a checker exists, make sure it is not a zombie
692
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
693
except (AttributeError, OSError) as error:
694
if (isinstance(error, OSError)
695
and error.errno != errno.ECHILD):
699
logger.warning("Checker was a zombie")
700
gobject.source_remove(self.checker_callback_tag)
701
self.checker_callback(pid, status,
702
self.current_checker_command)
1155
if self.checker is not None and not self.checker.is_alive():
1156
log.warning("Checker was not alive; joining")
703
1159
# Start a new checker if needed
704
1160
if self.checker is None:
705
1161
# Escape attributes for the shell
706
escaped_attrs = dict(
707
(attr, re.escape(unicode(getattr(self, attr))))
709
self.runtime_expansions)
1163
attr: shlex.quote(str(getattr(self, attr)))
1164
for attr in self.runtime_expansions}
711
1166
command = self.checker_command % escaped_attrs
712
1167
except TypeError as error:
713
logger.error('Could not format string "%s"',
714
self.checker_command, exc_info=error)
715
return True # Try again later
1168
log.error('Could not format string "%s"',
1169
self.checker_command, exc_info=error)
1170
return True # Try again later
716
1171
self.current_checker_command = command
718
logger.info("Starting checker %r for %s",
720
# We don't need to redirect stdout and stderr, since
721
# in normal mode, that is already done by daemon(),
722
# and in debug mode we don't want to. (Stdin is
723
# always replaced by /dev/null.)
724
# The exception is when not debugging but nevertheless
725
# running in the foreground; use the previously
728
if (not self.server_settings["debug"]
729
and self.server_settings["foreground"]):
730
popen_args.update({"stdout": wnull,
732
self.checker = subprocess.Popen(command,
736
except OSError as error:
737
logger.error("Failed to start subprocess",
740
self.checker_callback_tag = (gobject.child_watch_add
742
self.checker_callback,
744
# The checker may have completed before the gobject
745
# watch was added. Check for this.
747
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
748
except OSError as error:
749
if error.errno == errno.ECHILD:
750
# This should never happen
751
logger.error("Child process vanished",
756
gobject.source_remove(self.checker_callback_tag)
757
self.checker_callback(pid, status, command)
758
# Re-run this periodically if run by gobject.timeout_add
1172
log.info("Starting checker %r for %s", command, self.name)
1173
# We don't need to redirect stdout and stderr, since
1174
# in normal mode, that is already done by daemon(),
1175
# and in debug mode we don't want to. (Stdin is
1176
# always replaced by /dev/null.)
1177
# The exception is when not debugging but nevertheless
1178
# running in the foreground; use the previously
1180
popen_args = {"close_fds": True,
1183
if (not self.server_settings["debug"]
1184
and self.server_settings["foreground"]):
1185
popen_args.update({"stdout": wnull,
1187
pipe = multiprocessing.Pipe(duplex=False)
1188
self.checker = multiprocessing.Process(
1190
args=(pipe[1], subprocess.call, command),
1192
self.checker.start()
1193
self.checker_callback_tag = GLib.io_add_watch(
1194
GLib.IOChannel.unix_new(pipe[0].fileno()),
1195
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1196
self.checker_callback, pipe[0], command)
1197
# Re-run this periodically if run by GLib.timeout_add
761
1200
def stop_checker(self):
762
1201
"""Force the checker process, if any, to stop."""
763
1202
if self.checker_callback_tag:
764
gobject.source_remove(self.checker_callback_tag)
1203
GLib.source_remove(self.checker_callback_tag)
765
1204
self.checker_callback_tag = None
766
1205
if getattr(self, "checker", None) is None:
768
logger.debug("Stopping checker for %(name)s", vars(self))
770
self.checker.terminate()
772
#if self.checker.poll() is None:
773
# self.checker.kill()
774
except OSError as error:
775
if error.errno != errno.ESRCH: # No such process
1207
log.debug("Stopping checker for %(name)s", vars(self))
1208
self.checker.terminate()
777
1209
self.checker = None
780
def dbus_service_property(dbus_interface, signature="v",
781
access="readwrite", byte_arrays=False):
1212
def dbus_service_property(dbus_interface,
782
1216
"""Decorators for marking methods of a DBusObjectWithProperties to
783
1217
become properties on the D-Bus.
785
1219
The decorated method will be called with no arguments by "Get"
786
1220
and with one argument by "Set".
788
1222
The parameters, where they are supported, are the same as
789
1223
dbus.service.method, except there is only "signature", since the
790
1224
type from Get() and the type sent to Set() is the same.
866
class DBusObjectWithProperties(dbus.service.Object):
867
"""A D-Bus object with properties.
869
Classes inheriting from this can use the dbus_service_property
870
decorator to expose methods as D-Bus properties. It exposes the
871
standard Get(), Set(), and GetAll() methods on the D-Bus.
1307
class DBusObjectWithAnnotations(dbus.service.Object):
1308
"""A D-Bus object with annotations.
1310
Classes inheriting from this can use the dbus_annotations
1311
decorator to add annotations to methods or signals.
875
1315
def _is_dbus_thing(thing):
876
1316
"""Returns a function testing if an attribute is a D-Bus thing
878
1318
If called like _is_dbus_thing("method") it returns a function
879
1319
suitable for use as predicate to inspect.getmembers().
881
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1321
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
884
1324
def _get_all_dbus_things(self, thing):
885
1325
"""Returns a generator of (name, attribute) pairs
887
return ((getattr(athing.__get__(self), "_dbus_name",
1327
return ((getattr(athing.__get__(self), "_dbus_name", name),
889
1328
athing.__get__(self))
890
1329
for cls in self.__class__.__mro__
891
1330
for name, athing in
892
inspect.getmembers(cls,
893
self._is_dbus_thing(thing)))
1331
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1333
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1335
path_keyword="object_path",
1336
connection_keyword="connection")
1337
def Introspect(self, object_path, connection):
1338
"""Overloading of standard D-Bus method.
1340
Inserts annotation tags on methods and signals.
1342
xmlstring = dbus.service.Object.Introspect(self, object_path,
1345
document = xml.dom.minidom.parseString(xmlstring)
1347
for if_tag in document.getElementsByTagName("interface"):
1348
# Add annotation tags
1349
for typ in ("method", "signal"):
1350
for tag in if_tag.getElementsByTagName(typ):
1352
for name, prop in (self.
1353
_get_all_dbus_things(typ)):
1354
if (name == tag.getAttribute("name")
1355
and prop._dbus_interface
1356
== if_tag.getAttribute("name")):
1357
annots.update(getattr(
1358
prop, "_dbus_annotations", {}))
1359
for name, value in annots.items():
1360
ann_tag = document.createElement(
1362
ann_tag.setAttribute("name", name)
1363
ann_tag.setAttribute("value", value)
1364
tag.appendChild(ann_tag)
1365
# Add interface annotation tags
1366
for annotation, value in dict(
1367
itertools.chain.from_iterable(
1368
annotations().items()
1369
for name, annotations
1370
in self._get_all_dbus_things("interface")
1371
if name == if_tag.getAttribute("name")
1373
ann_tag = document.createElement("annotation")
1374
ann_tag.setAttribute("name", annotation)
1375
ann_tag.setAttribute("value", value)
1376
if_tag.appendChild(ann_tag)
1377
# Fix argument name for the Introspect method itself
1378
if (if_tag.getAttribute("name")
1379
== dbus.INTROSPECTABLE_IFACE):
1380
for cn in if_tag.getElementsByTagName("method"):
1381
if cn.getAttribute("name") == "Introspect":
1382
for arg in cn.getElementsByTagName("arg"):
1383
if (arg.getAttribute("direction")
1385
arg.setAttribute("name",
1387
xmlstring = document.toxml("utf-8")
1389
except (AttributeError, xml.dom.DOMException,
1390
xml.parsers.expat.ExpatError) as error:
1391
log.error("Failed to override Introspection method",
1396
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1397
"""A D-Bus object with properties.
1399
Classes inheriting from this can use the dbus_service_property
1400
decorator to expose methods as D-Bus properties. It exposes the
1401
standard Get(), Set(), and GetAll() methods on the D-Bus.
895
1404
def _get_dbus_property(self, interface_name, property_name):
896
1405
"""Returns a bound method if one exists which is a D-Bus
897
1406
property with the specified name and interface.
899
for cls in self.__class__.__mro__:
900
for name, value in (inspect.getmembers
902
self._is_dbus_thing("property"))):
1408
for cls in self.__class__.__mro__:
1409
for name, value in inspect.getmembers(
1410
cls, self._is_dbus_thing("property")):
903
1411
if (value._dbus_name == property_name
904
1412
and value._dbus_interface == interface_name):
905
1413
return value.__get__(self)
907
1415
# No such property
908
raise DBusPropertyNotFound(self.dbus_object_path + ":"
909
+ interface_name + "."
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1416
raise DBusPropertyNotFound("{}:{}.{}".format(
1417
self.dbus_object_path, interface_name, property_name))
1420
def _get_all_interface_names(cls):
1421
"""Get a sequence of all interfaces supported by an object"""
1422
return (name for name in set(getattr(getattr(x, attr),
1423
"_dbus_interface", None)
1424
for x in (inspect.getmro(cls))
1426
if name is not None)
1428
@dbus.service.method(dbus.PROPERTIES_IFACE,
913
1430
out_signature="v")
914
1431
def Get(self, interface_name, property_name):
915
1432
"""Standard D-Bus property Get() method, see D-Bus standard.
1040
1555
document.unlink()
1041
1556
except (AttributeError, xml.dom.DOMException,
1042
1557
xml.parsers.expat.ExpatError) as error:
1043
logger.error("Failed to override Introspection method",
1558
log.error("Failed to override Introspection method",
1564
dbus.OBJECT_MANAGER_IFACE
1565
except AttributeError:
1566
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1569
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1570
"""A D-Bus object with an ObjectManager.
1572
Classes inheriting from this exposes the standard
1573
GetManagedObjects call and the InterfacesAdded and
1574
InterfacesRemoved signals on the standard
1575
"org.freedesktop.DBus.ObjectManager" interface.
1577
Note: No signals are sent automatically; they must be sent
1580
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1581
out_signature="a{oa{sa{sv}}}")
1582
def GetManagedObjects(self):
1583
"""This function must be overridden"""
1584
raise NotImplementedError()
1586
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1587
signature="oa{sa{sv}}")
1588
def InterfacesAdded(self, object_path, interfaces_and_properties):
1591
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1592
def InterfacesRemoved(self, object_path, interfaces):
1595
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1597
path_keyword="object_path",
1598
connection_keyword="connection")
1599
def Introspect(self, object_path, connection):
1600
"""Overloading of standard D-Bus method.
1602
Override return argument name of GetManagedObjects to be
1603
"objpath_interfaces_and_properties"
1605
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1609
document = xml.dom.minidom.parseString(xmlstring)
1611
for if_tag in document.getElementsByTagName("interface"):
1612
# Fix argument name for the GetManagedObjects method
1613
if (if_tag.getAttribute("name")
1614
== dbus.OBJECT_MANAGER_IFACE):
1615
for cn in if_tag.getElementsByTagName("method"):
1616
if (cn.getAttribute("name")
1617
== "GetManagedObjects"):
1618
for arg in cn.getElementsByTagName("arg"):
1619
if (arg.getAttribute("direction")
1623
"objpath_interfaces"
1625
xmlstring = document.toxml("utf-8")
1627
except (AttributeError, xml.dom.DOMException,
1628
xml.parsers.expat.ExpatError) as error:
1629
log.error("Failed to override Introspection method",
1045
1631
return xmlstring
1048
1634
def datetime_to_dbus(dt, variant_level=0):
1049
1635
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1051
return dbus.String("", variant_level = variant_level)
1052
return dbus.String(dt.isoformat(),
1053
variant_level=variant_level)
1637
return dbus.String("", variant_level=variant_level)
1638
return dbus.String(dt.isoformat(), variant_level=variant_level)
1056
1641
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1409
2002
server to mandos-client
1413
2006
# Rejected - signal
1414
2007
@dbus.service.signal(_interface, signature="s")
1415
2008
def Rejected(self, reason):
1419
2012
# NeedApproval - signal
1420
2013
@dbus.service.signal(_interface, signature="tb")
1421
2014
def NeedApproval(self, timeout, default):
1423
2016
return self.need_approval()
1427
2020
# Approve - method
1428
2021
@dbus.service.method(_interface, in_signature="b")
1429
2022
def Approve(self, value):
1430
2023
self.approve(value)
1432
2025
# CheckedOK - method
1433
2026
@dbus.service.method(_interface)
1434
2027
def CheckedOK(self):
1435
2028
self.checked_ok()
1437
2030
# Enable - method
2031
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1438
2032
@dbus.service.method(_interface)
1439
2033
def Enable(self):
1443
2037
# StartChecker - method
2038
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1444
2039
@dbus.service.method(_interface)
1445
2040
def StartChecker(self):
1447
2042
self.start_checker()
1449
2044
# Disable - method
2045
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1450
2046
@dbus.service.method(_interface)
1451
2047
def Disable(self):
1455
2051
# StopChecker - method
2052
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1456
2053
@dbus.service.method(_interface)
1457
2054
def StopChecker(self):
1458
2055
self.stop_checker()
1462
2059
# ApprovalPending - property
1463
2060
@dbus_service_property(_interface, signature="b", access="read")
1464
2061
def ApprovalPending_dbus_property(self):
1465
2062
return dbus.Boolean(bool(self.approvals_pending))
1467
2064
# ApprovedByDefault - property
1468
@dbus_service_property(_interface, signature="b",
2065
@dbus_service_property(_interface,
1469
2067
access="readwrite")
1470
2068
def ApprovedByDefault_dbus_property(self, value=None):
1471
2069
if value is None: # get
1472
2070
return dbus.Boolean(self.approved_by_default)
1473
2071
self.approved_by_default = bool(value)
1475
2073
# ApprovalDelay - property
1476
@dbus_service_property(_interface, signature="t",
2074
@dbus_service_property(_interface,
1477
2076
access="readwrite")
1478
2077
def ApprovalDelay_dbus_property(self, value=None):
1479
2078
if value is None: # get
1480
return dbus.UInt64(self.approval_delay_milliseconds())
2079
return dbus.UInt64(self.approval_delay.total_seconds()
1481
2081
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1483
2083
# ApprovalDuration - property
1484
@dbus_service_property(_interface, signature="t",
2084
@dbus_service_property(_interface,
1485
2086
access="readwrite")
1486
2087
def ApprovalDuration_dbus_property(self, value=None):
1487
2088
if value is None: # get
1488
return dbus.UInt64(timedelta_to_milliseconds(
1489
self.approval_duration))
2089
return dbus.UInt64(self.approval_duration.total_seconds()
1490
2091
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1492
2093
# Name - property
2095
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1493
2096
@dbus_service_property(_interface, signature="s", access="read")
1494
2097
def Name_dbus_property(self):
1495
2098
return dbus.String(self.name)
2102
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2103
@dbus_service_property(_interface, signature="s", access="read")
2104
def KeyID_dbus_property(self):
2105
return dbus.String(self.key_id)
1497
2107
# Fingerprint - property
2109
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1498
2110
@dbus_service_property(_interface, signature="s", access="read")
1499
2111
def Fingerprint_dbus_property(self):
1500
2112
return dbus.String(self.fingerprint)
1502
2114
# Host - property
1503
@dbus_service_property(_interface, signature="s",
2115
@dbus_service_property(_interface,
1504
2117
access="readwrite")
1505
2118
def Host_dbus_property(self, value=None):
1506
2119
if value is None: # get
1507
2120
return dbus.String(self.host)
1508
self.host = unicode(value)
2121
self.host = str(value)
1510
2123
# Created - property
2125
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1511
2126
@dbus_service_property(_interface, signature="s", access="read")
1512
2127
def Created_dbus_property(self):
1513
2128
return datetime_to_dbus(self.created)
1515
2130
# LastEnabled - property
1516
2131
@dbus_service_property(_interface, signature="s", access="read")
1517
2132
def LastEnabled_dbus_property(self):
1518
2133
return datetime_to_dbus(self.last_enabled)
1520
2135
# Enabled - property
1521
@dbus_service_property(_interface, signature="b",
2136
@dbus_service_property(_interface,
1522
2138
access="readwrite")
1523
2139
def Enabled_dbus_property(self, value=None):
1524
2140
if value is None: # get
1620
2241
self.start_checker()
1622
2243
self.stop_checker()
1624
2245
# ObjectPath - property
2247
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2248
"org.freedesktop.DBus.Deprecated": "true"})
1625
2249
@dbus_service_property(_interface, signature="o", access="read")
1626
2250
def ObjectPath_dbus_property(self):
1627
return self.dbus_object_path # is already a dbus.ObjectPath
2251
return self.dbus_object_path # is already a dbus.ObjectPath
1629
2253
# Secret = property
1630
@dbus_service_property(_interface, signature="ay",
1631
access="write", byte_arrays=True)
2255
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2257
@dbus_service_property(_interface,
1632
2261
def Secret_dbus_property(self, value):
1633
self.secret = str(value)
2262
self.secret = bytes(value)
1638
class ProxyClient(object):
1639
def __init__(self, child_pipe, fpr, address):
2268
def __init__(self, child_pipe, key_id, fpr, address):
1640
2269
self._pipe = child_pipe
1641
self._pipe.send(('init', fpr, address))
2270
self._pipe.send(("init", key_id, fpr, address))
1642
2271
if not self._pipe.recv():
2272
raise KeyError(key_id or fpr)
1645
2274
def __getattribute__(self, name):
1647
2276
return super(ProxyClient, self).__getattribute__(name)
1648
self._pipe.send(('getattr', name))
2277
self._pipe.send(("getattr", name))
1649
2278
data = self._pipe.recv()
1650
if data[0] == 'data':
2279
if data[0] == "data":
1652
if data[0] == 'function':
2281
if data[0] == "function":
1653
2283
def func(*args, **kwargs):
1654
self._pipe.send(('funcall', name, args, kwargs))
2284
self._pipe.send(("funcall", name, args, kwargs))
1655
2285
return self._pipe.recv()[1]
1658
2289
def __setattr__(self, name, value):
1660
2291
return super(ProxyClient, self).__setattr__(name, value)
1661
self._pipe.send(('setattr', name, value))
2292
self._pipe.send(("setattr", name, value))
1664
2295
class ClientHandler(socketserver.BaseRequestHandler, object):
1665
2296
"""A class to handle client connections.
1667
2298
Instantiated once for each connection to handle it.
1668
2299
Note: This will run in its own forked process."""
1670
2301
def handle(self):
1671
2302
with contextlib.closing(self.server.child_pipe) as child_pipe:
1672
logger.info("TCP connection from: %s",
1673
unicode(self.client_address))
1674
logger.debug("Pipe FD: %d",
1675
self.server.child_pipe.fileno())
1677
session = (gnutls.connection
1678
.ClientSession(self.request,
1680
.X509Credentials()))
1682
# Note: gnutls.connection.X509Credentials is really a
1683
# generic GnuTLS certificate credentials object so long as
1684
# no X.509 keys are added to it. Therefore, we can use it
1685
# here despite using OpenPGP certificates.
1687
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1688
# "+AES-256-CBC", "+SHA1",
1689
# "+COMP-NULL", "+CTYPE-OPENPGP",
2303
log.info("TCP connection from: %s",
2304
str(self.client_address))
2305
log.debug("Pipe FD: %d", self.server.child_pipe.fileno())
2307
session = gnutls.ClientSession(self.request)
2309
# priority = ":".join(("NONE", "+VERS-TLS1.1",
2310
# "+AES-256-CBC", "+SHA1",
2311
# "+COMP-NULL", "+CTYPE-OPENPGP",
1691
2313
# Use a fallback default, since this MUST be set.
1692
2314
priority = self.server.gnutls_priority
1693
2315
if priority is None:
1694
2316
priority = "NORMAL"
1695
(gnutls.library.functions
1696
.gnutls_priority_set_direct(session._c_object,
2317
gnutls.priority_set_direct(session,
2318
priority.encode("utf-8"), None)
1699
2320
# Start communication using the Mandos protocol
1700
2321
# Get protocol number
1701
2322
line = self.request.makefile().readline()
1702
logger.debug("Protocol version: %r", line)
2323
log.debug("Protocol version: %r", line)
1704
2325
if int(line.strip().split()[0]) > 1:
2326
raise RuntimeError(line)
1706
2327
except (ValueError, IndexError, RuntimeError) as error:
1707
logger.error("Unknown protocol version: %s", error)
2328
log.error("Unknown protocol version: %s", error)
1710
2331
# Start GnuTLS connection
1712
2333
session.handshake()
1713
except gnutls.errors.GNUTLSError as error:
1714
logger.warning("Handshake failed: %s", error)
2334
except gnutls.Error as error:
2335
log.warning("Handshake failed: %s", error)
1715
2336
# Do not run session.bye() here: the session is not
1716
2337
# established. Just abandon the request.
1718
logger.debug("Handshake succeeded")
2339
log.debug("Handshake succeeded")
1720
2341
approval_required = False
1723
fpr = self.fingerprint(self.peer_certificate
1726
gnutls.errors.GNUTLSError) as error:
1727
logger.warning("Bad certificate: %s", error)
1729
logger.debug("Fingerprint: %s", fpr)
1732
client = ProxyClient(child_pipe, fpr,
2343
if gnutls.has_rawpk:
2346
key_id = self.key_id(
2347
self.peer_certificate(session))
2348
except (TypeError, gnutls.Error) as error:
2349
log.warning("Bad certificate: %s", error)
2351
log.debug("Key ID: %s",
2352
key_id.decode("utf-8",
2358
fpr = self.fingerprint(
2359
self.peer_certificate(session))
2360
except (TypeError, gnutls.Error) as error:
2361
log.warning("Bad certificate: %s", error)
2363
log.debug("Fingerprint: %s", fpr)
2366
client = ProxyClient(child_pipe, key_id, fpr,
1733
2367
self.client_address)
1734
2368
except KeyError:
1737
2371
if client.approval_delay:
1738
2372
delay = client.approval_delay
1739
2373
client.approvals_pending += 1
1740
2374
approval_required = True
1743
2377
if not client.enabled:
1744
logger.info("Client %s is disabled",
2378
log.info("Client %s is disabled", client.name)
1746
2379
if self.server.use_dbus:
1747
2380
# Emit D-Bus signal
1748
2381
client.Rejected("Disabled")
1751
2384
if client.approved or not client.approval_delay:
1752
#We are approved or approval is disabled
2385
# We are approved or approval is disabled
1754
2387
elif client.approved is None:
1755
logger.info("Client %s needs approval",
2388
log.info("Client %s needs approval",
2390
if self.server.use_dbus:
2392
client.NeedApproval(
2393
client.approval_delay.total_seconds()
2394
* 1000, client.approved_by_default)
2396
log.warning("Client %s was not approved",
1757
2398
if self.server.use_dbus:
1758
2399
# Emit D-Bus signal
1759
client.NeedApproval(
1760
client.approval_delay_milliseconds(),
1761
client.approved_by_default)
1763
logger.warning("Client %s was not approved",
1765
if self.server.use_dbus:
1767
2400
client.Rejected("Denied")
1770
#wait until timeout or approved
2403
# wait until timeout or approved
1771
2404
time = datetime.datetime.now()
1772
2405
client.changedstate.acquire()
1773
client.changedstate.wait(
1774
float(timedelta_to_milliseconds(delay)
2406
client.changedstate.wait(delay.total_seconds())
1776
2407
client.changedstate.release()
1777
2408
time2 = datetime.datetime.now()
1778
2409
if (time2 - time) >= delay:
1779
2410
if not client.approved_by_default:
1780
logger.warning("Client %s timed out while"
1781
" waiting for approval",
2411
log.warning("Client %s timed out while"
2412
" waiting for approval",
1783
2414
if self.server.use_dbus:
1784
2415
# Emit D-Bus signal
1785
2416
client.Rejected("Approval timed out")
1790
2421
delay -= time2 - time
1793
while sent_size < len(client.secret):
1795
sent = session.send(client.secret[sent_size:])
1796
except gnutls.errors.GNUTLSError as error:
1797
logger.warning("gnutls send failed",
1800
logger.debug("Sent: %d, remaining: %d",
1801
sent, len(client.secret)
1802
- (sent_size + sent))
1805
logger.info("Sending secret to %s", client.name)
2424
session.send(client.secret)
2425
except gnutls.Error as error:
2426
log.warning("gnutls send failed", exc_info=error)
2429
log.info("Sending secret to %s", client.name)
1806
2430
# bump the timeout using extended_timeout
1807
2431
client.bump_timeout(client.extended_timeout)
1808
2432
if self.server.use_dbus:
1809
2433
# Emit D-Bus signal
1810
2434
client.GotSecret()
1813
2437
if approval_required:
1814
2438
client.approvals_pending -= 1
1817
except gnutls.errors.GNUTLSError as error:
1818
logger.warning("GnuTLS bye failed",
2441
except gnutls.Error as error:
2442
log.warning("GnuTLS bye failed", exc_info=error)
1822
2445
def peer_certificate(session):
1823
"Return the peer's OpenPGP certificate as a bytestring"
1824
# If not an OpenPGP certificate...
1825
if (gnutls.library.functions
1826
.gnutls_certificate_type_get(session._c_object)
1827
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1828
# ...do the normal thing
1829
return session.peer_certificate
2446
"Return the peer's certificate as a bytestring"
2448
cert_type = gnutls.certificate_type_get2(
2449
session, gnutls.CTYPE_PEERS)
2450
except AttributeError:
2451
cert_type = gnutls.certificate_type_get(session)
2452
if gnutls.has_rawpk:
2453
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2455
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2456
# If not a valid certificate type...
2457
if cert_type not in valid_cert_types:
2458
log.info("Cert type %r not in %r", cert_type,
2460
# ...return invalid data
1830
2462
list_size = ctypes.c_uint(1)
1831
cert_list = (gnutls.library.functions
1832
.gnutls_certificate_get_peers
1833
(session._c_object, ctypes.byref(list_size)))
2463
cert_list = (gnutls.certificate_get_peers
2464
(session, ctypes.byref(list_size)))
1834
2465
if not bool(cert_list) and list_size.value != 0:
1835
raise gnutls.errors.GNUTLSError("error getting peer"
2466
raise gnutls.Error("error getting peer certificate")
1837
2467
if list_size.value == 0:
1839
2469
cert = cert_list[0]
1840
2470
return ctypes.string_at(cert.data, cert.size)
2473
def key_id(certificate):
2474
"Convert a certificate bytestring to a hexdigit key ID"
2475
# New GnuTLS "datum" with the public key
2476
datum = gnutls.datum_t(
2477
ctypes.cast(ctypes.c_char_p(certificate),
2478
ctypes.POINTER(ctypes.c_ubyte)),
2479
ctypes.c_uint(len(certificate)))
2480
# XXX all these need to be created in the gnutls "module"
2481
# New empty GnuTLS certificate
2482
pubkey = gnutls.pubkey_t()
2483
gnutls.pubkey_init(ctypes.byref(pubkey))
2484
# Import the raw public key into the certificate
2485
gnutls.pubkey_import(pubkey,
2486
ctypes.byref(datum),
2487
gnutls.X509_FMT_DER)
2488
# New buffer for the key ID
2489
buf = ctypes.create_string_buffer(32)
2490
buf_len = ctypes.c_size_t(len(buf))
2491
# Get the key ID from the raw public key into the buffer
2492
gnutls.pubkey_get_key_id(
2494
gnutls.KEYID_USE_SHA256,
2495
ctypes.cast(ctypes.byref(buf),
2496
ctypes.POINTER(ctypes.c_ubyte)),
2497
ctypes.byref(buf_len))
2498
# Deinit the certificate
2499
gnutls.pubkey_deinit(pubkey)
2501
# Convert the buffer to a Python bytestring
2502
key_id = ctypes.string_at(buf, buf_len.value)
2503
# Convert the bytestring to hexadecimal notation
2504
hex_key_id = binascii.hexlify(key_id).upper()
1843
2508
def fingerprint(openpgp):
1844
2509
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1845
2510
# New GnuTLS "datum" with the OpenPGP public key
1846
datum = (gnutls.library.types
1847
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1850
ctypes.c_uint(len(openpgp))))
2511
datum = gnutls.datum_t(
2512
ctypes.cast(ctypes.c_char_p(openpgp),
2513
ctypes.POINTER(ctypes.c_ubyte)),
2514
ctypes.c_uint(len(openpgp)))
1851
2515
# New empty GnuTLS certificate
1852
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1853
(gnutls.library.functions
1854
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2516
crt = gnutls.openpgp_crt_t()
2517
gnutls.openpgp_crt_init(ctypes.byref(crt))
1855
2518
# Import the OpenPGP public key into the certificate
1856
(gnutls.library.functions
1857
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1858
gnutls.library.constants
1859
.GNUTLS_OPENPGP_FMT_RAW))
2519
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2520
gnutls.OPENPGP_FMT_RAW)
1860
2521
# Verify the self signature in the key
1861
2522
crtverify = ctypes.c_uint()
1862
(gnutls.library.functions
1863
.gnutls_openpgp_crt_verify_self(crt, 0,
1864
ctypes.byref(crtverify)))
2523
gnutls.openpgp_crt_verify_self(crt, 0,
2524
ctypes.byref(crtverify))
1865
2525
if crtverify.value != 0:
1866
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1867
raise (gnutls.errors.CertificateSecurityError
2526
gnutls.openpgp_crt_deinit(crt)
2527
raise gnutls.CertificateSecurityError(code
1869
2529
# New buffer for the fingerprint
1870
2530
buf = ctypes.create_string_buffer(20)
1871
2531
buf_len = ctypes.c_size_t()
1872
2532
# Get the fingerprint from the certificate into the buffer
1873
(gnutls.library.functions
1874
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1875
ctypes.byref(buf_len)))
2533
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2534
ctypes.byref(buf_len))
1876
2535
# Deinit the certificate
1877
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2536
gnutls.openpgp_crt_deinit(crt)
1878
2537
# Convert the buffer to a Python bytestring
1879
2538
fpr = ctypes.string_at(buf, buf_len.value)
1880
2539
# Convert the bytestring to hexadecimal notation
1963
2628
# socket_wrapper(), if socketfd was set.
1964
2629
socketserver.TCPServer.__init__(self, server_address,
1965
2630
RequestHandlerClass)
1967
2632
def server_bind(self):
1968
2633
"""This overrides the normal server_bind() function
1969
2634
to bind to an interface if one was specified, and also NOT to
1970
2635
bind to an address or port if they were not specified."""
2636
global SO_BINDTODEVICE
1971
2637
if self.interface is not None:
1972
2638
if SO_BINDTODEVICE is None:
1973
logger.error("SO_BINDTODEVICE does not exist;"
1974
" cannot bind to interface %s",
1978
self.socket.setsockopt(socket.SOL_SOCKET,
1980
str(self.interface + '\0'))
1981
except socket.error as error:
1982
if error.errno == errno.EPERM:
1983
logger.error("No permission to bind to"
1984
" interface %s", self.interface)
1985
elif error.errno == errno.ENOPROTOOPT:
1986
logger.error("SO_BINDTODEVICE not available;"
1987
" cannot bind to interface %s",
1989
elif error.errno == errno.ENODEV:
1990
logger.error("Interface %s does not exist,"
1991
" cannot bind", self.interface)
2639
# Fall back to a hard-coded value which seems to be
2641
log.warning("SO_BINDTODEVICE not found, trying 25")
2642
SO_BINDTODEVICE = 25
2644
self.socket.setsockopt(
2645
socket.SOL_SOCKET, SO_BINDTODEVICE,
2646
(self.interface + "\0").encode("utf-8"))
2647
except socket.error as error:
2648
if error.errno == errno.EPERM:
2649
log.error("No permission to bind to interface %s",
2651
elif error.errno == errno.ENOPROTOOPT:
2652
log.error("SO_BINDTODEVICE not available; cannot"
2653
" bind to interface %s", self.interface)
2654
elif error.errno == errno.ENODEV:
2655
log.error("Interface %s does not exist, cannot"
2656
" bind", self.interface)
1994
2659
# Only bind(2) the socket if we really need to.
1995
2660
if self.server_address[0] or self.server_address[1]:
2661
if self.server_address[1]:
2662
self.allow_reuse_address = True
1996
2663
if not self.server_address[0]:
1997
2664
if self.address_family == socket.AF_INET6:
1998
any_address = "::" # in6addr_any
2665
any_address = "::" # in6addr_any
2000
any_address = "0.0.0.0" # INADDR_ANY
2667
any_address = "0.0.0.0" # INADDR_ANY
2001
2668
self.server_address = (any_address,
2002
2669
self.server_address[1])
2003
2670
elif not self.server_address[1]:
2004
self.server_address = (self.server_address[0],
2671
self.server_address = (self.server_address[0], 0)
2006
2672
# if self.interface:
2007
2673
# self.server_address = (self.server_address[0],
2033
2704
self.gnutls_priority = gnutls_priority
2034
2705
IPv6_TCPServer.__init__(self, server_address,
2035
2706
RequestHandlerClass,
2036
interface = interface,
2037
use_ipv6 = use_ipv6,
2038
socketfd = socketfd)
2707
interface=interface,
2039
2711
def server_activate(self):
2040
2712
if self.enabled:
2041
2713
return socketserver.TCPServer.server_activate(self)
2043
2715
def enable(self):
2044
2716
self.enabled = True
2046
2718
def add_pipe(self, parent_pipe, proc):
2047
2719
# Call "handle_ipc" for both data and EOF events
2048
gobject.io_add_watch(parent_pipe.fileno(),
2049
gobject.IO_IN | gobject.IO_HUP,
2050
functools.partial(self.handle_ipc,
2055
def handle_ipc(self, source, condition, parent_pipe=None,
2056
proc = None, client_object=None):
2721
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2722
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2723
functools.partial(self.handle_ipc,
2724
parent_pipe=parent_pipe,
2727
def handle_ipc(self, source, condition,
2730
client_object=None):
2057
2731
# error, or the other end of multiprocessing.Pipe has closed
2058
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2732
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2059
2733
# Wait for other process to exit
2063
2737
# Read a request from the child
2064
2738
request = parent_pipe.recv()
2065
2739
command = request[0]
2067
if command == 'init':
2069
address = request[2]
2071
for c in self.clients.itervalues():
2072
if c.fingerprint == fpr:
2741
if command == "init":
2742
key_id = request[1].decode("ascii")
2743
fpr = request[2].decode("ascii")
2744
address = request[3]
2746
for c in self.clients.values():
2747
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2748
"27AE41E4649B934CA495991B7852B855"):
2750
if key_id and c.key_id == key_id:
2753
if fpr and c.fingerprint == fpr:
2076
logger.info("Client not found for fingerprint: %s, ad"
2077
"dress: %s", fpr, address)
2757
log.info("Client not found for key ID: %s, address:"
2758
" %s", key_id or fpr, address)
2078
2759
if self.use_dbus:
2079
2760
# Emit D-Bus signal
2080
mandos_dbus_service.ClientNotFound(fpr,
2761
mandos_dbus_service.ClientNotFound(key_id or fpr,
2082
2763
parent_pipe.send(False)
2085
gobject.io_add_watch(parent_pipe.fileno(),
2086
gobject.IO_IN | gobject.IO_HUP,
2087
functools.partial(self.handle_ipc,
2767
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2768
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2769
functools.partial(self.handle_ipc,
2770
parent_pipe=parent_pipe,
2772
client_object=client))
2093
2773
parent_pipe.send(True)
2094
2774
# remove the old hook in favor of the new above hook on
2097
if command == 'funcall':
2777
if command == "funcall":
2098
2778
funcname = request[1]
2099
2779
args = request[2]
2100
2780
kwargs = request[3]
2102
parent_pipe.send(('data', getattr(client_object,
2782
parent_pipe.send(("data", getattr(client_object,
2103
2783
funcname)(*args,
2106
if command == 'getattr':
2786
if command == "getattr":
2107
2787
attrname = request[1]
2108
if callable(client_object.__getattribute__(attrname)):
2109
parent_pipe.send(('function',))
2788
if isinstance(client_object.__getattribute__(attrname),
2789
collections.abc.Callable):
2790
parent_pipe.send(("function", ))
2111
parent_pipe.send(('data', client_object
2112
.__getattribute__(attrname)))
2114
if command == 'setattr':
2793
"data", client_object.__getattribute__(attrname)))
2795
if command == "setattr":
2115
2796
attrname = request[1]
2116
2797
value = request[2]
2117
2798
setattr(client_object, attrname, value)
2122
2803
def rfc3339_duration_to_delta(duration):
2123
2804
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2125
>>> rfc3339_duration_to_delta("P7D")
2126
datetime.timedelta(7)
2127
>>> rfc3339_duration_to_delta("PT60S")
2128
datetime.timedelta(0, 60)
2129
>>> rfc3339_duration_to_delta("PT60M")
2130
datetime.timedelta(0, 3600)
2131
>>> rfc3339_duration_to_delta("PT24H")
2132
datetime.timedelta(1)
2133
>>> rfc3339_duration_to_delta("P1W")
2134
datetime.timedelta(7)
2135
>>> rfc3339_duration_to_delta("PT5M30S")
2136
datetime.timedelta(0, 330)
2137
>>> rfc3339_duration_to_delta("P1DT3M20S")
2138
datetime.timedelta(1, 200)
2806
>>> timedelta = datetime.timedelta
2807
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2809
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2811
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2813
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2815
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2817
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2819
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2141
2824
# Parsing an RFC 3339 duration with regular expressions is not
2142
2825
# possible - there would have to be multiple places for the same
2143
2826
# values, like seconds. The current code, while more esoteric, is
2144
2827
# cleaner without depending on a parsing library. If Python had a
2145
2828
# built-in library for parsing we would use it, but we'd like to
2146
2829
# avoid excessive use of external libraries.
2148
2831
# New type for defining tokens, syntax, and semantics all-in-one
2149
Token = collections.namedtuple("Token",
2150
("regexp", # To match token; if
2151
# "value" is not None,
2152
# must have a "group"
2154
"value", # datetime.timedelta or
2156
"followers")) # Tokens valid after
2832
Token = collections.namedtuple("Token", (
2833
"regexp", # To match token; if "value" is not None, must have
2834
# a "group" containing digits
2835
"value", # datetime.timedelta or None
2836
"followers")) # Tokens valid after this token
2158
2837
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2159
2838
# the "duration" ABNF definition in RFC 3339, Appendix A.
2160
2839
token_end = Token(re.compile(r"$"), None, frozenset())
2161
2840
token_second = Token(re.compile(r"(\d+)S"),
2162
2841
datetime.timedelta(seconds=1),
2163
frozenset((token_end,)))
2842
frozenset((token_end, )))
2164
2843
token_minute = Token(re.compile(r"(\d+)M"),
2165
2844
datetime.timedelta(minutes=1),
2166
2845
frozenset((token_second, token_end)))
3176
log.debug("Did setuid/setgid to %s:%s", uid, gid)
2480
3177
except OSError as error:
3178
log.warning("Failed to setuid/setgid to %s:%s: %s", uid, gid,
3179
os.strerror(error.errno))
2481
3180
if error.errno != errno.EPERM:
2485
3184
# Enable all possible GnuTLS debugging
2487
3186
# "Use a log level over 10 to enable all debugging options."
2488
3187
# - GnuTLS manual
2489
gnutls.library.functions.gnutls_global_set_log_level(11)
2491
@gnutls.library.types.gnutls_log_func
3188
gnutls.global_set_log_level(11)
2492
3191
def debug_gnutls(level, string):
2493
logger.debug("GnuTLS: %s", string[:-1])
2495
(gnutls.library.functions
2496
.gnutls_global_set_log_function(debug_gnutls))
3192
log.debug("GnuTLS: %s",
3193
string[:-1].decode("utf-8", errors="replace"))
3195
gnutls.global_set_log_function(debug_gnutls)
2498
3197
# Redirect stdin so all checkers get /dev/null
2499
3198
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2500
3199
os.dup2(null, sys.stdin.fileno())
2504
3203
# Need to fork before connecting to D-Bus
2505
3204
if not foreground:
2506
3205
# Close all input and output, do double fork, etc.
2509
# multiprocessing will use threads, so before we use gobject we
2510
# need to inform gobject that threads will be used.
2511
gobject.threads_init()
3208
if gi.version_info < (3, 10, 2):
3209
# multiprocessing will use threads, so before we use GLib we
3210
# need to inform GLib that threads will be used.
2513
3213
global main_loop
2514
3214
# From the Avahi example code
2515
3215
DBusGMainLoop(set_as_default=True)
2516
main_loop = gobject.MainLoop()
3216
main_loop = GLib.MainLoop()
2517
3217
bus = dbus.SystemBus()
2518
3218
# End of Avahi example code
2521
3221
bus_name = dbus.service.BusName("se.recompile.Mandos",
2522
bus, do_not_queue=True)
2523
old_bus_name = (dbus.service.BusName
2524
("se.bsnet.fukt.Mandos", bus,
2526
except dbus.exceptions.NameExistsException as e:
2527
logger.error("Disabling D-Bus:", exc_info=e)
3224
old_bus_name = dbus.service.BusName(
3225
"se.bsnet.fukt.Mandos", bus,
3227
except dbus.exceptions.DBusException as e:
3228
log.error("Disabling D-Bus:", exc_info=e)
2528
3229
use_dbus = False
2529
3230
server_settings["use_dbus"] = False
2530
3231
tcp_server.use_dbus = False
2531
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2532
service = AvahiServiceToSyslog(name =
2533
server_settings["servicename"],
2534
servicetype = "_mandos._tcp",
2535
protocol = protocol, bus = bus)
2536
if server_settings["interface"]:
2537
service.interface = (if_nametoindex
2538
(str(server_settings["interface"])))
3233
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3234
service = AvahiServiceToSyslog(
3235
name=server_settings["servicename"],
3236
servicetype="_mandos._tcp",
3239
if server_settings["interface"]:
3240
service.interface = if_nametoindex(
3241
server_settings["interface"].encode("utf-8"))
2540
3243
global multiprocessing_manager
2541
3244
multiprocessing_manager = multiprocessing.Manager()
2543
3246
client_class = Client
2545
client_class = functools.partial(ClientDBus, bus = bus)
3248
client_class = functools.partial(ClientDBus, bus=bus)
2547
3250
client_settings = Client.config_parser(client_config)
2548
3251
old_client_settings = {}
2549
3252
clients_data = {}
2551
3254
# This is used to redirect stdout and stderr for checker processes
2553
wnull = open(os.devnull, "w") # A writable /dev/null
3256
wnull = open(os.devnull, "w") # A writable /dev/null
2554
3257
# Only used if server is running in foreground but not in debug
2556
3259
if debug or not foreground:
2559
3262
# Get client data and settings from last running state.
2560
3263
if server_settings["restore"]:
2562
3265
with open(stored_state_path, "rb") as stored_state:
2563
clients_data, old_client_settings = (pickle.load
3266
if sys.version_info.major == 2:
3267
clients_data, old_client_settings = pickle.load(
3270
bytes_clients_data, bytes_old_client_settings = (
3271
pickle.load(stored_state, encoding="bytes"))
3272
# Fix bytes to strings
3275
clients_data = {(key.decode("utf-8")
3276
if isinstance(key, bytes)
3279
bytes_clients_data.items()}
3280
del bytes_clients_data
3281
for key in clients_data:
3282
value = {(k.decode("utf-8")
3283
if isinstance(k, bytes) else k): v
3285
clients_data[key].items()}
3286
clients_data[key] = value
3288
value["client_structure"] = [
3290
if isinstance(s, bytes)
3292
value["client_structure"]]
3293
# .name, .host, and .checker_command
3294
for k in ("name", "host", "checker_command"):
3295
if isinstance(value[k], bytes):
3296
value[k] = value[k].decode("utf-8")
3297
if "key_id" not in value:
3298
value["key_id"] = ""
3299
elif "fingerprint" not in value:
3300
value["fingerprint"] = ""
3301
# old_client_settings
3303
old_client_settings = {
3304
(key.decode("utf-8")
3305
if isinstance(key, bytes)
3308
bytes_old_client_settings.items()}
3309
del bytes_old_client_settings
3310
# .host and .checker_command
3311
for value in old_client_settings.values():
3312
for attribute in ("host", "checker_command"):
3313
if isinstance(value[attribute], bytes):
3314
value[attribute] = (value[attribute]
2565
3316
os.remove(stored_state_path)
2566
3317
except IOError as e:
2567
3318
if e.errno == errno.ENOENT:
2568
logger.warning("Could not load persistent state: {0}"
2569
.format(os.strerror(e.errno)))
3319
log.warning("Could not load persistent state:"
3320
" %s", os.strerror(e.errno))
2571
logger.critical("Could not load persistent state:",
3322
log.critical("Could not load persistent state:",
2574
3325
except EOFError as e:
2575
logger.warning("Could not load persistent state: "
2576
"EOFError:", exc_info=e)
3326
log.warning("Could not load persistent state: EOFError:",
2578
3329
with PGPEngine() as pgp:
2579
for client_name, client in clients_data.iteritems():
3330
for client_name, client in clients_data.items():
2580
3331
# Skip removed clients
2581
3332
if client_name not in client_settings:
2584
3335
# Decide which value to use after restoring saved state.
2585
3336
# We have three different values: Old config file,
2586
3337
# new config file, and saved state.
2644
3391
for client_name in (set(client_settings)
2645
3392
- set(old_client_settings)):
2646
3393
clients_data[client_name] = client_settings[client_name]
2648
3395
# Create all client objects
2649
for client_name, client in clients_data.iteritems():
3396
for client_name, client in clients_data.items():
2650
3397
tcp_server.clients[client_name] = client_class(
2651
name = client_name, settings = client,
2652
server_settings = server_settings)
3400
server_settings=server_settings)
2654
3402
if not tcp_server.clients:
2655
logger.warning("No clients defined")
3403
log.warning("No clients defined")
2657
3405
if not foreground:
2658
3406
if pidfile is not None:
2662
pidfile.write(str(pid) + "\n".encode("utf-8"))
3410
print(pid, file=pidfile)
2663
3411
except IOError:
2664
logger.error("Could not write to file %r with PID %d",
3412
log.error("Could not write to file %r with PID %d",
2667
3415
del pidfilename
2669
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2670
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3417
for termsig in (signal.SIGHUP, signal.SIGTERM):
3418
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3419
lambda: main_loop.quit() and False)
2673
@alternate_dbus_interfaces({"se.recompile.Mandos":
2674
"se.bsnet.fukt.Mandos"})
2675
class MandosDBusService(DBusObjectWithProperties):
3423
@alternate_dbus_interfaces(
3424
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3425
class MandosDBusService(DBusObjectWithObjectManager):
2676
3426
"""A D-Bus proxy object"""
2677
3428
def __init__(self):
2678
3429
dbus.service.Object.__init__(self, bus, "/")
2679
3431
_interface = "se.recompile.Mandos"
2681
@dbus_interface_annotations(_interface)
2683
return { "org.freedesktop.DBus.Property"
2684
".EmitsChangedSignal":
2687
3433
@dbus.service.signal(_interface, signature="o")
2688
3434
def ClientAdded(self, objpath):
2692
3438
@dbus.service.signal(_interface, signature="ss")
2693
def ClientNotFound(self, fingerprint, address):
3439
def ClientNotFound(self, key_id, address):
3443
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2697
3445
@dbus.service.signal(_interface, signature="os")
2698
3446
def ClientRemoved(self, objpath, name):
3450
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2702
3452
@dbus.service.method(_interface, out_signature="ao")
2703
3453
def GetAllClients(self):
2705
return dbus.Array(c.dbus_object_path
2707
tcp_server.clients.itervalues())
3455
return dbus.Array(c.dbus_object_path for c in
3456
tcp_server.clients.values())
3458
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2709
3460
@dbus.service.method(_interface,
2710
3461
out_signature="a{oa{sv}}")
2711
3462
def GetAllClientsWithProperties(self):
2713
3464
return dbus.Dictionary(
2714
((c.dbus_object_path, c.GetAll(""))
2715
for c in tcp_server.clients.itervalues()),
3465
{c.dbus_object_path: c.GetAll(
3466
"se.recompile.Mandos.Client")
3467
for c in tcp_server.clients.values()},
2716
3468
signature="oa{sv}")
2718
3470
@dbus.service.method(_interface, in_signature="o")
2719
3471
def RemoveClient(self, object_path):
2721
for c in tcp_server.clients.itervalues():
3473
for c in tcp_server.clients.values():
2722
3474
if c.dbus_object_path == object_path:
2723
3475
del tcp_server.clients[c.name]
2724
3476
c.remove_from_connection()
2725
# Don't signal anything except ClientRemoved
3477
# Don't signal the disabling
2726
3478
c.disable(quiet=True)
2728
self.ClientRemoved(object_path, c.name)
3479
# Emit D-Bus signal for removal
3480
self.client_removed_signal(c)
2730
3482
raise KeyError(object_path)
3486
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3487
out_signature="a{oa{sa{sv}}}")
3488
def GetManagedObjects(self):
3490
return dbus.Dictionary(
3491
{client.dbus_object_path:
3493
{interface: client.GetAll(interface)
3495
client._get_all_interface_names()})
3496
for client in tcp_server.clients.values()})
3498
def client_added_signal(self, client):
3499
"""Send the new standard signal and the old signal"""
3501
# New standard signal
3502
self.InterfacesAdded(
3503
client.dbus_object_path,
3505
{interface: client.GetAll(interface)
3507
client._get_all_interface_names()}))
3509
self.ClientAdded(client.dbus_object_path)
3511
def client_removed_signal(self, client):
3512
"""Send the new standard signal and the old signal"""
3514
# New standard signal
3515
self.InterfacesRemoved(
3516
client.dbus_object_path,
3517
client._get_all_interface_names())
3519
self.ClientRemoved(client.dbus_object_path,
2734
3522
mandos_dbus_service = MandosDBusService()
3524
# Save modules to variables to exempt the modules from being
3525
# unloaded before the function registered with atexit() is run.
3526
mp = multiprocessing
2737
3530
"Cleanup function; run on exit"
2740
multiprocessing.active_children()
3534
mp.active_children()
2742
3536
if not (tcp_server.clients or client_settings):
2745
3539
# Store client before exiting. Secrets are encrypted with key
2746
3540
# based on what config file has. If config file is
2747
3541
# removed/edited, old secret will thus be unrecovable.
2749
3543
with PGPEngine() as pgp:
2750
for client in tcp_server.clients.itervalues():
3544
for client in tcp_server.clients.values():
2751
3545
key = client_settings[client.name]["secret"]
2752
3546
client.encrypted_secret = pgp.encrypt(client.secret,
2754
3548
client_dict = {}
2756
3550
# A list of attributes that can not be pickled
2758
exclude = set(("bus", "changedstate", "secret",
2759
"checker", "server_settings"))
2760
for name, typ in (inspect.getmembers
2761
(dbus.service.Object)):
3552
exclude = {"bus", "changedstate", "secret",
3553
"checker", "server_settings"}
3554
for name, typ in inspect.getmembers(dbus.service
2762
3556
exclude.add(name)
2764
3558
client_dict["encrypted_secret"] = (client
2765
3559
.encrypted_secret)
2766
3560
for attr in client.client_structure:
2767
3561
if attr not in exclude:
2768
3562
client_dict[attr] = getattr(client, attr)
2770
3564
clients[client.name] = client_dict
2771
3565
del client_settings[client.name]["secret"]
2774
with (tempfile.NamedTemporaryFile
2775
(mode='wb', suffix=".pickle", prefix='clients-',
2776
dir=os.path.dirname(stored_state_path),
2777
delete=False)) as stored_state:
2778
pickle.dump((clients, client_settings), stored_state)
2779
tempname=stored_state.name
3568
with tempfile.NamedTemporaryFile(
3572
dir=os.path.dirname(stored_state_path),
3573
delete=False) as stored_state:
3574
pickle.dump((clients, client_settings), stored_state,
3576
tempname = stored_state.name
2780
3577
os.rename(tempname, stored_state_path)
2781
3578
except (IOError, OSError) as e:
2785
3582
except NameError:
2787
3584
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2788
logger.warning("Could not save persistent state: {0}"
2789
.format(os.strerror(e.errno)))
3585
log.warning("Could not save persistent state: %s",
3586
os.strerror(e.errno))
2791
logger.warning("Could not save persistent state:",
3588
log.warning("Could not save persistent state:",
2795
3592
# Delete all clients, and settings from config
2796
3593
while tcp_server.clients:
2797
3594
name, client = tcp_server.clients.popitem()
2799
3596
client.remove_from_connection()
2800
# Don't signal anything except ClientRemoved
3597
# Don't signal the disabling
2801
3598
client.disable(quiet=True)
3599
# Emit D-Bus signal for removal
2804
mandos_dbus_service.ClientRemoved(client
3601
mandos_dbus_service.client_removed_signal(client)
2807
3602
client_settings.clear()
2809
3604
atexit.register(cleanup)
2811
for client in tcp_server.clients.itervalues():
3606
for client in tcp_server.clients.values():
2814
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3608
# Emit D-Bus signal for adding
3609
mandos_dbus_service.client_added_signal(client)
2815
3610
# Need to initiate checking of clients
2816
3611
if client.enabled:
2817
3612
client.init_checker()
2819
3614
tcp_server.enable()
2820
3615
tcp_server.server_activate()
2822
3617
# Find out what port we got
2823
service.port = tcp_server.socket.getsockname()[1]
3619
service.port = tcp_server.socket.getsockname()[1]
2825
logger.info("Now listening on address %r, port %d,"
2826
" flowinfo %d, scope_id %d",
2827
*tcp_server.socket.getsockname())
3621
log.info("Now listening on address %r, port %d, flowinfo %d,"
3622
" scope_id %d", *tcp_server.socket.getsockname())
2829
logger.info("Now listening on address %r, port %d",
2830
*tcp_server.socket.getsockname())
2832
#service.interface = tcp_server.socket.getsockname()[3]
3624
log.info("Now listening on address %r, port %d",
3625
*tcp_server.socket.getsockname())
3627
# service.interface = tcp_server.socket.getsockname()[3]
2835
# From the Avahi example code
2838
except dbus.exceptions.DBusException as error:
2839
logger.critical("D-Bus Exception", exc_info=error)
2842
# End of Avahi example code
2844
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2845
lambda *args, **kwargs:
2846
(tcp_server.handle_request
2847
(*args[2:], **kwargs) or True))
2849
logger.debug("Starting main loop")
3631
# From the Avahi example code
3634
except dbus.exceptions.DBusException as error:
3635
log.critical("D-Bus Exception", exc_info=error)
3638
# End of Avahi example code
3641
GLib.IOChannel.unix_new(tcp_server.fileno()),
3642
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3643
lambda *args, **kwargs: (tcp_server.handle_request
3644
(*args[2:], **kwargs) or True))
3646
log.debug("Starting main loop")
2850
3647
main_loop.run()
2851
3648
except AvahiError as error:
2852
logger.critical("Avahi Error", exc_info=error)
3649
log.critical("Avahi Error", exc_info=error)
2855
3652
except KeyboardInterrupt:
2857
3654
print("", file=sys.stderr)
2858
logger.debug("Server received KeyboardInterrupt")
2859
logger.debug("Server exiting")
3655
log.debug("Server received KeyboardInterrupt")
3656
log.debug("Server exiting")
2860
3657
# Must run before the D-Bus bus name gets deregistered
2863
if __name__ == '__main__':
3661
def parse_test_args():
3662
# type: () -> argparse.Namespace
3663
parser = argparse.ArgumentParser(add_help=False)
3664
parser.add_argument("--check", action="store_true")
3665
parser.add_argument("--prefix", )
3666
args, unknown_args = parser.parse_known_args()
3668
# Remove test options from sys.argv
3669
sys.argv[1:] = unknown_args
3672
# Add all tests from doctest strings
3673
def load_tests(loader, tests, none):
3675
tests.addTests(doctest.DocTestSuite())
3678
if __name__ == "__main__":
3679
options = parse_test_args()
3682
extra_test_prefix = options.prefix
3683
if extra_test_prefix is not None:
3684
if not (unittest.main(argv=[""], exit=False)
3685
.result.wasSuccessful()):
3687
class ExtraTestLoader(unittest.TestLoader):
3688
testMethodPrefix = extra_test_prefix
3689
# Call using ./scriptname --test [--verbose]
3690
unittest.main(argv=[""], testLoader=ExtraTestLoader())
3692
unittest.main(argv=[""])
3700
# (lambda (&optional extra)
3701
# (if (not (funcall run-tests-in-test-buffer default-directory
3703
# (funcall show-test-buffer-in-test-window)
3704
# (funcall remove-test-window)
3705
# (if extra (message "Extra tests run successfully!"))))
3706
# run-tests-in-test-buffer:
3707
# (lambda (dir &optional extra)
3708
# (with-current-buffer (get-buffer-create "*Test*")
3709
# (setq buffer-read-only nil
3710
# default-directory dir)
3712
# (compilation-mode))
3713
# (let ((process-result
3714
# (let ((inhibit-read-only t))
3715
# (process-file-shell-command
3716
# (funcall get-command-line extra) nil "*Test*"))))
3717
# (and (numberp process-result)
3718
# (= process-result 0))))
3720
# (lambda (&optional extra)
3721
# (let ((quoted-script
3722
# (shell-quote-argument (funcall get-script-name))))
3724
# (concat "%s --check" (if extra " --prefix=atest" ""))
3728
# (if (fboundp 'file-local-name)
3729
# (file-local-name (buffer-file-name))
3730
# (or (file-remote-p (buffer-file-name) 'localname)
3731
# (buffer-file-name))))
3732
# remove-test-window:
3734
# (let ((test-window (get-buffer-window "*Test*")))
3735
# (if test-window (delete-window test-window))))
3736
# show-test-buffer-in-test-window:
3738
# (when (not (get-buffer-window-list "*Test*"))
3739
# (setq next-error-last-buffer (get-buffer "*Test*"))
3740
# (let* ((side (if (>= (window-width) 146) 'right 'bottom))
3741
# (display-buffer-overriding-action
3742
# `((display-buffer-in-side-window) (side . ,side)
3743
# (window-height . fit-window-to-buffer)
3744
# (window-width . fit-window-to-buffer))))
3745
# (display-buffer "*Test*"))))
3748
# (let* ((run-extra-tests (lambda () (interactive)
3749
# (funcall run-tests t)))
3750
# (inner-keymap `(keymap (116 . ,run-extra-tests))) ; t
3751
# (outer-keymap `(keymap (3 . ,inner-keymap)))) ; C-c
3752
# (setq minor-mode-overriding-map-alist
3753
# (cons `(run-tests . ,outer-keymap)
3754
# minor-mode-overriding-map-alist)))
3755
# (add-hook 'after-save-hook run-tests 90 t))