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- Committer: Teddy Hogeborn
- Date: 2016-06-23 20:10:40 UTC
- mto: This revision was merged to the branch mainline in revision 861.
- Revision ID: teddy@recompile.se-20160623201040-33k2tpdbnxjqfjcp
Tags: version-1.7.10-1
* Makefile (version): Change to 1.7.10.
* NEWS (Version 1.7.10): Add new entry.
* debian/changelog (1.7.10-1): - '' -
* NEWS (Version 1.7.10): Add new entry.
* debian/changelog (1.7.10-1): - '' -
- files added:
- initramfs-tools-hook-conf
- files removed:
- debian/mandos-client.templates
- files modified:
- DBUS-API
added
removed
mandos
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1
#!/usr/bin/python
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# -*- mode: python; coding: utf-8 -*-
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#
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#
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# Mandos server - give out binary blobs to connecting clients.
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#
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#
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# This program is partly derived from an example program for an Avahi
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# service publisher, downloaded from
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# <http://avahi.org/wiki/PythonPublishExample>. This includes the
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# methods "add", "remove", "server_state_changed",
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# "entry_group_state_changed", "cleanup", and "activate" in the
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# "AvahiService" class, and some lines in "main".
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#
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#
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# Everything else is
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# Copyright © 2008-2019 Teddy Hogeborn
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# Copyright © 2008-2019 Björn Påhlsson
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#
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# This file is part of Mandos.
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#
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# Mandos is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by
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# Copyright © 2008-2016 Teddy Hogeborn
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# Copyright © 2008-2016 Björn Påhlsson
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Mandos is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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#
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# You should have received a copy of the GNU General Public License
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# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
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#
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# Contact the authors at <mandos@recompile.se>.
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#
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#
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from __future__ import (division, absolute_import, print_function,
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unicode_literals)
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if sys.version_info.major == 2:
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str = unicode
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version = "1.8.3"
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version = "1.7.10"
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stored_state_file = "clients.pickle"
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logger = logging.getLogger()
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if_nametoindex = ctypes.cdll.LoadLibrary(
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ctypes.util.find_library("c")).if_nametoindex
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except (OSError, AttributeError):
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def if_nametoindex(interface):
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"Get an interface index the hard way, i.e. using fcntl()"
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SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
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def initlogger(debug, level=logging.WARNING):
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"""init logger and add loglevel"""
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global syslogger
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syslogger = (logging.handlers.SysLogHandler(
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facility=logging.handlers.SysLogHandler.LOG_DAEMON,
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address="/dev/log"))
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facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = "/dev/log"))
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syslogger.setFormatter(logging.Formatter
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('Mandos [%(process)d]: %(levelname)s:'
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' %(message)s'))
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logger.addHandler(syslogger)
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if debug:
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
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class PGPEngine(object):
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"""A simple class for OpenPGP symmetric encryption & decryption"""
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def __init__(self):
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self.tempdir = tempfile.mkdtemp(prefix="mandos-")
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self.gpg = "gpg"
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# Only GPG version 1 has the --no-use-agent option.
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if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
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self.gnupgargs.append("--no-use-agent")
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def __enter__(self):
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return self
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def __exit__(self, exc_type, exc_value, traceback):
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self._cleanup()
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return False
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def __del__(self):
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self._cleanup()
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def _cleanup(self):
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if self.tempdir is not None:
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# Delete contents of tempdir
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for root, dirs, files in os.walk(self.tempdir,
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topdown=False):
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topdown = False):
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for filename in files:
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os.remove(os.path.join(root, filename))
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for dirname in dirs:
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# Remove tempdir
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os.rmdir(self.tempdir)
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self.tempdir = None
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def password_encode(self, password):
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# Passphrase can not be empty and can not contain newlines or
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# NUL bytes. So we prefix it and hex encode it.
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.replace(b"\n", b"\\n")
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.replace(b"\0", b"\\x00"))
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return encoded
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def encrypt(self, data, password):
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passphrase = self.password_encode(password)
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with tempfile.NamedTemporaryFile(
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'--passphrase-file',
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passfile.name]
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+ self.gnupgargs,
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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ciphertext, err = proc.communicate(input=data)
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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(
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dir=self.tempdir) as passfile:
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dir = self.tempdir) as passfile:
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passfile.write(passphrase)
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passfile.flush()
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proc = subprocess.Popen([self.gpg, '--decrypt',
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'--passphrase-file',
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passfile.name]
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+ self.gnupgargs,
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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decrypted_plaintext, err = proc.communicate(input=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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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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class avahi(object):
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"""This isn't so much a class as it is a module-like namespace."""
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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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class Avahi(object):
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"""This isn't so much a class as it is a module-like namespace.
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It is instantiated once, and simulates having an Avahi module."""
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IF_UNSPEC = -1 # avahi-common/address.h
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PROTO_UNSPEC = -1 # avahi-common/address.h
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PROTO_INET = 0 # avahi-common/address.h
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PROTO_INET6 = 1 # avahi-common/address.h
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DBUS_NAME = "org.freedesktop.Avahi"
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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
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DBUS_PATH_SERVER = "/"
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@staticmethod
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def string_array_to_txt_array(t):
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def string_array_to_txt_array(self, t):
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return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
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for s in t), signature="ay")
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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
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SERVER_INVALID = 0 # avahi-common/defs.h
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SERVER_REGISTERING = 1 # avahi-common/defs.h
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SERVER_RUNNING = 2 # avahi-common/defs.h
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SERVER_COLLISION = 3 # avahi-common/defs.h
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SERVER_FAILURE = 4 # avahi-common/defs.h
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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
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SERVER_INVALID = 0 # avahi-common/defs.h
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SERVER_REGISTERING = 1 # avahi-common/defs.h
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SERVER_RUNNING = 2 # avahi-common/defs.h
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SERVER_COLLISION = 3 # avahi-common/defs.h
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SERVER_FAILURE = 4 # avahi-common/defs.h
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avahi = Avahi()
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class AvahiError(Exception):
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def __init__(self, value, *args, **kwargs):
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class AvahiService(object):
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"""An Avahi (Zeroconf) service.
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Attributes:
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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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server: D-Bus Server
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bus: dbus.SystemBus()
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"""
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def __init__(self,
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interface=avahi.IF_UNSPEC,
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name=None,
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servicetype=None,
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port=None,
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TXT=None,
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domain="",
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host="",
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max_renames=32768,
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protocol=avahi.PROTO_UNSPEC,
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bus=None):
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interface = avahi.IF_UNSPEC,
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name = None,
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servicetype = None,
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port = None,
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TXT = None,
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domain = "",
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host = "",
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max_renames = 32768,
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protocol = avahi.PROTO_UNSPEC,
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bus = None):
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self.interface = interface
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self.name = name
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self.type = servicetype
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self.server = None
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self.bus = bus
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self.entry_group_state_changed_match = None
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def rename(self, remove=True):
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"""Derived from the Avahi example code"""
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if self.rename_count >= self.max_renames:
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logger.critical("D-Bus Exception", exc_info=error)
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self.cleanup()
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os._exit(1)
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def remove(self):
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"""Derived from the Avahi example code"""
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if self.entry_group_state_changed_match is not None:
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self.entry_group_state_changed_match = None
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if self.group is not None:
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self.group.Reset()
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def add(self):
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"""Derived from the Avahi example code"""
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self.remove()
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dbus.UInt16(self.port),
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avahi.string_array_to_txt_array(self.TXT))
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self.group.Commit()
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def entry_group_state_changed(self, state, error):
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"""Derived from the Avahi example code"""
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logger.debug("Avahi entry group state change: %i", state)
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if state == avahi.ENTRY_GROUP_ESTABLISHED:
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logger.debug("Zeroconf service established.")
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elif state == avahi.ENTRY_GROUP_COLLISION:
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logger.critical("Avahi: Error in group state changed %s",
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str(error))
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raise AvahiGroupError("State changed: {!s}".format(error))
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def cleanup(self):
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"""Derived from the Avahi example code"""
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if self.group is not None:
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pass
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self.group = None
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self.remove()
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def server_state_changed(self, state, error=None):
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"""Derived from the Avahi example code"""
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logger.debug("Avahi server state change: %i", state)
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logger.debug("Unknown state: %r", state)
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else:
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logger.debug("Unknown state: %r: %r", state, error)
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def activate(self):
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"""Derived from the Avahi example code"""
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if self.server is None:
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class AvahiServiceToSyslog(AvahiService):
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def rename(self, *args, **kwargs):
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"""Add the new name to the syslog messages"""
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ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
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ret = AvahiService.rename(self, *args, **kwargs)
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syslogger.setFormatter(logging.Formatter(
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'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
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.format(self.name)))
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return ret
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# Pretend that we have a GnuTLS module
506
class gnutls(object):
507
"""This isn't so much a class as it is a module-like namespace."""
508
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library = ctypes.util.find_library("gnutls")
510
if library is None:
511
library = ctypes.util.find_library("gnutls-deb0")
512
_library = ctypes.cdll.LoadLibrary(library)
513
del library
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class GnuTLS(object):
503
"""This isn't so much a class as it is a module-like namespace.
504
It is instantiated once, and simulates having a GnuTLS module."""
505
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_library = ctypes.cdll.LoadLibrary(
507
ctypes.util.find_library("gnutls"))
508
_need_version = b"3.3.0"
509
def __init__(self):
510
# Need to use class name "GnuTLS" here, since this method is
511
# called before the assignment to the "gnutls" global variable
512
# happens.
513
if GnuTLS.check_version(self._need_version) is None:
514
raise GnuTLS.Error("Needs GnuTLS {} or later"
515
.format(self._need_version))
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# Unless otherwise indicated, the constants and types below are
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# all from the gnutls/gnutls.h C header file.
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518
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# Constants
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E_SUCCESS = 0
520
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E_INTERRUPTED = -52
521
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E_AGAIN = -28
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CRT_OPENPGP = 2
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CRT_RAWPK = 3
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525
CLIENT = 2
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SHUT_RDWR = 0
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527
CRD_CERTIFICATE = 1
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E_NO_CERTIFICATE_FOUND = -49
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X509_FMT_DER = 0
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NO_TICKETS = 1<<10
530
ENABLE_RAWPK = 1<<18
531
CTYPE_PEERS = 3
532
KEYID_USE_SHA256 = 1 # gnutls/x509.h
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OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
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530
535
531
# Types
536
532
class session_int(ctypes.Structure):
537
533
_fields_ = []
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session_t = ctypes.POINTER(session_int)
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540
535
class certificate_credentials_st(ctypes.Structure):
541
536
_fields_ = []
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certificate_credentials_t = ctypes.POINTER(
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538
certificate_credentials_st)
544
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certificate_type_t = ctypes.c_int
545
546
540
class datum_t(ctypes.Structure):
547
541
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
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('size', ctypes.c_uint)]
549
550
543
class openpgp_crt_int(ctypes.Structure):
551
544
_fields_ = []
552
545
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
553
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
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openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
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547
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
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548
credentials_type_t = ctypes.c_int
556
549
transport_ptr_t = ctypes.c_void_p
557
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close_request_t = ctypes.c_int
558
551
559
552
# Exceptions
560
553
class Error(Exception):
561
def __init__(self, message=None, code=None, args=()):
554
# We need to use the class name "GnuTLS" here, since this
555
# exception might be raised from within GnuTLS.__init__,
556
# which is called before the assignment to the "gnutls"
557
# global variable has happened.
558
def __init__(self, message = None, code = None, args=()):
562
559
# Default usage is by a message string, but if a return
563
560
# code is passed, convert it to a string with
564
561
# gnutls.strerror()
565
562
self.code = code
566
563
if message is None and code is not None:
567
message = gnutls.strerror(code)
568
return super(gnutls.Error, self).__init__(
564
message = GnuTLS.strerror(code)
565
return super(GnuTLS.Error, self).__init__(
569
566
message, *args)
570
567
571
568
class CertificateSecurityError(Error):
572
569
pass
573
570
574
571
# Classes
575
572
class Credentials(object):
576
573
def __init__(self):
578
575
gnutls.certificate_allocate_credentials(
579
576
ctypes.byref(self._c_object))
580
577
self.type = gnutls.CRD_CERTIFICATE
581
578
582
579
def __del__(self):
583
580
gnutls.certificate_free_credentials(self._c_object)
584
581
585
582
class ClientSession(object):
586
def __init__(self, socket, credentials=None):
583
def __init__(self, socket, credentials = None):
587
584
self._c_object = gnutls.session_t()
588
gnutls_flags = gnutls.CLIENT
589
if gnutls.check_version("3.5.6"):
590
gnutls_flags |= gnutls.NO_TICKETS
591
if gnutls.has_rawpk:
592
gnutls_flags |= gnutls.ENABLE_RAWPK
593
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
594
del gnutls_flags
585
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
595
586
gnutls.set_default_priority(self._c_object)
596
587
gnutls.transport_set_ptr(self._c_object, socket.fileno())
597
588
gnutls.handshake_set_private_extensions(self._c_object,
603
594
ctypes.cast(credentials._c_object,
604
595
ctypes.c_void_p))
605
596
self.credentials = credentials
606
597
607
598
def __del__(self):
608
599
gnutls.deinit(self._c_object)
609
600
610
601
def handshake(self):
611
602
return gnutls.handshake(self._c_object)
612
603
613
604
def send(self, data):
614
605
data = bytes(data)
615
606
data_len = len(data)
617
608
data_len -= gnutls.record_send(self._c_object,
618
609
data[-data_len:],
619
610
data_len)
620
611
621
612
def bye(self):
622
613
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
623
614
624
615
# Error handling functions
625
616
def _error_code(result):
626
617
"""A function to raise exceptions on errors, suitable
628
619
if result >= 0:
629
620
return result
630
621
if result == gnutls.E_NO_CERTIFICATE_FOUND:
631
raise gnutls.CertificateSecurityError(code=result)
632
raise gnutls.Error(code=result)
633
622
raise gnutls.CertificateSecurityError(code = result)
623
raise gnutls.Error(code = result)
624
634
625
def _retry_on_error(result, func, arguments):
635
626
"""A function to retry on some errors, suitable
636
627
for the 'errcheck' attribute on ctypes functions"""
639
630
return _error_code(result)
640
631
result = func(*arguments)
641
632
return result
642
633
643
634
# Unless otherwise indicated, the function declarations below are
644
635
# all from the gnutls/gnutls.h C header file.
645
636
646
637
# Functions
647
638
priority_set_direct = _library.gnutls_priority_set_direct
648
639
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
649
640
ctypes.POINTER(ctypes.c_char_p)]
650
641
priority_set_direct.restype = _error_code
651
642
652
643
init = _library.gnutls_init
653
644
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
654
645
init.restype = _error_code
655
646
656
647
set_default_priority = _library.gnutls_set_default_priority
657
648
set_default_priority.argtypes = [session_t]
658
649
set_default_priority.restype = _error_code
659
650
660
651
record_send = _library.gnutls_record_send
661
652
record_send.argtypes = [session_t, ctypes.c_void_p,
662
653
ctypes.c_size_t]
663
654
record_send.restype = ctypes.c_ssize_t
664
655
record_send.errcheck = _retry_on_error
665
656
666
657
certificate_allocate_credentials = (
667
658
_library.gnutls_certificate_allocate_credentials)
668
659
certificate_allocate_credentials.argtypes = [
669
660
ctypes.POINTER(certificate_credentials_t)]
670
661
certificate_allocate_credentials.restype = _error_code
671
662
672
663
certificate_free_credentials = (
673
664
_library.gnutls_certificate_free_credentials)
674
certificate_free_credentials.argtypes = [
675
certificate_credentials_t]
665
certificate_free_credentials.argtypes = [certificate_credentials_t]
676
666
certificate_free_credentials.restype = None
677
667
678
668
handshake_set_private_extensions = (
679
669
_library.gnutls_handshake_set_private_extensions)
680
670
handshake_set_private_extensions.argtypes = [session_t,
681
671
ctypes.c_int]
682
672
handshake_set_private_extensions.restype = None
683
673
684
674
credentials_set = _library.gnutls_credentials_set
685
675
credentials_set.argtypes = [session_t, credentials_type_t,
686
676
ctypes.c_void_p]
687
677
credentials_set.restype = _error_code
688
678
689
679
strerror = _library.gnutls_strerror
690
680
strerror.argtypes = [ctypes.c_int]
691
681
strerror.restype = ctypes.c_char_p
692
682
693
683
certificate_type_get = _library.gnutls_certificate_type_get
694
684
certificate_type_get.argtypes = [session_t]
695
685
certificate_type_get.restype = _error_code
696
686
697
687
certificate_get_peers = _library.gnutls_certificate_get_peers
698
688
certificate_get_peers.argtypes = [session_t,
699
689
ctypes.POINTER(ctypes.c_uint)]
700
690
certificate_get_peers.restype = ctypes.POINTER(datum_t)
701
691
702
692
global_set_log_level = _library.gnutls_global_set_log_level
703
693
global_set_log_level.argtypes = [ctypes.c_int]
704
694
global_set_log_level.restype = None
705
695
706
696
global_set_log_function = _library.gnutls_global_set_log_function
707
697
global_set_log_function.argtypes = [log_func]
708
698
global_set_log_function.restype = None
709
699
710
700
deinit = _library.gnutls_deinit
711
701
deinit.argtypes = [session_t]
712
702
deinit.restype = None
713
703
714
704
handshake = _library.gnutls_handshake
715
705
handshake.argtypes = [session_t]
716
706
handshake.restype = _error_code
717
707
handshake.errcheck = _retry_on_error
718
708
719
709
transport_set_ptr = _library.gnutls_transport_set_ptr
720
710
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
721
711
transport_set_ptr.restype = None
722
712
723
713
bye = _library.gnutls_bye
724
714
bye.argtypes = [session_t, close_request_t]
725
715
bye.restype = _error_code
726
716
bye.errcheck = _retry_on_error
727
717
728
718
check_version = _library.gnutls_check_version
729
719
check_version.argtypes = [ctypes.c_char_p]
730
720
check_version.restype = ctypes.c_char_p
731
732
_need_version = b"3.3.0"
733
if check_version(_need_version) is None:
734
raise self.Error("Needs GnuTLS {} or later"
735
.format(_need_version))
736
737
_tls_rawpk_version = b"3.6.6"
738
has_rawpk = bool(check_version(_tls_rawpk_version))
739
740
if has_rawpk:
741
# Types
742
class pubkey_st(ctypes.Structure):
743
_fields = []
744
pubkey_t = ctypes.POINTER(pubkey_st)
745
746
x509_crt_fmt_t = ctypes.c_int
747
748
# All the function declarations below are from gnutls/abstract.h
749
pubkey_init = _library.gnutls_pubkey_init
750
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
751
pubkey_init.restype = _error_code
752
753
pubkey_import = _library.gnutls_pubkey_import
754
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
755
x509_crt_fmt_t]
756
pubkey_import.restype = _error_code
757
758
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
759
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
760
ctypes.POINTER(ctypes.c_ubyte),
761
ctypes.POINTER(ctypes.c_size_t)]
762
pubkey_get_key_id.restype = _error_code
763
764
pubkey_deinit = _library.gnutls_pubkey_deinit
765
pubkey_deinit.argtypes = [pubkey_t]
766
pubkey_deinit.restype = None
767
else:
768
# All the function declarations below are from gnutls/openpgp.h
769
770
openpgp_crt_init = _library.gnutls_openpgp_crt_init
771
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
772
openpgp_crt_init.restype = _error_code
773
774
openpgp_crt_import = _library.gnutls_openpgp_crt_import
775
openpgp_crt_import.argtypes = [openpgp_crt_t,
776
ctypes.POINTER(datum_t),
777
openpgp_crt_fmt_t]
778
openpgp_crt_import.restype = _error_code
779
780
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
781
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
782
ctypes.POINTER(ctypes.c_uint)]
783
openpgp_crt_verify_self.restype = _error_code
784
785
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
786
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
787
openpgp_crt_deinit.restype = None
788
789
openpgp_crt_get_fingerprint = (
790
_library.gnutls_openpgp_crt_get_fingerprint)
791
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
792
ctypes.c_void_p,
793
ctypes.POINTER(
794
ctypes.c_size_t)]
795
openpgp_crt_get_fingerprint.restype = _error_code
796
797
if check_version("3.6.4"):
798
certificate_type_get2 = _library.gnutls_certificate_type_get2
799
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
800
certificate_type_get2.restype = _error_code
801
721
722
# All the function declarations below are from gnutls/openpgp.h
723
724
openpgp_crt_init = _library.gnutls_openpgp_crt_init
725
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
726
openpgp_crt_init.restype = _error_code
727
728
openpgp_crt_import = _library.gnutls_openpgp_crt_import
729
openpgp_crt_import.argtypes = [openpgp_crt_t,
730
ctypes.POINTER(datum_t),
731
openpgp_crt_fmt_t]
732
openpgp_crt_import.restype = _error_code
733
734
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
735
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
736
ctypes.POINTER(ctypes.c_uint)]
737
openpgp_crt_verify_self.restype = _error_code
738
739
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
740
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
741
openpgp_crt_deinit.restype = None
742
743
openpgp_crt_get_fingerprint = (
744
_library.gnutls_openpgp_crt_get_fingerprint)
745
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
746
ctypes.c_void_p,
747
ctypes.POINTER(
748
ctypes.c_size_t)]
749
openpgp_crt_get_fingerprint.restype = _error_code
750
802
751
# Remove non-public functions
803
752
del _error_code, _retry_on_error
804
753
# Create the global "gnutls" object, simulating a module
754
gnutls = GnuTLS()
805
755
806
756
def call_pipe(connection, # : multiprocessing.Connection
807
757
func, *args, **kwargs):
808
758
"""This function is meant to be called by multiprocessing.Process
809
759
810
760
This function runs func(*args, **kwargs), and writes the resulting
811
761
return value on the provided multiprocessing.Connection.
812
762
"""
813
763
connection.send(func(*args, **kwargs))
814
764
connection.close()
815
765
816
817
766
class Client(object):
818
767
"""A representation of a client host served by this server.
819
768
820
769
Attributes:
821
770
approved: bool(); 'None' if not yet approved/disapproved
822
771
approval_delay: datetime.timedelta(); Time to wait for approval
837
786
disable_initiator_tag: a GLib event source tag, or None
838
787
enabled: bool()
839
788
fingerprint: string (40 or 32 hexadecimal digits); used to
840
uniquely identify an OpenPGP client
841
key_id: string (64 hexadecimal digits); used to uniquely identify
842
a client using raw public keys
789
uniquely identify the client
843
790
host: string; available for use by the checker command
844
791
interval: datetime.timedelta(); How often to start a new checker
845
792
last_approval_request: datetime.datetime(); (UTC) or None
861
808
disabled, or None
862
809
server_settings: The server_settings dict from main()
863
810
"""
864
811
865
812
runtime_expansions = ("approval_delay", "approval_duration",
866
"created", "enabled", "expires", "key_id",
813
"created", "enabled", "expires",
867
814
"fingerprint", "host", "interval",
868
815
"last_approval_request", "last_checked_ok",
869
816
"last_enabled", "name", "timeout")
878
825
"approved_by_default": "True",
879
826
"enabled": "True",
880
827
}
881
828
882
829
@staticmethod
883
830
def config_parser(config):
884
831
"""Construct a new dict of client settings of this form:
891
838
for client_name in config.sections():
892
839
section = dict(config.items(client_name))
893
840
client = settings[client_name] = {}
894
841
895
842
client["host"] = section["host"]
896
843
# Reformat values from string types to Python types
897
844
client["approved_by_default"] = config.getboolean(
898
845
client_name, "approved_by_default")
899
846
client["enabled"] = config.getboolean(client_name,
900
847
"enabled")
901
902
# Uppercase and remove spaces from key_id and fingerprint
903
# for later comparison purposes with return value from the
904
# key_id() and fingerprint() functions
905
client["key_id"] = (section.get("key_id", "").upper()
906
.replace(" ", ""))
848
849
# Uppercase and remove spaces from fingerprint for later
850
# comparison purposes with return value from the
851
# fingerprint() function
907
852
client["fingerprint"] = (section["fingerprint"].upper()
908
853
.replace(" ", ""))
909
854
if "secret" in section:
930
875
client["last_approval_request"] = None
931
876
client["last_checked_ok"] = None
932
877
client["last_checker_status"] = -2
933
878
934
879
return settings
935
936
def __init__(self, settings, name=None, server_settings=None):
880
881
def __init__(self, settings, name = None, server_settings=None):
937
882
self.name = name
938
883
if server_settings is None:
939
884
server_settings = {}
941
886
# adding all client settings
942
887
for setting, value in settings.items():
943
888
setattr(self, setting, value)
944
889
945
890
if self.enabled:
946
891
if not hasattr(self, "last_enabled"):
947
892
self.last_enabled = datetime.datetime.utcnow()
951
896
else:
952
897
self.last_enabled = None
953
898
self.expires = None
954
899
955
900
logger.debug("Creating client %r", self.name)
956
logger.debug(" Key ID: %s", self.key_id)
957
901
logger.debug(" Fingerprint: %s", self.fingerprint)
958
902
self.created = settings.get("created",
959
903
datetime.datetime.utcnow())
960
904
961
905
# attributes specific for this server instance
962
906
self.checker = None
963
907
self.checker_initiator_tag = None
972
916
for attr in self.__dict__.keys()
973
917
if not attr.startswith("_")]
974
918
self.client_structure.append("client_structure")
975
919
976
920
for name, t in inspect.getmembers(
977
921
type(self), lambda obj: isinstance(obj, property)):
978
922
if not name.startswith("_"):
979
923
self.client_structure.append(name)
980
924
981
925
# Send notice to process children that client state has changed
982
926
def send_changedstate(self):
983
927
with self.changedstate:
984
928
self.changedstate.notify_all()
985
929
986
930
def enable(self):
987
931
"""Start this client's checker and timeout hooks"""
988
932
if getattr(self, "enabled", False):
993
937
self.last_enabled = datetime.datetime.utcnow()
994
938
self.init_checker()
995
939
self.send_changedstate()
996
940
997
941
def disable(self, quiet=True):
998
942
"""Disable this client."""
999
943
if not getattr(self, "enabled", False):
1013
957
self.send_changedstate()
1014
958
# Do not run this again if called by a GLib.timeout_add
1015
959
return False
1016
960
1017
961
def __del__(self):
1018
962
self.disable()
1019
963
1020
964
def init_checker(self):
1021
965
# Schedule a new checker to be started an 'interval' from now,
1022
966
# and every interval from then on.
1032
976
int(self.timeout.total_seconds() * 1000), self.disable)
1033
977
# Also start a new checker *right now*.
1034
978
self.start_checker()
1035
979
1036
980
def checker_callback(self, source, condition, connection,
1037
981
command):
1038
982
"""The checker has completed, so take appropriate actions."""
1041
985
# Read return code from connection (see call_pipe)
1042
986
returncode = connection.recv()
1043
987
connection.close()
1044
988
1045
989
if returncode >= 0:
1046
990
self.last_checker_status = returncode
1047
991
self.last_checker_signal = None
1057
1001
logger.warning("Checker for %(name)s crashed?",
1058
1002
vars(self))
1059
1003
return False
1060
1004
1061
1005
def checked_ok(self):
1062
1006
"""Assert that the client has been seen, alive and well."""
1063
1007
self.last_checked_ok = datetime.datetime.utcnow()
1064
1008
self.last_checker_status = 0
1065
1009
self.last_checker_signal = None
1066
1010
self.bump_timeout()
1067
1011
1068
1012
def bump_timeout(self, timeout=None):
1069
1013
"""Bump up the timeout for this client."""
1070
1014
if timeout is None:
1076
1020
self.disable_initiator_tag = GLib.timeout_add(
1077
1021
int(timeout.total_seconds() * 1000), self.disable)
1078
1022
self.expires = datetime.datetime.utcnow() + timeout
1079
1023
1080
1024
def need_approval(self):
1081
1025
self.last_approval_request = datetime.datetime.utcnow()
1082
1026
1083
1027
def start_checker(self):
1084
1028
"""Start a new checker subprocess if one is not running.
1085
1029
1086
1030
If a checker already exists, leave it running and do
1087
1031
nothing."""
1088
1032
# The reason for not killing a running checker is that if we
1093
1037
# checkers alone, the checker would have to take more time
1094
1038
# than 'timeout' for the client to be disabled, which is as it
1095
1039
# should be.
1096
1040
1097
1041
if self.checker is not None and not self.checker.is_alive():
1098
1042
logger.warning("Checker was not alive; joining")
1099
1043
self.checker.join()
1103
1047
# Escape attributes for the shell
1104
1048
escaped_attrs = {
1105
1049
attr: re.escape(str(getattr(self, attr)))
1106
for attr in self.runtime_expansions}
1050
for attr in self.runtime_expansions }
1107
1051
try:
1108
1052
command = self.checker_command % escaped_attrs
1109
1053
except TypeError as error:
1121
1065
# The exception is when not debugging but nevertheless
1122
1066
# running in the foreground; use the previously
1123
1067
# created wnull.
1124
popen_args = {"close_fds": True,
1125
"shell": True,
1126
"cwd": "/"}
1068
popen_args = { "close_fds": True,
1069
"shell": True,
1070
"cwd": "/" }
1127
1071
if (not self.server_settings["debug"]
1128
1072
and self.server_settings["foreground"]):
1129
1073
popen_args.update({"stdout": wnull,
1130
"stderr": wnull})
1131
pipe = multiprocessing.Pipe(duplex=False)
1074
"stderr": wnull })
1075
pipe = multiprocessing.Pipe(duplex = False)
1132
1076
self.checker = multiprocessing.Process(
1133
target=call_pipe,
1134
args=(pipe[1], subprocess.call, command),
1135
kwargs=popen_args)
1077
target = call_pipe,
1078
args = (pipe[1], subprocess.call, command),
1079
kwargs = popen_args)
1136
1080
self.checker.start()
1137
1081
self.checker_callback_tag = GLib.io_add_watch(
1138
1082
pipe[0].fileno(), GLib.IO_IN,
1139
1083
self.checker_callback, pipe[0], command)
1140
1084
# Re-run this periodically if run by GLib.timeout_add
1141
1085
return True
1142
1086
1143
1087
def stop_checker(self):
1144
1088
"""Force the checker process, if any, to stop."""
1145
1089
if self.checker_callback_tag:
1158
1102
byte_arrays=False):
1159
1103
"""Decorators for marking methods of a DBusObjectWithProperties to
1160
1104
become properties on the D-Bus.
1161
1105
1162
1106
The decorated method will be called with no arguments by "Get"
1163
1107
and with one argument by "Set".
1164
1108
1165
1109
The parameters, where they are supported, are the same as
1166
1110
dbus.service.method, except there is only "signature", since the
1167
1111
type from Get() and the type sent to Set() is the same.
1171
1115
if byte_arrays and signature != "ay":
1172
1116
raise ValueError("Byte arrays not supported for non-'ay'"
1173
1117
" signature {!r}".format(signature))
1174
1118
1175
1119
def decorator(func):
1176
1120
func._dbus_is_property = True
1177
1121
func._dbus_interface = dbus_interface
1180
1124
func._dbus_name = func.__name__
1181
1125
if func._dbus_name.endswith("_dbus_property"):
1182
1126
func._dbus_name = func._dbus_name[:-14]
1183
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1127
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1184
1128
return func
1185
1129
1186
1130
return decorator
1187
1131
1188
1132
1189
1133
def dbus_interface_annotations(dbus_interface):
1190
1134
"""Decorator for marking functions returning interface annotations
1191
1135
1192
1136
Usage:
1193
1137
1194
1138
@dbus_interface_annotations("org.example.Interface")
1195
1139
def _foo(self): # Function name does not matter
1196
1140
return {"org.freedesktop.DBus.Deprecated": "true",
1197
1141
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1198
1142
"false"}
1199
1143
"""
1200
1144
1201
1145
def decorator(func):
1202
1146
func._dbus_is_interface = True
1203
1147
func._dbus_interface = dbus_interface
1204
1148
func._dbus_name = dbus_interface
1205
1149
return func
1206
1150
1207
1151
return decorator
1208
1152
1209
1153
1210
1154
def dbus_annotations(annotations):
1211
1155
"""Decorator to annotate D-Bus methods, signals or properties
1212
1156
Usage:
1213
1157
1214
1158
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1215
1159
"org.freedesktop.DBus.Property."
1216
1160
"EmitsChangedSignal": "false"})
1218
1162
access="r")
1219
1163
def Property_dbus_property(self):
1220
1164
return dbus.Boolean(False)
1221
1165
1222
1166
See also the DBusObjectWithAnnotations class.
1223
1167
"""
1224
1168
1225
1169
def decorator(func):
1226
1170
func._dbus_annotations = annotations
1227
1171
return func
1228
1172
1229
1173
return decorator
1230
1174
1231
1175
1249
1193
1250
1194
class DBusObjectWithAnnotations(dbus.service.Object):
1251
1195
"""A D-Bus object with annotations.
1252
1196
1253
1197
Classes inheriting from this can use the dbus_annotations
1254
1198
decorator to add annotations to methods or signals.
1255
1199
"""
1256
1200
1257
1201
@staticmethod
1258
1202
def _is_dbus_thing(thing):
1259
1203
"""Returns a function testing if an attribute is a D-Bus thing
1260
1204
1261
1205
If called like _is_dbus_thing("method") it returns a function
1262
1206
suitable for use as predicate to inspect.getmembers().
1263
1207
"""
1264
1208
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1265
1209
False)
1266
1210
1267
1211
def _get_all_dbus_things(self, thing):
1268
1212
"""Returns a generator of (name, attribute) pairs
1269
1213
"""
1272
1216
for cls in self.__class__.__mro__
1273
1217
for name, athing in
1274
1218
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1275
1219
1276
1220
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1277
out_signature="s",
1278
path_keyword='object_path',
1279
connection_keyword='connection')
1221
out_signature = "s",
1222
path_keyword = 'object_path',
1223
connection_keyword = 'connection')
1280
1224
def Introspect(self, object_path, connection):
1281
1225
"""Overloading of standard D-Bus method.
1282
1226
1283
1227
Inserts annotation tags on methods and signals.
1284
1228
"""
1285
1229
xmlstring = dbus.service.Object.Introspect(self, object_path,
1286
1230
connection)
1287
1231
try:
1288
1232
document = xml.dom.minidom.parseString(xmlstring)
1289
1233
1290
1234
for if_tag in document.getElementsByTagName("interface"):
1291
1235
# Add annotation tags
1292
1236
for typ in ("method", "signal"):
1319
1263
if_tag.appendChild(ann_tag)
1320
1264
# Fix argument name for the Introspect method itself
1321
1265
if (if_tag.getAttribute("name")
1322
== dbus.INTROSPECTABLE_IFACE):
1266
== dbus.INTROSPECTABLE_IFACE):
1323
1267
for cn in if_tag.getElementsByTagName("method"):
1324
1268
if cn.getAttribute("name") == "Introspect":
1325
1269
for arg in cn.getElementsByTagName("arg"):
1338
1282
1339
1283
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1340
1284
"""A D-Bus object with properties.
1341
1285
1342
1286
Classes inheriting from this can use the dbus_service_property
1343
1287
decorator to expose methods as D-Bus properties. It exposes the
1344
1288
standard Get(), Set(), and GetAll() methods on the D-Bus.
1345
1289
"""
1346
1290
1347
1291
def _get_dbus_property(self, interface_name, property_name):
1348
1292
"""Returns a bound method if one exists which is a D-Bus
1349
1293
property with the specified name and interface.
1354
1298
if (value._dbus_name == property_name
1355
1299
and value._dbus_interface == interface_name):
1356
1300
return value.__get__(self)
1357
1301
1358
1302
# No such property
1359
1303
raise DBusPropertyNotFound("{}:{}.{}".format(
1360
1304
self.dbus_object_path, interface_name, property_name))
1361
1305
1362
1306
@classmethod
1363
1307
def _get_all_interface_names(cls):
1364
1308
"""Get a sequence of all interfaces supported by an object"""
1367
1311
for x in (inspect.getmro(cls))
1368
1312
for attr in dir(x))
1369
1313
if name is not None)
1370
1314
1371
1315
@dbus.service.method(dbus.PROPERTIES_IFACE,
1372
1316
in_signature="ss",
1373
1317
out_signature="v")
1381
1325
if not hasattr(value, "variant_level"):
1382
1326
return value
1383
1327
return type(value)(value, variant_level=value.variant_level+1)
1384
1328
1385
1329
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1386
1330
def Set(self, interface_name, property_name, value):
1387
1331
"""Standard D-Bus property Set() method, see D-Bus standard.
1399
1343
value = dbus.ByteArray(b''.join(chr(byte)
1400
1344
for byte in value))
1401
1345
prop(value)
1402
1346
1403
1347
@dbus.service.method(dbus.PROPERTIES_IFACE,
1404
1348
in_signature="s",
1405
1349
out_signature="a{sv}")
1406
1350
def GetAll(self, interface_name):
1407
1351
"""Standard D-Bus property GetAll() method, see D-Bus
1408
1352
standard.
1409
1353
1410
1354
Note: Will not include properties with access="write".
1411
1355
"""
1412
1356
properties = {}
1423
1367
properties[name] = value
1424
1368
continue
1425
1369
properties[name] = type(value)(
1426
value, variant_level=value.variant_level + 1)
1370
value, variant_level = value.variant_level + 1)
1427
1371
return dbus.Dictionary(properties, signature="sv")
1428
1372
1429
1373
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1430
1374
def PropertiesChanged(self, interface_name, changed_properties,
1431
1375
invalidated_properties):
1433
1377
standard.
1434
1378
"""
1435
1379
pass
1436
1380
1437
1381
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1438
1382
out_signature="s",
1439
1383
path_keyword='object_path',
1440
1384
connection_keyword='connection')
1441
1385
def Introspect(self, object_path, connection):
1442
1386
"""Overloading of standard D-Bus method.
1443
1387
1444
1388
Inserts property tags and interface annotation tags.
1445
1389
"""
1446
1390
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1448
1392
connection)
1449
1393
try:
1450
1394
document = xml.dom.minidom.parseString(xmlstring)
1451
1395
1452
1396
def make_tag(document, name, prop):
1453
1397
e = document.createElement("property")
1454
1398
e.setAttribute("name", name)
1455
1399
e.setAttribute("type", prop._dbus_signature)
1456
1400
e.setAttribute("access", prop._dbus_access)
1457
1401
return e
1458
1402
1459
1403
for if_tag in document.getElementsByTagName("interface"):
1460
1404
# Add property tags
1461
1405
for tag in (make_tag(document, name, prop)
1503
1447
exc_info=error)
1504
1448
return xmlstring
1505
1449
1506
1507
1450
try:
1508
1451
dbus.OBJECT_MANAGER_IFACE
1509
1452
except AttributeError:
1510
1453
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1511
1454
1512
1513
1455
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1514
1456
"""A D-Bus object with an ObjectManager.
1515
1457
1516
1458
Classes inheriting from this exposes the standard
1517
1459
GetManagedObjects call and the InterfacesAdded and
1518
1460
InterfacesRemoved signals on the standard
1519
1461
"org.freedesktop.DBus.ObjectManager" interface.
1520
1462
1521
1463
Note: No signals are sent automatically; they must be sent
1522
1464
manually.
1523
1465
"""
1524
1466
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1525
out_signature="a{oa{sa{sv}}}")
1467
out_signature = "a{oa{sa{sv}}}")
1526
1468
def GetManagedObjects(self):
1527
1469
"""This function must be overridden"""
1528
1470
raise NotImplementedError()
1529
1471
1530
1472
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1531
signature="oa{sa{sv}}")
1473
signature = "oa{sa{sv}}")
1532
1474
def InterfacesAdded(self, object_path, interfaces_and_properties):
1533
1475
pass
1534
1535
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1476
1477
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1536
1478
def InterfacesRemoved(self, object_path, interfaces):
1537
1479
pass
1538
1480
1539
1481
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1540
out_signature="s",
1541
path_keyword='object_path',
1542
connection_keyword='connection')
1482
out_signature = "s",
1483
path_keyword = 'object_path',
1484
connection_keyword = 'connection')
1543
1485
def Introspect(self, object_path, connection):
1544
1486
"""Overloading of standard D-Bus method.
1545
1487
1546
1488
Override return argument name of GetManagedObjects to be
1547
1489
"objpath_interfaces_and_properties"
1548
1490
"""
1551
1493
connection)
1552
1494
try:
1553
1495
document = xml.dom.minidom.parseString(xmlstring)
1554
1496
1555
1497
for if_tag in document.getElementsByTagName("interface"):
1556
1498
# Fix argument name for the GetManagedObjects method
1557
1499
if (if_tag.getAttribute("name")
1558
== dbus.OBJECT_MANAGER_IFACE):
1500
== dbus.OBJECT_MANAGER_IFACE):
1559
1501
for cn in if_tag.getElementsByTagName("method"):
1560
1502
if (cn.getAttribute("name")
1561
1503
== "GetManagedObjects"):
1571
1513
except (AttributeError, xml.dom.DOMException,
1572
1514
xml.parsers.expat.ExpatError) as error:
1573
1515
logger.error("Failed to override Introspection method",
1574
exc_info=error)
1516
exc_info = error)
1575
1517
return xmlstring
1576
1518
1577
1578
1519
def datetime_to_dbus(dt, variant_level=0):
1579
1520
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1580
1521
if dt is None:
1581
return dbus.String("", variant_level=variant_level)
1522
return dbus.String("", variant_level = variant_level)
1582
1523
return dbus.String(dt.isoformat(), variant_level=variant_level)
1583
1524
1584
1525
1587
1528
dbus.service.Object, it will add alternate D-Bus attributes with
1588
1529
interface names according to the "alt_interface_names" mapping.
1589
1530
Usage:
1590
1531
1591
1532
@alternate_dbus_interfaces({"org.example.Interface":
1592
1533
"net.example.AlternateInterface"})
1593
1534
class SampleDBusObject(dbus.service.Object):
1594
1535
@dbus.service.method("org.example.Interface")
1595
1536
def SampleDBusMethod():
1596
1537
pass
1597
1538
1598
1539
The above "SampleDBusMethod" on "SampleDBusObject" will be
1599
1540
reachable via two interfaces: "org.example.Interface" and
1600
1541
"net.example.AlternateInterface", the latter of which will have
1601
1542
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1602
1543
"true", unless "deprecate" is passed with a False value.
1603
1544
1604
1545
This works for methods and signals, and also for D-Bus properties
1605
1546
(from DBusObjectWithProperties) and interfaces (from the
1606
1547
dbus_interface_annotations decorator).
1607
1548
"""
1608
1549
1609
1550
def wrapper(cls):
1610
1551
for orig_interface_name, alt_interface_name in (
1611
1552
alt_interface_names.items()):
1651
1592
attribute._dbus_annotations)
1652
1593
except AttributeError:
1653
1594
pass
1654
1655
1595
# Define a creator of a function to call both the
1656
1596
# original and alternate functions, so both the
1657
1597
# original and alternate signals gets sent when
1660
1600
"""This function is a scope container to pass
1661
1601
func1 and func2 to the "call_both" function
1662
1602
outside of its arguments"""
1663
1603
1664
1604
@functools.wraps(func2)
1665
1605
def call_both(*args, **kwargs):
1666
1606
"""This function will emit two D-Bus
1667
1607
signals by calling func1 and func2"""
1668
1608
func1(*args, **kwargs)
1669
1609
func2(*args, **kwargs)
1670
# Make wrapper function look like a D-Bus
1671
# signal
1610
# Make wrapper function look like a D-Bus signal
1672
1611
for name, attr in inspect.getmembers(func2):
1673
1612
if name.startswith("_dbus_"):
1674
1613
setattr(call_both, name, attr)
1675
1614
1676
1615
return call_both
1677
1616
# Create the "call_both" function and add it to
1678
1617
# the class
1724
1663
(copy_function(attribute)))
1725
1664
if deprecate:
1726
1665
# Deprecate all alternate interfaces
1727
iname = "_AlternateDBusNames_interface_annotation{}"
1666
iname="_AlternateDBusNames_interface_annotation{}"
1728
1667
for interface_name in interface_names:
1729
1668
1730
1669
@dbus_interface_annotations(interface_name)
1731
1670
def func(self):
1732
return {"org.freedesktop.DBus.Deprecated":
1733
"true"}
1671
return { "org.freedesktop.DBus.Deprecated":
1672
"true" }
1734
1673
# Find an unused name
1735
1674
for aname in (iname.format(i)
1736
1675
for i in itertools.count()):
1747
1686
cls = type("{}Alternate".format(cls.__name__),
1748
1687
(cls, ), attr)
1749
1688
return cls
1750
1689
1751
1690
return wrapper
1752
1691
1753
1692
1755
1694
"se.bsnet.fukt.Mandos"})
1756
1695
class ClientDBus(Client, DBusObjectWithProperties):
1757
1696
"""A Client class using D-Bus
1758
1697
1759
1698
Attributes:
1760
1699
dbus_object_path: dbus.ObjectPath
1761
1700
bus: dbus.SystemBus()
1762
1701
"""
1763
1702
1764
1703
runtime_expansions = (Client.runtime_expansions
1765
1704
+ ("dbus_object_path", ))
1766
1705
1767
1706
_interface = "se.recompile.Mandos.Client"
1768
1707
1769
1708
# dbus.service.Object doesn't use super(), so we can't either.
1770
1771
def __init__(self, bus=None, *args, **kwargs):
1709
1710
def __init__(self, bus = None, *args, **kwargs):
1772
1711
self.bus = bus
1773
1712
Client.__init__(self, *args, **kwargs)
1774
1713
# Only now, when this client is initialized, can it show up on
1780
1719
"/clients/" + client_object_name)
1781
1720
DBusObjectWithProperties.__init__(self, self.bus,
1782
1721
self.dbus_object_path)
1783
1722
1784
1723
def notifychangeproperty(transform_func, dbus_name,
1785
1724
type_func=lambda x: x,
1786
1725
variant_level=1,
1788
1727
_interface=_interface):
1789
1728
""" Modify a variable so that it's a property which announces
1790
1729
its changes to DBus.
1791
1730
1792
1731
transform_fun: Function that takes a value and a variant_level
1793
1732
and transforms it to a D-Bus type.
1794
1733
dbus_name: D-Bus name of the variable
1797
1736
variant_level: D-Bus variant level. Default: 1
1798
1737
"""
1799
1738
attrname = "_{}".format(dbus_name)
1800
1739
1801
1740
def setter(self, value):
1802
1741
if hasattr(self, "dbus_object_path"):
1803
1742
if (not hasattr(self, attrname) or
1810
1749
else:
1811
1750
dbus_value = transform_func(
1812
1751
type_func(value),
1813
variant_level=variant_level)
1752
variant_level = variant_level)
1814
1753
self.PropertyChanged(dbus.String(dbus_name),
1815
1754
dbus_value)
1816
1755
self.PropertiesChanged(
1817
1756
_interface,
1818
dbus.Dictionary({dbus.String(dbus_name):
1819
dbus_value}),
1757
dbus.Dictionary({ dbus.String(dbus_name):
1758
dbus_value }),
1820
1759
dbus.Array())
1821
1760
setattr(self, attrname, value)
1822
1761
1823
1762
return property(lambda self: getattr(self, attrname), setter)
1824
1763
1825
1764
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1826
1765
approvals_pending = notifychangeproperty(dbus.Boolean,
1827
1766
"ApprovalPending",
1828
type_func=bool)
1767
type_func = bool)
1829
1768
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1830
1769
last_enabled = notifychangeproperty(datetime_to_dbus,
1831
1770
"LastEnabled")
1832
1771
checker = notifychangeproperty(
1833
1772
dbus.Boolean, "CheckerRunning",
1834
type_func=lambda checker: checker is not None)
1773
type_func = lambda checker: checker is not None)
1835
1774
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1836
1775
"LastCheckedOK")
1837
1776
last_checker_status = notifychangeproperty(dbus.Int16,
1842
1781
"ApprovedByDefault")
1843
1782
approval_delay = notifychangeproperty(
1844
1783
dbus.UInt64, "ApprovalDelay",
1845
type_func=lambda td: td.total_seconds() * 1000)
1784
type_func = lambda td: td.total_seconds() * 1000)
1846
1785
approval_duration = notifychangeproperty(
1847
1786
dbus.UInt64, "ApprovalDuration",
1848
type_func=lambda td: td.total_seconds() * 1000)
1787
type_func = lambda td: td.total_seconds() * 1000)
1849
1788
host = notifychangeproperty(dbus.String, "Host")
1850
1789
timeout = notifychangeproperty(
1851
1790
dbus.UInt64, "Timeout",
1852
type_func=lambda td: td.total_seconds() * 1000)
1791
type_func = lambda td: td.total_seconds() * 1000)
1853
1792
extended_timeout = notifychangeproperty(
1854
1793
dbus.UInt64, "ExtendedTimeout",
1855
type_func=lambda td: td.total_seconds() * 1000)
1794
type_func = lambda td: td.total_seconds() * 1000)
1856
1795
interval = notifychangeproperty(
1857
1796
dbus.UInt64, "Interval",
1858
type_func=lambda td: td.total_seconds() * 1000)
1797
type_func = lambda td: td.total_seconds() * 1000)
1859
1798
checker_command = notifychangeproperty(dbus.String, "Checker")
1860
1799
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1861
1800
invalidate_only=True)
1862
1801
1863
1802
del notifychangeproperty
1864
1803
1865
1804
def __del__(self, *args, **kwargs):
1866
1805
try:
1867
1806
self.remove_from_connection()
1870
1809
if hasattr(DBusObjectWithProperties, "__del__"):
1871
1810
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1872
1811
Client.__del__(self, *args, **kwargs)
1873
1812
1874
1813
def checker_callback(self, source, condition,
1875
1814
connection, command, *args, **kwargs):
1876
1815
ret = Client.checker_callback(self, source, condition,
1892
1831
| self.last_checker_signal),
1893
1832
dbus.String(command))
1894
1833
return ret
1895
1834
1896
1835
def start_checker(self, *args, **kwargs):
1897
1836
old_checker_pid = getattr(self.checker, "pid", None)
1898
1837
r = Client.start_checker(self, *args, **kwargs)
1902
1841
# Emit D-Bus signal
1903
1842
self.CheckerStarted(self.current_checker_command)
1904
1843
return r
1905
1844
1906
1845
def _reset_approved(self):
1907
1846
self.approved = None
1908
1847
return False
1909
1848
1910
1849
def approve(self, value=True):
1911
1850
self.approved = value
1912
1851
GLib.timeout_add(int(self.approval_duration.total_seconds()
1913
1852
* 1000), self._reset_approved)
1914
1853
self.send_changedstate()
1915
1916
# D-Bus methods, signals & properties
1917
1918
# Interfaces
1919
1920
# Signals
1921
1854
1855
## D-Bus methods, signals & properties
1856
1857
## Interfaces
1858
1859
## Signals
1860
1922
1861
# CheckerCompleted - signal
1923
1862
@dbus.service.signal(_interface, signature="nxs")
1924
1863
def CheckerCompleted(self, exitcode, waitstatus, command):
1925
1864
"D-Bus signal"
1926
1865
pass
1927
1866
1928
1867
# CheckerStarted - signal
1929
1868
@dbus.service.signal(_interface, signature="s")
1930
1869
def CheckerStarted(self, command):
1931
1870
"D-Bus signal"
1932
1871
pass
1933
1872
1934
1873
# PropertyChanged - signal
1935
1874
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1936
1875
@dbus.service.signal(_interface, signature="sv")
1937
1876
def PropertyChanged(self, property, value):
1938
1877
"D-Bus signal"
1939
1878
pass
1940
1879
1941
1880
# GotSecret - signal
1942
1881
@dbus.service.signal(_interface)
1943
1882
def GotSecret(self):
1946
1885
server to mandos-client
1947
1886
"""
1948
1887
pass
1949
1888
1950
1889
# Rejected - signal
1951
1890
@dbus.service.signal(_interface, signature="s")
1952
1891
def Rejected(self, reason):
1953
1892
"D-Bus signal"
1954
1893
pass
1955
1894
1956
1895
# NeedApproval - signal
1957
1896
@dbus.service.signal(_interface, signature="tb")
1958
1897
def NeedApproval(self, timeout, default):
1959
1898
"D-Bus signal"
1960
1899
return self.need_approval()
1961
1962
# Methods
1963
1900
1901
## Methods
1902
1964
1903
# Approve - method
1965
1904
@dbus.service.method(_interface, in_signature="b")
1966
1905
def Approve(self, value):
1967
1906
self.approve(value)
1968
1907
1969
1908
# CheckedOK - method
1970
1909
@dbus.service.method(_interface)
1971
1910
def CheckedOK(self):
1972
1911
self.checked_ok()
1973
1912
1974
1913
# Enable - method
1975
1914
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1976
1915
@dbus.service.method(_interface)
1977
1916
def Enable(self):
1978
1917
"D-Bus method"
1979
1918
self.enable()
1980
1919
1981
1920
# StartChecker - method
1982
1921
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1983
1922
@dbus.service.method(_interface)
1984
1923
def StartChecker(self):
1985
1924
"D-Bus method"
1986
1925
self.start_checker()
1987
1926
1988
1927
# Disable - method
1989
1928
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1990
1929
@dbus.service.method(_interface)
1991
1930
def Disable(self):
1992
1931
"D-Bus method"
1993
1932
self.disable()
1994
1933
1995
1934
# StopChecker - method
1996
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1997
1936
@dbus.service.method(_interface)
1998
1937
def StopChecker(self):
1999
1938
self.stop_checker()
2000
2001
# Properties
2002
1939
1940
## Properties
1941
2003
1942
# ApprovalPending - property
2004
1943
@dbus_service_property(_interface, signature="b", access="read")
2005
1944
def ApprovalPending_dbus_property(self):
2006
1945
return dbus.Boolean(bool(self.approvals_pending))
2007
1946
2008
1947
# ApprovedByDefault - property
2009
1948
@dbus_service_property(_interface,
2010
1949
signature="b",
2013
1952
if value is None: # get
2014
1953
return dbus.Boolean(self.approved_by_default)
2015
1954
self.approved_by_default = bool(value)
2016
1955
2017
1956
# ApprovalDelay - property
2018
1957
@dbus_service_property(_interface,
2019
1958
signature="t",
2023
1962
return dbus.UInt64(self.approval_delay.total_seconds()
2024
1963
* 1000)
2025
1964
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2026
1965
2027
1966
# ApprovalDuration - property
2028
1967
@dbus_service_property(_interface,
2029
1968
signature="t",
2033
1972
return dbus.UInt64(self.approval_duration.total_seconds()
2034
1973
* 1000)
2035
1974
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2036
1975
2037
1976
# Name - property
2038
1977
@dbus_annotations(
2039
1978
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2040
1979
@dbus_service_property(_interface, signature="s", access="read")
2041
1980
def Name_dbus_property(self):
2042
1981
return dbus.String(self.name)
2043
2044
# KeyID - property
2045
@dbus_annotations(
2046
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2047
@dbus_service_property(_interface, signature="s", access="read")
2048
def KeyID_dbus_property(self):
2049
return dbus.String(self.key_id)
2050
1982
2051
1983
# Fingerprint - property
2052
1984
@dbus_annotations(
2053
1985
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2054
1986
@dbus_service_property(_interface, signature="s", access="read")
2055
1987
def Fingerprint_dbus_property(self):
2056
1988
return dbus.String(self.fingerprint)
2057
1989
2058
1990
# Host - property
2059
1991
@dbus_service_property(_interface,
2060
1992
signature="s",
2063
1995
if value is None: # get
2064
1996
return dbus.String(self.host)
2065
1997
self.host = str(value)
2066
1998
2067
1999
# Created - property
2068
2000
@dbus_annotations(
2069
2001
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2070
2002
@dbus_service_property(_interface, signature="s", access="read")
2071
2003
def Created_dbus_property(self):
2072
2004
return datetime_to_dbus(self.created)
2073
2005
2074
2006
# LastEnabled - property
2075
2007
@dbus_service_property(_interface, signature="s", access="read")
2076
2008
def LastEnabled_dbus_property(self):
2077
2009
return datetime_to_dbus(self.last_enabled)
2078
2010
2079
2011
# Enabled - property
2080
2012
@dbus_service_property(_interface,
2081
2013
signature="b",
2087
2019
self.enable()
2088
2020
else:
2089
2021
self.disable()
2090
2022
2091
2023
# LastCheckedOK - property
2092
2024
@dbus_service_property(_interface,
2093
2025
signature="s",
2097
2029
self.checked_ok()
2098
2030
return
2099
2031
return datetime_to_dbus(self.last_checked_ok)
2100
2032
2101
2033
# LastCheckerStatus - property
2102
2034
@dbus_service_property(_interface, signature="n", access="read")
2103
2035
def LastCheckerStatus_dbus_property(self):
2104
2036
return dbus.Int16(self.last_checker_status)
2105
2037
2106
2038
# Expires - property
2107
2039
@dbus_service_property(_interface, signature="s", access="read")
2108
2040
def Expires_dbus_property(self):
2109
2041
return datetime_to_dbus(self.expires)
2110
2042
2111
2043
# LastApprovalRequest - property
2112
2044
@dbus_service_property(_interface, signature="s", access="read")
2113
2045
def LastApprovalRequest_dbus_property(self):
2114
2046
return datetime_to_dbus(self.last_approval_request)
2115
2047
2116
2048
# Timeout - property
2117
2049
@dbus_service_property(_interface,
2118
2050
signature="t",
2137
2069
self.disable_initiator_tag = GLib.timeout_add(
2138
2070
int((self.expires - now).total_seconds() * 1000),
2139
2071
self.disable)
2140
2072
2141
2073
# ExtendedTimeout - property
2142
2074
@dbus_service_property(_interface,
2143
2075
signature="t",
2147
2079
return dbus.UInt64(self.extended_timeout.total_seconds()
2148
2080
* 1000)
2149
2081
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2150
2082
2151
2083
# Interval - property
2152
2084
@dbus_service_property(_interface,
2153
2085
signature="t",
2163
2095
GLib.source_remove(self.checker_initiator_tag)
2164
2096
self.checker_initiator_tag = GLib.timeout_add(
2165
2097
value, self.start_checker)
2166
self.start_checker() # Start one now, too
2167
2098
self.start_checker() # Start one now, too
2099
2168
2100
# Checker - property
2169
2101
@dbus_service_property(_interface,
2170
2102
signature="s",
2173
2105
if value is None: # get
2174
2106
return dbus.String(self.checker_command)
2175
2107
self.checker_command = str(value)
2176
2108
2177
2109
# CheckerRunning - property
2178
2110
@dbus_service_property(_interface,
2179
2111
signature="b",
2185
2117
self.start_checker()
2186
2118
else:
2187
2119
self.stop_checker()
2188
2120
2189
2121
# ObjectPath - property
2190
2122
@dbus_annotations(
2191
2123
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2192
2124
"org.freedesktop.DBus.Deprecated": "true"})
2193
2125
@dbus_service_property(_interface, signature="o", access="read")
2194
2126
def ObjectPath_dbus_property(self):
2195
return self.dbus_object_path # is already a dbus.ObjectPath
2196
2127
return self.dbus_object_path # is already a dbus.ObjectPath
2128
2197
2129
# Secret = property
2198
2130
@dbus_annotations(
2199
2131
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2204
2136
byte_arrays=True)
2205
2137
def Secret_dbus_property(self, value):
2206
2138
self.secret = bytes(value)
2207
2139
2208
2140
del _interface
2209
2141
2210
2142
2211
2143
class ProxyClient(object):
2212
def __init__(self, child_pipe, key_id, fpr, address):
2144
def __init__(self, child_pipe, fpr, address):
2213
2145
self._pipe = child_pipe
2214
self._pipe.send(('init', key_id, fpr, address))
2146
self._pipe.send(('init', fpr, address))
2215
2147
if not self._pipe.recv():
2216
raise KeyError(key_id or fpr)
2217
2148
raise KeyError(fpr)
2149
2218
2150
def __getattribute__(self, name):
2219
2151
if name == '_pipe':
2220
2152
return super(ProxyClient, self).__getattribute__(name)
2223
2155
if data[0] == 'data':
2224
2156
return data[1]
2225
2157
if data[0] == 'function':
2226
2158
2227
2159
def func(*args, **kwargs):
2228
2160
self._pipe.send(('funcall', name, args, kwargs))
2229
2161
return self._pipe.recv()[1]
2230
2162
2231
2163
return func
2232
2164
2233
2165
def __setattr__(self, name, value):
2234
2166
if name == '_pipe':
2235
2167
return super(ProxyClient, self).__setattr__(name, value)
2238
2170
2239
2171
class ClientHandler(socketserver.BaseRequestHandler, object):
2240
2172
"""A class to handle client connections.
2241
2173
2242
2174
Instantiated once for each connection to handle it.
2243
2175
Note: This will run in its own forked process."""
2244
2176
2245
2177
def handle(self):
2246
2178
with contextlib.closing(self.server.child_pipe) as child_pipe:
2247
2179
logger.info("TCP connection from: %s",
2248
2180
str(self.client_address))
2249
2181
logger.debug("Pipe FD: %d",
2250
2182
self.server.child_pipe.fileno())
2251
2183
2252
2184
session = gnutls.ClientSession(self.request)
2253
2254
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2255
# "+AES-256-CBC", "+SHA1",
2256
# "+COMP-NULL", "+CTYPE-OPENPGP",
2257
# "+DHE-DSS"))
2185
2186
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2187
# "+AES-256-CBC", "+SHA1",
2188
# "+COMP-NULL", "+CTYPE-OPENPGP",
2189
# "+DHE-DSS"))
2258
2190
# Use a fallback default, since this MUST be set.
2259
2191
priority = self.server.gnutls_priority
2260
2192
if priority is None:
2262
2194
gnutls.priority_set_direct(session._c_object,
2263
2195
priority.encode("utf-8"),
2264
2196
None)
2265
2197
2266
2198
# Start communication using the Mandos protocol
2267
2199
# Get protocol number
2268
2200
line = self.request.makefile().readline()
2273
2205
except (ValueError, IndexError, RuntimeError) as error:
2274
2206
logger.error("Unknown protocol version: %s", error)
2275
2207
return
2276
2208
2277
2209
# Start GnuTLS connection
2278
2210
try:
2279
2211
session.handshake()
2283
2215
# established. Just abandon the request.
2284
2216
return
2285
2217
logger.debug("Handshake succeeded")
2286
2218
2287
2219
approval_required = False
2288
2220
try:
2289
if gnutls.has_rawpk:
2290
fpr = ""
2291
try:
2292
key_id = self.key_id(
2293
self.peer_certificate(session))
2294
except (TypeError, gnutls.Error) as error:
2295
logger.warning("Bad certificate: %s", error)
2296
return
2297
logger.debug("Key ID: %s", key_id)
2298
2299
else:
2300
key_id = ""
2301
try:
2302
fpr = self.fingerprint(
2303
self.peer_certificate(session))
2304
except (TypeError, gnutls.Error) as error:
2305
logger.warning("Bad certificate: %s", error)
2306
return
2307
logger.debug("Fingerprint: %s", fpr)
2308
2309
try:
2310
client = ProxyClient(child_pipe, key_id, fpr,
2221
try:
2222
fpr = self.fingerprint(
2223
self.peer_certificate(session))
2224
except (TypeError, gnutls.Error) as error:
2225
logger.warning("Bad certificate: %s", error)
2226
return
2227
logger.debug("Fingerprint: %s", fpr)
2228
2229
try:
2230
client = ProxyClient(child_pipe, fpr,
2311
2231
self.client_address)
2312
2232
except KeyError:
2313
2233
return
2314
2234
2315
2235
if client.approval_delay:
2316
2236
delay = client.approval_delay
2317
2237
client.approvals_pending += 1
2318
2238
approval_required = True
2319
2239
2320
2240
while True:
2321
2241
if not client.enabled:
2322
2242
logger.info("Client %s is disabled",
2325
2245
# Emit D-Bus signal
2326
2246
client.Rejected("Disabled")
2327
2247
return
2328
2248
2329
2249
if client.approved or not client.approval_delay:
2330
# We are approved or approval is disabled
2250
#We are approved or approval is disabled
2331
2251
break
2332
2252
elif client.approved is None:
2333
2253
logger.info("Client %s needs approval",
2344
2264
# Emit D-Bus signal
2345
2265
client.Rejected("Denied")
2346
2266
return
2347
2348
# wait until timeout or approved
2267
2268
#wait until timeout or approved
2349
2269
time = datetime.datetime.now()
2350
2270
client.changedstate.acquire()
2351
2271
client.changedstate.wait(delay.total_seconds())
2364
2284
break
2365
2285
else:
2366
2286
delay -= time2 - time
2367
2287
2368
2288
try:
2369
2289
session.send(client.secret)
2370
2290
except gnutls.Error as error:
2371
2291
logger.warning("gnutls send failed",
2372
exc_info=error)
2292
exc_info = error)
2373
2293
return
2374
2294
2375
2295
logger.info("Sending secret to %s", client.name)
2376
2296
# bump the timeout using extended_timeout
2377
2297
client.bump_timeout(client.extended_timeout)
2378
2298
if self.server.use_dbus:
2379
2299
# Emit D-Bus signal
2380
2300
client.GotSecret()
2381
2301
2382
2302
finally:
2383
2303
if approval_required:
2384
2304
client.approvals_pending -= 1
2387
2307
except gnutls.Error as error:
2388
2308
logger.warning("GnuTLS bye failed",
2389
2309
exc_info=error)
2390
2310
2391
2311
@staticmethod
2392
2312
def peer_certificate(session):
2393
"Return the peer's certificate as a bytestring"
2394
try:
2395
cert_type = gnutls.certificate_type_get2(session._c_object,
2396
gnutls.CTYPE_PEERS)
2397
except AttributeError:
2398
cert_type = gnutls.certificate_type_get(session._c_object)
2399
if gnutls.has_rawpk:
2400
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2401
else:
2402
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2403
# If not a valid certificate type...
2404
if cert_type not in valid_cert_types:
2405
logger.info("Cert type %r not in %r", cert_type,
2406
valid_cert_types)
2313
"Return the peer's OpenPGP certificate as a bytestring"
2314
# If not an OpenPGP certificate...
2315
if (gnutls.certificate_type_get(session._c_object)
2316
!= gnutls.CRT_OPENPGP):
2407
2317
# ...return invalid data
2408
2318
return b""
2409
2319
list_size = ctypes.c_uint(1)
2415
2325
return None
2416
2326
cert = cert_list[0]
2417
2327
return ctypes.string_at(cert.data, cert.size)
2418
2419
@staticmethod
2420
def key_id(certificate):
2421
"Convert a certificate bytestring to a hexdigit key ID"
2422
# New GnuTLS "datum" with the public key
2423
datum = gnutls.datum_t(
2424
ctypes.cast(ctypes.c_char_p(certificate),
2425
ctypes.POINTER(ctypes.c_ubyte)),
2426
ctypes.c_uint(len(certificate)))
2427
# XXX all these need to be created in the gnutls "module"
2428
# New empty GnuTLS certificate
2429
pubkey = gnutls.pubkey_t()
2430
gnutls.pubkey_init(ctypes.byref(pubkey))
2431
# Import the raw public key into the certificate
2432
gnutls.pubkey_import(pubkey,
2433
ctypes.byref(datum),
2434
gnutls.X509_FMT_DER)
2435
# New buffer for the key ID
2436
buf = ctypes.create_string_buffer(32)
2437
buf_len = ctypes.c_size_t(len(buf))
2438
# Get the key ID from the raw public key into the buffer
2439
gnutls.pubkey_get_key_id(pubkey,
2440
gnutls.KEYID_USE_SHA256,
2441
ctypes.cast(ctypes.byref(buf),
2442
ctypes.POINTER(ctypes.c_ubyte)),
2443
ctypes.byref(buf_len))
2444
# Deinit the certificate
2445
gnutls.pubkey_deinit(pubkey)
2446
2447
# Convert the buffer to a Python bytestring
2448
key_id = ctypes.string_at(buf, buf_len.value)
2449
# Convert the bytestring to hexadecimal notation
2450
hex_key_id = binascii.hexlify(key_id).upper()
2451
return hex_key_id
2452
2328
2453
2329
@staticmethod
2454
2330
def fingerprint(openpgp):
2455
2331
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2470
2346
ctypes.byref(crtverify))
2471
2347
if crtverify.value != 0:
2472
2348
gnutls.openpgp_crt_deinit(crt)
2473
raise gnutls.CertificateSecurityError(code
2474
=crtverify.value)
2349
raise gnutls.CertificateSecurityError("Verify failed")
2475
2350
# New buffer for the fingerprint
2476
2351
buf = ctypes.create_string_buffer(20)
2477
2352
buf_len = ctypes.c_size_t()
2489
2364
2490
2365
class MultiprocessingMixIn(object):
2491
2366
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2492
2367
2493
2368
def sub_process_main(self, request, address):
2494
2369
try:
2495
2370
self.finish_request(request, address)
2496
2371
except Exception:
2497
2372
self.handle_error(request, address)
2498
2373
self.close_request(request)
2499
2374
2500
2375
def process_request(self, request, address):
2501
2376
"""Start a new process to process the request."""
2502
proc = multiprocessing.Process(target=self.sub_process_main,
2503
args=(request, address))
2377
proc = multiprocessing.Process(target = self.sub_process_main,
2378
args = (request, address))
2504
2379
proc.start()
2505
2380
return proc
2506
2381
2507
2382
2508
2383
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2509
2384
""" adds a pipe to the MixIn """
2510
2385
2511
2386
def process_request(self, request, client_address):
2512
2387
"""Overrides and wraps the original process_request().
2513
2388
2514
2389
This function creates a new pipe in self.pipe
2515
2390
"""
2516
2391
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2517
2392
2518
2393
proc = MultiprocessingMixIn.process_request(self, request,
2519
2394
client_address)
2520
2395
self.child_pipe.close()
2521
2396
self.add_pipe(parent_pipe, proc)
2522
2397
2523
2398
def add_pipe(self, parent_pipe, proc):
2524
2399
"""Dummy function; override as necessary"""
2525
2400
raise NotImplementedError()
2528
2403
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2529
2404
socketserver.TCPServer, object):
2530
2405
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2531
2406
2532
2407
Attributes:
2533
2408
enabled: Boolean; whether this server is activated yet
2534
2409
interface: None or a network interface name (string)
2535
2410
use_ipv6: Boolean; to use IPv6 or not
2536
2411
"""
2537
2412
2538
2413
def __init__(self, server_address, RequestHandlerClass,
2539
2414
interface=None,
2540
2415
use_ipv6=True,
2550
2425
self.socketfd = socketfd
2551
2426
# Save the original socket.socket() function
2552
2427
self.socket_socket = socket.socket
2553
2554
2428
# To implement --socket, we monkey patch socket.socket.
2555
#
2429
#
2556
2430
# (When socketserver.TCPServer is a new-style class, we
2557
2431
# could make self.socket into a property instead of monkey
2558
2432
# patching socket.socket.)
2559
#
2433
#
2560
2434
# Create a one-time-only replacement for socket.socket()
2561
2435
@functools.wraps(socket.socket)
2562
2436
def socket_wrapper(*args, **kwargs):
2574
2448
# socket_wrapper(), if socketfd was set.
2575
2449
socketserver.TCPServer.__init__(self, server_address,
2576
2450
RequestHandlerClass)
2577
2451
2578
2452
def server_bind(self):
2579
2453
"""This overrides the normal server_bind() function
2580
2454
to bind to an interface if one was specified, and also NOT to
2607
2481
if self.server_address[0] or self.server_address[1]:
2608
2482
if not self.server_address[0]:
2609
2483
if self.address_family == socket.AF_INET6:
2610
any_address = "::" # in6addr_any
2484
any_address = "::" # in6addr_any
2611
2485
else:
2612
any_address = "0.0.0.0" # INADDR_ANY
2486
any_address = "0.0.0.0" # INADDR_ANY
2613
2487
self.server_address = (any_address,
2614
2488
self.server_address[1])
2615
2489
elif not self.server_address[1]:
2625
2499
2626
2500
class MandosServer(IPv6_TCPServer):
2627
2501
"""Mandos server.
2628
2502
2629
2503
Attributes:
2630
2504
clients: set of Client objects
2631
2505
gnutls_priority GnuTLS priority string
2632
2506
use_dbus: Boolean; to emit D-Bus signals or not
2633
2507
2634
2508
Assumes a GLib.MainLoop event loop.
2635
2509
"""
2636
2510
2637
2511
def __init__(self, server_address, RequestHandlerClass,
2638
2512
interface=None,
2639
2513
use_ipv6=True,
2649
2523
self.gnutls_priority = gnutls_priority
2650
2524
IPv6_TCPServer.__init__(self, server_address,
2651
2525
RequestHandlerClass,
2652
interface=interface,
2653
use_ipv6=use_ipv6,
2654
socketfd=socketfd)
2655
2526
interface = interface,
2527
use_ipv6 = use_ipv6,
2528
socketfd = socketfd)
2529
2656
2530
def server_activate(self):
2657
2531
if self.enabled:
2658
2532
return socketserver.TCPServer.server_activate(self)
2659
2533
2660
2534
def enable(self):
2661
2535
self.enabled = True
2662
2536
2663
2537
def add_pipe(self, parent_pipe, proc):
2664
2538
# Call "handle_ipc" for both data and EOF events
2665
2539
GLib.io_add_watch(
2666
2540
parent_pipe.fileno(),
2667
2541
GLib.IO_IN | GLib.IO_HUP,
2668
2542
functools.partial(self.handle_ipc,
2669
parent_pipe=parent_pipe,
2670
proc=proc))
2671
2543
parent_pipe = parent_pipe,
2544
proc = proc))
2545
2672
2546
def handle_ipc(self, source, condition,
2673
2547
parent_pipe=None,
2674
proc=None,
2548
proc = None,
2675
2549
client_object=None):
2676
2550
# error, or the other end of multiprocessing.Pipe has closed
2677
2551
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2678
2552
# Wait for other process to exit
2679
2553
proc.join()
2680
2554
return False
2681
2555
2682
2556
# Read a request from the child
2683
2557
request = parent_pipe.recv()
2684
2558
command = request[0]
2685
2559
2686
2560
if command == 'init':
2687
key_id = request[1].decode("ascii")
2688
fpr = request[2].decode("ascii")
2689
address = request[3]
2690
2561
fpr = request[1]
2562
address = request[2]
2563
2691
2564
for c in self.clients.values():
2692
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2693
continue
2694
if key_id and c.key_id == key_id:
2695
client = c
2696
break
2697
if fpr and c.fingerprint == fpr:
2565
if c.fingerprint == fpr:
2698
2566
client = c
2699
2567
break
2700
2568
else:
2701
logger.info("Client not found for key ID: %s, address"
2702
": %s", key_id or fpr, address)
2569
logger.info("Client not found for fingerprint: %s, ad"
2570
"dress: %s", fpr, address)
2703
2571
if self.use_dbus:
2704
2572
# Emit D-Bus signal
2705
mandos_dbus_service.ClientNotFound(key_id or fpr,
2573
mandos_dbus_service.ClientNotFound(fpr,
2706
2574
address[0])
2707
2575
parent_pipe.send(False)
2708
2576
return False
2709
2577
2710
2578
GLib.io_add_watch(
2711
2579
parent_pipe.fileno(),
2712
2580
GLib.IO_IN | GLib.IO_HUP,
2713
2581
functools.partial(self.handle_ipc,
2714
parent_pipe=parent_pipe,
2715
proc=proc,
2716
client_object=client))
2582
parent_pipe = parent_pipe,
2583
proc = proc,
2584
client_object = client))
2717
2585
parent_pipe.send(True)
2718
2586
# remove the old hook in favor of the new above hook on
2719
2587
# same fileno
2722
2590
funcname = request[1]
2723
2591
args = request[2]
2724
2592
kwargs = request[3]
2725
2593
2726
2594
parent_pipe.send(('data', getattr(client_object,
2727
2595
funcname)(*args,
2728
2596
**kwargs)))
2729
2597
2730
2598
if command == 'getattr':
2731
2599
attrname = request[1]
2732
2600
if isinstance(client_object.__getattribute__(attrname),
2735
2603
else:
2736
2604
parent_pipe.send((
2737
2605
'data', client_object.__getattribute__(attrname)))
2738
2606
2739
2607
if command == 'setattr':
2740
2608
attrname = request[1]
2741
2609
value = request[2]
2742
2610
setattr(client_object, attrname, value)
2743
2611
2744
2612
return True
2745
2613
2746
2614
2747
2615
def rfc3339_duration_to_delta(duration):
2748
2616
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2749
2617
2750
2618
>>> rfc3339_duration_to_delta("P7D")
2751
2619
datetime.timedelta(7)
2752
2620
>>> rfc3339_duration_to_delta("PT60S")
2762
2630
>>> rfc3339_duration_to_delta("P1DT3M20S")
2763
2631
datetime.timedelta(1, 200)
2764
2632
"""
2765
2633
2766
2634
# Parsing an RFC 3339 duration with regular expressions is not
2767
2635
# possible - there would have to be multiple places for the same
2768
2636
# values, like seconds. The current code, while more esoteric, is
2769
2637
# cleaner without depending on a parsing library. If Python had a
2770
2638
# built-in library for parsing we would use it, but we'd like to
2771
2639
# avoid excessive use of external libraries.
2772
2640
2773
2641
# New type for defining tokens, syntax, and semantics all-in-one
2774
2642
Token = collections.namedtuple("Token", (
2775
2643
"regexp", # To match token; if "value" is not None, must have
2808
2676
frozenset((token_year, token_month,
2809
2677
token_day, token_time,
2810
2678
token_week)))
2811
# Define starting values:
2812
# Value so far
2813
value = datetime.timedelta()
2679
# Define starting values
2680
value = datetime.timedelta() # Value so far
2814
2681
found_token = None
2815
# Following valid tokens
2816
followers = frozenset((token_duration, ))
2817
# String left to parse
2818
s = duration
2682
followers = frozenset((token_duration, )) # Following valid tokens
2683
s = duration # String left to parse
2819
2684
# Loop until end token is found
2820
2685
while found_token is not token_end:
2821
2686
# Search for any currently valid tokens
2845
2710
2846
2711
def string_to_delta(interval):
2847
2712
"""Parse a string and return a datetime.timedelta
2848
2713
2849
2714
>>> string_to_delta('7d')
2850
2715
datetime.timedelta(7)
2851
2716
>>> string_to_delta('60s')
2859
2724
>>> string_to_delta('5m 30s')
2860
2725
datetime.timedelta(0, 330)
2861
2726
"""
2862
2727
2863
2728
try:
2864
2729
return rfc3339_duration_to_delta(interval)
2865
2730
except ValueError:
2866
2731
pass
2867
2732
2868
2733
timevalue = datetime.timedelta(0)
2869
2734
for s in interval.split():
2870
2735
try:
2888
2753
return timevalue
2889
2754
2890
2755
2891
def daemon(nochdir=False, noclose=False):
2756
def daemon(nochdir = False, noclose = False):
2892
2757
"""See daemon(3). Standard BSD Unix function.
2893
2758
2894
2759
This should really exist as os.daemon, but it doesn't (yet)."""
2895
2760
if os.fork():
2896
2761
sys.exit()
2914
2779
2915
2780
2916
2781
def main():
2917
2782
2918
2783
##################################################################
2919
2784
# Parsing of options, both command line and config file
2920
2785
2921
2786
parser = argparse.ArgumentParser()
2922
2787
parser.add_argument("-v", "--version", action="version",
2923
version="%(prog)s {}".format(version),
2788
version = "%(prog)s {}".format(version),
2924
2789
help="show version number and exit")
2925
2790
parser.add_argument("-i", "--interface", metavar="IF",
2926
2791
help="Bind to interface IF")
2962
2827
parser.add_argument("--no-zeroconf", action="store_false",
2963
2828
dest="zeroconf", help="Do not use Zeroconf",
2964
2829
default=None)
2965
2830
2966
2831
options = parser.parse_args()
2967
2832
2968
2833
if options.check:
2969
2834
import doctest
2970
2835
fail_count, test_count = doctest.testmod()
2971
2836
sys.exit(os.EX_OK if fail_count == 0 else 1)
2972
2837
2973
2838
# Default values for config file for server-global settings
2974
if gnutls.has_rawpk:
2975
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2976
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2977
else:
2978
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2979
":+SIGN-DSA-SHA256")
2980
server_defaults = {"interface": "",
2981
"address": "",
2982
"port": "",
2983
"debug": "False",
2984
"priority": priority,
2985
"servicename": "Mandos",
2986
"use_dbus": "True",
2987
"use_ipv6": "True",
2988
"debuglevel": "",
2989
"restore": "True",
2990
"socket": "",
2991
"statedir": "/var/lib/mandos",
2992
"foreground": "False",
2993
"zeroconf": "True",
2994
}
2995
del priority
2996
2839
server_defaults = { "interface": "",
2840
"address": "",
2841
"port": "",
2842
"debug": "False",
2843
"priority":
2844
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2845
":+SIGN-DSA-SHA256",
2846
"servicename": "Mandos",
2847
"use_dbus": "True",
2848
"use_ipv6": "True",
2849
"debuglevel": "",
2850
"restore": "True",
2851
"socket": "",
2852
"statedir": "/var/lib/mandos",
2853
"foreground": "False",
2854
"zeroconf": "True",
2855
}
2856
2997
2857
# Parse config file for server-global settings
2998
2858
server_config = configparser.SafeConfigParser(server_defaults)
2999
2859
del server_defaults
3001
2861
# Convert the SafeConfigParser object to a dict
3002
2862
server_settings = server_config.defaults()
3003
2863
# Use the appropriate methods on the non-string config options
3004
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3005
"foreground", "zeroconf"):
2864
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3006
2865
server_settings[option] = server_config.getboolean("DEFAULT",
3007
2866
option)
3008
2867
if server_settings["port"]:
3018
2877
server_settings["socket"] = os.dup(server_settings
3019
2878
["socket"])
3020
2879
del server_config
3021
2880
3022
2881
# Override the settings from the config file with command line
3023
2882
# options, if set.
3024
2883
for option in ("interface", "address", "port", "debug",
3042
2901
if server_settings["debug"]:
3043
2902
server_settings["foreground"] = True
3044
2903
# Now we have our good server settings in "server_settings"
3045
2904
3046
2905
##################################################################
3047
2906
3048
2907
if (not server_settings["zeroconf"]
3049
2908
and not (server_settings["port"]
3050
2909
or server_settings["socket"] != "")):
3051
2910
parser.error("Needs port or socket to work without Zeroconf")
3052
2911
3053
2912
# For convenience
3054
2913
debug = server_settings["debug"]
3055
2914
debuglevel = server_settings["debuglevel"]
3059
2918
stored_state_file)
3060
2919
foreground = server_settings["foreground"]
3061
2920
zeroconf = server_settings["zeroconf"]
3062
2921
3063
2922
if debug:
3064
2923
initlogger(debug, logging.DEBUG)
3065
2924
else:
3068
2927
else:
3069
2928
level = getattr(logging, debuglevel.upper())
3070
2929
initlogger(debug, level)
3071
2930
3072
2931
if server_settings["servicename"] != "Mandos":
3073
2932
syslogger.setFormatter(
3074
2933
logging.Formatter('Mandos ({}) [%(process)d]:'
3075
2934
' %(levelname)s: %(message)s'.format(
3076
2935
server_settings["servicename"])))
3077
2936
3078
2937
# Parse config file with clients
3079
2938
client_config = configparser.SafeConfigParser(Client
3080
2939
.client_defaults)
3081
2940
client_config.read(os.path.join(server_settings["configdir"],
3082
2941
"clients.conf"))
3083
2942
3084
2943
global mandos_dbus_service
3085
2944
mandos_dbus_service = None
3086
2945
3087
2946
socketfd = None
3088
2947
if server_settings["socket"] != "":
3089
2948
socketfd = server_settings["socket"]
3105
2964
except IOError as e:
3106
2965
logger.error("Could not open file %r", pidfilename,
3107
2966
exc_info=e)
3108
2967
3109
2968
for name, group in (("_mandos", "_mandos"),
3110
2969
("mandos", "mandos"),
3111
2970
("nobody", "nogroup")):
3129
2988
.format(uid, gid, os.strerror(error.errno)))
3130
2989
if error.errno != errno.EPERM:
3131
2990
raise
3132
2991
3133
2992
if debug:
3134
2993
# Enable all possible GnuTLS debugging
3135
2994
3136
2995
# "Use a log level over 10 to enable all debugging options."
3137
2996
# - GnuTLS manual
3138
2997
gnutls.global_set_log_level(11)
3139
2998
3140
2999
@gnutls.log_func
3141
3000
def debug_gnutls(level, string):
3142
3001
logger.debug("GnuTLS: %s", string[:-1])
3143
3002
3144
3003
gnutls.global_set_log_function(debug_gnutls)
3145
3004
3146
3005
# Redirect stdin so all checkers get /dev/null
3147
3006
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3148
3007
os.dup2(null, sys.stdin.fileno())
3149
3008
if null > 2:
3150
3009
os.close(null)
3151
3010
3152
3011
# Need to fork before connecting to D-Bus
3153
3012
if not foreground:
3154
3013
# Close all input and output, do double fork, etc.
3155
3014
daemon()
3156
3015
3157
3016
# multiprocessing will use threads, so before we use GLib we need
3158
3017
# to inform GLib that threads will be used.
3159
3018
GLib.threads_init()
3160
3019
3161
3020
global main_loop
3162
3021
# From the Avahi example code
3163
3022
DBusGMainLoop(set_as_default=True)
3180
3039
if zeroconf:
3181
3040
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3182
3041
service = AvahiServiceToSyslog(
3183
name=server_settings["servicename"],
3184
servicetype="_mandos._tcp",
3185
protocol=protocol,
3186
bus=bus)
3042
name = server_settings["servicename"],
3043
servicetype = "_mandos._tcp",
3044
protocol = protocol,
3045
bus = bus)
3187
3046
if server_settings["interface"]:
3188
3047
service.interface = if_nametoindex(
3189
3048
server_settings["interface"].encode("utf-8"))
3190
3049
3191
3050
global multiprocessing_manager
3192
3051
multiprocessing_manager = multiprocessing.Manager()
3193
3052
3194
3053
client_class = Client
3195
3054
if use_dbus:
3196
client_class = functools.partial(ClientDBus, bus=bus)
3197
3055
client_class = functools.partial(ClientDBus, bus = bus)
3056
3198
3057
client_settings = Client.config_parser(client_config)
3199
3058
old_client_settings = {}
3200
3059
clients_data = {}
3201
3060
3202
3061
# This is used to redirect stdout and stderr for checker processes
3203
3062
global wnull
3204
wnull = open(os.devnull, "w") # A writable /dev/null
3063
wnull = open(os.devnull, "w") # A writable /dev/null
3205
3064
# Only used if server is running in foreground but not in debug
3206
3065
# mode
3207
3066
if debug or not foreground:
3208
3067
wnull.close()
3209
3068
3210
3069
# Get client data and settings from last running state.
3211
3070
if server_settings["restore"]:
3212
3071
try:
3213
3072
with open(stored_state_path, "rb") as stored_state:
3214
if sys.version_info.major == 2:
3073
if sys.version_info.major == 2:
3215
3074
clients_data, old_client_settings = pickle.load(
3216
3075
stored_state)
3217
3076
else:
3218
3077
bytes_clients_data, bytes_old_client_settings = (
3219
pickle.load(stored_state, encoding="bytes"))
3220
# Fix bytes to strings
3221
# clients_data
3078
pickle.load(stored_state, encoding = "bytes"))
3079
### Fix bytes to strings
3080
## clients_data
3222
3081
# .keys()
3223
clients_data = {(key.decode("utf-8")
3224
if isinstance(key, bytes)
3225
else key): value
3226
for key, value in
3227
bytes_clients_data.items()}
3082
clients_data = { (key.decode("utf-8")
3083
if isinstance(key, bytes)
3084
else key): value
3085
for key, value in
3086
bytes_clients_data.items() }
3228
3087
del bytes_clients_data
3229
3088
for key in clients_data:
3230
value = {(k.decode("utf-8")
3231
if isinstance(k, bytes) else k): v
3232
for k, v in
3233
clients_data[key].items()}
3089
value = { (k.decode("utf-8")
3090
if isinstance(k, bytes) else k): v
3091
for k, v in
3092
clients_data[key].items() }
3234
3093
clients_data[key] = value
3235
3094
# .client_structure
3236
3095
value["client_structure"] = [
3237
3096
(s.decode("utf-8")
3238
3097
if isinstance(s, bytes)
3239
3098
else s) for s in
3240
value["client_structure"]]
3099
value["client_structure"] ]
3241
3100
# .name & .host
3242
3101
for k in ("name", "host"):
3243
3102
if isinstance(value[k], bytes):
3244
3103
value[k] = value[k].decode("utf-8")
3245
if not value.has_key("key_id"):
3246
value["key_id"] = ""
3247
elif not value.has_key("fingerprint"):
3248
value["fingerprint"] = ""
3249
# old_client_settings
3104
## old_client_settings
3250
3105
# .keys()
3251
3106
old_client_settings = {
3252
3107
(key.decode("utf-8")
3253
3108
if isinstance(key, bytes)
3254
3109
else key): value
3255
3110
for key, value in
3256
bytes_old_client_settings.items()}
3111
bytes_old_client_settings.items() }
3257
3112
del bytes_old_client_settings
3258
3113
# .host
3259
3114
for value in old_client_settings.values():
3273
3128
logger.warning("Could not load persistent state: "
3274
3129
"EOFError:",
3275
3130
exc_info=e)
3276
3131
3277
3132
with PGPEngine() as pgp:
3278
3133
for client_name, client in clients_data.items():
3279
3134
# Skip removed clients
3280
3135
if client_name not in client_settings:
3281
3136
continue
3282
3137
3283
3138
# Decide which value to use after restoring saved state.
3284
3139
# We have three different values: Old config file,
3285
3140
# new config file, and saved state.
3296
3151
client[name] = value
3297
3152
except KeyError:
3298
3153
pass
3299
3154
3300
3155
# Clients who has passed its expire date can still be
3301
3156
# enabled if its last checker was successful. A Client
3302
3157
# whose checker succeeded before we stored its state is
3335
3190
client_name))
3336
3191
client["secret"] = (client_settings[client_name]
3337
3192
["secret"])
3338
3193
3339
3194
# Add/remove clients based on new changes made to config
3340
3195
for client_name in (set(old_client_settings)
3341
3196
- set(client_settings)):
3343
3198
for client_name in (set(client_settings)
3344
3199
- set(old_client_settings)):
3345
3200
clients_data[client_name] = client_settings[client_name]
3346
3201
3347
3202
# Create all client objects
3348
3203
for client_name, client in clients_data.items():
3349
3204
tcp_server.clients[client_name] = client_class(
3350
name=client_name,
3351
settings=client,
3352
server_settings=server_settings)
3353
3205
name = client_name,
3206
settings = client,
3207
server_settings = server_settings)
3208
3354
3209
if not tcp_server.clients:
3355
3210
logger.warning("No clients defined")
3356
3211
3357
3212
if not foreground:
3358
3213
if pidfile is not None:
3359
3214
pid = os.getpid()
3365
3220
pidfilename, pid)
3366
3221
del pidfile
3367
3222
del pidfilename
3368
3223
3369
3224
for termsig in (signal.SIGHUP, signal.SIGTERM):
3370
3225
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3371
3226
lambda: main_loop.quit() and False)
3372
3227
3373
3228
if use_dbus:
3374
3229
3375
3230
@alternate_dbus_interfaces(
3376
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3231
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3377
3232
class MandosDBusService(DBusObjectWithObjectManager):
3378
3233
"""A D-Bus proxy object"""
3379
3234
3380
3235
def __init__(self):
3381
3236
dbus.service.Object.__init__(self, bus, "/")
3382
3237
3383
3238
_interface = "se.recompile.Mandos"
3384
3239
3385
3240
@dbus.service.signal(_interface, signature="o")
3386
3241
def ClientAdded(self, objpath):
3387
3242
"D-Bus signal"
3388
3243
pass
3389
3244
3390
3245
@dbus.service.signal(_interface, signature="ss")
3391
def ClientNotFound(self, key_id, address):
3246
def ClientNotFound(self, fingerprint, address):
3392
3247
"D-Bus signal"
3393
3248
pass
3394
3249
3395
3250
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3396
3251
"true"})
3397
3252
@dbus.service.signal(_interface, signature="os")
3398
3253
def ClientRemoved(self, objpath, name):
3399
3254
"D-Bus signal"
3400
3255
pass
3401
3256
3402
3257
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3403
3258
"true"})
3404
3259
@dbus.service.method(_interface, out_signature="ao")
3406
3261
"D-Bus method"
3407
3262
return dbus.Array(c.dbus_object_path for c in
3408
3263
tcp_server.clients.values())
3409
3264
3410
3265
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3411
3266
"true"})
3412
3267
@dbus.service.method(_interface,
3414
3269
def GetAllClientsWithProperties(self):
3415
3270
"D-Bus method"
3416
3271
return dbus.Dictionary(
3417
{c.dbus_object_path: c.GetAll(
3272
{ c.dbus_object_path: c.GetAll(
3418
3273
"se.recompile.Mandos.Client")
3419
for c in tcp_server.clients.values()},
3274
for c in tcp_server.clients.values() },
3420
3275
signature="oa{sv}")
3421
3276
3422
3277
@dbus.service.method(_interface, in_signature="o")
3423
3278
def RemoveClient(self, object_path):
3424
3279
"D-Bus method"
3432
3287
self.client_removed_signal(c)
3433
3288
return
3434
3289
raise KeyError(object_path)
3435
3290
3436
3291
del _interface
3437
3292
3438
3293
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3439
out_signature="a{oa{sa{sv}}}")
3294
out_signature = "a{oa{sa{sv}}}")
3440
3295
def GetManagedObjects(self):
3441
3296
"""D-Bus method"""
3442
3297
return dbus.Dictionary(
3443
{client.dbus_object_path:
3444
dbus.Dictionary(
3445
{interface: client.GetAll(interface)
3446
for interface in
3447
client._get_all_interface_names()})
3448
for client in tcp_server.clients.values()})
3449
3298
{ client.dbus_object_path:
3299
dbus.Dictionary(
3300
{ interface: client.GetAll(interface)
3301
for interface in
3302
client._get_all_interface_names()})
3303
for client in tcp_server.clients.values()})
3304
3450
3305
def client_added_signal(self, client):
3451
3306
"""Send the new standard signal and the old signal"""
3452
3307
if use_dbus:
3454
3309
self.InterfacesAdded(
3455
3310
client.dbus_object_path,
3456
3311
dbus.Dictionary(
3457
{interface: client.GetAll(interface)
3458
for interface in
3459
client._get_all_interface_names()}))
3312
{ interface: client.GetAll(interface)
3313
for interface in
3314
client._get_all_interface_names()}))
3460
3315
# Old signal
3461
3316
self.ClientAdded(client.dbus_object_path)
3462
3317
3463
3318
def client_removed_signal(self, client):
3464
3319
"""Send the new standard signal and the old signal"""
3465
3320
if use_dbus:
3470
3325
# Old signal
3471
3326
self.ClientRemoved(client.dbus_object_path,
3472
3327
client.name)
3473
3328
3474
3329
mandos_dbus_service = MandosDBusService()
3475
3330
3476
3331
# Save modules to variables to exempt the modules from being
3477
3332
# unloaded before the function registered with atexit() is run.
3478
3333
mp = multiprocessing
3479
3334
wn = wnull
3480
3481
3335
def cleanup():
3482
3336
"Cleanup function; run on exit"
3483
3337
if zeroconf:
3484
3338
service.cleanup()
3485
3339
3486
3340
mp.active_children()
3487
3341
wn.close()
3488
3342
if not (tcp_server.clients or client_settings):
3489
3343
return
3490
3344
3491
3345
# Store client before exiting. Secrets are encrypted with key
3492
3346
# based on what config file has. If config file is
3493
3347
# removed/edited, old secret will thus be unrecovable.
3498
3352
client.encrypted_secret = pgp.encrypt(client.secret,
3499
3353
key)
3500
3354
client_dict = {}
3501
3355
3502
3356
# A list of attributes that can not be pickled
3503
3357
# + secret.
3504
exclude = {"bus", "changedstate", "secret",
3505
"checker", "server_settings"}
3358
exclude = { "bus", "changedstate", "secret",
3359
"checker", "server_settings" }
3506
3360
for name, typ in inspect.getmembers(dbus.service
3507
3361
.Object):
3508
3362
exclude.add(name)
3509
3363
3510
3364
client_dict["encrypted_secret"] = (client
3511
3365
.encrypted_secret)
3512
3366
for attr in client.client_structure:
3513
3367
if attr not in exclude:
3514
3368
client_dict[attr] = getattr(client, attr)
3515
3369
3516
3370
clients[client.name] = client_dict
3517
3371
del client_settings[client.name]["secret"]
3518
3372
3519
3373
try:
3520
3374
with tempfile.NamedTemporaryFile(
3521
3375
mode='wb',
3524
3378
dir=os.path.dirname(stored_state_path),
3525
3379
delete=False) as stored_state:
3526
3380
pickle.dump((clients, client_settings), stored_state,
3527
protocol=2)
3381
protocol = 2)
3528
3382
tempname = stored_state.name
3529
3383
os.rename(tempname, stored_state_path)
3530
3384
except (IOError, OSError) as e:
3540
3394
logger.warning("Could not save persistent state:",
3541
3395
exc_info=e)
3542
3396
raise
3543
3397
3544
3398
# Delete all clients, and settings from config
3545
3399
while tcp_server.clients:
3546
3400
name, client = tcp_server.clients.popitem()
3552
3406
if use_dbus:
3553
3407
mandos_dbus_service.client_removed_signal(client)
3554
3408
client_settings.clear()
3555
3409
3556
3410
atexit.register(cleanup)
3557
3411
3558
3412
for client in tcp_server.clients.values():
3559
3413
if use_dbus:
3560
3414
# Emit D-Bus signal for adding
3562
3416
# Need to initiate checking of clients
3563
3417
if client.enabled:
3564
3418
client.init_checker()
3565
3419
3566
3420
tcp_server.enable()
3567
3421
tcp_server.server_activate()
3568
3422
3569
3423
# Find out what port we got
3570
3424
if zeroconf:
3571
3425
service.port = tcp_server.socket.getsockname()[1]
3576
3430
else: # IPv4
3577
3431
logger.info("Now listening on address %r, port %d",
3578
3432
*tcp_server.socket.getsockname())
3579
3580
# service.interface = tcp_server.socket.getsockname()[3]
3581
3433
3434
#service.interface = tcp_server.socket.getsockname()[3]
3435
3582
3436
try:
3583
3437
if zeroconf:
3584
3438
# From the Avahi example code
3589
3443
cleanup()
3590
3444
sys.exit(1)
3591
3445
# End of Avahi example code
3592
3446
3593
3447
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3594
3448
lambda *args, **kwargs:
3595
3449
(tcp_server.handle_request
3596
3450
(*args[2:], **kwargs) or True))
3597
3451
3598
3452
logger.debug("Starting main loop")
3599
3453
main_loop.run()
3600
3454
except AvahiError as error:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0