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- Committer: Teddy Hogeborn
- Date: 2015-06-28 16:35:27 UTC
- mto: This revision was merged to the branch mainline in revision 759.
- Revision ID: teddy@recompile.se-20150628163527-cky0ec59zew7teua
Add a plugin helper directory, available to all plugins.
* Makefile (PLUGIN_HELPERS): New; list of plugin helpers.
(CPROGS): Appended "$(PLUGIN_HELPERS)".
* initramfs-tools-hook: Create new plugin helper directory, and copy
plugin helpers provided by the system and/or
by the local administrator.
(PLUGINHELPERDIR): New.
* plugin-runner.c: Take new --plugin-helper-dir option and provide
environment variable to all plugins.
(PHDIR): New; set to "/lib/mandos/plugin-helpers".
(main/pluginhelperdir): New.
(main/options): New option "--plugin-helper-dir".
(main/parse_opt, main/parse_opt_config_file): Accept new option.
(main): Use new option to set MANDOSPLUGINHELPERDIR environment
variable as if using --global-env MANDOSPLUGINHELPERDIR=...
* plugin-runner.xml: Document new --plugin-helper-dir option.
(SYNOPSIS, OPTIONS): Add "--plugin-helper-dir" option.
(PLUGINS/WRITING PLUGINS): Document new environment variable
available to plugins.
(ENVIRONMENT): Document new environment variable
"MANDOSPLUGINHELPERDIR" affected by the new
--plugin-helper-dir option.
* Makefile (PLUGIN_HELPERS): New; list of plugin helpers.
(CPROGS): Appended "$(PLUGIN_HELPERS)".
* initramfs-tools-hook: Create new plugin helper directory, and copy
plugin helpers provided by the system and/or
by the local administrator.
(PLUGINHELPERDIR): New.
* plugin-runner.c: Take new --plugin-helper-dir option and provide
environment variable to all plugins.
(PHDIR): New; set to "/lib/mandos/plugin-helpers".
(main/pluginhelperdir): New.
(main/options): New option "--plugin-helper-dir".
(main/parse_opt, main/parse_opt_config_file): Accept new option.
(main): Use new option to set MANDOSPLUGINHELPERDIR environment
variable as if using --global-env MANDOSPLUGINHELPERDIR=...
* plugin-runner.xml: Document new --plugin-helper-dir option.
(SYNOPSIS, OPTIONS): Add "--plugin-helper-dir" option.
(PLUGINS/WRITING PLUGINS): Document new environment variable
available to plugins.
(ENVIRONMENT): Document new environment variable
"MANDOSPLUGINHELPERDIR" affected by the new
--plugin-helper-dir option.
- files added:
- debian/mandos-client.examples
- debian/source
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python
1
#!/usr/bin/python2.7
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# -*- mode: python; coding: utf-8 -*-
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#
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# Mandos server - give out binary blobs to connecting clients.
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# "AvahiService" class, and some lines in "main".
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#
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# Everything else is
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# Copyright © 2008-2010 Teddy Hogeborn
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# Copyright © 2008-2010 Björn Påhlsson
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# Copyright © 2008-2014 Teddy Hogeborn
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# Copyright © 2008-2014 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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# 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@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
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#
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from __future__ import division, with_statement, absolute_import
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
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from future_builtins import *
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import SocketServer as socketserver
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import socket
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import optparse
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import argparse
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import datetime
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import errno
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import gnutls.crypto
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import functools
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import cPickle as pickle
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import multiprocessing
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import types
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import binascii
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import tempfile
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import itertools
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import collections
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import dbus
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import dbus.service
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except ImportError:
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SO_BINDTODEVICE = None
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version = "1.2"
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#logger = logging.getLogger(u'mandos')
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logger = logging.Logger(u'mandos')
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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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syslogger.setFormatter(logging.Formatter
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(u'Mandos [%(process)d]: %(levelname)s:'
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u' %(message)s'))
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logger.addHandler(syslogger)
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
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u' %(levelname)s:'
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u' %(message)s'))
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logger.addHandler(console)
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if sys.version_info.major == 2:
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str = unicode
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version = "1.6.9"
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stored_state_file = "clients.pickle"
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logger = logging.getLogger()
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syslogger = None
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try:
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if_nametoindex = (ctypes.cdll.LoadLibrary
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(ctypes.util.find_library("c"))
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.if_nametoindex)
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except (OSError, AttributeError):
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def if_nametoindex(interface):
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"Get an interface index the hard way, i.e. using fcntl()"
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SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
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with contextlib.closing(socket.socket()) as s:
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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
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struct.pack(b"16s16x", interface))
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interface_index = struct.unpack("I", ifreq[16:20])[0]
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return interface_index
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def initlogger(debug, level=logging.WARNING):
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"""init logger and add loglevel"""
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global syslogger
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syslogger = (logging.handlers.SysLogHandler
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(facility =
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logging.handlers.SysLogHandler.LOG_DAEMON,
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address = "/dev/log"))
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syslogger.setFormatter(logging.Formatter
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('Mandos [%(process)d]: %(levelname)s:'
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' %(message)s'))
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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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' [%(process)d]:'
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' %(levelname)s:'
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' %(message)s'))
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logger.addHandler(console)
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logger.setLevel(level)
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class PGPError(Exception):
139
"""Exception if encryption/decryption fails"""
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pass
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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.gnupgargs = ['--batch',
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'--home', self.tempdir,
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'--force-mdc',
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'--quiet',
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'--no-use-agent']
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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):
164
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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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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os.rmdir(os.path.join(root, dirname))
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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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encoded = b"mandos" + binascii.hexlify(password)
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if len(encoded) > 2048:
181
# GnuPG can't handle long passwords, so encode differently
182
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
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.replace(b"\n", b"\\n")
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.replace(b"\0", b"\\x00"))
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return encoded
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def encrypt(self, data, password):
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passphrase = self.password_encode(password)
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with tempfile.NamedTemporaryFile(dir=self.tempdir
190
) as passfile:
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passfile.write(passphrase)
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passfile.flush()
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proc = subprocess.Popen(['gpg', '--symmetric',
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'--passphrase-file',
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passfile.name]
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+ self.gnupgargs,
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stdin = subprocess.PIPE,
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stdout = subprocess.PIPE,
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stderr = subprocess.PIPE)
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ciphertext, err = proc.communicate(input = data)
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if proc.returncode != 0:
202
raise PGPError(err)
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return ciphertext
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def decrypt(self, data, password):
206
passphrase = self.password_encode(password)
207
with tempfile.NamedTemporaryFile(dir = self.tempdir
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) as passfile:
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passfile.write(passphrase)
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passfile.flush()
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proc = subprocess.Popen(['gpg', '--decrypt',
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'--passphrase-file',
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passfile.name]
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+ self.gnupgargs,
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stdin = subprocess.PIPE,
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stdout = subprocess.PIPE,
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stderr = subprocess.PIPE)
218
decrypted_plaintext, err = proc.communicate(input
219
= 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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class AvahiError(Exception):
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def __init__(self, value, *args, **kwargs):
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self.value = value
105
super(AvahiError, self).__init__(value, *args, **kwargs)
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def __unicode__(self):
107
return unicode(repr(self.value))
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return super(AvahiError, self).__init__(value, *args,
229
**kwargs)
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class AvahiServiceError(AvahiError):
110
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pass
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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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name: string; Example: u'Mandos'
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type: string; Example: u'_mandos._tcp'.
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See <http://www.dns-sd.org/ServiceTypes.html>
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name: string; Example: 'Mandos'
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type: string; Example: '_mandos._tcp'.
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See <https://www.iana.org/assignments/service-names-port-numbers>
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port: integer; what port to announce
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TXT: list of strings; TXT record for the service
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domain: string; Domain to publish on, default to .local if empty.
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server: D-Bus Server
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bus: dbus.SystemBus()
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"""
258
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def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
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servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
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domain = "", host = "", max_renames = 32768,
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protocol = avahi.PROTO_UNSPEC, bus = None):
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self.interface = interface
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self.name = name
150
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self.group = None # our entry group
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self.server = None
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self.bus = bus
153
def rename(self):
276
self.entry_group_state_changed_match = None
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def rename(self, remove=True):
154
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"""Derived from the Avahi example code"""
155
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if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
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u" after %i retries, exiting.",
281
logger.critical("No suitable Zeroconf service name found"
282
" after %i retries, exiting.",
158
283
self.rename_count)
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
284
raise AvahiServiceError("Too many renames")
285
self.name = str(self.server
286
.GetAlternativeServiceName(self.name))
287
self.rename_count += 1
288
logger.info("Changing Zeroconf service name to %r ...",
162
289
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
self.remove()
290
if remove:
291
self.remove()
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292
try:
169
293
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
172
self.cleanup()
173
os._exit(1)
174
self.rename_count += 1
294
except dbus.exceptions.DBusException as error:
295
if (error.get_dbus_name()
296
== "org.freedesktop.Avahi.CollisionError"):
297
logger.info("Local Zeroconf service name collision.")
298
return self.rename(remove=False)
299
else:
300
logger.critical("D-Bus Exception", exc_info=error)
301
self.cleanup()
302
os._exit(1)
303
175
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def remove(self):
176
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"""Derived from the Avahi example code"""
306
if self.entry_group_state_changed_match is not None:
307
self.entry_group_state_changed_match.remove()
308
self.entry_group_state_changed_match = None
177
309
if self.group is not None:
178
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self.group.Reset()
311
179
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def add(self):
180
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"""Derived from the Avahi example code"""
314
self.remove()
181
315
if self.group is None:
182
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self.group = dbus.Interface(
183
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self.bus.get_object(avahi.DBUS_NAME,
184
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self.server.EntryGroupNew()),
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319
avahi.DBUS_INTERFACE_ENTRY_GROUP)
186
self.group.connect_to_signal('StateChanged',
187
self
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.entry_group_state_changed)
189
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
320
self.entry_group_state_changed_match = (
321
self.group.connect_to_signal(
322
'StateChanged', self.entry_group_state_changed))
323
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
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self.name, self.type)
191
325
self.group.AddService(
192
326
self.interface,
197
331
dbus.UInt16(self.port),
198
332
avahi.string_array_to_txt_array(self.TXT))
199
333
self.group.Commit()
334
200
335
def entry_group_state_changed(self, state, error):
201
336
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
337
logger.debug("Avahi entry group state change: %i", state)
203
338
204
339
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
340
logger.debug("Zeroconf service established.")
206
341
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
342
logger.info("Zeroconf service name collision.")
208
343
self.rename()
209
344
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
211
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
213
% unicode(error))
345
logger.critical("Avahi: Error in group state changed %s",
346
str(error))
347
raise AvahiGroupError("State changed: {!s}"
348
.format(error))
349
214
350
def cleanup(self):
215
351
"""Derived from the Avahi example code"""
216
352
if self.group is not None:
217
self.group.Free()
353
try:
354
self.group.Free()
355
except (dbus.exceptions.UnknownMethodException,
356
dbus.exceptions.DBusException):
357
pass
218
358
self.group = None
219
def server_state_changed(self, state):
359
self.remove()
360
361
def server_state_changed(self, state, error=None):
220
362
"""Derived from the Avahi example code"""
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
224
self.remove()
363
logger.debug("Avahi server state change: %i", state)
364
bad_states = { avahi.SERVER_INVALID:
365
"Zeroconf server invalid",
366
avahi.SERVER_REGISTERING: None,
367
avahi.SERVER_COLLISION:
368
"Zeroconf server name collision",
369
avahi.SERVER_FAILURE:
370
"Zeroconf server failure" }
371
if state in bad_states:
372
if bad_states[state] is not None:
373
if error is None:
374
logger.error(bad_states[state])
375
else:
376
logger.error(bad_states[state] + ": %r", error)
377
self.cleanup()
225
378
elif state == avahi.SERVER_RUNNING:
226
379
self.add()
380
else:
381
if error is None:
382
logger.debug("Unknown state: %r", state)
383
else:
384
logger.debug("Unknown state: %r: %r", state, error)
385
227
386
def activate(self):
228
387
"""Derived from the Avahi example code"""
229
388
if self.server is None:
230
389
self.server = dbus.Interface(
231
390
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
391
avahi.DBUS_PATH_SERVER,
392
follow_name_owner_changes=True),
233
393
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
394
self.server.connect_to_signal("StateChanged",
235
395
self.server_state_changed)
236
396
self.server_state_changed(self.server.GetState())
237
397
238
398
399
class AvahiServiceToSyslog(AvahiService):
400
def rename(self, *args, **kwargs):
401
"""Add the new name to the syslog messages"""
402
ret = AvahiService.rename(self, *args, **kwargs)
403
syslogger.setFormatter(logging.Formatter
404
('Mandos ({}) [%(process)d]:'
405
' %(levelname)s: %(message)s'
406
.format(self.name)))
407
return ret
408
409
239
410
class Client(object):
240
411
"""A representation of a client host served by this server.
241
412
242
413
Attributes:
243
_approved: bool(); 'None' if not yet approved/disapproved
414
approved: bool(); 'None' if not yet approved/disapproved
244
415
approval_delay: datetime.timedelta(); Time to wait for approval
245
416
approval_duration: datetime.timedelta(); Duration of one approval
246
417
checker: subprocess.Popen(); a running checker process used
253
424
instance %(name)s can be used in the command.
254
425
checker_initiator_tag: a gobject event source tag, or None
255
426
created: datetime.datetime(); (UTC) object creation
427
client_structure: Object describing what attributes a client has
428
and is used for storing the client at exit
256
429
current_checker_command: string; current running checker_command
257
disable_hook: If set, called by disable() as disable_hook(self)
258
430
disable_initiator_tag: a gobject event source tag, or None
259
431
enabled: bool()
260
432
fingerprint: string (40 or 32 hexadecimal digits); used to
263
435
interval: datetime.timedelta(); How often to start a new checker
264
436
last_approval_request: datetime.datetime(); (UTC) or None
265
437
last_checked_ok: datetime.datetime(); (UTC) or None
266
last_enabled: datetime.datetime(); (UTC)
438
last_checker_status: integer between 0 and 255 reflecting exit
439
status of last checker. -1 reflects crashed
440
checker, -2 means no checker completed yet.
441
last_enabled: datetime.datetime(); (UTC) or None
267
442
name: string; from the config file, used in log messages and
268
443
D-Bus identifiers
269
444
secret: bytestring; sent verbatim (over TLS) to client
270
445
timeout: datetime.timedelta(); How long from last_checked_ok
271
446
until this client is disabled
447
extended_timeout: extra long timeout when secret has been sent
272
448
runtime_expansions: Allowed attributes for runtime expansion.
449
expires: datetime.datetime(); time (UTC) when a client will be
450
disabled, or None
451
server_settings: The server_settings dict from main()
273
452
"""
274
453
275
runtime_expansions = (u"approval_delay", u"approval_duration",
276
u"created", u"enabled", u"fingerprint",
277
u"host", u"interval", u"last_checked_ok",
278
u"last_enabled", u"name", u"timeout")
454
runtime_expansions = ("approval_delay", "approval_duration",
455
"created", "enabled", "expires",
456
"fingerprint", "host", "interval",
457
"last_approval_request", "last_checked_ok",
458
"last_enabled", "name", "timeout")
459
client_defaults = { "timeout": "PT5M",
460
"extended_timeout": "PT15M",
461
"interval": "PT2M",
462
"checker": "fping -q -- %%(host)s",
463
"host": "",
464
"approval_delay": "PT0S",
465
"approval_duration": "PT1S",
466
"approved_by_default": "True",
467
"enabled": "True",
468
}
279
469
280
470
@staticmethod
281
def _timedelta_to_milliseconds(td):
282
"Convert a datetime.timedelta() to milliseconds"
283
return ((td.days * 24 * 60 * 60 * 1000)
284
+ (td.seconds * 1000)
285
+ (td.microseconds // 1000))
286
287
def timeout_milliseconds(self):
288
"Return the 'timeout' attribute in milliseconds"
289
return self._timedelta_to_milliseconds(self.timeout)
290
291
def interval_milliseconds(self):
292
"Return the 'interval' attribute in milliseconds"
293
return self._timedelta_to_milliseconds(self.interval)
294
295
def approval_delay_milliseconds(self):
296
return self._timedelta_to_milliseconds(self.approval_delay)
297
298
def __init__(self, name = None, disable_hook=None, config=None):
299
"""Note: the 'checker' key in 'config' sets the
300
'checker_command' attribute and *not* the 'checker'
301
attribute."""
471
def config_parser(config):
472
"""Construct a new dict of client settings of this form:
473
{ client_name: {setting_name: value, ...}, ...}
474
with exceptions for any special settings as defined above.
475
NOTE: Must be a pure function. Must return the same result
476
value given the same arguments.
477
"""
478
settings = {}
479
for client_name in config.sections():
480
section = dict(config.items(client_name))
481
client = settings[client_name] = {}
482
483
client["host"] = section["host"]
484
# Reformat values from string types to Python types
485
client["approved_by_default"] = config.getboolean(
486
client_name, "approved_by_default")
487
client["enabled"] = config.getboolean(client_name,
488
"enabled")
489
490
client["fingerprint"] = (section["fingerprint"].upper()
491
.replace(" ", ""))
492
if "secret" in section:
493
client["secret"] = section["secret"].decode("base64")
494
elif "secfile" in section:
495
with open(os.path.expanduser(os.path.expandvars
496
(section["secfile"])),
497
"rb") as secfile:
498
client["secret"] = secfile.read()
499
else:
500
raise TypeError("No secret or secfile for section {}"
501
.format(section))
502
client["timeout"] = string_to_delta(section["timeout"])
503
client["extended_timeout"] = string_to_delta(
504
section["extended_timeout"])
505
client["interval"] = string_to_delta(section["interval"])
506
client["approval_delay"] = string_to_delta(
507
section["approval_delay"])
508
client["approval_duration"] = string_to_delta(
509
section["approval_duration"])
510
client["checker_command"] = section["checker"]
511
client["last_approval_request"] = None
512
client["last_checked_ok"] = None
513
client["last_checker_status"] = -2
514
515
return settings
516
517
def __init__(self, settings, name = None, server_settings=None):
302
518
self.name = name
303
if config is None:
304
config = {}
305
logger.debug(u"Creating client %r", self.name)
519
if server_settings is None:
520
server_settings = {}
521
self.server_settings = server_settings
522
# adding all client settings
523
for setting, value in settings.items():
524
setattr(self, setting, value)
525
526
if self.enabled:
527
if not hasattr(self, "last_enabled"):
528
self.last_enabled = datetime.datetime.utcnow()
529
if not hasattr(self, "expires"):
530
self.expires = (datetime.datetime.utcnow()
531
+ self.timeout)
532
else:
533
self.last_enabled = None
534
self.expires = None
535
536
logger.debug("Creating client %r", self.name)
306
537
# Uppercase and remove spaces from fingerprint for later
307
538
# comparison purposes with return value from the fingerprint()
308
539
# function
309
self.fingerprint = (config[u"fingerprint"].upper()
310
.replace(u" ", u""))
311
logger.debug(u" Fingerprint: %s", self.fingerprint)
312
if u"secret" in config:
313
self.secret = config[u"secret"].decode(u"base64")
314
elif u"secfile" in config:
315
with open(os.path.expanduser(os.path.expandvars
316
(config[u"secfile"])),
317
"rb") as secfile:
318
self.secret = secfile.read()
319
else:
320
raise TypeError(u"No secret or secfile for client %s"
321
% self.name)
322
self.host = config.get(u"host", u"")
323
self.created = datetime.datetime.utcnow()
324
self.enabled = False
325
self.last_approval_request = None
326
self.last_enabled = None
327
self.last_checked_ok = None
328
self.timeout = string_to_delta(config[u"timeout"])
329
self.interval = string_to_delta(config[u"interval"])
330
self.disable_hook = disable_hook
540
logger.debug(" Fingerprint: %s", self.fingerprint)
541
self.created = settings.get("created",
542
datetime.datetime.utcnow())
543
544
# attributes specific for this server instance
331
545
self.checker = None
332
546
self.checker_initiator_tag = None
333
547
self.disable_initiator_tag = None
334
548
self.checker_callback_tag = None
335
self.checker_command = config[u"checker"]
336
549
self.current_checker_command = None
337
self.last_connect = None
338
self._approved = None
339
self.approved_by_default = config.get(u"approved_by_default",
340
True)
550
self.approved = None
341
551
self.approvals_pending = 0
342
self.approval_delay = string_to_delta(
343
config[u"approval_delay"])
344
self.approval_duration = string_to_delta(
345
config[u"approval_duration"])
346
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
552
self.changedstate = (multiprocessing_manager
553
.Condition(multiprocessing_manager
554
.Lock()))
555
self.client_structure = [attr for attr in
556
self.__dict__.iterkeys()
557
if not attr.startswith("_")]
558
self.client_structure.append("client_structure")
559
560
for name, t in inspect.getmembers(type(self),
561
lambda obj:
562
isinstance(obj,
563
property)):
564
if not name.startswith("_"):
565
self.client_structure.append(name)
347
566
567
# Send notice to process children that client state has changed
348
568
def send_changedstate(self):
349
self.changedstate.acquire()
350
self.changedstate.notify_all()
351
self.changedstate.release()
352
569
with self.changedstate:
570
self.changedstate.notify_all()
571
353
572
def enable(self):
354
573
"""Start this client's checker and timeout hooks"""
355
if getattr(self, u"enabled", False):
574
if getattr(self, "enabled", False):
356
575
# Already enabled
357
576
return
358
self.send_changedstate()
577
self.expires = datetime.datetime.utcnow() + self.timeout
578
self.enabled = True
359
579
self.last_enabled = datetime.datetime.utcnow()
580
self.init_checker()
581
self.send_changedstate()
582
583
def disable(self, quiet=True):
584
"""Disable this client."""
585
if not getattr(self, "enabled", False):
586
return False
587
if not quiet:
588
logger.info("Disabling client %s", self.name)
589
if getattr(self, "disable_initiator_tag", None) is not None:
590
gobject.source_remove(self.disable_initiator_tag)
591
self.disable_initiator_tag = None
592
self.expires = None
593
if getattr(self, "checker_initiator_tag", None) is not None:
594
gobject.source_remove(self.checker_initiator_tag)
595
self.checker_initiator_tag = None
596
self.stop_checker()
597
self.enabled = False
598
if not quiet:
599
self.send_changedstate()
600
# Do not run this again if called by a gobject.timeout_add
601
return False
602
603
def __del__(self):
604
self.disable()
605
606
def init_checker(self):
360
607
# Schedule a new checker to be started an 'interval' from now,
361
608
# and every interval from then on.
609
if self.checker_initiator_tag is not None:
610
gobject.source_remove(self.checker_initiator_tag)
362
611
self.checker_initiator_tag = (gobject.timeout_add
363
(self.interval_milliseconds(),
612
(int(self.interval
613
.total_seconds() * 1000),
364
614
self.start_checker))
365
615
# Schedule a disable() when 'timeout' has passed
616
if self.disable_initiator_tag is not None:
617
gobject.source_remove(self.disable_initiator_tag)
366
618
self.disable_initiator_tag = (gobject.timeout_add
367
(self.timeout_milliseconds(),
368
self.disable))
369
self.enabled = True
619
(int(self.timeout
620
.total_seconds() * 1000),
621
self.disable))
370
622
# Also start a new checker *right now*.
371
623
self.start_checker()
372
624
373
def disable(self, quiet=True):
374
"""Disable this client."""
375
if not getattr(self, "enabled", False):
376
return False
377
if not quiet:
378
self.send_changedstate()
379
if not quiet:
380
logger.info(u"Disabling client %s", self.name)
381
if getattr(self, u"disable_initiator_tag", False):
382
gobject.source_remove(self.disable_initiator_tag)
383
self.disable_initiator_tag = None
384
if getattr(self, u"checker_initiator_tag", False):
385
gobject.source_remove(self.checker_initiator_tag)
386
self.checker_initiator_tag = None
387
self.stop_checker()
388
if self.disable_hook:
389
self.disable_hook(self)
390
self.enabled = False
391
# Do not run this again if called by a gobject.timeout_add
392
return False
393
394
def __del__(self):
395
self.disable_hook = None
396
self.disable()
397
398
625
def checker_callback(self, pid, condition, command):
399
626
"""The checker has completed, so take appropriate actions."""
400
627
self.checker_callback_tag = None
401
628
self.checker = None
402
629
if os.WIFEXITED(condition):
403
exitstatus = os.WEXITSTATUS(condition)
404
if exitstatus == 0:
405
logger.info(u"Checker for %(name)s succeeded",
630
self.last_checker_status = os.WEXITSTATUS(condition)
631
if self.last_checker_status == 0:
632
logger.info("Checker for %(name)s succeeded",
406
633
vars(self))
407
634
self.checked_ok()
408
635
else:
409
logger.info(u"Checker for %(name)s failed",
636
logger.info("Checker for %(name)s failed",
410
637
vars(self))
411
638
else:
412
logger.warning(u"Checker for %(name)s crashed?",
639
self.last_checker_status = -1
640
logger.warning("Checker for %(name)s crashed?",
413
641
vars(self))
414
642
415
643
def checked_ok(self):
416
"""Bump up the timeout for this client.
417
418
This should only be called when the client has been seen,
419
alive and well.
420
"""
644
"""Assert that the client has been seen, alive and well."""
421
645
self.last_checked_ok = datetime.datetime.utcnow()
422
gobject.source_remove(self.disable_initiator_tag)
423
self.disable_initiator_tag = (gobject.timeout_add
424
(self.timeout_milliseconds(),
425
self.disable))
646
self.last_checker_status = 0
647
self.bump_timeout()
648
649
def bump_timeout(self, timeout=None):
650
"""Bump up the timeout for this client."""
651
if timeout is None:
652
timeout = self.timeout
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = None
656
if getattr(self, "enabled", False):
657
self.disable_initiator_tag = (gobject.timeout_add
658
(int(timeout.total_seconds()
659
* 1000), self.disable))
660
self.expires = datetime.datetime.utcnow() + timeout
426
661
427
662
def need_approval(self):
428
663
self.last_approval_request = datetime.datetime.utcnow()
433
668
If a checker already exists, leave it running and do
434
669
nothing."""
435
670
# The reason for not killing a running checker is that if we
436
# did that, then if a checker (for some reason) started
437
# running slowly and taking more than 'interval' time, the
438
# client would inevitably timeout, since no checker would get
439
# a chance to run to completion. If we instead leave running
671
# did that, and if a checker (for some reason) started running
672
# slowly and taking more than 'interval' time, then the client
673
# would inevitably timeout, since no checker would get a
674
# chance to run to completion. If we instead leave running
440
675
# checkers alone, the checker would have to take more time
441
676
# than 'timeout' for the client to be disabled, which is as it
442
677
# should be.
444
679
# If a checker exists, make sure it is not a zombie
445
680
try:
446
681
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
447
except (AttributeError, OSError), error:
448
if (isinstance(error, OSError)
449
and error.errno != errno.ECHILD):
450
raise error
682
except AttributeError:
683
pass
684
except OSError as error:
685
if error.errno != errno.ECHILD:
686
raise
451
687
else:
452
688
if pid:
453
logger.warning(u"Checker was a zombie")
689
logger.warning("Checker was a zombie")
454
690
gobject.source_remove(self.checker_callback_tag)
455
691
self.checker_callback(pid, status,
456
692
self.current_checker_command)
457
693
# Start a new checker if needed
458
694
if self.checker is None:
695
# Escape attributes for the shell
696
escaped_attrs = { attr:
697
re.escape(str(getattr(self, attr)))
698
for attr in self.runtime_expansions }
459
699
try:
460
# In case checker_command has exactly one % operator
461
command = self.checker_command % self.host
462
except TypeError:
463
# Escape attributes for the shell
464
escaped_attrs = dict(
465
(attr,
466
re.escape(unicode(str(getattr(self, attr, u"")),
467
errors=
468
u'replace')))
469
for attr in
470
self.runtime_expansions)
471
472
try:
473
command = self.checker_command % escaped_attrs
474
except TypeError, error:
475
logger.error(u'Could not format string "%s":'
476
u' %s', self.checker_command, error)
477
return True # Try again later
700
command = self.checker_command % escaped_attrs
701
except TypeError as error:
702
logger.error('Could not format string "%s"',
703
self.checker_command, exc_info=error)
704
return True # Try again later
478
705
self.current_checker_command = command
479
706
try:
480
logger.info(u"Starting checker %r for %s",
707
logger.info("Starting checker %r for %s",
481
708
command, self.name)
482
709
# We don't need to redirect stdout and stderr, since
483
710
# in normal mode, that is already done by daemon(),
484
711
# and in debug mode we don't want to. (Stdin is
485
712
# always replaced by /dev/null.)
713
# The exception is when not debugging but nevertheless
714
# running in the foreground; use the previously
715
# created wnull.
716
popen_args = {}
717
if (not self.server_settings["debug"]
718
and self.server_settings["foreground"]):
719
popen_args.update({"stdout": wnull,
720
"stderr": wnull })
486
721
self.checker = subprocess.Popen(command,
487
722
close_fds=True,
488
shell=True, cwd=u"/")
489
self.checker_callback_tag = (gobject.child_watch_add
490
(self.checker.pid,
491
self.checker_callback,
492
data=command))
493
# The checker may have completed before the gobject
494
# watch was added. Check for this.
723
shell=True, cwd="/",
724
**popen_args)
725
except OSError as error:
726
logger.error("Failed to start subprocess",
727
exc_info=error)
728
return True
729
self.checker_callback_tag = (gobject.child_watch_add
730
(self.checker.pid,
731
self.checker_callback,
732
data=command))
733
# The checker may have completed before the gobject
734
# watch was added. Check for this.
735
try:
495
736
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
496
if pid:
497
gobject.source_remove(self.checker_callback_tag)
498
self.checker_callback(pid, status, command)
499
except OSError, error:
500
logger.error(u"Failed to start subprocess: %s",
501
error)
737
except OSError as error:
738
if error.errno == errno.ECHILD:
739
# This should never happen
740
logger.error("Child process vanished",
741
exc_info=error)
742
return True
743
raise
744
if pid:
745
gobject.source_remove(self.checker_callback_tag)
746
self.checker_callback(pid, status, command)
502
747
# Re-run this periodically if run by gobject.timeout_add
503
748
return True
504
749
507
752
if self.checker_callback_tag:
508
753
gobject.source_remove(self.checker_callback_tag)
509
754
self.checker_callback_tag = None
510
if getattr(self, u"checker", None) is None:
755
if getattr(self, "checker", None) is None:
511
756
return
512
logger.debug(u"Stopping checker for %(name)s", vars(self))
757
logger.debug("Stopping checker for %(name)s", vars(self))
513
758
try:
514
os.kill(self.checker.pid, signal.SIGTERM)
759
self.checker.terminate()
515
760
#time.sleep(0.5)
516
761
#if self.checker.poll() is None:
517
# os.kill(self.checker.pid, signal.SIGKILL)
518
except OSError, error:
762
# self.checker.kill()
763
except OSError as error:
519
764
if error.errno != errno.ESRCH: # No such process
520
765
raise
521
766
self.checker = None
522
767
523
def dbus_service_property(dbus_interface, signature=u"v",
524
access=u"readwrite", byte_arrays=False):
768
769
def dbus_service_property(dbus_interface, signature="v",
770
access="readwrite", byte_arrays=False):
525
771
"""Decorators for marking methods of a DBusObjectWithProperties to
526
772
become properties on the D-Bus.
527
773
534
780
"""
535
781
# Encoding deeply encoded byte arrays is not supported yet by the
536
782
# "Set" method, so we fail early here:
537
if byte_arrays and signature != u"ay":
538
raise ValueError(u"Byte arrays not supported for non-'ay'"
539
u" signature %r" % signature)
783
if byte_arrays and signature != "ay":
784
raise ValueError("Byte arrays not supported for non-'ay'"
785
" signature {!r}".format(signature))
540
786
def decorator(func):
541
787
func._dbus_is_property = True
542
788
func._dbus_interface = dbus_interface
543
789
func._dbus_signature = signature
544
790
func._dbus_access = access
545
791
func._dbus_name = func.__name__
546
if func._dbus_name.endswith(u"_dbus_property"):
792
if func._dbus_name.endswith("_dbus_property"):
547
793
func._dbus_name = func._dbus_name[:-14]
548
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
794
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
795
return func
796
return decorator
797
798
799
def dbus_interface_annotations(dbus_interface):
800
"""Decorator for marking functions returning interface annotations
801
802
Usage:
803
804
@dbus_interface_annotations("org.example.Interface")
805
def _foo(self): # Function name does not matter
806
return {"org.freedesktop.DBus.Deprecated": "true",
807
"org.freedesktop.DBus.Property.EmitsChangedSignal":
808
"false"}
809
"""
810
def decorator(func):
811
func._dbus_is_interface = True
812
func._dbus_interface = dbus_interface
813
func._dbus_name = dbus_interface
814
return func
815
return decorator
816
817
818
def dbus_annotations(annotations):
819
"""Decorator to annotate D-Bus methods, signals or properties
820
Usage:
821
822
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
823
"org.freedesktop.DBus.Property."
824
"EmitsChangedSignal": "false"})
825
@dbus_service_property("org.example.Interface", signature="b",
826
access="r")
827
def Property_dbus_property(self):
828
return dbus.Boolean(False)
829
"""
830
def decorator(func):
831
func._dbus_annotations = annotations
549
832
return func
550
833
return decorator
551
834
553
836
class DBusPropertyException(dbus.exceptions.DBusException):
554
837
"""A base class for D-Bus property-related exceptions
555
838
"""
556
def __unicode__(self):
557
return unicode(str(self))
558
839
pass
559
840
560
841
class DBusPropertyAccessException(DBusPropertyException):
561
842
"""A property's access permissions disallows an operation.
571
852
572
853
class DBusObjectWithProperties(dbus.service.Object):
573
854
"""A D-Bus object with properties.
574
855
575
856
Classes inheriting from this can use the dbus_service_property
576
857
decorator to expose methods as D-Bus properties. It exposes the
577
858
standard Get(), Set(), and GetAll() methods on the D-Bus.
578
859
"""
579
860
580
861
@staticmethod
581
def _is_dbus_property(obj):
582
return getattr(obj, u"_dbus_is_property", False)
862
def _is_dbus_thing(thing):
863
"""Returns a function testing if an attribute is a D-Bus thing
864
865
If called like _is_dbus_thing("method") it returns a function
866
suitable for use as predicate to inspect.getmembers().
867
"""
868
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
869
False)
583
870
584
def _get_all_dbus_properties(self):
871
def _get_all_dbus_things(self, thing):
585
872
"""Returns a generator of (name, attribute) pairs
586
873
"""
587
return ((prop._dbus_name, prop)
588
for name, prop in
589
inspect.getmembers(self, self._is_dbus_property))
874
return ((getattr(athing.__get__(self), "_dbus_name",
875
name),
876
athing.__get__(self))
877
for cls in self.__class__.__mro__
878
for name, athing in
879
inspect.getmembers(cls,
880
self._is_dbus_thing(thing)))
590
881
591
882
def _get_dbus_property(self, interface_name, property_name):
592
883
"""Returns a bound method if one exists which is a D-Bus
593
884
property with the specified name and interface.
594
885
"""
595
for name in (property_name,
596
property_name + u"_dbus_property"):
597
prop = getattr(self, name, None)
598
if (prop is None
599
or not self._is_dbus_property(prop)
600
or prop._dbus_name != property_name
601
or (interface_name and prop._dbus_interface
602
and interface_name != prop._dbus_interface)):
603
continue
604
return prop
886
for cls in self.__class__.__mro__:
887
for name, value in (inspect.getmembers
888
(cls,
889
self._is_dbus_thing("property"))):
890
if (value._dbus_name == property_name
891
and value._dbus_interface == interface_name):
892
return value.__get__(self)
893
605
894
# No such property
606
raise DBusPropertyNotFound(self.dbus_object_path + u":"
607
+ interface_name + u"."
895
raise DBusPropertyNotFound(self.dbus_object_path + ":"
896
+ interface_name + "."
608
897
+ property_name)
609
898
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
611
out_signature=u"v")
899
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
900
out_signature="v")
612
901
def Get(self, interface_name, property_name):
613
902
"""Standard D-Bus property Get() method, see D-Bus standard.
614
903
"""
615
904
prop = self._get_dbus_property(interface_name, property_name)
616
if prop._dbus_access == u"write":
905
if prop._dbus_access == "write":
617
906
raise DBusPropertyAccessException(property_name)
618
907
value = prop()
619
if not hasattr(value, u"variant_level"):
908
if not hasattr(value, "variant_level"):
620
909
return value
621
910
return type(value)(value, variant_level=value.variant_level+1)
622
911
623
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
624
913
def Set(self, interface_name, property_name, value):
625
914
"""Standard D-Bus property Set() method, see D-Bus standard.
626
915
"""
627
916
prop = self._get_dbus_property(interface_name, property_name)
628
if prop._dbus_access == u"read":
917
if prop._dbus_access == "read":
629
918
raise DBusPropertyAccessException(property_name)
630
if prop._dbus_get_args_options[u"byte_arrays"]:
919
if prop._dbus_get_args_options["byte_arrays"]:
631
920
# The byte_arrays option is not supported yet on
632
921
# signatures other than "ay".
633
if prop._dbus_signature != u"ay":
634
raise ValueError
635
value = dbus.ByteArray(''.join(unichr(byte)
636
for byte in value))
922
if prop._dbus_signature != "ay":
923
raise ValueError("Byte arrays not supported for non-"
924
"'ay' signature {!r}"
925
.format(prop._dbus_signature))
926
value = dbus.ByteArray(b''.join(chr(byte)
927
for byte in value))
637
928
prop(value)
638
929
639
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
640
out_signature=u"a{sv}")
930
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
931
out_signature="a{sv}")
641
932
def GetAll(self, interface_name):
642
933
"""Standard D-Bus property GetAll() method, see D-Bus
643
934
standard.
644
935
645
936
Note: Will not include properties with access="write".
646
937
"""
647
all = {}
648
for name, prop in self._get_all_dbus_properties():
938
properties = {}
939
for name, prop in self._get_all_dbus_things("property"):
649
940
if (interface_name
650
941
and interface_name != prop._dbus_interface):
651
942
# Interface non-empty but did not match
652
943
continue
653
944
# Ignore write-only properties
654
if prop._dbus_access == u"write":
945
if prop._dbus_access == "write":
655
946
continue
656
947
value = prop()
657
if not hasattr(value, u"variant_level"):
658
all[name] = value
948
if not hasattr(value, "variant_level"):
949
properties[name] = value
659
950
continue
660
all[name] = type(value)(value, variant_level=
661
value.variant_level+1)
662
return dbus.Dictionary(all, signature=u"sv")
951
properties[name] = type(value)(value, variant_level=
952
value.variant_level+1)
953
return dbus.Dictionary(properties, signature="sv")
954
955
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
956
def PropertiesChanged(self, interface_name, changed_properties,
957
invalidated_properties):
958
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
959
standard.
960
"""
961
pass
663
962
664
963
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
665
out_signature=u"s",
964
out_signature="s",
666
965
path_keyword='object_path',
667
966
connection_keyword='connection')
668
967
def Introspect(self, object_path, connection):
669
"""Standard D-Bus method, overloaded to insert property tags.
968
"""Overloading of standard D-Bus method.
969
970
Inserts property tags and interface annotation tags.
670
971
"""
671
972
xmlstring = dbus.service.Object.Introspect(self, object_path,
672
973
connection)
673
974
try:
674
975
document = xml.dom.minidom.parseString(xmlstring)
675
976
def make_tag(document, name, prop):
676
e = document.createElement(u"property")
677
e.setAttribute(u"name", name)
678
e.setAttribute(u"type", prop._dbus_signature)
679
e.setAttribute(u"access", prop._dbus_access)
977
e = document.createElement("property")
978
e.setAttribute("name", name)
979
e.setAttribute("type", prop._dbus_signature)
980
e.setAttribute("access", prop._dbus_access)
680
981
return e
681
for if_tag in document.getElementsByTagName(u"interface"):
982
for if_tag in document.getElementsByTagName("interface"):
983
# Add property tags
682
984
for tag in (make_tag(document, name, prop)
683
985
for name, prop
684
in self._get_all_dbus_properties()
986
in self._get_all_dbus_things("property")
685
987
if prop._dbus_interface
686
== if_tag.getAttribute(u"name")):
988
== if_tag.getAttribute("name")):
687
989
if_tag.appendChild(tag)
990
# Add annotation tags
991
for typ in ("method", "signal", "property"):
992
for tag in if_tag.getElementsByTagName(typ):
993
annots = dict()
994
for name, prop in (self.
995
_get_all_dbus_things(typ)):
996
if (name == tag.getAttribute("name")
997
and prop._dbus_interface
998
== if_tag.getAttribute("name")):
999
annots.update(getattr
1000
(prop,
1001
"_dbus_annotations",
1002
{}))
1003
for name, value in annots.items():
1004
ann_tag = document.createElement(
1005
"annotation")
1006
ann_tag.setAttribute("name", name)
1007
ann_tag.setAttribute("value", value)
1008
tag.appendChild(ann_tag)
1009
# Add interface annotation tags
1010
for annotation, value in dict(
1011
itertools.chain.from_iterable(
1012
annotations().items()
1013
for name, annotations in
1014
self._get_all_dbus_things("interface")
1015
if name == if_tag.getAttribute("name")
1016
)).items():
1017
ann_tag = document.createElement("annotation")
1018
ann_tag.setAttribute("name", annotation)
1019
ann_tag.setAttribute("value", value)
1020
if_tag.appendChild(ann_tag)
688
1021
# Add the names to the return values for the
689
1022
# "org.freedesktop.DBus.Properties" methods
690
if (if_tag.getAttribute(u"name")
691
== u"org.freedesktop.DBus.Properties"):
692
for cn in if_tag.getElementsByTagName(u"method"):
693
if cn.getAttribute(u"name") == u"Get":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
696
== u"out"):
697
arg.setAttribute(u"name", u"value")
698
elif cn.getAttribute(u"name") == u"GetAll":
699
for arg in cn.getElementsByTagName(u"arg"):
700
if (arg.getAttribute(u"direction")
701
== u"out"):
702
arg.setAttribute(u"name", u"props")
703
xmlstring = document.toxml(u"utf-8")
1023
if (if_tag.getAttribute("name")
1024
== "org.freedesktop.DBus.Properties"):
1025
for cn in if_tag.getElementsByTagName("method"):
1026
if cn.getAttribute("name") == "Get":
1027
for arg in cn.getElementsByTagName("arg"):
1028
if (arg.getAttribute("direction")
1029
== "out"):
1030
arg.setAttribute("name", "value")
1031
elif cn.getAttribute("name") == "GetAll":
1032
for arg in cn.getElementsByTagName("arg"):
1033
if (arg.getAttribute("direction")
1034
== "out"):
1035
arg.setAttribute("name", "props")
1036
xmlstring = document.toxml("utf-8")
704
1037
document.unlink()
705
1038
except (AttributeError, xml.dom.DOMException,
706
xml.parsers.expat.ExpatError), error:
707
logger.error(u"Failed to override Introspection method",
708
error)
1039
xml.parsers.expat.ExpatError) as error:
1040
logger.error("Failed to override Introspection method",
1041
exc_info=error)
709
1042
return xmlstring
710
1043
711
1044
1045
def datetime_to_dbus(dt, variant_level=0):
1046
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1047
if dt is None:
1048
return dbus.String("", variant_level = variant_level)
1049
return dbus.String(dt.isoformat(),
1050
variant_level=variant_level)
1051
1052
1053
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1054
"""A class decorator; applied to a subclass of
1055
dbus.service.Object, it will add alternate D-Bus attributes with
1056
interface names according to the "alt_interface_names" mapping.
1057
Usage:
1058
1059
@alternate_dbus_interfaces({"org.example.Interface":
1060
"net.example.AlternateInterface"})
1061
class SampleDBusObject(dbus.service.Object):
1062
@dbus.service.method("org.example.Interface")
1063
def SampleDBusMethod():
1064
pass
1065
1066
The above "SampleDBusMethod" on "SampleDBusObject" will be
1067
reachable via two interfaces: "org.example.Interface" and
1068
"net.example.AlternateInterface", the latter of which will have
1069
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1070
"true", unless "deprecate" is passed with a False value.
1071
1072
This works for methods and signals, and also for D-Bus properties
1073
(from DBusObjectWithProperties) and interfaces (from the
1074
dbus_interface_annotations decorator).
1075
"""
1076
def wrapper(cls):
1077
for orig_interface_name, alt_interface_name in (
1078
alt_interface_names.items()):
1079
attr = {}
1080
interface_names = set()
1081
# Go though all attributes of the class
1082
for attrname, attribute in inspect.getmembers(cls):
1083
# Ignore non-D-Bus attributes, and D-Bus attributes
1084
# with the wrong interface name
1085
if (not hasattr(attribute, "_dbus_interface")
1086
or not attribute._dbus_interface
1087
.startswith(orig_interface_name)):
1088
continue
1089
# Create an alternate D-Bus interface name based on
1090
# the current name
1091
alt_interface = (attribute._dbus_interface
1092
.replace(orig_interface_name,
1093
alt_interface_name))
1094
interface_names.add(alt_interface)
1095
# Is this a D-Bus signal?
1096
if getattr(attribute, "_dbus_is_signal", False):
1097
# Extract the original non-method undecorated
1098
# function by black magic
1099
nonmethod_func = (dict(
1100
zip(attribute.func_code.co_freevars,
1101
attribute.__closure__))["func"]
1102
.cell_contents)
1103
# Create a new, but exactly alike, function
1104
# object, and decorate it to be a new D-Bus signal
1105
# with the alternate D-Bus interface name
1106
new_function = (dbus.service.signal
1107
(alt_interface,
1108
attribute._dbus_signature)
1109
(types.FunctionType(
1110
nonmethod_func.func_code,
1111
nonmethod_func.func_globals,
1112
nonmethod_func.func_name,
1113
nonmethod_func.func_defaults,
1114
nonmethod_func.func_closure)))
1115
# Copy annotations, if any
1116
try:
1117
new_function._dbus_annotations = (
1118
dict(attribute._dbus_annotations))
1119
except AttributeError:
1120
pass
1121
# Define a creator of a function to call both the
1122
# original and alternate functions, so both the
1123
# original and alternate signals gets sent when
1124
# the function is called
1125
def fixscope(func1, func2):
1126
"""This function is a scope container to pass
1127
func1 and func2 to the "call_both" function
1128
outside of its arguments"""
1129
def call_both(*args, **kwargs):
1130
"""This function will emit two D-Bus
1131
signals by calling func1 and func2"""
1132
func1(*args, **kwargs)
1133
func2(*args, **kwargs)
1134
return call_both
1135
# Create the "call_both" function and add it to
1136
# the class
1137
attr[attrname] = fixscope(attribute, new_function)
1138
# Is this a D-Bus method?
1139
elif getattr(attribute, "_dbus_is_method", False):
1140
# Create a new, but exactly alike, function
1141
# object. Decorate it to be a new D-Bus method
1142
# with the alternate D-Bus interface name. Add it
1143
# to the class.
1144
attr[attrname] = (dbus.service.method
1145
(alt_interface,
1146
attribute._dbus_in_signature,
1147
attribute._dbus_out_signature)
1148
(types.FunctionType
1149
(attribute.func_code,
1150
attribute.func_globals,
1151
attribute.func_name,
1152
attribute.func_defaults,
1153
attribute.func_closure)))
1154
# Copy annotations, if any
1155
try:
1156
attr[attrname]._dbus_annotations = (
1157
dict(attribute._dbus_annotations))
1158
except AttributeError:
1159
pass
1160
# Is this a D-Bus property?
1161
elif getattr(attribute, "_dbus_is_property", False):
1162
# Create a new, but exactly alike, function
1163
# object, and decorate it to be a new D-Bus
1164
# property with the alternate D-Bus interface
1165
# name. Add it to the class.
1166
attr[attrname] = (dbus_service_property
1167
(alt_interface,
1168
attribute._dbus_signature,
1169
attribute._dbus_access,
1170
attribute
1171
._dbus_get_args_options
1172
["byte_arrays"])
1173
(types.FunctionType
1174
(attribute.func_code,
1175
attribute.func_globals,
1176
attribute.func_name,
1177
attribute.func_defaults,
1178
attribute.func_closure)))
1179
# Copy annotations, if any
1180
try:
1181
attr[attrname]._dbus_annotations = (
1182
dict(attribute._dbus_annotations))
1183
except AttributeError:
1184
pass
1185
# Is this a D-Bus interface?
1186
elif getattr(attribute, "_dbus_is_interface", False):
1187
# Create a new, but exactly alike, function
1188
# object. Decorate it to be a new D-Bus interface
1189
# with the alternate D-Bus interface name. Add it
1190
# to the class.
1191
attr[attrname] = (dbus_interface_annotations
1192
(alt_interface)
1193
(types.FunctionType
1194
(attribute.func_code,
1195
attribute.func_globals,
1196
attribute.func_name,
1197
attribute.func_defaults,
1198
attribute.func_closure)))
1199
if deprecate:
1200
# Deprecate all alternate interfaces
1201
iname="_AlternateDBusNames_interface_annotation{}"
1202
for interface_name in interface_names:
1203
@dbus_interface_annotations(interface_name)
1204
def func(self):
1205
return { "org.freedesktop.DBus.Deprecated":
1206
"true" }
1207
# Find an unused name
1208
for aname in (iname.format(i)
1209
for i in itertools.count()):
1210
if aname not in attr:
1211
attr[aname] = func
1212
break
1213
if interface_names:
1214
# Replace the class with a new subclass of it with
1215
# methods, signals, etc. as created above.
1216
cls = type(b"{}Alternate".format(cls.__name__),
1217
(cls,), attr)
1218
return cls
1219
return wrapper
1220
1221
1222
@alternate_dbus_interfaces({"se.recompile.Mandos":
1223
"se.bsnet.fukt.Mandos"})
712
1224
class ClientDBus(Client, DBusObjectWithProperties):
713
1225
"""A Client class using D-Bus
714
1226
718
1230
"""
719
1231
720
1232
runtime_expansions = (Client.runtime_expansions
721
+ (u"dbus_object_path",))
1233
+ ("dbus_object_path",))
1234
1235
_interface = "se.recompile.Mandos.Client"
722
1236
723
1237
# dbus.service.Object doesn't use super(), so we can't either.
724
1238
725
1239
def __init__(self, bus = None, *args, **kwargs):
726
self._approvals_pending = 0
727
1240
self.bus = bus
728
1241
Client.__init__(self, *args, **kwargs)
729
1242
# Only now, when this client is initialized, can it show up on
730
1243
# the D-Bus
731
client_object_name = unicode(self.name).translate(
732
{ord(u"."): ord(u"_"),
733
ord(u"-"): ord(u"_")})
1244
client_object_name = str(self.name).translate(
1245
{ord("."): ord("_"),
1246
ord("-"): ord("_")})
734
1247
self.dbus_object_path = (dbus.ObjectPath
735
(u"/clients/" + client_object_name))
1248
("/clients/" + client_object_name))
736
1249
DBusObjectWithProperties.__init__(self, self.bus,
737
1250
self.dbus_object_path)
738
739
def _get_approvals_pending(self):
740
return self._approvals_pending
741
def _set_approvals_pending(self, value):
742
old_value = self._approvals_pending
743
self._approvals_pending = value
744
bval = bool(value)
745
if (hasattr(self, "dbus_object_path")
746
and bval is not bool(old_value)):
747
dbus_bool = dbus.Boolean(bval, variant_level=1)
748
self.PropertyChanged(dbus.String(u"ApprovalPending"),
749
dbus_bool)
750
751
approvals_pending = property(_get_approvals_pending,
752
_set_approvals_pending)
753
del _get_approvals_pending, _set_approvals_pending
754
755
@staticmethod
756
def _datetime_to_dbus(dt, variant_level=0):
757
"""Convert a UTC datetime.datetime() to a D-Bus type."""
758
return dbus.String(dt.isoformat(),
759
variant_level=variant_level)
760
761
def enable(self):
762
oldstate = getattr(self, u"enabled", False)
763
r = Client.enable(self)
764
if oldstate != self.enabled:
765
# Emit D-Bus signals
766
self.PropertyChanged(dbus.String(u"Enabled"),
767
dbus.Boolean(True, variant_level=1))
768
self.PropertyChanged(
769
dbus.String(u"LastEnabled"),
770
self._datetime_to_dbus(self.last_enabled,
771
variant_level=1))
772
return r
773
774
def disable(self, quiet = False):
775
oldstate = getattr(self, u"enabled", False)
776
r = Client.disable(self, quiet=quiet)
777
if not quiet and oldstate != self.enabled:
778
# Emit D-Bus signal
779
self.PropertyChanged(dbus.String(u"Enabled"),
780
dbus.Boolean(False, variant_level=1))
781
return r
1251
1252
def notifychangeproperty(transform_func,
1253
dbus_name, type_func=lambda x: x,
1254
variant_level=1, invalidate_only=False,
1255
_interface=_interface):
1256
""" Modify a variable so that it's a property which announces
1257
its changes to DBus.
1258
1259
transform_fun: Function that takes a value and a variant_level
1260
and transforms it to a D-Bus type.
1261
dbus_name: D-Bus name of the variable
1262
type_func: Function that transform the value before sending it
1263
to the D-Bus. Default: no transform
1264
variant_level: D-Bus variant level. Default: 1
1265
"""
1266
attrname = "_{}".format(dbus_name)
1267
def setter(self, value):
1268
if hasattr(self, "dbus_object_path"):
1269
if (not hasattr(self, attrname) or
1270
type_func(getattr(self, attrname, None))
1271
!= type_func(value)):
1272
if invalidate_only:
1273
self.PropertiesChanged(_interface,
1274
dbus.Dictionary(),
1275
dbus.Array
1276
((dbus_name,)))
1277
else:
1278
dbus_value = transform_func(type_func(value),
1279
variant_level
1280
=variant_level)
1281
self.PropertyChanged(dbus.String(dbus_name),
1282
dbus_value)
1283
self.PropertiesChanged(_interface,
1284
dbus.Dictionary({
1285
dbus.String(dbus_name):
1286
dbus_value }), dbus.Array())
1287
setattr(self, attrname, value)
1288
1289
return property(lambda self: getattr(self, attrname), setter)
1290
1291
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1292
approvals_pending = notifychangeproperty(dbus.Boolean,
1293
"ApprovalPending",
1294
type_func = bool)
1295
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1296
last_enabled = notifychangeproperty(datetime_to_dbus,
1297
"LastEnabled")
1298
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1299
type_func = lambda checker:
1300
checker is not None)
1301
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1302
"LastCheckedOK")
1303
last_checker_status = notifychangeproperty(dbus.Int16,
1304
"LastCheckerStatus")
1305
last_approval_request = notifychangeproperty(
1306
datetime_to_dbus, "LastApprovalRequest")
1307
approved_by_default = notifychangeproperty(dbus.Boolean,
1308
"ApprovedByDefault")
1309
approval_delay = notifychangeproperty(dbus.UInt64,
1310
"ApprovalDelay",
1311
type_func =
1312
lambda td: td.total_seconds()
1313
* 1000)
1314
approval_duration = notifychangeproperty(
1315
dbus.UInt64, "ApprovalDuration",
1316
type_func = lambda td: td.total_seconds() * 1000)
1317
host = notifychangeproperty(dbus.String, "Host")
1318
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1319
type_func = lambda td:
1320
td.total_seconds() * 1000)
1321
extended_timeout = notifychangeproperty(
1322
dbus.UInt64, "ExtendedTimeout",
1323
type_func = lambda td: td.total_seconds() * 1000)
1324
interval = notifychangeproperty(dbus.UInt64,
1325
"Interval",
1326
type_func =
1327
lambda td: td.total_seconds()
1328
* 1000)
1329
checker_command = notifychangeproperty(dbus.String, "Checker")
1330
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1331
invalidate_only=True)
1332
1333
del notifychangeproperty
782
1334
783
1335
def __del__(self, *args, **kwargs):
784
1336
try:
785
1337
self.remove_from_connection()
786
1338
except LookupError:
787
1339
pass
788
if hasattr(DBusObjectWithProperties, u"__del__"):
1340
if hasattr(DBusObjectWithProperties, "__del__"):
789
1341
DBusObjectWithProperties.__del__(self, *args, **kwargs)
790
1342
Client.__del__(self, *args, **kwargs)
791
1343
793
1345
*args, **kwargs):
794
1346
self.checker_callback_tag = None
795
1347
self.checker = None
796
# Emit D-Bus signal
797
self.PropertyChanged(dbus.String(u"CheckerRunning"),
798
dbus.Boolean(False, variant_level=1))
799
1348
if os.WIFEXITED(condition):
800
1349
exitstatus = os.WEXITSTATUS(condition)
801
1350
# Emit D-Bus signal
811
1360
return Client.checker_callback(self, pid, condition, command,
812
1361
*args, **kwargs)
813
1362
814
def checked_ok(self, *args, **kwargs):
815
r = Client.checked_ok(self, *args, **kwargs)
816
# Emit D-Bus signal
817
self.PropertyChanged(
818
dbus.String(u"LastCheckedOK"),
819
(self._datetime_to_dbus(self.last_checked_ok,
820
variant_level=1)))
821
return r
822
823
def need_approval(self, *args, **kwargs):
824
r = Client.need_approval(self, *args, **kwargs)
825
# Emit D-Bus signal
826
self.PropertyChanged(
827
dbus.String(u"LastApprovalRequest"),
828
(self._datetime_to_dbus(self.last_approval_request,
829
variant_level=1)))
830
return r
831
832
1363
def start_checker(self, *args, **kwargs):
833
old_checker = self.checker
834
if self.checker is not None:
835
old_checker_pid = self.checker.pid
836
else:
837
old_checker_pid = None
1364
old_checker_pid = getattr(self.checker, "pid", None)
838
1365
r = Client.start_checker(self, *args, **kwargs)
839
1366
# Only if new checker process was started
840
1367
if (self.checker is not None
841
1368
and old_checker_pid != self.checker.pid):
842
1369
# Emit D-Bus signal
843
1370
self.CheckerStarted(self.current_checker_command)
844
self.PropertyChanged(
845
dbus.String(u"CheckerRunning"),
846
dbus.Boolean(True, variant_level=1))
847
1371
return r
848
1372
849
def stop_checker(self, *args, **kwargs):
850
old_checker = getattr(self, u"checker", None)
851
r = Client.stop_checker(self, *args, **kwargs)
852
if (old_checker is not None
853
and getattr(self, u"checker", None) is None):
854
self.PropertyChanged(dbus.String(u"CheckerRunning"),
855
dbus.Boolean(False, variant_level=1))
856
return r
857
858
1373
def _reset_approved(self):
859
self._approved = None
1374
self.approved = None
860
1375
return False
861
1376
862
1377
def approve(self, value=True):
1378
self.approved = value
1379
gobject.timeout_add(int(self.approval_duration.total_seconds()
1380
* 1000), self._reset_approved)
863
1381
self.send_changedstate()
864
self._approved = value
865
gobject.timeout_add(self._timedelta_to_milliseconds
866
(self.approval_duration),
867
self._reset_approved)
868
869
1382
870
1383
## D-Bus methods, signals & properties
871
_interface = u"se.bsnet.fukt.Mandos.Client"
1384
1385
## Interfaces
872
1386
873
1387
## Signals
874
1388
875
1389
# CheckerCompleted - signal
876
@dbus.service.signal(_interface, signature=u"nxs")
1390
@dbus.service.signal(_interface, signature="nxs")
877
1391
def CheckerCompleted(self, exitcode, waitstatus, command):
878
1392
"D-Bus signal"
879
1393
pass
880
1394
881
1395
# CheckerStarted - signal
882
@dbus.service.signal(_interface, signature=u"s")
1396
@dbus.service.signal(_interface, signature="s")
883
1397
def CheckerStarted(self, command):
884
1398
"D-Bus signal"
885
1399
pass
886
1400
887
1401
# PropertyChanged - signal
888
@dbus.service.signal(_interface, signature=u"sv")
1402
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1403
@dbus.service.signal(_interface, signature="sv")
889
1404
def PropertyChanged(self, property, value):
890
1405
"D-Bus signal"
891
1406
pass
900
1415
pass
901
1416
902
1417
# Rejected - signal
903
@dbus.service.signal(_interface, signature=u"s")
1418
@dbus.service.signal(_interface, signature="s")
904
1419
def Rejected(self, reason):
905
1420
"D-Bus signal"
906
1421
pass
907
1422
908
1423
# NeedApproval - signal
909
@dbus.service.signal(_interface, signature=u"tb")
1424
@dbus.service.signal(_interface, signature="tb")
910
1425
def NeedApproval(self, timeout, default):
911
1426
"D-Bus signal"
912
1427
return self.need_approval()
914
1429
## Methods
915
1430
916
1431
# Approve - method
917
@dbus.service.method(_interface, in_signature=u"b")
1432
@dbus.service.method(_interface, in_signature="b")
918
1433
def Approve(self, value):
919
1434
self.approve(value)
920
1435
921
1436
# CheckedOK - method
922
1437
@dbus.service.method(_interface)
923
1438
def CheckedOK(self):
924
return self.checked_ok()
1439
self.checked_ok()
925
1440
926
1441
# Enable - method
927
1442
@dbus.service.method(_interface)
949
1464
## Properties
950
1465
951
1466
# ApprovalPending - property
952
@dbus_service_property(_interface, signature=u"b", access=u"read")
1467
@dbus_service_property(_interface, signature="b", access="read")
953
1468
def ApprovalPending_dbus_property(self):
954
1469
return dbus.Boolean(bool(self.approvals_pending))
955
1470
956
1471
# ApprovedByDefault - property
957
@dbus_service_property(_interface, signature=u"b",
958
access=u"readwrite")
1472
@dbus_service_property(_interface, signature="b",
1473
access="readwrite")
959
1474
def ApprovedByDefault_dbus_property(self, value=None):
960
1475
if value is None: # get
961
1476
return dbus.Boolean(self.approved_by_default)
962
1477
self.approved_by_default = bool(value)
963
# Emit D-Bus signal
964
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
965
dbus.Boolean(value, variant_level=1))
966
1478
967
1479
# ApprovalDelay - property
968
@dbus_service_property(_interface, signature=u"t",
969
access=u"readwrite")
1480
@dbus_service_property(_interface, signature="t",
1481
access="readwrite")
970
1482
def ApprovalDelay_dbus_property(self, value=None):
971
1483
if value is None: # get
972
return dbus.UInt64(self.approval_delay_milliseconds())
1484
return dbus.UInt64(self.approval_delay.total_seconds()
1485
* 1000)
973
1486
self.approval_delay = datetime.timedelta(0, 0, 0, value)
974
# Emit D-Bus signal
975
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
976
dbus.UInt64(value, variant_level=1))
977
1487
978
1488
# ApprovalDuration - property
979
@dbus_service_property(_interface, signature=u"t",
980
access=u"readwrite")
1489
@dbus_service_property(_interface, signature="t",
1490
access="readwrite")
981
1491
def ApprovalDuration_dbus_property(self, value=None):
982
1492
if value is None: # get
983
return dbus.UInt64(self._timedelta_to_milliseconds(
984
self.approval_duration))
1493
return dbus.UInt64(self.approval_duration.total_seconds()
1494
* 1000)
985
1495
self.approval_duration = datetime.timedelta(0, 0, 0, value)
986
# Emit D-Bus signal
987
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
988
dbus.UInt64(value, variant_level=1))
989
1496
990
1497
# Name - property
991
@dbus_service_property(_interface, signature=u"s", access=u"read")
1498
@dbus_service_property(_interface, signature="s", access="read")
992
1499
def Name_dbus_property(self):
993
1500
return dbus.String(self.name)
994
1501
995
1502
# Fingerprint - property
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
1503
@dbus_service_property(_interface, signature="s", access="read")
997
1504
def Fingerprint_dbus_property(self):
998
1505
return dbus.String(self.fingerprint)
999
1506
1000
1507
# Host - property
1001
@dbus_service_property(_interface, signature=u"s",
1002
access=u"readwrite")
1508
@dbus_service_property(_interface, signature="s",
1509
access="readwrite")
1003
1510
def Host_dbus_property(self, value=None):
1004
1511
if value is None: # get
1005
1512
return dbus.String(self.host)
1006
self.host = value
1007
# Emit D-Bus signal
1008
self.PropertyChanged(dbus.String(u"Host"),
1009
dbus.String(value, variant_level=1))
1513
self.host = str(value)
1010
1514
1011
1515
# Created - property
1012
@dbus_service_property(_interface, signature=u"s", access=u"read")
1516
@dbus_service_property(_interface, signature="s", access="read")
1013
1517
def Created_dbus_property(self):
1014
return dbus.String(self._datetime_to_dbus(self.created))
1518
return datetime_to_dbus(self.created)
1015
1519
1016
1520
# LastEnabled - property
1017
@dbus_service_property(_interface, signature=u"s", access=u"read")
1521
@dbus_service_property(_interface, signature="s", access="read")
1018
1522
def LastEnabled_dbus_property(self):
1019
if self.last_enabled is None:
1020
return dbus.String(u"")
1021
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1523
return datetime_to_dbus(self.last_enabled)
1022
1524
1023
1525
# Enabled - property
1024
@dbus_service_property(_interface, signature=u"b",
1025
access=u"readwrite")
1526
@dbus_service_property(_interface, signature="b",
1527
access="readwrite")
1026
1528
def Enabled_dbus_property(self, value=None):
1027
1529
if value is None: # get
1028
1530
return dbus.Boolean(self.enabled)
1032
1534
self.disable()
1033
1535
1034
1536
# LastCheckedOK - property
1035
@dbus_service_property(_interface, signature=u"s",
1036
access=u"readwrite")
1537
@dbus_service_property(_interface, signature="s",
1538
access="readwrite")
1037
1539
def LastCheckedOK_dbus_property(self, value=None):
1038
1540
if value is not None:
1039
1541
self.checked_ok()
1040
1542
return
1041
if self.last_checked_ok is None:
1042
return dbus.String(u"")
1043
return dbus.String(self._datetime_to_dbus(self
1044
.last_checked_ok))
1543
return datetime_to_dbus(self.last_checked_ok)
1544
1545
# LastCheckerStatus - property
1546
@dbus_service_property(_interface, signature="n",
1547
access="read")
1548
def LastCheckerStatus_dbus_property(self):
1549
return dbus.Int16(self.last_checker_status)
1550
1551
# Expires - property
1552
@dbus_service_property(_interface, signature="s", access="read")
1553
def Expires_dbus_property(self):
1554
return datetime_to_dbus(self.expires)
1045
1555
1046
1556
# LastApprovalRequest - property
1047
@dbus_service_property(_interface, signature=u"s", access=u"read")
1557
@dbus_service_property(_interface, signature="s", access="read")
1048
1558
def LastApprovalRequest_dbus_property(self):
1049
if self.last_approval_request is None:
1050
return dbus.String(u"")
1051
return dbus.String(self.
1052
_datetime_to_dbus(self
1053
.last_approval_request))
1559
return datetime_to_dbus(self.last_approval_request)
1054
1560
1055
1561
# Timeout - property
1056
@dbus_service_property(_interface, signature=u"t",
1057
access=u"readwrite")
1562
@dbus_service_property(_interface, signature="t",
1563
access="readwrite")
1058
1564
def Timeout_dbus_property(self, value=None):
1059
1565
if value is None: # get
1060
return dbus.UInt64(self.timeout_milliseconds())
1566
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1567
old_timeout = self.timeout
1061
1568
self.timeout = datetime.timedelta(0, 0, 0, value)
1062
# Emit D-Bus signal
1063
self.PropertyChanged(dbus.String(u"Timeout"),
1064
dbus.UInt64(value, variant_level=1))
1065
if getattr(self, u"disable_initiator_tag", None) is None:
1066
return
1067
# Reschedule timeout
1068
gobject.source_remove(self.disable_initiator_tag)
1069
self.disable_initiator_tag = None
1070
time_to_die = (self.
1071
_timedelta_to_milliseconds((self
1072
.last_checked_ok
1073
+ self.timeout)
1074
- datetime.datetime
1075
.utcnow()))
1076
if time_to_die <= 0:
1077
# The timeout has passed
1078
self.disable()
1079
else:
1080
self.disable_initiator_tag = (gobject.timeout_add
1081
(time_to_die, self.disable))
1569
# Reschedule disabling
1570
if self.enabled:
1571
now = datetime.datetime.utcnow()
1572
self.expires += self.timeout - old_timeout
1573
if self.expires <= now:
1574
# The timeout has passed
1575
self.disable()
1576
else:
1577
if (getattr(self, "disable_initiator_tag", None)
1578
is None):
1579
return
1580
gobject.source_remove(self.disable_initiator_tag)
1581
self.disable_initiator_tag = (
1582
gobject.timeout_add(
1583
int((self.expires - now).total_seconds()
1584
* 1000), self.disable))
1585
1586
# ExtendedTimeout - property
1587
@dbus_service_property(_interface, signature="t",
1588
access="readwrite")
1589
def ExtendedTimeout_dbus_property(self, value=None):
1590
if value is None: # get
1591
return dbus.UInt64(self.extended_timeout.total_seconds()
1592
* 1000)
1593
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1082
1594
1083
1595
# Interval - property
1084
@dbus_service_property(_interface, signature=u"t",
1085
access=u"readwrite")
1596
@dbus_service_property(_interface, signature="t",
1597
access="readwrite")
1086
1598
def Interval_dbus_property(self, value=None):
1087
1599
if value is None: # get
1088
return dbus.UInt64(self.interval_milliseconds())
1600
return dbus.UInt64(self.interval.total_seconds() * 1000)
1089
1601
self.interval = datetime.timedelta(0, 0, 0, value)
1090
# Emit D-Bus signal
1091
self.PropertyChanged(dbus.String(u"Interval"),
1092
dbus.UInt64(value, variant_level=1))
1093
if getattr(self, u"checker_initiator_tag", None) is None:
1602
if getattr(self, "checker_initiator_tag", None) is None:
1094
1603
return
1095
# Reschedule checker run
1096
gobject.source_remove(self.checker_initiator_tag)
1097
self.checker_initiator_tag = (gobject.timeout_add
1098
(value, self.start_checker))
1099
self.start_checker() # Start one now, too
1100
1604
if self.enabled:
1605
# Reschedule checker run
1606
gobject.source_remove(self.checker_initiator_tag)
1607
self.checker_initiator_tag = (gobject.timeout_add
1608
(value, self.start_checker))
1609
self.start_checker() # Start one now, too
1610
1101
1611
# Checker - property
1102
@dbus_service_property(_interface, signature=u"s",
1103
access=u"readwrite")
1612
@dbus_service_property(_interface, signature="s",
1613
access="readwrite")
1104
1614
def Checker_dbus_property(self, value=None):
1105
1615
if value is None: # get
1106
1616
return dbus.String(self.checker_command)
1107
self.checker_command = value
1108
# Emit D-Bus signal
1109
self.PropertyChanged(dbus.String(u"Checker"),
1110
dbus.String(self.checker_command,
1111
variant_level=1))
1617
self.checker_command = str(value)
1112
1618
1113
1619
# CheckerRunning - property
1114
@dbus_service_property(_interface, signature=u"b",
1115
access=u"readwrite")
1620
@dbus_service_property(_interface, signature="b",
1621
access="readwrite")
1116
1622
def CheckerRunning_dbus_property(self, value=None):
1117
1623
if value is None: # get
1118
1624
return dbus.Boolean(self.checker is not None)
1122
1628
self.stop_checker()
1123
1629
1124
1630
# ObjectPath - property
1125
@dbus_service_property(_interface, signature=u"o", access=u"read")
1631
@dbus_service_property(_interface, signature="o", access="read")
1126
1632
def ObjectPath_dbus_property(self):
1127
1633
return self.dbus_object_path # is already a dbus.ObjectPath
1128
1634
1129
1635
# Secret = property
1130
@dbus_service_property(_interface, signature=u"ay",
1131
access=u"write", byte_arrays=True)
1636
@dbus_service_property(_interface, signature="ay",
1637
access="write", byte_arrays=True)
1132
1638
def Secret_dbus_property(self, value):
1133
self.secret = str(value)
1639
self.secret = bytes(value)
1134
1640
1135
1641
del _interface
1136
1642
1141
1647
self._pipe.send(('init', fpr, address))
1142
1648
if not self._pipe.recv():
1143
1649
raise KeyError()
1144
1650
1145
1651
def __getattribute__(self, name):
1146
if(name == '_pipe'):
1652
if name == '_pipe':
1147
1653
return super(ProxyClient, self).__getattribute__(name)
1148
1654
self._pipe.send(('getattr', name))
1149
1655
data = self._pipe.recv()
1154
1660
self._pipe.send(('funcall', name, args, kwargs))
1155
1661
return self._pipe.recv()[1]
1156
1662
return func
1157
1663
1158
1664
def __setattr__(self, name, value):
1159
if(name == '_pipe'):
1665
if name == '_pipe':
1160
1666
return super(ProxyClient, self).__setattr__(name, value)
1161
1667
self._pipe.send(('setattr', name, value))
1162
1668
1169
1675
1170
1676
def handle(self):
1171
1677
with contextlib.closing(self.server.child_pipe) as child_pipe:
1172
logger.info(u"TCP connection from: %s",
1173
unicode(self.client_address))
1174
logger.debug(u"Pipe FD: %d",
1678
logger.info("TCP connection from: %s",
1679
str(self.client_address))
1680
logger.debug("Pipe FD: %d",
1175
1681
self.server.child_pipe.fileno())
1176
1682
1177
1683
session = (gnutls.connection
1178
1684
.ClientSession(self.request,
1179
1685
gnutls.connection
1180
1686
.X509Credentials()))
1181
1687
1182
1688
# Note: gnutls.connection.X509Credentials is really a
1183
1689
# generic GnuTLS certificate credentials object so long as
1184
1690
# no X.509 keys are added to it. Therefore, we can use it
1185
1691
# here despite using OpenPGP certificates.
1186
1187
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1188
# u"+AES-256-CBC", u"+SHA1",
1189
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1190
# u"+DHE-DSS"))
1692
1693
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1694
# "+AES-256-CBC", "+SHA1",
1695
# "+COMP-NULL", "+CTYPE-OPENPGP",
1696
# "+DHE-DSS"))
1191
1697
# Use a fallback default, since this MUST be set.
1192
1698
priority = self.server.gnutls_priority
1193
1699
if priority is None:
1194
priority = u"NORMAL"
1700
priority = "NORMAL"
1195
1701
(gnutls.library.functions
1196
1702
.gnutls_priority_set_direct(session._c_object,
1197
1703
priority, None))
1198
1704
1199
1705
# Start communication using the Mandos protocol
1200
1706
# Get protocol number
1201
1707
line = self.request.makefile().readline()
1202
logger.debug(u"Protocol version: %r", line)
1708
logger.debug("Protocol version: %r", line)
1203
1709
try:
1204
1710
if int(line.strip().split()[0]) > 1:
1205
raise RuntimeError
1206
except (ValueError, IndexError, RuntimeError), error:
1207
logger.error(u"Unknown protocol version: %s", error)
1711
raise RuntimeError(line)
1712
except (ValueError, IndexError, RuntimeError) as error:
1713
logger.error("Unknown protocol version: %s", error)
1208
1714
return
1209
1715
1210
1716
# Start GnuTLS connection
1211
1717
try:
1212
1718
session.handshake()
1213
except gnutls.errors.GNUTLSError, error:
1214
logger.warning(u"Handshake failed: %s", error)
1719
except gnutls.errors.GNUTLSError as error:
1720
logger.warning("Handshake failed: %s", error)
1215
1721
# Do not run session.bye() here: the session is not
1216
1722
# established. Just abandon the request.
1217
1723
return
1218
logger.debug(u"Handshake succeeded")
1219
1724
logger.debug("Handshake succeeded")
1725
1220
1726
approval_required = False
1221
1727
try:
1222
1728
try:
1223
1729
fpr = self.fingerprint(self.peer_certificate
1224
1730
(session))
1225
except (TypeError, gnutls.errors.GNUTLSError), error:
1226
logger.warning(u"Bad certificate: %s", error)
1731
except (TypeError,
1732
gnutls.errors.GNUTLSError) as error:
1733
logger.warning("Bad certificate: %s", error)
1227
1734
return
1228
logger.debug(u"Fingerprint: %s", fpr)
1229
1735
logger.debug("Fingerprint: %s", fpr)
1736
1230
1737
try:
1231
1738
client = ProxyClient(child_pipe, fpr,
1232
1739
self.client_address)
1240
1747
1241
1748
while True:
1242
1749
if not client.enabled:
1243
logger.warning(u"Client %s is disabled",
1750
logger.info("Client %s is disabled",
1244
1751
client.name)
1245
1752
if self.server.use_dbus:
1246
1753
# Emit D-Bus signal
1247
client.Rejected("Disabled")
1754
client.Rejected("Disabled")
1248
1755
return
1249
1756
1250
if client._approved or not client.approval_delay:
1757
if client.approved or not client.approval_delay:
1251
1758
#We are approved or approval is disabled
1252
1759
break
1253
elif client._approved is None:
1254
logger.info(u"Client %s needs approval",
1760
elif client.approved is None:
1761
logger.info("Client %s needs approval",
1255
1762
client.name)
1256
1763
if self.server.use_dbus:
1257
1764
# Emit D-Bus signal
1258
1765
client.NeedApproval(
1259
client.approval_delay_milliseconds(),
1260
client.approved_by_default)
1766
client.approval_delay.total_seconds()
1767
* 1000, client.approved_by_default)
1261
1768
else:
1262
logger.warning(u"Client %s was not approved",
1769
logger.warning("Client %s was not approved",
1263
1770
client.name)
1264
1771
if self.server.use_dbus:
1265
1772
# Emit D-Bus signal
1267
1774
return
1268
1775
1269
1776
#wait until timeout or approved
1270
#x = float(client._timedelta_to_milliseconds(delay))
1271
1777
time = datetime.datetime.now()
1272
1778
client.changedstate.acquire()
1273
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1779
client.changedstate.wait(delay.total_seconds())
1274
1780
client.changedstate.release()
1275
1781
time2 = datetime.datetime.now()
1276
1782
if (time2 - time) >= delay:
1291
1797
while sent_size < len(client.secret):
1292
1798
try:
1293
1799
sent = session.send(client.secret[sent_size:])
1294
except (gnutls.errors.GNUTLSError), error:
1295
logger.warning("gnutls send failed")
1800
except gnutls.errors.GNUTLSError as error:
1801
logger.warning("gnutls send failed",
1802
exc_info=error)
1296
1803
return
1297
logger.debug(u"Sent: %d, remaining: %d",
1804
logger.debug("Sent: %d, remaining: %d",
1298
1805
sent, len(client.secret)
1299
1806
- (sent_size + sent))
1300
1807
sent_size += sent
1301
1302
logger.info(u"Sending secret to %s", client.name)
1303
# bump the timeout as if seen
1304
client.checked_ok()
1808
1809
logger.info("Sending secret to %s", client.name)
1810
# bump the timeout using extended_timeout
1811
client.bump_timeout(client.extended_timeout)
1305
1812
if self.server.use_dbus:
1306
1813
# Emit D-Bus signal
1307
1814
client.GotSecret()
1311
1818
client.approvals_pending -= 1
1312
1819
try:
1313
1820
session.bye()
1314
except (gnutls.errors.GNUTLSError), error:
1315
logger.warning("GnuTLS bye failed")
1821
except gnutls.errors.GNUTLSError as error:
1822
logger.warning("GnuTLS bye failed",
1823
exc_info=error)
1316
1824
1317
1825
@staticmethod
1318
1826
def peer_certificate(session):
1328
1836
.gnutls_certificate_get_peers
1329
1837
(session._c_object, ctypes.byref(list_size)))
1330
1838
if not bool(cert_list) and list_size.value != 0:
1331
raise gnutls.errors.GNUTLSError(u"error getting peer"
1332
u" certificate")
1839
raise gnutls.errors.GNUTLSError("error getting peer"
1840
" certificate")
1333
1841
if list_size.value == 0:
1334
1842
return None
1335
1843
cert = cert_list[0]
1361
1869
if crtverify.value != 0:
1362
1870
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1363
1871
raise (gnutls.errors.CertificateSecurityError
1364
(u"Verify failed"))
1872
("Verify failed"))
1365
1873
# New buffer for the fingerprint
1366
1874
buf = ctypes.create_string_buffer(20)
1367
1875
buf_len = ctypes.c_size_t()
1374
1882
# Convert the buffer to a Python bytestring
1375
1883
fpr = ctypes.string_at(buf, buf_len.value)
1376
1884
# Convert the bytestring to hexadecimal notation
1377
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1885
hex_fpr = binascii.hexlify(fpr).upper()
1378
1886
return hex_fpr
1379
1887
1380
1888
1383
1891
def sub_process_main(self, request, address):
1384
1892
try:
1385
1893
self.finish_request(request, address)
1386
except:
1894
except Exception:
1387
1895
self.handle_error(request, address)
1388
1896
self.close_request(request)
1389
1897
1390
1898
def process_request(self, request, address):
1391
1899
"""Start a new process to process the request."""
1392
multiprocessing.Process(target = self.sub_process_main,
1393
args = (request, address)).start()
1900
proc = multiprocessing.Process(target = self.sub_process_main,
1901
args = (request, address))
1902
proc.start()
1903
return proc
1904
1394
1905
1395
1906
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1396
1907
""" adds a pipe to the MixIn """
1400
1911
This function creates a new pipe in self.pipe
1401
1912
"""
1402
1913
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1403
1404
super(MultiprocessingMixInWithPipe,
1405
self).process_request(request, client_address)
1914
1915
proc = MultiprocessingMixIn.process_request(self, request,
1916
client_address)
1406
1917
self.child_pipe.close()
1407
self.add_pipe(parent_pipe)
1408
1409
def add_pipe(self, parent_pipe):
1918
self.add_pipe(parent_pipe, proc)
1919
1920
def add_pipe(self, parent_pipe, proc):
1410
1921
"""Dummy function; override as necessary"""
1411
pass
1922
raise NotImplementedError()
1923
1412
1924
1413
1925
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1414
1926
socketserver.TCPServer, object):
1420
1932
use_ipv6: Boolean; to use IPv6 or not
1421
1933
"""
1422
1934
def __init__(self, server_address, RequestHandlerClass,
1423
interface=None, use_ipv6=True):
1935
interface=None, use_ipv6=True, socketfd=None):
1936
"""If socketfd is set, use that file descriptor instead of
1937
creating a new one with socket.socket().
1938
"""
1424
1939
self.interface = interface
1425
1940
if use_ipv6:
1426
1941
self.address_family = socket.AF_INET6
1942
if socketfd is not None:
1943
# Save the file descriptor
1944
self.socketfd = socketfd
1945
# Save the original socket.socket() function
1946
self.socket_socket = socket.socket
1947
# To implement --socket, we monkey patch socket.socket.
1948
#
1949
# (When socketserver.TCPServer is a new-style class, we
1950
# could make self.socket into a property instead of monkey
1951
# patching socket.socket.)
1952
#
1953
# Create a one-time-only replacement for socket.socket()
1954
@functools.wraps(socket.socket)
1955
def socket_wrapper(*args, **kwargs):
1956
# Restore original function so subsequent calls are
1957
# not affected.
1958
socket.socket = self.socket_socket
1959
del self.socket_socket
1960
# This time only, return a new socket object from the
1961
# saved file descriptor.
1962
return socket.fromfd(self.socketfd, *args, **kwargs)
1963
# Replace socket.socket() function with wrapper
1964
socket.socket = socket_wrapper
1965
# The socketserver.TCPServer.__init__ will call
1966
# socket.socket(), which might be our replacement,
1967
# socket_wrapper(), if socketfd was set.
1427
1968
socketserver.TCPServer.__init__(self, server_address,
1428
1969
RequestHandlerClass)
1970
1429
1971
def server_bind(self):
1430
1972
"""This overrides the normal server_bind() function
1431
1973
to bind to an interface if one was specified, and also NOT to
1432
1974
bind to an address or port if they were not specified."""
1433
1975
if self.interface is not None:
1434
1976
if SO_BINDTODEVICE is None:
1435
logger.error(u"SO_BINDTODEVICE does not exist;"
1436
u" cannot bind to interface %s",
1977
logger.error("SO_BINDTODEVICE does not exist;"
1978
" cannot bind to interface %s",
1437
1979
self.interface)
1438
1980
else:
1439
1981
try:
1440
1982
self.socket.setsockopt(socket.SOL_SOCKET,
1441
1983
SO_BINDTODEVICE,
1442
str(self.interface
1443
+ u'\0'))
1444
except socket.error, error:
1445
if error[0] == errno.EPERM:
1446
logger.error(u"No permission to"
1447
u" bind to interface %s",
1448
self.interface)
1449
elif error[0] == errno.ENOPROTOOPT:
1450
logger.error(u"SO_BINDTODEVICE not available;"
1451
u" cannot bind to interface %s",
1452
self.interface)
1984
(self.interface + "\0")
1985
.encode("utf-8"))
1986
except socket.error as error:
1987
if error.errno == errno.EPERM:
1988
logger.error("No permission to bind to"
1989
" interface %s", self.interface)
1990
elif error.errno == errno.ENOPROTOOPT:
1991
logger.error("SO_BINDTODEVICE not available;"
1992
" cannot bind to interface %s",
1993
self.interface)
1994
elif error.errno == errno.ENODEV:
1995
logger.error("Interface %s does not exist,"
1996
" cannot bind", self.interface)
1453
1997
else:
1454
1998
raise
1455
1999
# Only bind(2) the socket if we really need to.
1456
2000
if self.server_address[0] or self.server_address[1]:
1457
2001
if not self.server_address[0]:
1458
2002
if self.address_family == socket.AF_INET6:
1459
any_address = u"::" # in6addr_any
2003
any_address = "::" # in6addr_any
1460
2004
else:
1461
any_address = socket.INADDR_ANY
2005
any_address = "0.0.0.0" # INADDR_ANY
1462
2006
self.server_address = (any_address,
1463
2007
self.server_address[1])
1464
2008
elif not self.server_address[1]:
1485
2029
"""
1486
2030
def __init__(self, server_address, RequestHandlerClass,
1487
2031
interface=None, use_ipv6=True, clients=None,
1488
gnutls_priority=None, use_dbus=True):
2032
gnutls_priority=None, use_dbus=True, socketfd=None):
1489
2033
self.enabled = False
1490
2034
self.clients = clients
1491
2035
if self.clients is None:
1492
self.clients = set()
2036
self.clients = {}
1493
2037
self.use_dbus = use_dbus
1494
2038
self.gnutls_priority = gnutls_priority
1495
2039
IPv6_TCPServer.__init__(self, server_address,
1496
2040
RequestHandlerClass,
1497
2041
interface = interface,
1498
use_ipv6 = use_ipv6)
2042
use_ipv6 = use_ipv6,
2043
socketfd = socketfd)
1499
2044
def server_activate(self):
1500
2045
if self.enabled:
1501
2046
return socketserver.TCPServer.server_activate(self)
2047
1502
2048
def enable(self):
1503
2049
self.enabled = True
1504
def add_pipe(self, parent_pipe):
2050
2051
def add_pipe(self, parent_pipe, proc):
1505
2052
# Call "handle_ipc" for both data and EOF events
1506
2053
gobject.io_add_watch(parent_pipe.fileno(),
1507
2054
gobject.IO_IN | gobject.IO_HUP,
1508
2055
functools.partial(self.handle_ipc,
1509
parent_pipe = parent_pipe))
1510
2056
parent_pipe =
2057
parent_pipe,
2058
proc = proc))
2059
1511
2060
def handle_ipc(self, source, condition, parent_pipe=None,
1512
client_object=None):
1513
condition_names = {
1514
gobject.IO_IN: u"IN", # There is data to read.
1515
gobject.IO_OUT: u"OUT", # Data can be written (without
1516
# blocking).
1517
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1518
gobject.IO_ERR: u"ERR", # Error condition.
1519
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1520
# broken, usually for pipes and
1521
# sockets).
1522
}
1523
conditions_string = ' | '.join(name
1524
for cond, name in
1525
condition_names.iteritems()
1526
if cond & condition)
1527
# error or the other end of multiprocessing.Pipe has closed
1528
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2061
proc = None, client_object=None):
2062
# error, or the other end of multiprocessing.Pipe has closed
2063
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2064
# Wait for other process to exit
2065
proc.join()
1529
2066
return False
1530
2067
1531
2068
# Read a request from the child
1536
2073
fpr = request[1]
1537
2074
address = request[2]
1538
2075
1539
for c in self.clients:
2076
for c in self.clients.itervalues():
1540
2077
if c.fingerprint == fpr:
1541
2078
client = c
1542
2079
break
1543
2080
else:
1544
logger.warning(u"Client not found for fingerprint: %s, ad"
1545
u"dress: %s", fpr, address)
2081
logger.info("Client not found for fingerprint: %s, ad"
2082
"dress: %s", fpr, address)
1546
2083
if self.use_dbus:
1547
2084
# Emit D-Bus signal
1548
mandos_dbus_service.ClientNotFound(fpr, address[0])
2085
mandos_dbus_service.ClientNotFound(fpr,
2086
address[0])
1549
2087
parent_pipe.send(False)
1550
2088
return False
1551
2089
1552
2090
gobject.io_add_watch(parent_pipe.fileno(),
1553
2091
gobject.IO_IN | gobject.IO_HUP,
1554
2092
functools.partial(self.handle_ipc,
1555
parent_pipe = parent_pipe,
1556
client_object = client))
2093
parent_pipe =
2094
parent_pipe,
2095
proc = proc,
2096
client_object =
2097
client))
1557
2098
parent_pipe.send(True)
1558
# remove the old hook in favor of the new above hook on same fileno
2099
# remove the old hook in favor of the new above hook on
2100
# same fileno
1559
2101
return False
1560
2102
if command == 'funcall':
1561
2103
funcname = request[1]
1562
2104
args = request[2]
1563
2105
kwargs = request[3]
1564
2106
1565
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1566
2107
parent_pipe.send(('data', getattr(client_object,
2108
funcname)(*args,
2109
**kwargs)))
2110
1567
2111
if command == 'getattr':
1568
2112
attrname = request[1]
1569
2113
if callable(client_object.__getattribute__(attrname)):
1570
2114
parent_pipe.send(('function',))
1571
2115
else:
1572
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2116
parent_pipe.send(('data', client_object
2117
.__getattribute__(attrname)))
1573
2118
1574
2119
if command == 'setattr':
1575
2120
attrname = request[1]
1576
2121
value = request[2]
1577
2122
setattr(client_object, attrname, value)
1578
2123
1579
2124
return True
1580
2125
1581
2126
2127
def rfc3339_duration_to_delta(duration):
2128
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2129
2130
>>> rfc3339_duration_to_delta("P7D")
2131
datetime.timedelta(7)
2132
>>> rfc3339_duration_to_delta("PT60S")
2133
datetime.timedelta(0, 60)
2134
>>> rfc3339_duration_to_delta("PT60M")
2135
datetime.timedelta(0, 3600)
2136
>>> rfc3339_duration_to_delta("PT24H")
2137
datetime.timedelta(1)
2138
>>> rfc3339_duration_to_delta("P1W")
2139
datetime.timedelta(7)
2140
>>> rfc3339_duration_to_delta("PT5M30S")
2141
datetime.timedelta(0, 330)
2142
>>> rfc3339_duration_to_delta("P1DT3M20S")
2143
datetime.timedelta(1, 200)
2144
"""
2145
2146
# Parsing an RFC 3339 duration with regular expressions is not
2147
# possible - there would have to be multiple places for the same
2148
# values, like seconds. The current code, while more esoteric, is
2149
# cleaner without depending on a parsing library. If Python had a
2150
# built-in library for parsing we would use it, but we'd like to
2151
# avoid excessive use of external libraries.
2152
2153
# New type for defining tokens, syntax, and semantics all-in-one
2154
Token = collections.namedtuple("Token",
2155
("regexp", # To match token; if
2156
# "value" is not None,
2157
# must have a "group"
2158
# containing digits
2159
"value", # datetime.timedelta or
2160
# None
2161
"followers")) # Tokens valid after
2162
# this token
2163
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2164
# the "duration" ABNF definition in RFC 3339, Appendix A.
2165
token_end = Token(re.compile(r"$"), None, frozenset())
2166
token_second = Token(re.compile(r"(\d+)S"),
2167
datetime.timedelta(seconds=1),
2168
frozenset((token_end,)))
2169
token_minute = Token(re.compile(r"(\d+)M"),
2170
datetime.timedelta(minutes=1),
2171
frozenset((token_second, token_end)))
2172
token_hour = Token(re.compile(r"(\d+)H"),
2173
datetime.timedelta(hours=1),
2174
frozenset((token_minute, token_end)))
2175
token_time = Token(re.compile(r"T"),
2176
None,
2177
frozenset((token_hour, token_minute,
2178
token_second)))
2179
token_day = Token(re.compile(r"(\d+)D"),
2180
datetime.timedelta(days=1),
2181
frozenset((token_time, token_end)))
2182
token_month = Token(re.compile(r"(\d+)M"),
2183
datetime.timedelta(weeks=4),
2184
frozenset((token_day, token_end)))
2185
token_year = Token(re.compile(r"(\d+)Y"),
2186
datetime.timedelta(weeks=52),
2187
frozenset((token_month, token_end)))
2188
token_week = Token(re.compile(r"(\d+)W"),
2189
datetime.timedelta(weeks=1),
2190
frozenset((token_end,)))
2191
token_duration = Token(re.compile(r"P"), None,
2192
frozenset((token_year, token_month,
2193
token_day, token_time,
2194
token_week)))
2195
# Define starting values
2196
value = datetime.timedelta() # Value so far
2197
found_token = None
2198
followers = frozenset((token_duration,)) # Following valid tokens
2199
s = duration # String left to parse
2200
# Loop until end token is found
2201
while found_token is not token_end:
2202
# Search for any currently valid tokens
2203
for token in followers:
2204
match = token.regexp.match(s)
2205
if match is not None:
2206
# Token found
2207
if token.value is not None:
2208
# Value found, parse digits
2209
factor = int(match.group(1), 10)
2210
# Add to value so far
2211
value += factor * token.value
2212
# Strip token from string
2213
s = token.regexp.sub("", s, 1)
2214
# Go to found token
2215
found_token = token
2216
# Set valid next tokens
2217
followers = found_token.followers
2218
break
2219
else:
2220
# No currently valid tokens were found
2221
raise ValueError("Invalid RFC 3339 duration")
2222
# End token found
2223
return value
2224
2225
1582
2226
def string_to_delta(interval):
1583
2227
"""Parse a string and return a datetime.timedelta
1584
2228
1585
>>> string_to_delta(u'7d')
2229
>>> string_to_delta('7d')
1586
2230
datetime.timedelta(7)
1587
>>> string_to_delta(u'60s')
2231
>>> string_to_delta('60s')
1588
2232
datetime.timedelta(0, 60)
1589
>>> string_to_delta(u'60m')
2233
>>> string_to_delta('60m')
1590
2234
datetime.timedelta(0, 3600)
1591
>>> string_to_delta(u'24h')
2235
>>> string_to_delta('24h')
1592
2236
datetime.timedelta(1)
1593
>>> string_to_delta(u'1w')
2237
>>> string_to_delta('1w')
1594
2238
datetime.timedelta(7)
1595
>>> string_to_delta(u'5m 30s')
2239
>>> string_to_delta('5m 30s')
1596
2240
datetime.timedelta(0, 330)
1597
2241
"""
2242
2243
try:
2244
return rfc3339_duration_to_delta(interval)
2245
except ValueError:
2246
pass
2247
1598
2248
timevalue = datetime.timedelta(0)
1599
2249
for s in interval.split():
1600
2250
try:
1601
suffix = unicode(s[-1])
2251
suffix = s[-1]
1602
2252
value = int(s[:-1])
1603
if suffix == u"d":
2253
if suffix == "d":
1604
2254
delta = datetime.timedelta(value)
1605
elif suffix == u"s":
2255
elif suffix == "s":
1606
2256
delta = datetime.timedelta(0, value)
1607
elif suffix == u"m":
2257
elif suffix == "m":
1608
2258
delta = datetime.timedelta(0, 0, 0, 0, value)
1609
elif suffix == u"h":
2259
elif suffix == "h":
1610
2260
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1611
elif suffix == u"w":
2261
elif suffix == "w":
1612
2262
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1613
2263
else:
1614
raise ValueError(u"Unknown suffix %r" % suffix)
1615
except (ValueError, IndexError), e:
1616
raise ValueError(e.message)
2264
raise ValueError("Unknown suffix {!r}"
2265
.format(suffix))
2266
except IndexError as e:
2267
raise ValueError(*(e.args))
1617
2268
timevalue += delta
1618
2269
return timevalue
1619
2270
1620
2271
1621
def if_nametoindex(interface):
1622
"""Call the C function if_nametoindex(), or equivalent
1623
1624
Note: This function cannot accept a unicode string."""
1625
global if_nametoindex
1626
try:
1627
if_nametoindex = (ctypes.cdll.LoadLibrary
1628
(ctypes.util.find_library(u"c"))
1629
.if_nametoindex)
1630
except (OSError, AttributeError):
1631
logger.warning(u"Doing if_nametoindex the hard way")
1632
def if_nametoindex(interface):
1633
"Get an interface index the hard way, i.e. using fcntl()"
1634
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1635
with contextlib.closing(socket.socket()) as s:
1636
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1637
struct.pack(str(u"16s16x"),
1638
interface))
1639
interface_index = struct.unpack(str(u"I"),
1640
ifreq[16:20])[0]
1641
return interface_index
1642
return if_nametoindex(interface)
1643
1644
1645
2272
def daemon(nochdir = False, noclose = False):
1646
2273
"""See daemon(3). Standard BSD Unix function.
1647
2274
1650
2277
sys.exit()
1651
2278
os.setsid()
1652
2279
if not nochdir:
1653
os.chdir(u"/")
2280
os.chdir("/")
1654
2281
if os.fork():
1655
2282
sys.exit()
1656
2283
if not noclose:
1657
2284
# Close all standard open file descriptors
1658
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2285
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1659
2286
if not stat.S_ISCHR(os.fstat(null).st_mode):
1660
raise OSError(errno.ENODEV,
1661
u"%s not a character device"
1662
% os.path.devnull)
2287
raise OSError(errno.ENODEV, "{} not a character device"
2288
.format(os.devnull))
1663
2289
os.dup2(null, sys.stdin.fileno())
1664
2290
os.dup2(null, sys.stdout.fileno())
1665
2291
os.dup2(null, sys.stderr.fileno())
1672
2298
##################################################################
1673
2299
# Parsing of options, both command line and config file
1674
2300
1675
parser = optparse.OptionParser(version = "%%prog %s" % version)
1676
parser.add_option("-i", u"--interface", type=u"string",
1677
metavar="IF", help=u"Bind to interface IF")
1678
parser.add_option("-a", u"--address", type=u"string",
1679
help=u"Address to listen for requests on")
1680
parser.add_option("-p", u"--port", type=u"int",
1681
help=u"Port number to receive requests on")
1682
parser.add_option("--check", action=u"store_true",
1683
help=u"Run self-test")
1684
parser.add_option("--debug", action=u"store_true",
1685
help=u"Debug mode; run in foreground and log to"
1686
u" terminal")
1687
parser.add_option("--debuglevel", type=u"string", metavar="LEVEL",
1688
help=u"Debug level for stdout output")
1689
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1690
u" priority string (see GnuTLS documentation)")
1691
parser.add_option("--servicename", type=u"string",
1692
metavar=u"NAME", help=u"Zeroconf service name")
1693
parser.add_option("--configdir", type=u"string",
1694
default=u"/etc/mandos", metavar=u"DIR",
1695
help=u"Directory to search for configuration"
1696
u" files")
1697
parser.add_option("--no-dbus", action=u"store_false",
1698
dest=u"use_dbus", help=u"Do not provide D-Bus"
1699
u" system bus interface")
1700
parser.add_option("--no-ipv6", action=u"store_false",
1701
dest=u"use_ipv6", help=u"Do not use IPv6")
1702
options = parser.parse_args()[0]
2301
parser = argparse.ArgumentParser()
2302
parser.add_argument("-v", "--version", action="version",
2303
version = "%(prog)s {}".format(version),
2304
help="show version number and exit")
2305
parser.add_argument("-i", "--interface", metavar="IF",
2306
help="Bind to interface IF")
2307
parser.add_argument("-a", "--address",
2308
help="Address to listen for requests on")
2309
parser.add_argument("-p", "--port", type=int,
2310
help="Port number to receive requests on")
2311
parser.add_argument("--check", action="store_true",
2312
help="Run self-test")
2313
parser.add_argument("--debug", action="store_true",
2314
help="Debug mode; run in foreground and log"
2315
" to terminal", default=None)
2316
parser.add_argument("--debuglevel", metavar="LEVEL",
2317
help="Debug level for stdout output")
2318
parser.add_argument("--priority", help="GnuTLS"
2319
" priority string (see GnuTLS documentation)")
2320
parser.add_argument("--servicename",
2321
metavar="NAME", help="Zeroconf service name")
2322
parser.add_argument("--configdir",
2323
default="/etc/mandos", metavar="DIR",
2324
help="Directory to search for configuration"
2325
" files")
2326
parser.add_argument("--no-dbus", action="store_false",
2327
dest="use_dbus", help="Do not provide D-Bus"
2328
" system bus interface", default=None)
2329
parser.add_argument("--no-ipv6", action="store_false",
2330
dest="use_ipv6", help="Do not use IPv6",
2331
default=None)
2332
parser.add_argument("--no-restore", action="store_false",
2333
dest="restore", help="Do not restore stored"
2334
" state", default=None)
2335
parser.add_argument("--socket", type=int,
2336
help="Specify a file descriptor to a network"
2337
" socket to use instead of creating one")
2338
parser.add_argument("--statedir", metavar="DIR",
2339
help="Directory to save/restore state in")
2340
parser.add_argument("--foreground", action="store_true",
2341
help="Run in foreground", default=None)
2342
parser.add_argument("--no-zeroconf", action="store_false",
2343
dest="zeroconf", help="Do not use Zeroconf",
2344
default=None)
2345
2346
options = parser.parse_args()
1703
2347
1704
2348
if options.check:
1705
2349
import doctest
1706
doctest.testmod()
1707
sys.exit()
2350
fail_count, test_count = doctest.testmod()
2351
sys.exit(os.EX_OK if fail_count == 0 else 1)
1708
2352
1709
2353
# Default values for config file for server-global settings
1710
server_defaults = { u"interface": u"",
1711
u"address": u"",
1712
u"port": u"",
1713
u"debug": u"False",
1714
u"priority":
1715
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1716
u"servicename": u"Mandos",
1717
u"use_dbus": u"True",
1718
u"use_ipv6": u"True",
1719
u"debuglevel": u"",
2354
server_defaults = { "interface": "",
2355
"address": "",
2356
"port": "",
2357
"debug": "False",
2358
"priority":
2359
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2360
"servicename": "Mandos",
2361
"use_dbus": "True",
2362
"use_ipv6": "True",
2363
"debuglevel": "",
2364
"restore": "True",
2365
"socket": "",
2366
"statedir": "/var/lib/mandos",
2367
"foreground": "False",
2368
"zeroconf": "True",
1720
2369
}
1721
2370
1722
2371
# Parse config file for server-global settings
1723
2372
server_config = configparser.SafeConfigParser(server_defaults)
1724
2373
del server_defaults
1725
2374
server_config.read(os.path.join(options.configdir,
1726
u"mandos.conf"))
2375
"mandos.conf"))
1727
2376
# Convert the SafeConfigParser object to a dict
1728
2377
server_settings = server_config.defaults()
1729
2378
# Use the appropriate methods on the non-string config options
1730
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1731
server_settings[option] = server_config.getboolean(u"DEFAULT",
2379
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2380
server_settings[option] = server_config.getboolean("DEFAULT",
1732
2381
option)
1733
2382
if server_settings["port"]:
1734
server_settings["port"] = server_config.getint(u"DEFAULT",
1735
u"port")
2383
server_settings["port"] = server_config.getint("DEFAULT",
2384
"port")
2385
if server_settings["socket"]:
2386
server_settings["socket"] = server_config.getint("DEFAULT",
2387
"socket")
2388
# Later, stdin will, and stdout and stderr might, be dup'ed
2389
# over with an opened os.devnull. But we don't want this to
2390
# happen with a supplied network socket.
2391
if 0 <= server_settings["socket"] <= 2:
2392
server_settings["socket"] = os.dup(server_settings
2393
["socket"])
1736
2394
del server_config
1737
2395
1738
2396
# Override the settings from the config file with command line
1739
2397
# options, if set.
1740
for option in (u"interface", u"address", u"port", u"debug",
1741
u"priority", u"servicename", u"configdir",
1742
u"use_dbus", u"use_ipv6", u"debuglevel"):
2398
for option in ("interface", "address", "port", "debug",
2399
"priority", "servicename", "configdir",
2400
"use_dbus", "use_ipv6", "debuglevel", "restore",
2401
"statedir", "socket", "foreground", "zeroconf"):
1743
2402
value = getattr(options, option)
1744
2403
if value is not None:
1745
2404
server_settings[option] = value
1746
2405
del options
1747
2406
# Force all strings to be unicode
1748
2407
for option in server_settings.keys():
1749
if type(server_settings[option]) is str:
1750
server_settings[option] = unicode(server_settings[option])
2408
if isinstance(server_settings[option], bytes):
2409
server_settings[option] = (server_settings[option]
2410
.decode("utf-8"))
2411
# Force all boolean options to be boolean
2412
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2413
"foreground", "zeroconf"):
2414
server_settings[option] = bool(server_settings[option])
2415
# Debug implies foreground
2416
if server_settings["debug"]:
2417
server_settings["foreground"] = True
1751
2418
# Now we have our good server settings in "server_settings"
1752
2419
1753
2420
##################################################################
1754
2421
2422
if (not server_settings["zeroconf"] and
2423
not (server_settings["port"]
2424
or server_settings["socket"] != "")):
2425
parser.error("Needs port or socket to work without"
2426
" Zeroconf")
2427
1755
2428
# For convenience
1756
debug = server_settings[u"debug"]
1757
debuglevel = server_settings[u"debuglevel"]
1758
use_dbus = server_settings[u"use_dbus"]
1759
use_ipv6 = server_settings[u"use_ipv6"]
1760
1761
if server_settings[u"servicename"] != u"Mandos":
2429
debug = server_settings["debug"]
2430
debuglevel = server_settings["debuglevel"]
2431
use_dbus = server_settings["use_dbus"]
2432
use_ipv6 = server_settings["use_ipv6"]
2433
stored_state_path = os.path.join(server_settings["statedir"],
2434
stored_state_file)
2435
foreground = server_settings["foreground"]
2436
zeroconf = server_settings["zeroconf"]
2437
2438
if debug:
2439
initlogger(debug, logging.DEBUG)
2440
else:
2441
if not debuglevel:
2442
initlogger(debug)
2443
else:
2444
level = getattr(logging, debuglevel.upper())
2445
initlogger(debug, level)
2446
2447
if server_settings["servicename"] != "Mandos":
1762
2448
syslogger.setFormatter(logging.Formatter
1763
(u'Mandos (%s) [%%(process)d]:'
1764
u' %%(levelname)s: %%(message)s'
1765
% server_settings[u"servicename"]))
2449
('Mandos ({}) [%(process)d]:'
2450
' %(levelname)s: %(message)s'
2451
.format(server_settings
2452
["servicename"])))
1766
2453
1767
2454
# Parse config file with clients
1768
client_defaults = { u"timeout": u"1h",
1769
u"interval": u"5m",
1770
u"checker": u"fping -q -- %%(host)s",
1771
u"host": u"",
1772
u"approval_delay": u"0s",
1773
u"approval_duration": u"1s",
1774
}
1775
client_config = configparser.SafeConfigParser(client_defaults)
1776
client_config.read(os.path.join(server_settings[u"configdir"],
1777
u"clients.conf"))
2455
client_config = configparser.SafeConfigParser(Client
2456
.client_defaults)
2457
client_config.read(os.path.join(server_settings["configdir"],
2458
"clients.conf"))
1778
2459
1779
2460
global mandos_dbus_service
1780
2461
mandos_dbus_service = None
1781
2462
1782
tcp_server = MandosServer((server_settings[u"address"],
1783
server_settings[u"port"]),
2463
socketfd = None
2464
if server_settings["socket"] != "":
2465
socketfd = server_settings["socket"]
2466
tcp_server = MandosServer((server_settings["address"],
2467
server_settings["port"]),
1784
2468
ClientHandler,
1785
interface=(server_settings[u"interface"]
2469
interface=(server_settings["interface"]
1786
2470
or None),
1787
2471
use_ipv6=use_ipv6,
1788
2472
gnutls_priority=
1789
server_settings[u"priority"],
1790
use_dbus=use_dbus)
1791
if not debug:
1792
pidfilename = u"/var/run/mandos.pid"
2473
server_settings["priority"],
2474
use_dbus=use_dbus,
2475
socketfd=socketfd)
2476
if not foreground:
2477
pidfilename = "/run/mandos.pid"
2478
if not os.path.isdir("/run/."):
2479
pidfilename = "/var/run/mandos.pid"
2480
pidfile = None
1793
2481
try:
1794
pidfile = open(pidfilename, u"w")
1795
except IOError:
1796
logger.error(u"Could not open file %r", pidfilename)
2482
pidfile = open(pidfilename, "w")
2483
except IOError as e:
2484
logger.error("Could not open file %r", pidfilename,
2485
exc_info=e)
1797
2486
1798
try:
1799
uid = pwd.getpwnam(u"_mandos").pw_uid
1800
gid = pwd.getpwnam(u"_mandos").pw_gid
1801
except KeyError:
2487
for name in ("_mandos", "mandos", "nobody"):
1802
2488
try:
1803
uid = pwd.getpwnam(u"mandos").pw_uid
1804
gid = pwd.getpwnam(u"mandos").pw_gid
2489
uid = pwd.getpwnam(name).pw_uid
2490
gid = pwd.getpwnam(name).pw_gid
2491
break
1805
2492
except KeyError:
1806
try:
1807
uid = pwd.getpwnam(u"nobody").pw_uid
1808
gid = pwd.getpwnam(u"nobody").pw_gid
1809
except KeyError:
1810
uid = 65534
1811
gid = 65534
2493
continue
2494
else:
2495
uid = 65534
2496
gid = 65534
1812
2497
try:
1813
2498
os.setgid(gid)
1814
2499
os.setuid(uid)
1815
except OSError, error:
1816
if error[0] != errno.EPERM:
1817
raise error
2500
except OSError as error:
2501
if error.errno != errno.EPERM:
2502
raise
1818
2503
1819
if not debug and not debuglevel:
1820
syslogger.setLevel(logging.WARNING)
1821
console.setLevel(logging.WARNING)
1822
if debuglevel:
1823
level = getattr(logging, debuglevel.upper())
1824
syslogger.setLevel(level)
1825
console.setLevel(level)
1826
1827
2504
if debug:
1828
2505
# Enable all possible GnuTLS debugging
1829
2506
1833
2510
1834
2511
@gnutls.library.types.gnutls_log_func
1835
2512
def debug_gnutls(level, string):
1836
logger.debug(u"GnuTLS: %s", string[:-1])
2513
logger.debug("GnuTLS: %s", string[:-1])
1837
2514
1838
2515
(gnutls.library.functions
1839
2516
.gnutls_global_set_log_function(debug_gnutls))
1840
2517
1841
2518
# Redirect stdin so all checkers get /dev/null
1842
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2519
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1843
2520
os.dup2(null, sys.stdin.fileno())
1844
2521
if null > 2:
1845
2522
os.close(null)
1846
else:
1847
# No console logging
1848
logger.removeHandler(console)
1849
2523
2524
# Need to fork before connecting to D-Bus
2525
if not foreground:
2526
# Close all input and output, do double fork, etc.
2527
daemon()
2528
2529
# multiprocessing will use threads, so before we use gobject we
2530
# need to inform gobject that threads will be used.
2531
gobject.threads_init()
1850
2532
1851
2533
global main_loop
1852
2534
# From the Avahi example code
1853
DBusGMainLoop(set_as_default=True )
2535
DBusGMainLoop(set_as_default=True)
1854
2536
main_loop = gobject.MainLoop()
1855
2537
bus = dbus.SystemBus()
1856
2538
# End of Avahi example code
1857
2539
if use_dbus:
1858
2540
try:
1859
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2541
bus_name = dbus.service.BusName("se.recompile.Mandos",
1860
2542
bus, do_not_queue=True)
1861
except dbus.exceptions.NameExistsException, e:
1862
logger.error(unicode(e) + u", disabling D-Bus")
2543
old_bus_name = (dbus.service.BusName
2544
("se.bsnet.fukt.Mandos", bus,
2545
do_not_queue=True))
2546
except dbus.exceptions.NameExistsException as e:
2547
logger.error("Disabling D-Bus:", exc_info=e)
1863
2548
use_dbus = False
1864
server_settings[u"use_dbus"] = False
2549
server_settings["use_dbus"] = False
1865
2550
tcp_server.use_dbus = False
1866
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1867
service = AvahiService(name = server_settings[u"servicename"],
1868
servicetype = u"_mandos._tcp",
1869
protocol = protocol, bus = bus)
1870
if server_settings["interface"]:
1871
service.interface = (if_nametoindex
1872
(str(server_settings[u"interface"])))
1873
1874
if not debug:
1875
# Close all input and output, do double fork, etc.
1876
daemon()
1877
2551
if zeroconf:
2552
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2553
service = AvahiServiceToSyslog(name =
2554
server_settings["servicename"],
2555
servicetype = "_mandos._tcp",
2556
protocol = protocol, bus = bus)
2557
if server_settings["interface"]:
2558
service.interface = (if_nametoindex
2559
(server_settings["interface"]
2560
.encode("utf-8")))
2561
1878
2562
global multiprocessing_manager
1879
2563
multiprocessing_manager = multiprocessing.Manager()
1880
2564
1881
2565
client_class = Client
1882
2566
if use_dbus:
1883
2567
client_class = functools.partial(ClientDBus, bus = bus)
1884
def client_config_items(config, section):
1885
special_settings = {
1886
"approved_by_default":
1887
lambda: config.getboolean(section,
1888
"approved_by_default"),
1889
}
1890
for name, value in config.items(section):
2568
2569
client_settings = Client.config_parser(client_config)
2570
old_client_settings = {}
2571
clients_data = {}
2572
2573
# This is used to redirect stdout and stderr for checker processes
2574
global wnull
2575
wnull = open(os.devnull, "w") # A writable /dev/null
2576
# Only used if server is running in foreground but not in debug
2577
# mode
2578
if debug or not foreground:
2579
wnull.close()
2580
2581
# Get client data and settings from last running state.
2582
if server_settings["restore"]:
2583
try:
2584
with open(stored_state_path, "rb") as stored_state:
2585
clients_data, old_client_settings = (pickle.load
2586
(stored_state))
2587
os.remove(stored_state_path)
2588
except IOError as e:
2589
if e.errno == errno.ENOENT:
2590
logger.warning("Could not load persistent state: {}"
2591
.format(os.strerror(e.errno)))
2592
else:
2593
logger.critical("Could not load persistent state:",
2594
exc_info=e)
2595
raise
2596
except EOFError as e:
2597
logger.warning("Could not load persistent state: "
2598
"EOFError:", exc_info=e)
2599
2600
with PGPEngine() as pgp:
2601
for client_name, client in clients_data.items():
2602
# Skip removed clients
2603
if client_name not in client_settings:
2604
continue
2605
2606
# Decide which value to use after restoring saved state.
2607
# We have three different values: Old config file,
2608
# new config file, and saved state.
2609
# New config value takes precedence if it differs from old
2610
# config value, otherwise use saved state.
2611
for name, value in client_settings[client_name].items():
2612
try:
2613
# For each value in new config, check if it
2614
# differs from the old config value (Except for
2615
# the "secret" attribute)
2616
if (name != "secret" and
2617
value != old_client_settings[client_name]
2618
[name]):
2619
client[name] = value
2620
except KeyError:
2621
pass
2622
2623
# Clients who has passed its expire date can still be
2624
# enabled if its last checker was successful. Clients
2625
# whose checker succeeded before we stored its state is
2626
# assumed to have successfully run all checkers during
2627
# downtime.
2628
if client["enabled"]:
2629
if datetime.datetime.utcnow() >= client["expires"]:
2630
if not client["last_checked_ok"]:
2631
logger.warning(
2632
"disabling client {} - Client never "
2633
"performed a successful checker"
2634
.format(client_name))
2635
client["enabled"] = False
2636
elif client["last_checker_status"] != 0:
2637
logger.warning(
2638
"disabling client {} - Client last"
2639
" checker failed with error code {}"
2640
.format(client_name,
2641
client["last_checker_status"]))
2642
client["enabled"] = False
2643
else:
2644
client["expires"] = (datetime.datetime
2645
.utcnow()
2646
+ client["timeout"])
2647
logger.debug("Last checker succeeded,"
2648
" keeping {} enabled"
2649
.format(client_name))
1891
2650
try:
1892
yield (name, special_settings[name]())
1893
except KeyError:
1894
yield (name, value)
1895
1896
tcp_server.clients.update(set(
1897
client_class(name = section,
1898
config= dict(client_config_items(
1899
client_config, section)))
1900
for section in client_config.sections()))
2651
client["secret"] = (
2652
pgp.decrypt(client["encrypted_secret"],
2653
client_settings[client_name]
2654
["secret"]))
2655
except PGPError:
2656
# If decryption fails, we use secret from new settings
2657
logger.debug("Failed to decrypt {} old secret"
2658
.format(client_name))
2659
client["secret"] = (
2660
client_settings[client_name]["secret"])
2661
2662
# Add/remove clients based on new changes made to config
2663
for client_name in (set(old_client_settings)
2664
- set(client_settings)):
2665
del clients_data[client_name]
2666
for client_name in (set(client_settings)
2667
- set(old_client_settings)):
2668
clients_data[client_name] = client_settings[client_name]
2669
2670
# Create all client objects
2671
for client_name, client in clients_data.items():
2672
tcp_server.clients[client_name] = client_class(
2673
name = client_name, settings = client,
2674
server_settings = server_settings)
2675
1901
2676
if not tcp_server.clients:
1902
logger.warning(u"No clients defined")
1903
1904
if not debug:
1905
try:
1906
with pidfile:
1907
pid = os.getpid()
1908
pidfile.write(str(pid) + "\n")
1909
del pidfile
1910
except IOError:
1911
logger.error(u"Could not write to file %r with PID %d",
1912
pidfilename, pid)
1913
except NameError:
1914
# "pidfile" was never created
1915
pass
2677
logger.warning("No clients defined")
2678
2679
if not foreground:
2680
if pidfile is not None:
2681
try:
2682
with pidfile:
2683
pid = os.getpid()
2684
pidfile.write("{}\n".format(pid).encode("utf-8"))
2685
except IOError:
2686
logger.error("Could not write to file %r with PID %d",
2687
pidfilename, pid)
2688
del pidfile
1916
2689
del pidfilename
1917
1918
signal.signal(signal.SIGINT, signal.SIG_IGN)
1919
2690
1920
2691
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1921
2692
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1922
2693
1923
2694
if use_dbus:
1924
class MandosDBusService(dbus.service.Object):
2695
@alternate_dbus_interfaces({"se.recompile.Mandos":
2696
"se.bsnet.fukt.Mandos"})
2697
class MandosDBusService(DBusObjectWithProperties):
1925
2698
"""A D-Bus proxy object"""
1926
2699
def __init__(self):
1927
dbus.service.Object.__init__(self, bus, u"/")
1928
_interface = u"se.bsnet.fukt.Mandos"
1929
1930
@dbus.service.signal(_interface, signature=u"o")
2700
dbus.service.Object.__init__(self, bus, "/")
2701
_interface = "se.recompile.Mandos"
2702
2703
@dbus_interface_annotations(_interface)
2704
def _foo(self):
2705
return { "org.freedesktop.DBus.Property"
2706
".EmitsChangedSignal":
2707
"false"}
2708
2709
@dbus.service.signal(_interface, signature="o")
1931
2710
def ClientAdded(self, objpath):
1932
2711
"D-Bus signal"
1933
2712
pass
1934
2713
1935
@dbus.service.signal(_interface, signature=u"ss")
2714
@dbus.service.signal(_interface, signature="ss")
1936
2715
def ClientNotFound(self, fingerprint, address):
1937
2716
"D-Bus signal"
1938
2717
pass
1939
2718
1940
@dbus.service.signal(_interface, signature=u"os")
2719
@dbus.service.signal(_interface, signature="os")
1941
2720
def ClientRemoved(self, objpath, name):
1942
2721
"D-Bus signal"
1943
2722
pass
1944
2723
1945
@dbus.service.method(_interface, out_signature=u"ao")
2724
@dbus.service.method(_interface, out_signature="ao")
1946
2725
def GetAllClients(self):
1947
2726
"D-Bus method"
1948
2727
return dbus.Array(c.dbus_object_path
1949
for c in tcp_server.clients)
2728
for c in
2729
tcp_server.clients.itervalues())
1950
2730
1951
2731
@dbus.service.method(_interface,
1952
out_signature=u"a{oa{sv}}")
2732
out_signature="a{oa{sv}}")
1953
2733
def GetAllClientsWithProperties(self):
1954
2734
"D-Bus method"
1955
2735
return dbus.Dictionary(
1956
((c.dbus_object_path, c.GetAll(u""))
1957
for c in tcp_server.clients),
1958
signature=u"oa{sv}")
2736
{ c.dbus_object_path: c.GetAll("")
2737
for c in tcp_server.clients.itervalues() },
2738
signature="oa{sv}")
1959
2739
1960
@dbus.service.method(_interface, in_signature=u"o")
2740
@dbus.service.method(_interface, in_signature="o")
1961
2741
def RemoveClient(self, object_path):
1962
2742
"D-Bus method"
1963
for c in tcp_server.clients:
2743
for c in tcp_server.clients.itervalues():
1964
2744
if c.dbus_object_path == object_path:
1965
tcp_server.clients.remove(c)
2745
del tcp_server.clients[c.name]
1966
2746
c.remove_from_connection()
1967
2747
# Don't signal anything except ClientRemoved
1968
2748
c.disable(quiet=True)
1977
2757
1978
2758
def cleanup():
1979
2759
"Cleanup function; run on exit"
1980
service.cleanup()
1981
2760
if zeroconf:
2761
service.cleanup()
2762
2763
multiprocessing.active_children()
2764
wnull.close()
2765
if not (tcp_server.clients or client_settings):
2766
return
2767
2768
# Store client before exiting. Secrets are encrypted with key
2769
# based on what config file has. If config file is
2770
# removed/edited, old secret will thus be unrecovable.
2771
clients = {}
2772
with PGPEngine() as pgp:
2773
for client in tcp_server.clients.itervalues():
2774
key = client_settings[client.name]["secret"]
2775
client.encrypted_secret = pgp.encrypt(client.secret,
2776
key)
2777
client_dict = {}
2778
2779
# A list of attributes that can not be pickled
2780
# + secret.
2781
exclude = { "bus", "changedstate", "secret",
2782
"checker", "server_settings" }
2783
for name, typ in (inspect.getmembers
2784
(dbus.service.Object)):
2785
exclude.add(name)
2786
2787
client_dict["encrypted_secret"] = (client
2788
.encrypted_secret)
2789
for attr in client.client_structure:
2790
if attr not in exclude:
2791
client_dict[attr] = getattr(client, attr)
2792
2793
clients[client.name] = client_dict
2794
del client_settings[client.name]["secret"]
2795
2796
try:
2797
with (tempfile.NamedTemporaryFile
2798
(mode='wb', suffix=".pickle", prefix='clients-',
2799
dir=os.path.dirname(stored_state_path),
2800
delete=False)) as stored_state:
2801
pickle.dump((clients, client_settings), stored_state)
2802
tempname=stored_state.name
2803
os.rename(tempname, stored_state_path)
2804
except (IOError, OSError) as e:
2805
if not debug:
2806
try:
2807
os.remove(tempname)
2808
except NameError:
2809
pass
2810
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2811
logger.warning("Could not save persistent state: {}"
2812
.format(os.strerror(e.errno)))
2813
else:
2814
logger.warning("Could not save persistent state:",
2815
exc_info=e)
2816
raise
2817
2818
# Delete all clients, and settings from config
1982
2819
while tcp_server.clients:
1983
client = tcp_server.clients.pop()
2820
name, client = tcp_server.clients.popitem()
1984
2821
if use_dbus:
1985
2822
client.remove_from_connection()
1986
client.disable_hook = None
1987
2823
# Don't signal anything except ClientRemoved
1988
2824
client.disable(quiet=True)
1989
2825
if use_dbus:
1990
2826
# Emit D-Bus signal
1991
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2827
mandos_dbus_service.ClientRemoved(client
2828
.dbus_object_path,
1992
2829
client.name)
2830
client_settings.clear()
1993
2831
1994
2832
atexit.register(cleanup)
1995
2833
1996
for client in tcp_server.clients:
2834
for client in tcp_server.clients.itervalues():
1997
2835
if use_dbus:
1998
2836
# Emit D-Bus signal
1999
2837
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2000
client.enable()
2838
# Need to initiate checking of clients
2839
if client.enabled:
2840
client.init_checker()
2001
2841
2002
2842
tcp_server.enable()
2003
2843
tcp_server.server_activate()
2004
2844
2005
2845
# Find out what port we got
2006
service.port = tcp_server.socket.getsockname()[1]
2846
if zeroconf:
2847
service.port = tcp_server.socket.getsockname()[1]
2007
2848
if use_ipv6:
2008
logger.info(u"Now listening on address %r, port %d,"
2009
" flowinfo %d, scope_id %d"
2010
% tcp_server.socket.getsockname())
2849
logger.info("Now listening on address %r, port %d,"
2850
" flowinfo %d, scope_id %d",
2851
*tcp_server.socket.getsockname())
2011
2852
else: # IPv4
2012
logger.info(u"Now listening on address %r, port %d"
2013
% tcp_server.socket.getsockname())
2853
logger.info("Now listening on address %r, port %d",
2854
*tcp_server.socket.getsockname())
2014
2855
2015
2856
#service.interface = tcp_server.socket.getsockname()[3]
2016
2857
2017
2858
try:
2018
# From the Avahi example code
2019
try:
2020
service.activate()
2021
except dbus.exceptions.DBusException, error:
2022
logger.critical(u"DBusException: %s", error)
2023
cleanup()
2024
sys.exit(1)
2025
# End of Avahi example code
2859
if zeroconf:
2860
# From the Avahi example code
2861
try:
2862
service.activate()
2863
except dbus.exceptions.DBusException as error:
2864
logger.critical("D-Bus Exception", exc_info=error)
2865
cleanup()
2866
sys.exit(1)
2867
# End of Avahi example code
2026
2868
2027
2869
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2028
2870
lambda *args, **kwargs:
2029
2871
(tcp_server.handle_request
2030
2872
(*args[2:], **kwargs) or True))
2031
2873
2032
logger.debug(u"Starting main loop")
2874
logger.debug("Starting main loop")
2033
2875
main_loop.run()
2034
except AvahiError, error:
2035
logger.critical(u"AvahiError: %s", error)
2876
except AvahiError as error:
2877
logger.critical("Avahi Error", exc_info=error)
2036
2878
cleanup()
2037
2879
sys.exit(1)
2038
2880
except KeyboardInterrupt:
2039
2881
if debug:
2040
print >> sys.stderr
2041
logger.debug(u"Server received KeyboardInterrupt")
2042
logger.debug(u"Server exiting")
2882
print("", file=sys.stderr)
2883
logger.debug("Server received KeyboardInterrupt")
2884
logger.debug("Server exiting")
2043
2885
# Must run before the D-Bus bus name gets deregistered
2044
2886
cleanup()
2045
2887
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0