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- Committer: Teddy Hogeborn
- Date: 2011-03-08 19:12:56 UTC
- mfrom: (237.7.20 trunk)
- Revision ID: teddy@fukt.bsnet.se-20110308191256-mjcukty9on3z0yhd
Merge from trunk.
- files added:
- DBUS-API
- debian/source
- files modified:
- .bzrignore
added
removed
mandos
11
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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 © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 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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# Contact the authors at <mandos@fukt.bsnet.se>.
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#
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from __future__ import division, with_statement, absolute_import
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from __future__ import (division, absolute_import, print_function,
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unicode_literals)
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import SocketServer as socketserver
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import socket
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import logging
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import logging.handlers
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import pwd
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from contextlib import closing
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import contextlib
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import struct
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import fcntl
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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 dbus
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import dbus.service
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from dbus.mainloop.glib import DBusGMainLoop
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import ctypes
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import ctypes.util
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import xml.dom.minidom
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import inspect
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try:
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SO_BINDTODEVICE = socket.SO_BINDTODEVICE
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SO_BINDTODEVICE = None
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version = "1.0.8"
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version = "1.2.3"
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logger = logging.Logger(u'mandos')
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#logger = logging.getLogger('mandos')
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logger = logging.Logger('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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address = str("/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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('Mandos [%(process)d]: %(levelname)s:'
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' %(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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console.setFormatter(logging.Formatter('%(name)s [%(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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class AvahiError(Exception):
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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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name: string; Example: 'Mandos'
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type: string; Example: '_mandos._tcp'.
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See <http://www.dns-sd.org/ServiceTypes.html>
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port: integer; what port to announce
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TXT: list of strings; TXT record for the service
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"""
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def __init__(self, interface = avahi.IF_UNSPEC, name = None,
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servicetype = None, port = None, TXT = None,
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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
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def rename(self):
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"""Derived from the Avahi example code"""
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if self.rename_count >= self.max_renames:
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logger.critical(u"No suitable Zeroconf service name found"
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u" after %i retries, exiting.",
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logger.critical("No suitable Zeroconf service name found"
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" after %i retries, exiting.",
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self.rename_count)
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raise AvahiServiceError(u"Too many renames")
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self.name = self.server.GetAlternativeServiceName(self.name)
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logger.info(u"Changing Zeroconf service name to %r ...",
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unicode(self.name))
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raise AvahiServiceError("Too many renames")
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self.name = unicode(self.server.GetAlternativeServiceName(self.name))
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logger.info("Changing Zeroconf service name to %r ...",
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self.name)
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syslogger.setFormatter(logging.Formatter
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(u'Mandos (%s) [%%(process)d]:'
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u' %%(levelname)s: %%(message)s'
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('Mandos (%s) [%%(process)d]:'
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' %%(levelname)s: %%(message)s'
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% self.name))
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self.remove()
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self.add()
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try:
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self.add()
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except dbus.exceptions.DBusException, error:
172
logger.critical("DBusException: %s", error)
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self.cleanup()
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os._exit(1)
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self.rename_count += 1
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def remove(self):
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"""Derived from the Avahi example code"""
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self.server.EntryGroupNew()),
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avahi.DBUS_INTERFACE_ENTRY_GROUP)
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self.group.connect_to_signal('StateChanged',
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self.entry_group_state_changed)
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logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
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self
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.entry_group_state_changed)
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logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
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self.name, self.type)
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self.group.AddService(
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self.interface,
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self.group.Commit()
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def entry_group_state_changed(self, state, error):
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"""Derived from the Avahi example code"""
191
logger.debug(u"Avahi state change: %i", state)
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logger.debug("Avahi entry group state change: %i", state)
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if state == avahi.ENTRY_GROUP_ESTABLISHED:
194
logger.debug(u"Zeroconf service established.")
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logger.debug("Zeroconf service established.")
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elif state == avahi.ENTRY_GROUP_COLLISION:
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logger.warning(u"Zeroconf service name collision.")
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logger.info("Zeroconf service name collision.")
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self.rename()
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elif state == avahi.ENTRY_GROUP_FAILURE:
199
logger.critical(u"Avahi: Error in group state changed %s",
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logger.critical("Avahi: Error in group state changed %s",
200
212
unicode(error))
201
raise AvahiGroupError(u"State changed: %s"
213
raise AvahiGroupError("State changed: %s"
202
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% unicode(error))
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def cleanup(self):
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"""Derived from the Avahi example code"""
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self.group = None
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def server_state_changed(self, state):
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"""Derived from the Avahi example code"""
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logger.debug("Avahi server state change: %i", state)
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if state == avahi.SERVER_COLLISION:
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logger.error(u"Zeroconf server name collision")
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logger.error("Zeroconf server name collision")
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self.remove()
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elif state == avahi.SERVER_RUNNING:
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self.add()
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self.bus.get_object(avahi.DBUS_NAME,
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avahi.DBUS_PATH_SERVER),
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avahi.DBUS_INTERFACE_SERVER)
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self.server.connect_to_signal(u"StateChanged",
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self.server.connect_to_signal("StateChanged",
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self.server_state_changed)
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self.server_state_changed(self.server.GetState())
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"""A representation of a client host served by this server.
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Attributes:
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name: string; from the config file, used in log messages and
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D-Bus identifiers
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fingerprint: string (40 or 32 hexadecimal digits); used to
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uniquely identify the client
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secret: bytestring; sent verbatim (over TLS) to client
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host: string; available for use by the checker command
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created: datetime.datetime(); (UTC) object creation
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last_enabled: datetime.datetime(); (UTC)
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enabled: bool()
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last_checked_ok: datetime.datetime(); (UTC) or None
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timeout: datetime.timedelta(); How long from last_checked_ok
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until this client is invalid
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interval: datetime.timedelta(); How often to start a new checker
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disable_hook: If set, called by disable() as disable_hook(self)
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_approved: bool(); 'None' if not yet approved/disapproved
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approval_delay: datetime.timedelta(); Time to wait for approval
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approval_duration: datetime.timedelta(); Duration of one approval
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checker: subprocess.Popen(); a running checker process used
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to see if the client lives.
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'None' if no process is running.
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checker_initiator_tag: a gobject event source tag, or None
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disable_initiator_tag: - '' -
250
checker_callback_tag: - '' -
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checker_command: string; External command which is run to check if
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client lives. %() expansions are done at
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checker_callback_tag: a gobject event source tag, or None
251
checker_command: string; External command which is run to check
252
if client lives. %() expansions are done at
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runtime with vars(self) as dict, so that for
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instance %(name)s can be used in the command.
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checker_initiator_tag: a gobject event source tag, or None
256
created: datetime.datetime(); (UTC) object creation
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current_checker_command: string; current running checker_command
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disable_hook: If set, called by disable() as disable_hook(self)
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disable_initiator_tag: a gobject event source tag, or None
260
enabled: bool()
261
fingerprint: string (40 or 32 hexadecimal digits); used to
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uniquely identify the client
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host: string; available for use by the checker command
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interval: datetime.timedelta(); How often to start a new checker
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last_approval_request: datetime.datetime(); (UTC) or None
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last_checked_ok: datetime.datetime(); (UTC) or None
267
last_enabled: datetime.datetime(); (UTC)
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name: string; from the config file, used in log messages and
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D-Bus identifiers
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secret: bytestring; sent verbatim (over TLS) to client
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timeout: datetime.timedelta(); How long from last_checked_ok
272
until this client is disabled
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runtime_expansions: Allowed attributes for runtime expansion.
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"""
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runtime_expansions = ("approval_delay", "approval_duration",
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"created", "enabled", "fingerprint",
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"host", "interval", "last_checked_ok",
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"last_enabled", "name", "timeout")
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@staticmethod
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def _datetime_to_milliseconds(dt):
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"Convert a datetime.datetime() to milliseconds"
261
return ((dt.days * 24 * 60 * 60 * 1000)
262
+ (dt.seconds * 1000)
263
+ (dt.microseconds // 1000))
282
def _timedelta_to_milliseconds(td):
283
"Convert a datetime.timedelta() to milliseconds"
284
return ((td.days * 24 * 60 * 60 * 1000)
285
+ (td.seconds * 1000)
286
+ (td.microseconds // 1000))
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265
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def timeout_milliseconds(self):
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"Return the 'timeout' attribute in milliseconds"
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return self._datetime_to_milliseconds(self.timeout)
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return self._timedelta_to_milliseconds(self.timeout)
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def interval_milliseconds(self):
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"Return the 'interval' attribute in milliseconds"
271
return self._datetime_to_milliseconds(self.interval)
294
return self._timedelta_to_milliseconds(self.interval)
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def approval_delay_milliseconds(self):
297
return self._timedelta_to_milliseconds(self.approval_delay)
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def __init__(self, name = None, disable_hook=None, config=None):
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"""Note: the 'checker' key in 'config' sets the
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self.name = name
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if config is None:
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config = {}
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logger.debug(u"Creating client %r", self.name)
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logger.debug("Creating client %r", self.name)
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# Uppercase and remove spaces from fingerprint for later
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# comparison purposes with return value from the fingerprint()
283
309
# function
284
self.fingerprint = (config[u"fingerprint"].upper()
285
.replace(u" ", u""))
286
logger.debug(u" Fingerprint: %s", self.fingerprint)
287
if u"secret" in config:
288
self.secret = config[u"secret"].decode(u"base64")
289
elif u"secfile" in config:
290
with closing(open(os.path.expanduser
291
(os.path.expandvars
292
(config[u"secfile"])))) as secfile:
310
self.fingerprint = (config["fingerprint"].upper()
311
.replace(" ", ""))
312
logger.debug(" Fingerprint: %s", self.fingerprint)
313
if "secret" in config:
314
self.secret = config["secret"].decode("base64")
315
elif "secfile" in config:
316
with open(os.path.expanduser(os.path.expandvars
317
(config["secfile"])),
318
"rb") as secfile:
293
319
self.secret = secfile.read()
294
320
else:
295
raise TypeError(u"No secret or secfile for client %s"
321
raise TypeError("No secret or secfile for client %s"
296
322
% self.name)
297
self.host = config.get(u"host", u"")
323
self.host = config.get("host", "")
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self.created = datetime.datetime.utcnow()
299
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self.enabled = False
326
self.last_approval_request = None
300
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self.last_enabled = None
301
328
self.last_checked_ok = None
302
self.timeout = string_to_delta(config[u"timeout"])
303
self.interval = string_to_delta(config[u"interval"])
329
self.timeout = string_to_delta(config["timeout"])
330
self.interval = string_to_delta(config["interval"])
304
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self.disable_hook = disable_hook
305
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self.checker = None
306
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self.checker_initiator_tag = None
307
334
self.disable_initiator_tag = None
308
335
self.checker_callback_tag = None
309
self.checker_command = config[u"checker"]
336
self.checker_command = config["checker"]
310
337
self.current_checker_command = None
311
338
self.last_connect = None
339
self._approved = None
340
self.approved_by_default = config.get("approved_by_default",
341
True)
342
self.approvals_pending = 0
343
self.approval_delay = string_to_delta(
344
config["approval_delay"])
345
self.approval_duration = string_to_delta(
346
config["approval_duration"])
347
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
312
348
349
def send_changedstate(self):
350
self.changedstate.acquire()
351
self.changedstate.notify_all()
352
self.changedstate.release()
353
313
354
def enable(self):
314
355
"""Start this client's checker and timeout hooks"""
356
if getattr(self, "enabled", False):
357
# Already enabled
358
return
359
self.send_changedstate()
315
360
self.last_enabled = datetime.datetime.utcnow()
316
361
# Schedule a new checker to be started an 'interval' from now,
317
362
# and every interval from then on.
318
363
self.checker_initiator_tag = (gobject.timeout_add
319
364
(self.interval_milliseconds(),
320
365
self.start_checker))
321
# Also start a new checker *right now*.
322
self.start_checker()
323
366
# Schedule a disable() when 'timeout' has passed
324
367
self.disable_initiator_tag = (gobject.timeout_add
325
368
(self.timeout_milliseconds(),
326
369
self.disable))
327
370
self.enabled = True
371
# Also start a new checker *right now*.
372
self.start_checker()
328
373
329
def disable(self):
374
def disable(self, quiet=True):
330
375
"""Disable this client."""
331
376
if not getattr(self, "enabled", False):
332
377
return False
333
logger.info(u"Disabling client %s", self.name)
334
if getattr(self, u"disable_initiator_tag", False):
378
if not quiet:
379
self.send_changedstate()
380
if not quiet:
381
logger.info("Disabling client %s", self.name)
382
if getattr(self, "disable_initiator_tag", False):
335
383
gobject.source_remove(self.disable_initiator_tag)
336
384
self.disable_initiator_tag = None
337
if getattr(self, u"checker_initiator_tag", False):
385
if getattr(self, "checker_initiator_tag", False):
338
386
gobject.source_remove(self.checker_initiator_tag)
339
387
self.checker_initiator_tag = None
340
388
self.stop_checker()
355
403
if os.WIFEXITED(condition):
356
404
exitstatus = os.WEXITSTATUS(condition)
357
405
if exitstatus == 0:
358
logger.info(u"Checker for %(name)s succeeded",
406
logger.info("Checker for %(name)s succeeded",
359
407
vars(self))
360
408
self.checked_ok()
361
409
else:
362
logger.info(u"Checker for %(name)s failed",
410
logger.info("Checker for %(name)s failed",
363
411
vars(self))
364
412
else:
365
logger.warning(u"Checker for %(name)s crashed?",
413
logger.warning("Checker for %(name)s crashed?",
366
414
vars(self))
367
415
368
416
def checked_ok(self):
377
425
(self.timeout_milliseconds(),
378
426
self.disable))
379
427
428
def need_approval(self):
429
self.last_approval_request = datetime.datetime.utcnow()
430
380
431
def start_checker(self):
381
432
"""Start a new checker subprocess if one is not running.
382
433
388
439
# client would inevitably timeout, since no checker would get
389
440
# a chance to run to completion. If we instead leave running
390
441
# checkers alone, the checker would have to take more time
391
# than 'timeout' for the client to be declared invalid, which
392
# is as it should be.
442
# than 'timeout' for the client to be disabled, which is as it
443
# should be.
393
444
394
445
# If a checker exists, make sure it is not a zombie
395
if self.checker is not None:
446
try:
396
447
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
448
except (AttributeError, OSError), error:
449
if (isinstance(error, OSError)
450
and error.errno != errno.ECHILD):
451
raise error
452
else:
397
453
if pid:
398
logger.warning(u"Checker was a zombie")
454
logger.warning("Checker was a zombie")
399
455
gobject.source_remove(self.checker_callback_tag)
400
456
self.checker_callback(pid, status,
401
457
self.current_checker_command)
406
462
command = self.checker_command % self.host
407
463
except TypeError:
408
464
# Escape attributes for the shell
409
escaped_attrs = dict((key,
410
re.escape(unicode(str(val),
411
errors=
412
u'replace')))
413
for key, val in
414
vars(self).iteritems())
465
escaped_attrs = dict(
466
(attr,
467
re.escape(unicode(str(getattr(self, attr, "")),
468
errors=
469
'replace')))
470
for attr in
471
self.runtime_expansions)
472
415
473
try:
416
474
command = self.checker_command % escaped_attrs
417
475
except TypeError, error:
418
logger.error(u'Could not format string "%s":'
419
u' %s', self.checker_command, error)
476
logger.error('Could not format string "%s":'
477
' %s', self.checker_command, error)
420
478
return True # Try again later
421
479
self.current_checker_command = command
422
480
try:
423
logger.info(u"Starting checker %r for %s",
481
logger.info("Starting checker %r for %s",
424
482
command, self.name)
425
483
# We don't need to redirect stdout and stderr, since
426
484
# in normal mode, that is already done by daemon(),
428
486
# always replaced by /dev/null.)
429
487
self.checker = subprocess.Popen(command,
430
488
close_fds=True,
431
shell=True, cwd=u"/")
489
shell=True, cwd="/")
432
490
self.checker_callback_tag = (gobject.child_watch_add
433
491
(self.checker.pid,
434
492
self.checker_callback,
440
498
gobject.source_remove(self.checker_callback_tag)
441
499
self.checker_callback(pid, status, command)
442
500
except OSError, error:
443
logger.error(u"Failed to start subprocess: %s",
501
logger.error("Failed to start subprocess: %s",
444
502
error)
445
503
# Re-run this periodically if run by gobject.timeout_add
446
504
return True
450
508
if self.checker_callback_tag:
451
509
gobject.source_remove(self.checker_callback_tag)
452
510
self.checker_callback_tag = None
453
if getattr(self, u"checker", None) is None:
511
if getattr(self, "checker", None) is None:
454
512
return
455
logger.debug(u"Stopping checker for %(name)s", vars(self))
513
logger.debug("Stopping checker for %(name)s", vars(self))
456
514
try:
457
515
os.kill(self.checker.pid, signal.SIGTERM)
458
#os.sleep(0.5)
516
#time.sleep(0.5)
459
517
#if self.checker.poll() is None:
460
518
# os.kill(self.checker.pid, signal.SIGKILL)
461
519
except OSError, error:
462
520
if error.errno != errno.ESRCH: # No such process
463
521
raise
464
522
self.checker = None
465
466
def still_valid(self):
467
"""Has the timeout not yet passed for this client?"""
468
if not getattr(self, u"enabled", False):
469
return False
470
now = datetime.datetime.utcnow()
471
if self.last_checked_ok is None:
472
return now < (self.created + self.timeout)
473
else:
474
return now < (self.last_checked_ok + self.timeout)
475
476
477
class ClientDBus(Client, dbus.service.Object):
523
524
def dbus_service_property(dbus_interface, signature="v",
525
access="readwrite", byte_arrays=False):
526
"""Decorators for marking methods of a DBusObjectWithProperties to
527
become properties on the D-Bus.
528
529
The decorated method will be called with no arguments by "Get"
530
and with one argument by "Set".
531
532
The parameters, where they are supported, are the same as
533
dbus.service.method, except there is only "signature", since the
534
type from Get() and the type sent to Set() is the same.
535
"""
536
# Encoding deeply encoded byte arrays is not supported yet by the
537
# "Set" method, so we fail early here:
538
if byte_arrays and signature != "ay":
539
raise ValueError("Byte arrays not supported for non-'ay'"
540
" signature %r" % signature)
541
def decorator(func):
542
func._dbus_is_property = True
543
func._dbus_interface = dbus_interface
544
func._dbus_signature = signature
545
func._dbus_access = access
546
func._dbus_name = func.__name__
547
if func._dbus_name.endswith("_dbus_property"):
548
func._dbus_name = func._dbus_name[:-14]
549
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
550
return func
551
return decorator
552
553
554
class DBusPropertyException(dbus.exceptions.DBusException):
555
"""A base class for D-Bus property-related exceptions
556
"""
557
def __unicode__(self):
558
return unicode(str(self))
559
560
561
class DBusPropertyAccessException(DBusPropertyException):
562
"""A property's access permissions disallows an operation.
563
"""
564
pass
565
566
567
class DBusPropertyNotFound(DBusPropertyException):
568
"""An attempt was made to access a non-existing property.
569
"""
570
pass
571
572
573
class DBusObjectWithProperties(dbus.service.Object):
574
"""A D-Bus object with properties.
575
576
Classes inheriting from this can use the dbus_service_property
577
decorator to expose methods as D-Bus properties. It exposes the
578
standard Get(), Set(), and GetAll() methods on the D-Bus.
579
"""
580
581
@staticmethod
582
def _is_dbus_property(obj):
583
return getattr(obj, "_dbus_is_property", False)
584
585
def _get_all_dbus_properties(self):
586
"""Returns a generator of (name, attribute) pairs
587
"""
588
return ((prop._dbus_name, prop)
589
for name, prop in
590
inspect.getmembers(self, self._is_dbus_property))
591
592
def _get_dbus_property(self, interface_name, property_name):
593
"""Returns a bound method if one exists which is a D-Bus
594
property with the specified name and interface.
595
"""
596
for name in (property_name,
597
property_name + "_dbus_property"):
598
prop = getattr(self, name, None)
599
if (prop is None
600
or not self._is_dbus_property(prop)
601
or prop._dbus_name != property_name
602
or (interface_name and prop._dbus_interface
603
and interface_name != prop._dbus_interface)):
604
continue
605
return prop
606
# No such property
607
raise DBusPropertyNotFound(self.dbus_object_path + ":"
608
+ interface_name + "."
609
+ property_name)
610
611
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
612
out_signature="v")
613
def Get(self, interface_name, property_name):
614
"""Standard D-Bus property Get() method, see D-Bus standard.
615
"""
616
prop = self._get_dbus_property(interface_name, property_name)
617
if prop._dbus_access == "write":
618
raise DBusPropertyAccessException(property_name)
619
value = prop()
620
if not hasattr(value, "variant_level"):
621
return value
622
return type(value)(value, variant_level=value.variant_level+1)
623
624
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
625
def Set(self, interface_name, property_name, value):
626
"""Standard D-Bus property Set() method, see D-Bus standard.
627
"""
628
prop = self._get_dbus_property(interface_name, property_name)
629
if prop._dbus_access == "read":
630
raise DBusPropertyAccessException(property_name)
631
if prop._dbus_get_args_options["byte_arrays"]:
632
# The byte_arrays option is not supported yet on
633
# signatures other than "ay".
634
if prop._dbus_signature != "ay":
635
raise ValueError
636
value = dbus.ByteArray(''.join(unichr(byte)
637
for byte in value))
638
prop(value)
639
640
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
641
out_signature="a{sv}")
642
def GetAll(self, interface_name):
643
"""Standard D-Bus property GetAll() method, see D-Bus
644
standard.
645
646
Note: Will not include properties with access="write".
647
"""
648
all = {}
649
for name, prop in self._get_all_dbus_properties():
650
if (interface_name
651
and interface_name != prop._dbus_interface):
652
# Interface non-empty but did not match
653
continue
654
# Ignore write-only properties
655
if prop._dbus_access == "write":
656
continue
657
value = prop()
658
if not hasattr(value, "variant_level"):
659
all[name] = value
660
continue
661
all[name] = type(value)(value, variant_level=
662
value.variant_level+1)
663
return dbus.Dictionary(all, signature="sv")
664
665
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
666
out_signature="s",
667
path_keyword='object_path',
668
connection_keyword='connection')
669
def Introspect(self, object_path, connection):
670
"""Standard D-Bus method, overloaded to insert property tags.
671
"""
672
xmlstring = dbus.service.Object.Introspect(self, object_path,
673
connection)
674
try:
675
document = xml.dom.minidom.parseString(xmlstring)
676
def make_tag(document, name, prop):
677
e = document.createElement("property")
678
e.setAttribute("name", name)
679
e.setAttribute("type", prop._dbus_signature)
680
e.setAttribute("access", prop._dbus_access)
681
return e
682
for if_tag in document.getElementsByTagName("interface"):
683
for tag in (make_tag(document, name, prop)
684
for name, prop
685
in self._get_all_dbus_properties()
686
if prop._dbus_interface
687
== if_tag.getAttribute("name")):
688
if_tag.appendChild(tag)
689
# Add the names to the return values for the
690
# "org.freedesktop.DBus.Properties" methods
691
if (if_tag.getAttribute("name")
692
== "org.freedesktop.DBus.Properties"):
693
for cn in if_tag.getElementsByTagName("method"):
694
if cn.getAttribute("name") == "Get":
695
for arg in cn.getElementsByTagName("arg"):
696
if (arg.getAttribute("direction")
697
== "out"):
698
arg.setAttribute("name", "value")
699
elif cn.getAttribute("name") == "GetAll":
700
for arg in cn.getElementsByTagName("arg"):
701
if (arg.getAttribute("direction")
702
== "out"):
703
arg.setAttribute("name", "props")
704
xmlstring = document.toxml("utf-8")
705
document.unlink()
706
except (AttributeError, xml.dom.DOMException,
707
xml.parsers.expat.ExpatError), error:
708
logger.error("Failed to override Introspection method",
709
error)
710
return xmlstring
711
712
713
class ClientDBus(Client, DBusObjectWithProperties):
478
714
"""A Client class using D-Bus
479
715
480
716
Attributes:
481
717
dbus_object_path: dbus.ObjectPath
482
718
bus: dbus.SystemBus()
483
719
"""
720
721
runtime_expansions = (Client.runtime_expansions
722
+ ("dbus_object_path",))
723
484
724
# dbus.service.Object doesn't use super(), so we can't either.
485
725
486
726
def __init__(self, bus = None, *args, **kwargs):
727
self._approvals_pending = 0
487
728
self.bus = bus
488
729
Client.__init__(self, *args, **kwargs)
489
730
# Only now, when this client is initialized, can it show up on
490
731
# the D-Bus
732
client_object_name = unicode(self.name).translate(
733
{ord("."): ord("_"),
734
ord("-"): ord("_")})
491
735
self.dbus_object_path = (dbus.ObjectPath
492
(u"/clients/"
493
+ self.name.replace(u".", u"_")))
494
dbus.service.Object.__init__(self, self.bus,
495
self.dbus_object_path)
736
("/clients/" + client_object_name))
737
DBusObjectWithProperties.__init__(self, self.bus,
738
self.dbus_object_path)
739
740
def _get_approvals_pending(self):
741
return self._approvals_pending
742
def _set_approvals_pending(self, value):
743
old_value = self._approvals_pending
744
self._approvals_pending = value
745
bval = bool(value)
746
if (hasattr(self, "dbus_object_path")
747
and bval is not bool(old_value)):
748
dbus_bool = dbus.Boolean(bval, variant_level=1)
749
self.PropertyChanged(dbus.String("ApprovalPending"),
750
dbus_bool)
751
752
approvals_pending = property(_get_approvals_pending,
753
_set_approvals_pending)
754
del _get_approvals_pending, _set_approvals_pending
496
755
497
756
@staticmethod
498
757
def _datetime_to_dbus(dt, variant_level=0):
501
760
variant_level=variant_level)
502
761
503
762
def enable(self):
504
oldstate = getattr(self, u"enabled", False)
763
oldstate = getattr(self, "enabled", False)
505
764
r = Client.enable(self)
506
765
if oldstate != self.enabled:
507
766
# Emit D-Bus signals
508
self.PropertyChanged(dbus.String(u"enabled"),
767
self.PropertyChanged(dbus.String("Enabled"),
509
768
dbus.Boolean(True, variant_level=1))
510
769
self.PropertyChanged(
511
dbus.String(u"last_enabled"),
770
dbus.String("LastEnabled"),
512
771
self._datetime_to_dbus(self.last_enabled,
513
772
variant_level=1))
514
773
return r
515
774
516
def disable(self, signal = True):
517
oldstate = getattr(self, u"enabled", False)
518
r = Client.disable(self)
519
if signal and oldstate != self.enabled:
775
def disable(self, quiet = False):
776
oldstate = getattr(self, "enabled", False)
777
r = Client.disable(self, quiet=quiet)
778
if not quiet and oldstate != self.enabled:
520
779
# Emit D-Bus signal
521
self.PropertyChanged(dbus.String(u"enabled"),
780
self.PropertyChanged(dbus.String("Enabled"),
522
781
dbus.Boolean(False, variant_level=1))
523
782
return r
524
783
527
786
self.remove_from_connection()
528
787
except LookupError:
529
788
pass
530
if hasattr(dbus.service.Object, u"__del__"):
531
dbus.service.Object.__del__(self, *args, **kwargs)
789
if hasattr(DBusObjectWithProperties, "__del__"):
790
DBusObjectWithProperties.__del__(self, *args, **kwargs)
532
791
Client.__del__(self, *args, **kwargs)
533
792
534
793
def checker_callback(self, pid, condition, command,
536
795
self.checker_callback_tag = None
537
796
self.checker = None
538
797
# Emit D-Bus signal
539
self.PropertyChanged(dbus.String(u"checker_running"),
798
self.PropertyChanged(dbus.String("CheckerRunning"),
540
799
dbus.Boolean(False, variant_level=1))
541
800
if os.WIFEXITED(condition):
542
801
exitstatus = os.WEXITSTATUS(condition)
557
816
r = Client.checked_ok(self, *args, **kwargs)
558
817
# Emit D-Bus signal
559
818
self.PropertyChanged(
560
dbus.String(u"last_checked_ok"),
819
dbus.String("LastCheckedOK"),
561
820
(self._datetime_to_dbus(self.last_checked_ok,
562
821
variant_level=1)))
563
822
return r
564
823
824
def need_approval(self, *args, **kwargs):
825
r = Client.need_approval(self, *args, **kwargs)
826
# Emit D-Bus signal
827
self.PropertyChanged(
828
dbus.String("LastApprovalRequest"),
829
(self._datetime_to_dbus(self.last_approval_request,
830
variant_level=1)))
831
return r
832
565
833
def start_checker(self, *args, **kwargs):
566
834
old_checker = self.checker
567
835
if self.checker is not None:
575
843
# Emit D-Bus signal
576
844
self.CheckerStarted(self.current_checker_command)
577
845
self.PropertyChanged(
578
dbus.String(u"checker_running"),
846
dbus.String("CheckerRunning"),
579
847
dbus.Boolean(True, variant_level=1))
580
848
return r
581
849
582
850
def stop_checker(self, *args, **kwargs):
583
old_checker = getattr(self, u"checker", None)
851
old_checker = getattr(self, "checker", None)
584
852
r = Client.stop_checker(self, *args, **kwargs)
585
853
if (old_checker is not None
586
and getattr(self, u"checker", None) is None):
587
self.PropertyChanged(dbus.String(u"checker_running"),
854
and getattr(self, "checker", None) is None):
855
self.PropertyChanged(dbus.String("CheckerRunning"),
588
856
dbus.Boolean(False, variant_level=1))
589
857
return r
590
591
## D-Bus methods & signals
592
_interface = u"se.bsnet.fukt.Mandos.Client"
593
594
# CheckedOK - method
595
@dbus.service.method(_interface)
596
def CheckedOK(self):
597
return self.checked_ok()
858
859
def _reset_approved(self):
860
self._approved = None
861
return False
862
863
def approve(self, value=True):
864
self.send_changedstate()
865
self._approved = value
866
gobject.timeout_add(self._timedelta_to_milliseconds
867
(self.approval_duration),
868
self._reset_approved)
869
870
871
## D-Bus methods, signals & properties
872
_interface = "se.bsnet.fukt.Mandos.Client"
873
874
## Signals
598
875
599
876
# CheckerCompleted - signal
600
@dbus.service.signal(_interface, signature=u"nxs")
877
@dbus.service.signal(_interface, signature="nxs")
601
878
def CheckerCompleted(self, exitcode, waitstatus, command):
602
879
"D-Bus signal"
603
880
pass
604
881
605
882
# CheckerStarted - signal
606
@dbus.service.signal(_interface, signature=u"s")
883
@dbus.service.signal(_interface, signature="s")
607
884
def CheckerStarted(self, command):
608
885
"D-Bus signal"
609
886
pass
610
887
611
# GetAllProperties - method
612
@dbus.service.method(_interface, out_signature=u"a{sv}")
613
def GetAllProperties(self):
614
"D-Bus method"
615
return dbus.Dictionary({
616
dbus.String(u"name"):
617
dbus.String(self.name, variant_level=1),
618
dbus.String(u"fingerprint"):
619
dbus.String(self.fingerprint, variant_level=1),
620
dbus.String(u"host"):
621
dbus.String(self.host, variant_level=1),
622
dbus.String(u"created"):
623
self._datetime_to_dbus(self.created,
624
variant_level=1),
625
dbus.String(u"last_enabled"):
626
(self._datetime_to_dbus(self.last_enabled,
627
variant_level=1)
628
if self.last_enabled is not None
629
else dbus.Boolean(False, variant_level=1)),
630
dbus.String(u"enabled"):
631
dbus.Boolean(self.enabled, variant_level=1),
632
dbus.String(u"last_checked_ok"):
633
(self._datetime_to_dbus(self.last_checked_ok,
634
variant_level=1)
635
if self.last_checked_ok is not None
636
else dbus.Boolean (False, variant_level=1)),
637
dbus.String(u"timeout"):
638
dbus.UInt64(self.timeout_milliseconds(),
639
variant_level=1),
640
dbus.String(u"interval"):
641
dbus.UInt64(self.interval_milliseconds(),
642
variant_level=1),
643
dbus.String(u"checker"):
644
dbus.String(self.checker_command,
645
variant_level=1),
646
dbus.String(u"checker_running"):
647
dbus.Boolean(self.checker is not None,
648
variant_level=1),
649
dbus.String(u"object_path"):
650
dbus.ObjectPath(self.dbus_object_path,
651
variant_level=1)
652
}, signature=u"sv")
653
654
# IsStillValid - method
655
@dbus.service.method(_interface, out_signature=u"b")
656
def IsStillValid(self):
657
return self.still_valid()
658
659
888
# PropertyChanged - signal
660
@dbus.service.signal(_interface, signature=u"sv")
889
@dbus.service.signal(_interface, signature="sv")
661
890
def PropertyChanged(self, property, value):
662
891
"D-Bus signal"
663
892
pass
664
893
665
# ReceivedSecret - signal
894
# GotSecret - signal
666
895
@dbus.service.signal(_interface)
667
def ReceivedSecret(self):
668
"D-Bus signal"
896
def GotSecret(self):
897
"""D-Bus signal
898
Is sent after a successful transfer of secret from the Mandos
899
server to mandos-client
900
"""
669
901
pass
670
902
671
903
# Rejected - signal
672
@dbus.service.signal(_interface)
673
def Rejected(self):
904
@dbus.service.signal(_interface, signature="s")
905
def Rejected(self, reason):
674
906
"D-Bus signal"
675
907
pass
676
908
677
# SetChecker - method
678
@dbus.service.method(_interface, in_signature=u"s")
679
def SetChecker(self, checker):
680
"D-Bus setter method"
681
self.checker_command = checker
682
# Emit D-Bus signal
683
self.PropertyChanged(dbus.String(u"checker"),
684
dbus.String(self.checker_command,
685
variant_level=1))
686
687
# SetHost - method
688
@dbus.service.method(_interface, in_signature=u"s")
689
def SetHost(self, host):
690
"D-Bus setter method"
691
self.host = host
692
# Emit D-Bus signal
693
self.PropertyChanged(dbus.String(u"host"),
694
dbus.String(self.host, variant_level=1))
695
696
# SetInterval - method
697
@dbus.service.method(_interface, in_signature=u"t")
698
def SetInterval(self, milliseconds):
699
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
700
# Emit D-Bus signal
701
self.PropertyChanged(dbus.String(u"interval"),
702
(dbus.UInt64(self.interval_milliseconds(),
703
variant_level=1)))
704
705
# SetSecret - method
706
@dbus.service.method(_interface, in_signature=u"ay",
707
byte_arrays=True)
708
def SetSecret(self, secret):
709
"D-Bus setter method"
710
self.secret = str(secret)
711
712
# SetTimeout - method
713
@dbus.service.method(_interface, in_signature=u"t")
714
def SetTimeout(self, milliseconds):
715
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
716
# Emit D-Bus signal
717
self.PropertyChanged(dbus.String(u"timeout"),
718
(dbus.UInt64(self.timeout_milliseconds(),
719
variant_level=1)))
909
# NeedApproval - signal
910
@dbus.service.signal(_interface, signature="tb")
911
def NeedApproval(self, timeout, default):
912
"D-Bus signal"
913
return self.need_approval()
914
915
## Methods
916
917
# Approve - method
918
@dbus.service.method(_interface, in_signature="b")
919
def Approve(self, value):
920
self.approve(value)
921
922
# CheckedOK - method
923
@dbus.service.method(_interface)
924
def CheckedOK(self):
925
return self.checked_ok()
720
926
721
927
# Enable - method
722
928
@dbus.service.method(_interface)
741
947
def StopChecker(self):
742
948
self.stop_checker()
743
949
950
## Properties
951
952
# ApprovalPending - property
953
@dbus_service_property(_interface, signature="b", access="read")
954
def ApprovalPending_dbus_property(self):
955
return dbus.Boolean(bool(self.approvals_pending))
956
957
# ApprovedByDefault - property
958
@dbus_service_property(_interface, signature="b",
959
access="readwrite")
960
def ApprovedByDefault_dbus_property(self, value=None):
961
if value is None: # get
962
return dbus.Boolean(self.approved_by_default)
963
self.approved_by_default = bool(value)
964
# Emit D-Bus signal
965
self.PropertyChanged(dbus.String("ApprovedByDefault"),
966
dbus.Boolean(value, variant_level=1))
967
968
# ApprovalDelay - property
969
@dbus_service_property(_interface, signature="t",
970
access="readwrite")
971
def ApprovalDelay_dbus_property(self, value=None):
972
if value is None: # get
973
return dbus.UInt64(self.approval_delay_milliseconds())
974
self.approval_delay = datetime.timedelta(0, 0, 0, value)
975
# Emit D-Bus signal
976
self.PropertyChanged(dbus.String("ApprovalDelay"),
977
dbus.UInt64(value, variant_level=1))
978
979
# ApprovalDuration - property
980
@dbus_service_property(_interface, signature="t",
981
access="readwrite")
982
def ApprovalDuration_dbus_property(self, value=None):
983
if value is None: # get
984
return dbus.UInt64(self._timedelta_to_milliseconds(
985
self.approval_duration))
986
self.approval_duration = datetime.timedelta(0, 0, 0, value)
987
# Emit D-Bus signal
988
self.PropertyChanged(dbus.String("ApprovalDuration"),
989
dbus.UInt64(value, variant_level=1))
990
991
# Name - property
992
@dbus_service_property(_interface, signature="s", access="read")
993
def Name_dbus_property(self):
994
return dbus.String(self.name)
995
996
# Fingerprint - property
997
@dbus_service_property(_interface, signature="s", access="read")
998
def Fingerprint_dbus_property(self):
999
return dbus.String(self.fingerprint)
1000
1001
# Host - property
1002
@dbus_service_property(_interface, signature="s",
1003
access="readwrite")
1004
def Host_dbus_property(self, value=None):
1005
if value is None: # get
1006
return dbus.String(self.host)
1007
self.host = value
1008
# Emit D-Bus signal
1009
self.PropertyChanged(dbus.String("Host"),
1010
dbus.String(value, variant_level=1))
1011
1012
# Created - property
1013
@dbus_service_property(_interface, signature="s", access="read")
1014
def Created_dbus_property(self):
1015
return dbus.String(self._datetime_to_dbus(self.created))
1016
1017
# LastEnabled - property
1018
@dbus_service_property(_interface, signature="s", access="read")
1019
def LastEnabled_dbus_property(self):
1020
if self.last_enabled is None:
1021
return dbus.String("")
1022
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1023
1024
# Enabled - property
1025
@dbus_service_property(_interface, signature="b",
1026
access="readwrite")
1027
def Enabled_dbus_property(self, value=None):
1028
if value is None: # get
1029
return dbus.Boolean(self.enabled)
1030
if value:
1031
self.enable()
1032
else:
1033
self.disable()
1034
1035
# LastCheckedOK - property
1036
@dbus_service_property(_interface, signature="s",
1037
access="readwrite")
1038
def LastCheckedOK_dbus_property(self, value=None):
1039
if value is not None:
1040
self.checked_ok()
1041
return
1042
if self.last_checked_ok is None:
1043
return dbus.String("")
1044
return dbus.String(self._datetime_to_dbus(self
1045
.last_checked_ok))
1046
1047
# LastApprovalRequest - property
1048
@dbus_service_property(_interface, signature="s", access="read")
1049
def LastApprovalRequest_dbus_property(self):
1050
if self.last_approval_request is None:
1051
return dbus.String("")
1052
return dbus.String(self.
1053
_datetime_to_dbus(self
1054
.last_approval_request))
1055
1056
# Timeout - property
1057
@dbus_service_property(_interface, signature="t",
1058
access="readwrite")
1059
def Timeout_dbus_property(self, value=None):
1060
if value is None: # get
1061
return dbus.UInt64(self.timeout_milliseconds())
1062
self.timeout = datetime.timedelta(0, 0, 0, value)
1063
# Emit D-Bus signal
1064
self.PropertyChanged(dbus.String("Timeout"),
1065
dbus.UInt64(value, variant_level=1))
1066
if getattr(self, "disable_initiator_tag", None) is None:
1067
return
1068
# Reschedule timeout
1069
gobject.source_remove(self.disable_initiator_tag)
1070
self.disable_initiator_tag = None
1071
time_to_die = (self.
1072
_timedelta_to_milliseconds((self
1073
.last_checked_ok
1074
+ self.timeout)
1075
- datetime.datetime
1076
.utcnow()))
1077
if time_to_die <= 0:
1078
# The timeout has passed
1079
self.disable()
1080
else:
1081
self.disable_initiator_tag = (gobject.timeout_add
1082
(time_to_die, self.disable))
1083
1084
# Interval - property
1085
@dbus_service_property(_interface, signature="t",
1086
access="readwrite")
1087
def Interval_dbus_property(self, value=None):
1088
if value is None: # get
1089
return dbus.UInt64(self.interval_milliseconds())
1090
self.interval = datetime.timedelta(0, 0, 0, value)
1091
# Emit D-Bus signal
1092
self.PropertyChanged(dbus.String("Interval"),
1093
dbus.UInt64(value, variant_level=1))
1094
if getattr(self, "checker_initiator_tag", None) is None:
1095
return
1096
# Reschedule checker run
1097
gobject.source_remove(self.checker_initiator_tag)
1098
self.checker_initiator_tag = (gobject.timeout_add
1099
(value, self.start_checker))
1100
self.start_checker() # Start one now, too
1101
1102
# Checker - property
1103
@dbus_service_property(_interface, signature="s",
1104
access="readwrite")
1105
def Checker_dbus_property(self, value=None):
1106
if value is None: # get
1107
return dbus.String(self.checker_command)
1108
self.checker_command = value
1109
# Emit D-Bus signal
1110
self.PropertyChanged(dbus.String("Checker"),
1111
dbus.String(self.checker_command,
1112
variant_level=1))
1113
1114
# CheckerRunning - property
1115
@dbus_service_property(_interface, signature="b",
1116
access="readwrite")
1117
def CheckerRunning_dbus_property(self, value=None):
1118
if value is None: # get
1119
return dbus.Boolean(self.checker is not None)
1120
if value:
1121
self.start_checker()
1122
else:
1123
self.stop_checker()
1124
1125
# ObjectPath - property
1126
@dbus_service_property(_interface, signature="o", access="read")
1127
def ObjectPath_dbus_property(self):
1128
return self.dbus_object_path # is already a dbus.ObjectPath
1129
1130
# Secret = property
1131
@dbus_service_property(_interface, signature="ay",
1132
access="write", byte_arrays=True)
1133
def Secret_dbus_property(self, value):
1134
self.secret = str(value)
1135
744
1136
del _interface
745
1137
746
1138
1139
class ProxyClient(object):
1140
def __init__(self, child_pipe, fpr, address):
1141
self._pipe = child_pipe
1142
self._pipe.send(('init', fpr, address))
1143
if not self._pipe.recv():
1144
raise KeyError()
1145
1146
def __getattribute__(self, name):
1147
if(name == '_pipe'):
1148
return super(ProxyClient, self).__getattribute__(name)
1149
self._pipe.send(('getattr', name))
1150
data = self._pipe.recv()
1151
if data[0] == 'data':
1152
return data[1]
1153
if data[0] == 'function':
1154
def func(*args, **kwargs):
1155
self._pipe.send(('funcall', name, args, kwargs))
1156
return self._pipe.recv()[1]
1157
return func
1158
1159
def __setattr__(self, name, value):
1160
if(name == '_pipe'):
1161
return super(ProxyClient, self).__setattr__(name, value)
1162
self._pipe.send(('setattr', name, value))
1163
1164
747
1165
class ClientHandler(socketserver.BaseRequestHandler, object):
748
1166
"""A class to handle client connections.
749
1167
751
1169
Note: This will run in its own forked process."""
752
1170
753
1171
def handle(self):
754
logger.info(u"TCP connection from: %s",
755
unicode(self.client_address))
756
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
757
# Open IPC pipe to parent process
758
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1172
with contextlib.closing(self.server.child_pipe) as child_pipe:
1173
logger.info("TCP connection from: %s",
1174
unicode(self.client_address))
1175
logger.debug("Pipe FD: %d",
1176
self.server.child_pipe.fileno())
1177
759
1178
session = (gnutls.connection
760
1179
.ClientSession(self.request,
761
1180
gnutls.connection
762
1181
.X509Credentials()))
763
764
line = self.request.makefile().readline()
765
logger.debug(u"Protocol version: %r", line)
766
try:
767
if int(line.strip().split()[0]) > 1:
768
raise RuntimeError
769
except (ValueError, IndexError, RuntimeError), error:
770
logger.error(u"Unknown protocol version: %s", error)
771
return
772
1182
773
1183
# Note: gnutls.connection.X509Credentials is really a
774
1184
# generic GnuTLS certificate credentials object so long as
775
1185
# no X.509 keys are added to it. Therefore, we can use it
776
1186
# here despite using OpenPGP certificates.
777
778
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
779
# u"+AES-256-CBC", u"+SHA1",
780
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
781
# u"+DHE-DSS"))
1187
1188
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1189
# "+AES-256-CBC", "+SHA1",
1190
# "+COMP-NULL", "+CTYPE-OPENPGP",
1191
# "+DHE-DSS"))
782
1192
# Use a fallback default, since this MUST be set.
783
1193
priority = self.server.gnutls_priority
784
1194
if priority is None:
785
priority = u"NORMAL"
1195
priority = "NORMAL"
786
1196
(gnutls.library.functions
787
1197
.gnutls_priority_set_direct(session._c_object,
788
1198
priority, None))
789
1199
1200
# Start communication using the Mandos protocol
1201
# Get protocol number
1202
line = self.request.makefile().readline()
1203
logger.debug("Protocol version: %r", line)
1204
try:
1205
if int(line.strip().split()[0]) > 1:
1206
raise RuntimeError
1207
except (ValueError, IndexError, RuntimeError), error:
1208
logger.error("Unknown protocol version: %s", error)
1209
return
1210
1211
# Start GnuTLS connection
790
1212
try:
791
1213
session.handshake()
792
1214
except gnutls.errors.GNUTLSError, error:
793
logger.warning(u"Handshake failed: %s", error)
1215
logger.warning("Handshake failed: %s", error)
794
1216
# Do not run session.bye() here: the session is not
795
1217
# established. Just abandon the request.
796
1218
return
797
logger.debug(u"Handshake succeeded")
1219
logger.debug("Handshake succeeded")
1220
1221
approval_required = False
798
1222
try:
799
fpr = self.fingerprint(self.peer_certificate(session))
800
except (TypeError, gnutls.errors.GNUTLSError), error:
801
logger.warning(u"Bad certificate: %s", error)
802
session.bye()
803
return
804
logger.debug(u"Fingerprint: %s", fpr)
1223
try:
1224
fpr = self.fingerprint(self.peer_certificate
1225
(session))
1226
except (TypeError, gnutls.errors.GNUTLSError), error:
1227
logger.warning("Bad certificate: %s", error)
1228
return
1229
logger.debug("Fingerprint: %s", fpr)
1230
1231
try:
1232
client = ProxyClient(child_pipe, fpr,
1233
self.client_address)
1234
except KeyError:
1235
return
1236
1237
if client.approval_delay:
1238
delay = client.approval_delay
1239
client.approvals_pending += 1
1240
approval_required = True
1241
1242
while True:
1243
if not client.enabled:
1244
logger.warning("Client %s is disabled",
1245
client.name)
1246
if self.server.use_dbus:
1247
# Emit D-Bus signal
1248
client.Rejected("Disabled")
1249
return
1250
1251
if client._approved or not client.approval_delay:
1252
#We are approved or approval is disabled
1253
break
1254
elif client._approved is None:
1255
logger.info("Client %s needs approval",
1256
client.name)
1257
if self.server.use_dbus:
1258
# Emit D-Bus signal
1259
client.NeedApproval(
1260
client.approval_delay_milliseconds(),
1261
client.approved_by_default)
1262
else:
1263
logger.warning("Client %s was not approved",
1264
client.name)
1265
if self.server.use_dbus:
1266
# Emit D-Bus signal
1267
client.Rejected("Denied")
1268
return
1269
1270
#wait until timeout or approved
1271
#x = float(client._timedelta_to_milliseconds(delay))
1272
time = datetime.datetime.now()
1273
client.changedstate.acquire()
1274
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1275
client.changedstate.release()
1276
time2 = datetime.datetime.now()
1277
if (time2 - time) >= delay:
1278
if not client.approved_by_default:
1279
logger.warning("Client %s timed out while"
1280
" waiting for approval",
1281
client.name)
1282
if self.server.use_dbus:
1283
# Emit D-Bus signal
1284
client.Rejected("Approval timed out")
1285
return
1286
else:
1287
break
1288
else:
1289
delay -= time2 - time
1290
1291
sent_size = 0
1292
while sent_size < len(client.secret):
1293
try:
1294
sent = session.send(client.secret[sent_size:])
1295
except (gnutls.errors.GNUTLSError), error:
1296
logger.warning("gnutls send failed")
1297
return
1298
logger.debug("Sent: %d, remaining: %d",
1299
sent, len(client.secret)
1300
- (sent_size + sent))
1301
sent_size += sent
1302
1303
logger.info("Sending secret to %s", client.name)
1304
# bump the timeout as if seen
1305
client.checked_ok()
1306
if self.server.use_dbus:
1307
# Emit D-Bus signal
1308
client.GotSecret()
805
1309
806
for c in self.server.clients:
807
if c.fingerprint == fpr:
808
client = c
809
break
810
else:
811
ipc.write(u"NOTFOUND %s\n" % fpr)
812
session.bye()
813
return
814
# Have to check if client.still_valid(), since it is
815
# possible that the client timed out while establishing
816
# the GnuTLS session.
817
if not client.still_valid():
818
ipc.write(u"INVALID %s\n" % client.name)
819
session.bye()
820
return
821
ipc.write(u"SENDING %s\n" % client.name)
822
sent_size = 0
823
while sent_size < len(client.secret):
824
sent = session.send(client.secret[sent_size:])
825
logger.debug(u"Sent: %d, remaining: %d",
826
sent, len(client.secret)
827
- (sent_size + sent))
828
sent_size += sent
829
session.bye()
1310
finally:
1311
if approval_required:
1312
client.approvals_pending -= 1
1313
try:
1314
session.bye()
1315
except (gnutls.errors.GNUTLSError), error:
1316
logger.warning("GnuTLS bye failed")
830
1317
831
1318
@staticmethod
832
1319
def peer_certificate(session):
842
1329
.gnutls_certificate_get_peers
843
1330
(session._c_object, ctypes.byref(list_size)))
844
1331
if not bool(cert_list) and list_size.value != 0:
845
raise gnutls.errors.GNUTLSError(u"error getting peer"
846
u" certificate")
1332
raise gnutls.errors.GNUTLSError("error getting peer"
1333
" certificate")
847
1334
if list_size.value == 0:
848
1335
return None
849
1336
cert = cert_list[0]
875
1362
if crtverify.value != 0:
876
1363
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
877
1364
raise (gnutls.errors.CertificateSecurityError
878
(u"Verify failed"))
1365
("Verify failed"))
879
1366
# New buffer for the fingerprint
880
1367
buf = ctypes.create_string_buffer(20)
881
1368
buf_len = ctypes.c_size_t()
888
1375
# Convert the buffer to a Python bytestring
889
1376
fpr = ctypes.string_at(buf, buf_len.value)
890
1377
# Convert the bytestring to hexadecimal notation
891
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1378
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
892
1379
return hex_fpr
893
1380
894
1381
895
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
896
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1382
class MultiprocessingMixIn(object):
1383
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1384
def sub_process_main(self, request, address):
1385
try:
1386
self.finish_request(request, address)
1387
except:
1388
self.handle_error(request, address)
1389
self.close_request(request)
1390
1391
def process_request(self, request, address):
1392
"""Start a new process to process the request."""
1393
multiprocessing.Process(target = self.sub_process_main,
1394
args = (request, address)).start()
1395
1396
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1397
""" adds a pipe to the MixIn """
897
1398
def process_request(self, request, client_address):
898
1399
"""Overrides and wraps the original process_request().
899
1400
900
This function creates a new pipe in self.pipe
1401
This function creates a new pipe in self.pipe
901
1402
"""
902
self.pipe = os.pipe()
903
super(ForkingMixInWithPipe,
1403
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1404
1405
super(MultiprocessingMixInWithPipe,
904
1406
self).process_request(request, client_address)
905
os.close(self.pipe[1]) # close write end
906
self.add_pipe(self.pipe[0])
907
def add_pipe(self, pipe):
1407
self.child_pipe.close()
1408
self.add_pipe(parent_pipe)
1409
1410
def add_pipe(self, parent_pipe):
908
1411
"""Dummy function; override as necessary"""
909
os.close(pipe)
910
911
912
class IPv6_TCPServer(ForkingMixInWithPipe,
1412
raise NotImplementedError
1413
1414
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
913
1415
socketserver.TCPServer, object):
914
1416
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
915
1417
931
1433
bind to an address or port if they were not specified."""
932
1434
if self.interface is not None:
933
1435
if SO_BINDTODEVICE is None:
934
logger.error(u"SO_BINDTODEVICE does not exist;"
935
u" cannot bind to interface %s",
1436
logger.error("SO_BINDTODEVICE does not exist;"
1437
" cannot bind to interface %s",
936
1438
self.interface)
937
1439
else:
938
1440
try:
939
1441
self.socket.setsockopt(socket.SOL_SOCKET,
940
1442
SO_BINDTODEVICE,
941
1443
str(self.interface
942
+ u'\0'))
1444
+ '\0'))
943
1445
except socket.error, error:
944
1446
if error[0] == errno.EPERM:
945
logger.error(u"No permission to"
946
u" bind to interface %s",
1447
logger.error("No permission to"
1448
" bind to interface %s",
947
1449
self.interface)
948
1450
elif error[0] == errno.ENOPROTOOPT:
949
logger.error(u"SO_BINDTODEVICE not available;"
950
u" cannot bind to interface %s",
1451
logger.error("SO_BINDTODEVICE not available;"
1452
" cannot bind to interface %s",
951
1453
self.interface)
952
1454
else:
953
1455
raise
955
1457
if self.server_address[0] or self.server_address[1]:
956
1458
if not self.server_address[0]:
957
1459
if self.address_family == socket.AF_INET6:
958
any_address = u"::" # in6addr_any
1460
any_address = "::" # in6addr_any
959
1461
else:
960
1462
any_address = socket.INADDR_ANY
961
1463
self.server_address = (any_address,
979
1481
clients: set of Client objects
980
1482
gnutls_priority GnuTLS priority string
981
1483
use_dbus: Boolean; to emit D-Bus signals or not
982
clients: set of Client objects
983
gnutls_priority GnuTLS priority string
984
use_dbus: Boolean; to emit D-Bus signals or not
985
1484
986
1485
Assumes a gobject.MainLoop event loop.
987
1486
"""
990
1489
gnutls_priority=None, use_dbus=True):
991
1490
self.enabled = False
992
1491
self.clients = clients
1492
if self.clients is None:
1493
self.clients = set()
993
1494
self.use_dbus = use_dbus
994
1495
self.gnutls_priority = gnutls_priority
995
1496
IPv6_TCPServer.__init__(self, server_address,
1001
1502
return socketserver.TCPServer.server_activate(self)
1002
1503
def enable(self):
1003
1504
self.enabled = True
1004
def add_pipe(self, pipe):
1505
def add_pipe(self, parent_pipe):
1005
1506
# Call "handle_ipc" for both data and EOF events
1006
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1007
self.handle_ipc)
1008
def handle_ipc(self, source, condition, file_objects={}):
1507
gobject.io_add_watch(parent_pipe.fileno(),
1508
gobject.IO_IN | gobject.IO_HUP,
1509
functools.partial(self.handle_ipc,
1510
parent_pipe = parent_pipe))
1511
1512
def handle_ipc(self, source, condition, parent_pipe=None,
1513
client_object=None):
1009
1514
condition_names = {
1010
gobject.IO_IN: u"IN", # There is data to read.
1011
gobject.IO_OUT: u"OUT", # Data can be written (without
1515
gobject.IO_IN: "IN", # There is data to read.
1516
gobject.IO_OUT: "OUT", # Data can be written (without
1012
1517
# blocking).
1013
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1014
gobject.IO_ERR: u"ERR", # Error condition.
1015
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1518
gobject.IO_PRI: "PRI", # There is urgent data to read.
1519
gobject.IO_ERR: "ERR", # Error condition.
1520
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1016
1521
# broken, usually for pipes and
1017
1522
# sockets).
1018
1523
}
1020
1525
for cond, name in
1021
1526
condition_names.iteritems()
1022
1527
if cond & condition)
1023
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1024
conditions_string)
1025
1026
# Turn the pipe file descriptor into a Python file object
1027
if source not in file_objects:
1028
file_objects[source] = os.fdopen(source, u"r", 1)
1029
1030
# Read a line from the file object
1031
cmdline = file_objects[source].readline()
1032
if not cmdline: # Empty line means end of file
1033
# close the IPC pipe
1034
file_objects[source].close()
1035
del file_objects[source]
1036
1037
# Stop calling this function
1038
return False
1039
1040
logger.debug(u"IPC command: %r", cmdline)
1041
1042
# Parse and act on command
1043
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1044
1045
if cmd == u"NOTFOUND":
1046
logger.warning(u"Client not found for fingerprint: %s",
1047
args)
1048
if self.use_dbus:
1049
# Emit D-Bus signal
1050
mandos_dbus_service.ClientNotFound(args)
1051
elif cmd == u"INVALID":
1052
for client in self.clients:
1053
if client.name == args:
1054
logger.warning(u"Client %s is invalid", args)
1055
if self.use_dbus:
1056
# Emit D-Bus signal
1057
client.Rejected()
1058
break
1059
else:
1060
logger.error(u"Unknown client %s is invalid", args)
1061
elif cmd == u"SENDING":
1062
for client in self.clients:
1063
if client.name == args:
1064
logger.info(u"Sending secret to %s", client.name)
1065
client.checked_ok()
1066
if self.use_dbus:
1067
# Emit D-Bus signal
1068
client.ReceivedSecret()
1069
break
1070
else:
1071
logger.error(u"Sending secret to unknown client %s",
1072
args)
1073
else:
1074
logger.error(u"Unknown IPC command: %r", cmdline)
1075
1076
# Keep calling this function
1528
# error or the other end of multiprocessing.Pipe has closed
1529
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1530
return False
1531
1532
# Read a request from the child
1533
request = parent_pipe.recv()
1534
command = request[0]
1535
1536
if command == 'init':
1537
fpr = request[1]
1538
address = request[2]
1539
1540
for c in self.clients:
1541
if c.fingerprint == fpr:
1542
client = c
1543
break
1544
else:
1545
logger.warning("Client not found for fingerprint: %s, ad"
1546
"dress: %s", fpr, address)
1547
if self.use_dbus:
1548
# Emit D-Bus signal
1549
mandos_dbus_service.ClientNotFound(fpr, address[0])
1550
parent_pipe.send(False)
1551
return False
1552
1553
gobject.io_add_watch(parent_pipe.fileno(),
1554
gobject.IO_IN | gobject.IO_HUP,
1555
functools.partial(self.handle_ipc,
1556
parent_pipe = parent_pipe,
1557
client_object = client))
1558
parent_pipe.send(True)
1559
# remove the old hook in favor of the new above hook on same fileno
1560
return False
1561
if command == 'funcall':
1562
funcname = request[1]
1563
args = request[2]
1564
kwargs = request[3]
1565
1566
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1567
1568
if command == 'getattr':
1569
attrname = request[1]
1570
if callable(client_object.__getattribute__(attrname)):
1571
parent_pipe.send(('function',))
1572
else:
1573
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1574
1575
if command == 'setattr':
1576
attrname = request[1]
1577
value = request[2]
1578
setattr(client_object, attrname, value)
1579
1077
1580
return True
1078
1581
1079
1582
1080
1583
def string_to_delta(interval):
1081
1584
"""Parse a string and return a datetime.timedelta
1082
1585
1083
>>> string_to_delta(u'7d')
1586
>>> string_to_delta('7d')
1084
1587
datetime.timedelta(7)
1085
>>> string_to_delta(u'60s')
1588
>>> string_to_delta('60s')
1086
1589
datetime.timedelta(0, 60)
1087
>>> string_to_delta(u'60m')
1590
>>> string_to_delta('60m')
1088
1591
datetime.timedelta(0, 3600)
1089
>>> string_to_delta(u'24h')
1592
>>> string_to_delta('24h')
1090
1593
datetime.timedelta(1)
1091
>>> string_to_delta(u'1w')
1594
>>> string_to_delta('1w')
1092
1595
datetime.timedelta(7)
1093
>>> string_to_delta(u'5m 30s')
1596
>>> string_to_delta('5m 30s')
1094
1597
datetime.timedelta(0, 330)
1095
1598
"""
1096
1599
timevalue = datetime.timedelta(0)
1098
1601
try:
1099
1602
suffix = unicode(s[-1])
1100
1603
value = int(s[:-1])
1101
if suffix == u"d":
1604
if suffix == "d":
1102
1605
delta = datetime.timedelta(value)
1103
elif suffix == u"s":
1606
elif suffix == "s":
1104
1607
delta = datetime.timedelta(0, value)
1105
elif suffix == u"m":
1608
elif suffix == "m":
1106
1609
delta = datetime.timedelta(0, 0, 0, 0, value)
1107
elif suffix == u"h":
1610
elif suffix == "h":
1108
1611
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1109
elif suffix == u"w":
1612
elif suffix == "w":
1110
1613
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1111
1614
else:
1112
raise ValueError
1113
except (ValueError, IndexError):
1114
raise ValueError
1615
raise ValueError("Unknown suffix %r" % suffix)
1616
except (ValueError, IndexError), e:
1617
raise ValueError(*(e.args))
1115
1618
timevalue += delta
1116
1619
return timevalue
1117
1620
1123
1626
global if_nametoindex
1124
1627
try:
1125
1628
if_nametoindex = (ctypes.cdll.LoadLibrary
1126
(ctypes.util.find_library(u"c"))
1629
(ctypes.util.find_library("c"))
1127
1630
.if_nametoindex)
1128
1631
except (OSError, AttributeError):
1129
logger.warning(u"Doing if_nametoindex the hard way")
1632
logger.warning("Doing if_nametoindex the hard way")
1130
1633
def if_nametoindex(interface):
1131
1634
"Get an interface index the hard way, i.e. using fcntl()"
1132
1635
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1133
with closing(socket.socket()) as s:
1636
with contextlib.closing(socket.socket()) as s:
1134
1637
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1135
struct.pack(str(u"16s16x"),
1638
struct.pack(str("16s16x"),
1136
1639
interface))
1137
interface_index = struct.unpack(str(u"I"),
1640
interface_index = struct.unpack(str("I"),
1138
1641
ifreq[16:20])[0]
1139
1642
return interface_index
1140
1643
return if_nametoindex(interface)
1148
1651
sys.exit()
1149
1652
os.setsid()
1150
1653
if not nochdir:
1151
os.chdir(u"/")
1654
os.chdir("/")
1152
1655
if os.fork():
1153
1656
sys.exit()
1154
1657
if not noclose:
1156
1659
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1157
1660
if not stat.S_ISCHR(os.fstat(null).st_mode):
1158
1661
raise OSError(errno.ENODEV,
1159
u"/dev/null not a character device")
1662
"%s not a character device"
1663
% os.path.devnull)
1160
1664
os.dup2(null, sys.stdin.fileno())
1161
1665
os.dup2(null, sys.stdout.fileno())
1162
1666
os.dup2(null, sys.stderr.fileno())
1166
1670
1167
1671
def main():
1168
1672
1169
######################################################################
1673
##################################################################
1170
1674
# Parsing of options, both command line and config file
1171
1675
1172
1676
parser = optparse.OptionParser(version = "%%prog %s" % version)
1173
parser.add_option("-i", u"--interface", type=u"string",
1174
metavar="IF", help=u"Bind to interface IF")
1175
parser.add_option("-a", u"--address", type=u"string",
1176
help=u"Address to listen for requests on")
1177
parser.add_option("-p", u"--port", type=u"int",
1178
help=u"Port number to receive requests on")
1179
parser.add_option("--check", action=u"store_true",
1180
help=u"Run self-test")
1181
parser.add_option("--debug", action=u"store_true",
1182
help=u"Debug mode; run in foreground and log to"
1183
u" terminal")
1184
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1185
u" priority string (see GnuTLS documentation)")
1186
parser.add_option("--servicename", type=u"string",
1187
metavar=u"NAME", help=u"Zeroconf service name")
1188
parser.add_option("--configdir", type=u"string",
1189
default=u"/etc/mandos", metavar=u"DIR",
1190
help=u"Directory to search for configuration"
1191
u" files")
1192
parser.add_option("--no-dbus", action=u"store_false",
1193
dest=u"use_dbus", help=u"Do not provide D-Bus"
1194
u" system bus interface")
1195
parser.add_option("--no-ipv6", action=u"store_false",
1196
dest=u"use_ipv6", help=u"Do not use IPv6")
1677
parser.add_option("-i", "--interface", type="string",
1678
metavar="IF", help="Bind to interface IF")
1679
parser.add_option("-a", "--address", type="string",
1680
help="Address to listen for requests on")
1681
parser.add_option("-p", "--port", type="int",
1682
help="Port number to receive requests on")
1683
parser.add_option("--check", action="store_true",
1684
help="Run self-test")
1685
parser.add_option("--debug", action="store_true",
1686
help="Debug mode; run in foreground and log to"
1687
" terminal")
1688
parser.add_option("--debuglevel", type="string", metavar="LEVEL",
1689
help="Debug level for stdout output")
1690
parser.add_option("--priority", type="string", help="GnuTLS"
1691
" priority string (see GnuTLS documentation)")
1692
parser.add_option("--servicename", type="string",
1693
metavar="NAME", help="Zeroconf service name")
1694
parser.add_option("--configdir", type="string",
1695
default="/etc/mandos", metavar="DIR",
1696
help="Directory to search for configuration"
1697
" files")
1698
parser.add_option("--no-dbus", action="store_false",
1699
dest="use_dbus", help="Do not provide D-Bus"
1700
" system bus interface")
1701
parser.add_option("--no-ipv6", action="store_false",
1702
dest="use_ipv6", help="Do not use IPv6")
1197
1703
options = parser.parse_args()[0]
1198
1704
1199
1705
if options.check:
1202
1708
sys.exit()
1203
1709
1204
1710
# Default values for config file for server-global settings
1205
server_defaults = { u"interface": u"",
1206
u"address": u"",
1207
u"port": u"",
1208
u"debug": u"False",
1209
u"priority":
1210
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1211
u"servicename": u"Mandos",
1212
u"use_dbus": u"True",
1213
u"use_ipv6": u"True",
1711
server_defaults = { "interface": "",
1712
"address": "",
1713
"port": "",
1714
"debug": "False",
1715
"priority":
1716
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1717
"servicename": "Mandos",
1718
"use_dbus": "True",
1719
"use_ipv6": "True",
1720
"debuglevel": "",
1214
1721
}
1215
1722
1216
1723
# Parse config file for server-global settings
1217
1724
server_config = configparser.SafeConfigParser(server_defaults)
1218
1725
del server_defaults
1219
1726
server_config.read(os.path.join(options.configdir,
1220
u"mandos.conf"))
1727
"mandos.conf"))
1221
1728
# Convert the SafeConfigParser object to a dict
1222
1729
server_settings = server_config.defaults()
1223
1730
# Use the appropriate methods on the non-string config options
1224
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1225
server_settings[option] = server_config.getboolean(u"DEFAULT",
1731
for option in ("debug", "use_dbus", "use_ipv6"):
1732
server_settings[option] = server_config.getboolean("DEFAULT",
1226
1733
option)
1227
1734
if server_settings["port"]:
1228
server_settings["port"] = server_config.getint(u"DEFAULT",
1229
u"port")
1735
server_settings["port"] = server_config.getint("DEFAULT",
1736
"port")
1230
1737
del server_config
1231
1738
1232
1739
# Override the settings from the config file with command line
1233
1740
# options, if set.
1234
for option in (u"interface", u"address", u"port", u"debug",
1235
u"priority", u"servicename", u"configdir",
1236
u"use_dbus", u"use_ipv6"):
1741
for option in ("interface", "address", "port", "debug",
1742
"priority", "servicename", "configdir",
1743
"use_dbus", "use_ipv6", "debuglevel"):
1237
1744
value = getattr(options, option)
1238
1745
if value is not None:
1239
1746
server_settings[option] = value
1247
1754
##################################################################
1248
1755
1249
1756
# For convenience
1250
debug = server_settings[u"debug"]
1251
use_dbus = server_settings[u"use_dbus"]
1252
use_ipv6 = server_settings[u"use_ipv6"]
1253
1254
if not debug:
1255
syslogger.setLevel(logging.WARNING)
1256
console.setLevel(logging.WARNING)
1257
1258
if server_settings[u"servicename"] != u"Mandos":
1757
debug = server_settings["debug"]
1758
debuglevel = server_settings["debuglevel"]
1759
use_dbus = server_settings["use_dbus"]
1760
use_ipv6 = server_settings["use_ipv6"]
1761
1762
if server_settings["servicename"] != "Mandos":
1259
1763
syslogger.setFormatter(logging.Formatter
1260
(u'Mandos (%s) [%%(process)d]:'
1261
u' %%(levelname)s: %%(message)s'
1262
% server_settings[u"servicename"]))
1764
('Mandos (%s) [%%(process)d]:'
1765
' %%(levelname)s: %%(message)s'
1766
% server_settings["servicename"]))
1263
1767
1264
1768
# Parse config file with clients
1265
client_defaults = { u"timeout": u"1h",
1266
u"interval": u"5m",
1267
u"checker": u"fping -q -- %%(host)s",
1268
u"host": u"",
1769
client_defaults = { "timeout": "1h",
1770
"interval": "5m",
1771
"checker": "fping -q -- %%(host)s",
1772
"host": "",
1773
"approval_delay": "0s",
1774
"approval_duration": "1s",
1269
1775
}
1270
1776
client_config = configparser.SafeConfigParser(client_defaults)
1271
client_config.read(os.path.join(server_settings[u"configdir"],
1272
u"clients.conf"))
1777
client_config.read(os.path.join(server_settings["configdir"],
1778
"clients.conf"))
1273
1779
1274
1780
global mandos_dbus_service
1275
1781
mandos_dbus_service = None
1276
1782
1277
clients = set()
1278
tcp_server = MandosServer((server_settings[u"address"],
1279
server_settings[u"port"]),
1783
tcp_server = MandosServer((server_settings["address"],
1784
server_settings["port"]),
1280
1785
ClientHandler,
1281
interface=server_settings[u"interface"],
1786
interface=(server_settings["interface"]
1787
or None),
1282
1788
use_ipv6=use_ipv6,
1283
clients=clients,
1284
1789
gnutls_priority=
1285
server_settings[u"priority"],
1790
server_settings["priority"],
1286
1791
use_dbus=use_dbus)
1287
pidfilename = u"/var/run/mandos.pid"
1288
try:
1289
pidfile = open(pidfilename, u"w")
1290
except IOError:
1291
logger.error(u"Could not open file %r", pidfilename)
1792
if not debug:
1793
pidfilename = "/var/run/mandos.pid"
1794
try:
1795
pidfile = open(pidfilename, "w")
1796
except IOError:
1797
logger.error("Could not open file %r", pidfilename)
1292
1798
1293
1799
try:
1294
uid = pwd.getpwnam(u"_mandos").pw_uid
1295
gid = pwd.getpwnam(u"_mandos").pw_gid
1800
uid = pwd.getpwnam("_mandos").pw_uid
1801
gid = pwd.getpwnam("_mandos").pw_gid
1296
1802
except KeyError:
1297
1803
try:
1298
uid = pwd.getpwnam(u"mandos").pw_uid
1299
gid = pwd.getpwnam(u"mandos").pw_gid
1804
uid = pwd.getpwnam("mandos").pw_uid
1805
gid = pwd.getpwnam("mandos").pw_gid
1300
1806
except KeyError:
1301
1807
try:
1302
uid = pwd.getpwnam(u"nobody").pw_uid
1303
gid = pwd.getpwnam(u"nobody").pw_gid
1808
uid = pwd.getpwnam("nobody").pw_uid
1809
gid = pwd.getpwnam("nobody").pw_gid
1304
1810
except KeyError:
1305
1811
uid = 65534
1306
1812
gid = 65534
1311
1817
if error[0] != errno.EPERM:
1312
1818
raise error
1313
1819
1314
# Enable all possible GnuTLS debugging
1820
if not debug and not debuglevel:
1821
syslogger.setLevel(logging.WARNING)
1822
console.setLevel(logging.WARNING)
1823
if debuglevel:
1824
level = getattr(logging, debuglevel.upper())
1825
syslogger.setLevel(level)
1826
console.setLevel(level)
1827
1315
1828
if debug:
1829
# Enable all possible GnuTLS debugging
1830
1316
1831
# "Use a log level over 10 to enable all debugging options."
1317
1832
# - GnuTLS manual
1318
1833
gnutls.library.functions.gnutls_global_set_log_level(11)
1319
1834
1320
1835
@gnutls.library.types.gnutls_log_func
1321
1836
def debug_gnutls(level, string):
1322
logger.debug(u"GnuTLS: %s", string[:-1])
1837
logger.debug("GnuTLS: %s", string[:-1])
1323
1838
1324
1839
(gnutls.library.functions
1325
1840
.gnutls_global_set_log_function(debug_gnutls))
1841
1842
# Redirect stdin so all checkers get /dev/null
1843
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1844
os.dup2(null, sys.stdin.fileno())
1845
if null > 2:
1846
os.close(null)
1847
else:
1848
# No console logging
1849
logger.removeHandler(console)
1850
1851
# Need to fork before connecting to D-Bus
1852
if not debug:
1853
# Close all input and output, do double fork, etc.
1854
daemon()
1326
1855
1327
1856
global main_loop
1328
1857
# From the Avahi example code
1331
1860
bus = dbus.SystemBus()
1332
1861
# End of Avahi example code
1333
1862
if use_dbus:
1334
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1863
try:
1864
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1865
bus, do_not_queue=True)
1866
except dbus.exceptions.NameExistsException, e:
1867
logger.error(unicode(e) + ", disabling D-Bus")
1868
use_dbus = False
1869
server_settings["use_dbus"] = False
1870
tcp_server.use_dbus = False
1335
1871
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1336
service = AvahiService(name = server_settings[u"servicename"],
1337
servicetype = u"_mandos._tcp",
1872
service = AvahiService(name = server_settings["servicename"],
1873
servicetype = "_mandos._tcp",
1338
1874
protocol = protocol, bus = bus)
1339
1875
if server_settings["interface"]:
1340
1876
service.interface = (if_nametoindex
1341
(str(server_settings[u"interface"])))
1877
(str(server_settings["interface"])))
1878
1879
global multiprocessing_manager
1880
multiprocessing_manager = multiprocessing.Manager()
1342
1881
1343
1882
client_class = Client
1344
1883
if use_dbus:
1345
1884
client_class = functools.partial(ClientDBus, bus = bus)
1346
clients.update(set(
1885
def client_config_items(config, section):
1886
special_settings = {
1887
"approved_by_default":
1888
lambda: config.getboolean(section,
1889
"approved_by_default"),
1890
}
1891
for name, value in config.items(section):
1892
try:
1893
yield (name, special_settings[name]())
1894
except KeyError:
1895
yield (name, value)
1896
1897
tcp_server.clients.update(set(
1347
1898
client_class(name = section,
1348
config= dict(client_config.items(section)))
1899
config= dict(client_config_items(
1900
client_config, section)))
1349
1901
for section in client_config.sections()))
1350
if not clients:
1351
logger.warning(u"No clients defined")
1352
1353
if debug:
1354
# Redirect stdin so all checkers get /dev/null
1355
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1356
os.dup2(null, sys.stdin.fileno())
1357
if null > 2:
1358
os.close(null)
1359
else:
1360
# No console logging
1361
logger.removeHandler(console)
1362
# Close all input and output, do double fork, etc.
1363
daemon()
1364
1365
try:
1366
with closing(pidfile):
1367
pid = os.getpid()
1368
pidfile.write(str(pid) + "\n")
1369
del pidfile
1370
except IOError:
1371
logger.error(u"Could not write to file %r with PID %d",
1372
pidfilename, pid)
1373
except NameError:
1374
# "pidfile" was never created
1375
pass
1376
del pidfilename
1377
1378
def cleanup():
1379
"Cleanup function; run on exit"
1380
service.cleanup()
1902
if not tcp_server.clients:
1903
logger.warning("No clients defined")
1381
1904
1382
while clients:
1383
client = clients.pop()
1384
client.disable_hook = None
1385
client.disable()
1386
1387
atexit.register(cleanup)
1388
1389
1905
if not debug:
1906
try:
1907
with pidfile:
1908
pid = os.getpid()
1909
pidfile.write(str(pid) + "\n".encode("utf-8"))
1910
del pidfile
1911
except IOError:
1912
logger.error("Could not write to file %r with PID %d",
1913
pidfilename, pid)
1914
except NameError:
1915
# "pidfile" was never created
1916
pass
1917
del pidfilename
1918
1390
1919
signal.signal(signal.SIGINT, signal.SIG_IGN)
1920
1391
1921
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1392
1922
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1393
1923
1395
1925
class MandosDBusService(dbus.service.Object):
1396
1926
"""A D-Bus proxy object"""
1397
1927
def __init__(self):
1398
dbus.service.Object.__init__(self, bus, u"/")
1399
_interface = u"se.bsnet.fukt.Mandos"
1400
1401
@dbus.service.signal(_interface, signature=u"oa{sv}")
1402
def ClientAdded(self, objpath, properties):
1403
"D-Bus signal"
1404
pass
1405
1406
@dbus.service.signal(_interface, signature=u"s")
1407
def ClientNotFound(self, fingerprint):
1408
"D-Bus signal"
1409
pass
1410
1411
@dbus.service.signal(_interface, signature=u"os")
1928
dbus.service.Object.__init__(self, bus, "/")
1929
_interface = "se.bsnet.fukt.Mandos"
1930
1931
@dbus.service.signal(_interface, signature="o")
1932
def ClientAdded(self, objpath):
1933
"D-Bus signal"
1934
pass
1935
1936
@dbus.service.signal(_interface, signature="ss")
1937
def ClientNotFound(self, fingerprint, address):
1938
"D-Bus signal"
1939
pass
1940
1941
@dbus.service.signal(_interface, signature="os")
1412
1942
def ClientRemoved(self, objpath, name):
1413
1943
"D-Bus signal"
1414
1944
pass
1415
1945
1416
@dbus.service.method(_interface, out_signature=u"ao")
1946
@dbus.service.method(_interface, out_signature="ao")
1417
1947
def GetAllClients(self):
1418
1948
"D-Bus method"
1419
return dbus.Array(c.dbus_object_path for c in clients)
1949
return dbus.Array(c.dbus_object_path
1950
for c in tcp_server.clients)
1420
1951
1421
1952
@dbus.service.method(_interface,
1422
out_signature=u"a{oa{sv}}")
1953
out_signature="a{oa{sv}}")
1423
1954
def GetAllClientsWithProperties(self):
1424
1955
"D-Bus method"
1425
1956
return dbus.Dictionary(
1426
((c.dbus_object_path, c.GetAllProperties())
1427
for c in clients),
1428
signature=u"oa{sv}")
1957
((c.dbus_object_path, c.GetAll(""))
1958
for c in tcp_server.clients),
1959
signature="oa{sv}")
1429
1960
1430
@dbus.service.method(_interface, in_signature=u"o")
1961
@dbus.service.method(_interface, in_signature="o")
1431
1962
def RemoveClient(self, object_path):
1432
1963
"D-Bus method"
1433
for c in clients:
1964
for c in tcp_server.clients:
1434
1965
if c.dbus_object_path == object_path:
1435
clients.remove(c)
1966
tcp_server.clients.remove(c)
1436
1967
c.remove_from_connection()
1437
1968
# Don't signal anything except ClientRemoved
1438
c.disable(signal=False)
1969
c.disable(quiet=True)
1439
1970
# Emit D-Bus signal
1440
1971
self.ClientRemoved(object_path, c.name)
1441
1972
return
1442
raise KeyError
1973
raise KeyError(object_path)
1443
1974
1444
1975
del _interface
1445
1976
1446
1977
mandos_dbus_service = MandosDBusService()
1447
1978
1448
for client in clients:
1979
def cleanup():
1980
"Cleanup function; run on exit"
1981
service.cleanup()
1982
1983
while tcp_server.clients:
1984
client = tcp_server.clients.pop()
1985
if use_dbus:
1986
client.remove_from_connection()
1987
client.disable_hook = None
1988
# Don't signal anything except ClientRemoved
1989
client.disable(quiet=True)
1990
if use_dbus:
1991
# Emit D-Bus signal
1992
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1993
client.name)
1994
1995
atexit.register(cleanup)
1996
1997
for client in tcp_server.clients:
1449
1998
if use_dbus:
1450
1999
# Emit D-Bus signal
1451
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1452
client.GetAllProperties())
2000
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1453
2001
client.enable()
1454
2002
1455
2003
tcp_server.enable()
1458
2006
# Find out what port we got
1459
2007
service.port = tcp_server.socket.getsockname()[1]
1460
2008
if use_ipv6:
1461
logger.info(u"Now listening on address %r, port %d,"
2009
logger.info("Now listening on address %r, port %d,"
1462
2010
" flowinfo %d, scope_id %d"
1463
2011
% tcp_server.socket.getsockname())
1464
2012
else: # IPv4
1465
logger.info(u"Now listening on address %r, port %d"
2013
logger.info("Now listening on address %r, port %d"
1466
2014
% tcp_server.socket.getsockname())
1467
2015
1468
2016
#service.interface = tcp_server.socket.getsockname()[3]
1472
2020
try:
1473
2021
service.activate()
1474
2022
except dbus.exceptions.DBusException, error:
1475
logger.critical(u"DBusException: %s", error)
2023
logger.critical("DBusException: %s", error)
2024
cleanup()
1476
2025
sys.exit(1)
1477
2026
# End of Avahi example code
1478
2027
1481
2030
(tcp_server.handle_request
1482
2031
(*args[2:], **kwargs) or True))
1483
2032
1484
logger.debug(u"Starting main loop")
2033
logger.debug("Starting main loop")
1485
2034
main_loop.run()
1486
2035
except AvahiError, error:
1487
logger.critical(u"AvahiError: %s", error)
2036
logger.critical("AvahiError: %s", error)
2037
cleanup()
1488
2038
sys.exit(1)
1489
2039
except KeyboardInterrupt:
1490
2040
if debug:
1491
print >> sys.stderr
1492
logger.debug(u"Server received KeyboardInterrupt")
1493
logger.debug(u"Server exiting")
2041
print("", file=sys.stderr)
2042
logger.debug("Server received KeyboardInterrupt")
2043
logger.debug("Server exiting")
2044
# Must run before the D-Bus bus name gets deregistered
2045
cleanup()
1494
2046
1495
2047
if __name__ == '__main__':
1496
2048
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0