/mandos/trunk : revision 423

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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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#

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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, absolute_import, unicode_literals

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from __future__ import division, with_statement, absolute_import

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import SocketServer as socketserver

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import socket

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SO_BINDTODEVICE = None

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version = "1.2.3"

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version = "1.0.14"

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#logger = logging.getLogger('mandos')

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logger = logging.Logger('mandos')

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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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('Mandos [%(process)d]: %(levelname)s:'

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' %(message)s'))

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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('%(name)s [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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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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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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type: string; Example: '_mandos._tcp'.

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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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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 = "", host = "", max_renames = 32768,

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domain = u"", host = u"", 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("No suitable Zeroconf service name found"

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" after %i retries, exiting.",

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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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self.rename_count)

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raise AvahiServiceError("Too many renames")

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raise AvahiServiceError(u"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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logger.info(u"Changing Zeroconf service name to %r ...",

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self.name)

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syslogger.setFormatter(logging.Formatter

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('Mandos (%s) [%%(process)d]:'

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' %%(levelname)s: %%(message)s'

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(u'Mandos (%s) [%%(process)d]:'

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u' %%(levelname)s: %%(message)s'

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% self.name))

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self.remove()

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try:

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self.add()

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except dbus.exceptions.DBusException, error:

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logger.critical("DBusException: %s", error)

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logger.critical(u"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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self.group.connect_to_signal('StateChanged',

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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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logger.debug(u"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"""

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logger.debug("Avahi entry group state change: %i", state)

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logger.debug(u"Avahi entry group state change: %i", state)

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if state == avahi.ENTRY_GROUP_ESTABLISHED:

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logger.debug("Zeroconf service established.")

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logger.debug(u"Zeroconf service established.")

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elif state == avahi.ENTRY_GROUP_COLLISION:

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logger.info("Zeroconf service name collision.")

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logger.warning(u"Zeroconf service name collision.")

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self.rename()

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elif state == avahi.ENTRY_GROUP_FAILURE:

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logger.critical("Avahi: Error in group state changed %s",

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logger.critical(u"Avahi: Error in group state changed %s",

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unicode(error))

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raise AvahiGroupError("State changed: %s"

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raise AvahiGroupError(u"State changed: %s"

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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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logger.debug(u"Avahi server state change: %i", state)

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if state == avahi.SERVER_COLLISION:

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logger.error("Zeroconf server name collision")

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logger.error(u"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("StateChanged",

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self.server.connect_to_signal(u"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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_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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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 disabled

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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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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_callback_tag: a gobject event source tag, or None

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checker_command: string; External command which is run to check

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if client lives. %() expansions are done at

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checker_initiator_tag: a gobject event source tag, or None

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disable_initiator_tag: - '' -

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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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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

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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

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enabled: bool()

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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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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

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last_enabled: datetime.datetime(); (UTC)

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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

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until this client is disabled

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runtime_expansions: Allowed attributes for runtime expansion.

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approval_delay: datetime.timedelta(); Time to wait for approval

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_approved: bool(); 'None' if not yet approved/disapproved

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approval_duration: datetime.timedelta(); Duration of one approval

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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 _timedelta_to_milliseconds(td):

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"Convert a datetime.timedelta() to milliseconds"

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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("Creating client %r", self.name)

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logger.debug(u"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()

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# function

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self.fingerprint = (config["fingerprint"].upper()

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.replace(" ", ""))

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logger.debug(" Fingerprint: %s", self.fingerprint)

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if "secret" in config:

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self.secret = config["secret"].decode("base64")

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elif "secfile" in config:

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self.fingerprint = (config[u"fingerprint"].upper()

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.replace(u" ", u""))

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logger.debug(u" Fingerprint: %s", self.fingerprint)

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if u"secret" in config:

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self.secret = config[u"secret"].decode(u"base64")

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elif u"secfile" in config:

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with open(os.path.expanduser(os.path.expandvars

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(config["secfile"])),

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(config[u"secfile"])),

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"rb") as secfile:

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self.secret = secfile.read()

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else:

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raise TypeError("No secret or secfile for client %s"

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raise TypeError(u"No secret or secfile for client %s"

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% self.name)

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self.host = config.get("host", "")

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self.host = config.get(u"host", u"")

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self.created = datetime.datetime.utcnow()

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self.enabled = False

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self.last_approval_request = None

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self.last_enabled = None

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self.last_checked_ok = None

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self.timeout = string_to_delta(config["timeout"])

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self.interval = string_to_delta(config["interval"])

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self.timeout = string_to_delta(config[u"timeout"])

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self.interval = string_to_delta(config[u"interval"])

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self.disable_hook = disable_hook

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self.checker = None

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self.checker_initiator_tag = None

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self.disable_initiator_tag = None

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self.checker_callback_tag = None

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self.checker_command = config["checker"]

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self.checker_command = config[u"checker"]

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self.current_checker_command = None

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self.last_connect = None

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self._approved = None

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self.approved_by_default = config.get("approved_by_default",

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self.approved_by_default = config.get(u"approved_by_default",

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True)

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self.approvals_pending = 0

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self.approval_delay = string_to_delta(

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config["approval_delay"])

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config[u"approval_delay"])

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self.approval_duration = string_to_delta(

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config["approval_duration"])

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config[u"approval_duration"])

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self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())

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def send_changedstate(self):

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def enable(self):

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"""Start this client's checker and timeout hooks"""

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if getattr(self, "enabled", False):

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if getattr(self, u"enabled", False):

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# Already enabled

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return

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self.send_changedstate()

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if not quiet:

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self.send_changedstate()

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if not quiet:

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logger.info("Disabling client %s", self.name)

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if getattr(self, "disable_initiator_tag", False):

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logger.info(u"Disabling client %s", self.name)

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if getattr(self, u"disable_initiator_tag", False):

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gobject.source_remove(self.disable_initiator_tag)

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self.disable_initiator_tag = None

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if getattr(self, "checker_initiator_tag", False):

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if getattr(self, u"checker_initiator_tag", False):

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gobject.source_remove(self.checker_initiator_tag)

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self.checker_initiator_tag = None

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self.stop_checker()

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if os.WIFEXITED(condition):

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exitstatus = os.WEXITSTATUS(condition)

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if exitstatus == 0:

405

logger.info("Checker for %(name)s succeeded",

397

logger.info(u"Checker for %(name)s succeeded",

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vars(self))

407

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self.checked_ok()

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else:

409

logger.info("Checker for %(name)s failed",

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logger.info(u"Checker for %(name)s failed",

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vars(self))

411

403

else:

412

logger.warning("Checker for %(name)s crashed?",

404

logger.warning(u"Checker for %(name)s crashed?",

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405

vars(self))

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406

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def checked_ok(self):

424

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(self.timeout_milliseconds(),

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self.disable))

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418

427

def need_approval(self):

428

self.last_approval_request = datetime.datetime.utcnow()

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def start_checker(self):

431

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"""Start a new checker subprocess if one is not running.

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421

450

439

raise error

451

440

else:

452

441

if pid:

453

logger.warning("Checker was a zombie")

442

logger.warning(u"Checker was a zombie")

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gobject.source_remove(self.checker_callback_tag)

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self.checker_callback(pid, status,

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self.current_checker_command)

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450

command = self.checker_command % self.host

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451

except TypeError:

463

452

# Escape attributes for the shell

464

escaped_attrs = dict(

465

(attr,

466

re.escape(unicode(str(getattr(self, attr, "")),

467

errors=

468

'replace')))

469

for attr in

470

self.runtime_expansions)

471

453

escaped_attrs = dict((key,

454

re.escape(unicode(str(val),

455

errors=

456

u'replace')))

457

for key, val in

458

vars(self).iteritems())

472

459

try:

473

460

command = self.checker_command % escaped_attrs

474

461

except TypeError, error:

475

logger.error('Could not format string "%s":'

476

' %s', self.checker_command, error)

462

logger.error(u'Could not format string "%s":'

463

u' %s', self.checker_command, error)

477

464

return True # Try again later

478

465

self.current_checker_command = command

479

466

try:

480

logger.info("Starting checker %r for %s",

467

logger.info(u"Starting checker %r for %s",

481

468

command, self.name)

482

469

# We don't need to redirect stdout and stderr, since

483

470

# in normal mode, that is already done by daemon(),

485

472

# always replaced by /dev/null.)

486

473

self.checker = subprocess.Popen(command,

487

474

close_fds=True,

488

shell=True, cwd="/")

475

shell=True, cwd=u"/")

489

476

self.checker_callback_tag = (gobject.child_watch_add

490

477

(self.checker.pid,

491

478

self.checker_callback,

497

484

gobject.source_remove(self.checker_callback_tag)

498

485

self.checker_callback(pid, status, command)

499

486

except OSError, error:

500

logger.error("Failed to start subprocess: %s",

487

logger.error(u"Failed to start subprocess: %s",

501

488

error)

502

489

# Re-run this periodically if run by gobject.timeout_add

503

490

return True

507

494

if self.checker_callback_tag:

508

495

gobject.source_remove(self.checker_callback_tag)

509

496

self.checker_callback_tag = None

510

if getattr(self, "checker", None) is None:

497

if getattr(self, u"checker", None) is None:

511

498

return

512

logger.debug("Stopping checker for %(name)s", vars(self))

499

logger.debug(u"Stopping checker for %(name)s", vars(self))

513

500

try:

514

501

os.kill(self.checker.pid, signal.SIGTERM)

515

502

#time.sleep(0.5)

520

507

raise

521

508

self.checker = None

522

509

523

def dbus_service_property(dbus_interface, signature="v",

524

access="readwrite", byte_arrays=False):

510

def dbus_service_property(dbus_interface, signature=u"v",

511

access=u"readwrite", byte_arrays=False):

525

512

"""Decorators for marking methods of a DBusObjectWithProperties to

526

513

become properties on the D-Bus.

527

514

534

521

"""

535

522

# Encoding deeply encoded byte arrays is not supported yet by the

536

523

# "Set" method, so we fail early here:

537

if byte_arrays and signature != "ay":

538

raise ValueError("Byte arrays not supported for non-'ay'"

539

" signature %r" % signature)

524

if byte_arrays and signature != u"ay":

525

raise ValueError(u"Byte arrays not supported for non-'ay'"

526

u" signature %r" % signature)

540

527

def decorator(func):

541

528

func._dbus_is_property = True

542

529

func._dbus_interface = dbus_interface

543

530

func._dbus_signature = signature

544

531

func._dbus_access = access

545

532

func._dbus_name = func.__name__

546

if func._dbus_name.endswith("_dbus_property"):

533

if func._dbus_name.endswith(u"_dbus_property"):

547

534

func._dbus_name = func._dbus_name[:-14]

548

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

535

func._dbus_get_args_options = {u'byte_arrays': byte_arrays }

549

536

return func

550

537

return decorator

551

538

579

566

580

567

@staticmethod

581

568

def _is_dbus_property(obj):

582

return getattr(obj, "_dbus_is_property", False)

569

return getattr(obj, u"_dbus_is_property", False)

583

570

584

571

def _get_all_dbus_properties(self):

585

572

"""Returns a generator of (name, attribute) pairs

593

580

property with the specified name and interface.

594

581

"""

595

582

for name in (property_name,

596

property_name + "_dbus_property"):

583

property_name + u"_dbus_property"):

597

584

prop = getattr(self, name, None)

598

585

if (prop is None

599

586

or not self._is_dbus_property(prop)

603

590

continue

604

591

return prop

605

592

# No such property

606

raise DBusPropertyNotFound(self.dbus_object_path + ":"

607

+ interface_name + "."

593

raise DBusPropertyNotFound(self.dbus_object_path + u":"

594

+ interface_name + u"."

608

595

+ property_name)

609

596

610

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",

611

out_signature="v")

597

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",

598

out_signature=u"v")

612

599

def Get(self, interface_name, property_name):

613

600

"""Standard D-Bus property Get() method, see D-Bus standard.

614

601

"""

615

602

prop = self._get_dbus_property(interface_name, property_name)

616

if prop._dbus_access == "write":

603

if prop._dbus_access == u"write":

617

604

raise DBusPropertyAccessException(property_name)

618

605

value = prop()

619

if not hasattr(value, "variant_level"):

606

if not hasattr(value, u"variant_level"):

620

607

return value

621

608

return type(value)(value, variant_level=value.variant_level+1)

622

609

623

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")

610

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")

624

611

def Set(self, interface_name, property_name, value):

625

612

"""Standard D-Bus property Set() method, see D-Bus standard.

626

613

"""

627

614

prop = self._get_dbus_property(interface_name, property_name)

628

if prop._dbus_access == "read":

615

if prop._dbus_access == u"read":

629

616

raise DBusPropertyAccessException(property_name)

630

if prop._dbus_get_args_options["byte_arrays"]:

617

if prop._dbus_get_args_options[u"byte_arrays"]:

631

618

# The byte_arrays option is not supported yet on

632

619

# signatures other than "ay".

633

if prop._dbus_signature != "ay":

620

if prop._dbus_signature != u"ay":

634

621

raise ValueError

635

622

value = dbus.ByteArray(''.join(unichr(byte)

636

623

for byte in value))

637

624

prop(value)

638

625

639

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",

640

out_signature="a{sv}")

626

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",

627

out_signature=u"a{sv}")

641

628

def GetAll(self, interface_name):

642

629

"""Standard D-Bus property GetAll() method, see D-Bus

643

630

standard.

651

638

# Interface non-empty but did not match

652

639

continue

653

640

# Ignore write-only properties

654

if prop._dbus_access == "write":

641

if prop._dbus_access == u"write":

655

642

continue

656

643

value = prop()

657

if not hasattr(value, "variant_level"):

644

if not hasattr(value, u"variant_level"):

658

645

all[name] = value

659

646

continue

660

647

all[name] = type(value)(value, variant_level=

661

648

value.variant_level+1)

662

return dbus.Dictionary(all, signature="sv")

649

return dbus.Dictionary(all, signature=u"sv")

663

650

664

651

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

665

out_signature="s",

652

out_signature=u"s",

666

653

path_keyword='object_path',

667

654

connection_keyword='connection')

668

655

def Introspect(self, object_path, connection):

673

660

try:

674

661

document = xml.dom.minidom.parseString(xmlstring)

675

662

def make_tag(document, name, prop):

676

e = document.createElement("property")

677

e.setAttribute("name", name)

678

e.setAttribute("type", prop._dbus_signature)

679

e.setAttribute("access", prop._dbus_access)

663

e = document.createElement(u"property")

664

e.setAttribute(u"name", name)

665

e.setAttribute(u"type", prop._dbus_signature)

666

e.setAttribute(u"access", prop._dbus_access)

680

667

return e

681

for if_tag in document.getElementsByTagName("interface"):

668

for if_tag in document.getElementsByTagName(u"interface"):

682

669

for tag in (make_tag(document, name, prop)

683

670

for name, prop

684

671

in self._get_all_dbus_properties()

685

672

if prop._dbus_interface

686

== if_tag.getAttribute("name")):

673

== if_tag.getAttribute(u"name")):

687

674

if_tag.appendChild(tag)

688

675

# Add the names to the return values for the

689

676

# "org.freedesktop.DBus.Properties" methods

690

if (if_tag.getAttribute("name")

691

== "org.freedesktop.DBus.Properties"):

692

for cn in if_tag.getElementsByTagName("method"):

693

if cn.getAttribute("name") == "Get":

694

for arg in cn.getElementsByTagName("arg"):

695

if (arg.getAttribute("direction")

696

== "out"):

697

arg.setAttribute("name", "value")

698

elif cn.getAttribute("name") == "GetAll":

699

for arg in cn.getElementsByTagName("arg"):

700

if (arg.getAttribute("direction")

701

== "out"):

702

arg.setAttribute("name", "props")

703

xmlstring = document.toxml("utf-8")

677

if (if_tag.getAttribute(u"name")

678

== u"org.freedesktop.DBus.Properties"):

679

for cn in if_tag.getElementsByTagName(u"method"):

680

if cn.getAttribute(u"name") == u"Get":

681

for arg in cn.getElementsByTagName(u"arg"):

682

if (arg.getAttribute(u"direction")

683

== u"out"):

684

arg.setAttribute(u"name", u"value")

685

elif cn.getAttribute(u"name") == u"GetAll":

686

for arg in cn.getElementsByTagName(u"arg"):

687

if (arg.getAttribute(u"direction")

688

== u"out"):

689

arg.setAttribute(u"name", u"props")

690

xmlstring = document.toxml(u"utf-8")

704

691

document.unlink()

705

692

except (AttributeError, xml.dom.DOMException,

706

693

xml.parsers.expat.ExpatError), error:

707

logger.error("Failed to override Introspection method",

694

logger.error(u"Failed to override Introspection method",

708

695

error)

709

696

return xmlstring

710

697

716

703

dbus_object_path: dbus.ObjectPath

717

704

bus: dbus.SystemBus()

718

705

"""

719

720

runtime_expansions = (Client.runtime_expansions

721

+ ("dbus_object_path",))

722

723

706

# dbus.service.Object doesn't use super(), so we can't either.

724

707

725

708

def __init__(self, bus = None, *args, **kwargs):

728

711

Client.__init__(self, *args, **kwargs)

729

712

# Only now, when this client is initialized, can it show up on

730

713

# the D-Bus

731

client_object_name = unicode(self.name).translate(

732

{ord("."): ord("_"),

733

ord("-"): ord("_")})

734

714

self.dbus_object_path = (dbus.ObjectPath

735

("/clients/" + client_object_name))

715

(u"/clients/"

716

+ self.name.replace(u".", u"_")))

736

717

DBusObjectWithProperties.__init__(self, self.bus,

737

718

self.dbus_object_path)

738

719

745

726

if (hasattr(self, "dbus_object_path")

746

727

and bval is not bool(old_value)):

747

728

dbus_bool = dbus.Boolean(bval, variant_level=1)

748

self.PropertyChanged(dbus.String("ApprovalPending"),

729

self.PropertyChanged(dbus.String(u"ApprovalPending"),

749

730

dbus_bool)

750

731

751

732

approvals_pending = property(_get_approvals_pending,

759

740

variant_level=variant_level)

760

741

761

742

def enable(self):

762

oldstate = getattr(self, "enabled", False)

743

oldstate = getattr(self, u"enabled", False)

763

744

r = Client.enable(self)

764

745

if oldstate != self.enabled:

765

746

# Emit D-Bus signals

766

self.PropertyChanged(dbus.String("Enabled"),

747

self.PropertyChanged(dbus.String(u"Enabled"),

767

748

dbus.Boolean(True, variant_level=1))

768

749

self.PropertyChanged(

769

dbus.String("LastEnabled"),

750

dbus.String(u"LastEnabled"),

770

751

self._datetime_to_dbus(self.last_enabled,

771

752

variant_level=1))

772

753

return r

773

754

774

755

def disable(self, quiet = False):

775

oldstate = getattr(self, "enabled", False)

756

oldstate = getattr(self, u"enabled", False)

776

757

r = Client.disable(self, quiet=quiet)

777

758

if not quiet and oldstate != self.enabled:

778

759

# Emit D-Bus signal

779

self.PropertyChanged(dbus.String("Enabled"),

760

self.PropertyChanged(dbus.String(u"Enabled"),

780

761

dbus.Boolean(False, variant_level=1))

781

762

return r

782

763

785

766

self.remove_from_connection()

786

767

except LookupError:

787

768

pass

788

if hasattr(DBusObjectWithProperties, "__del__"):

769

if hasattr(DBusObjectWithProperties, u"__del__"):

789

770

DBusObjectWithProperties.__del__(self, *args, **kwargs)

790

771

Client.__del__(self, *args, **kwargs)

791

772

794

775

self.checker_callback_tag = None

795

776

self.checker = None

796

777

# Emit D-Bus signal

797

self.PropertyChanged(dbus.String("CheckerRunning"),

778

self.PropertyChanged(dbus.String(u"CheckerRunning"),

798

779

dbus.Boolean(False, variant_level=1))

799

780

if os.WIFEXITED(condition):

800

781

exitstatus = os.WEXITSTATUS(condition)

815

796

r = Client.checked_ok(self, *args, **kwargs)

816

797

# Emit D-Bus signal

817

798

self.PropertyChanged(

818

dbus.String("LastCheckedOK"),

799

dbus.String(u"LastCheckedOK"),

819

800

(self._datetime_to_dbus(self.last_checked_ok,

820

801

variant_level=1)))

821

802

return r

822

803

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("LastApprovalRequest"),

828

(self._datetime_to_dbus(self.last_approval_request,

829

variant_level=1)))

830

return r

831

832

804

def start_checker(self, *args, **kwargs):

833

805

old_checker = self.checker

834

806

if self.checker is not None:

842

814

# Emit D-Bus signal

843

815

self.CheckerStarted(self.current_checker_command)

844

816

self.PropertyChanged(

845

dbus.String("CheckerRunning"),

817

dbus.String(u"CheckerRunning"),

846

818

dbus.Boolean(True, variant_level=1))

847

819

return r

848

820

849

821

def stop_checker(self, *args, **kwargs):

850

old_checker = getattr(self, "checker", None)

822

old_checker = getattr(self, u"checker", None)

851

823

r = Client.stop_checker(self, *args, **kwargs)

852

824

if (old_checker is not None

853

and getattr(self, "checker", None) is None):

854

self.PropertyChanged(dbus.String("CheckerRunning"),

825

and getattr(self, u"checker", None) is None):

826

self.PropertyChanged(dbus.String(u"CheckerRunning"),

855

827

dbus.Boolean(False, variant_level=1))

856

828

return r

857

829

868

840

869

841

870

842

## D-Bus methods, signals & properties

871

_interface = "se.bsnet.fukt.Mandos.Client"

843

_interface = u"se.bsnet.fukt.Mandos.Client"

872

844

873

845

## Signals

874

846

875

847

# CheckerCompleted - signal

876

@dbus.service.signal(_interface, signature="nxs")

848

@dbus.service.signal(_interface, signature=u"nxs")

877

849

def CheckerCompleted(self, exitcode, waitstatus, command):

878

850

"D-Bus signal"

879

851

pass

880

852

881

853

# CheckerStarted - signal

882

@dbus.service.signal(_interface, signature="s")

854

@dbus.service.signal(_interface, signature=u"s")

883

855

def CheckerStarted(self, command):

884

856

"D-Bus signal"

885

857

pass

886

858

887

859

# PropertyChanged - signal

888

@dbus.service.signal(_interface, signature="sv")

860

@dbus.service.signal(_interface, signature=u"sv")

889

861

def PropertyChanged(self, property, value):

890

862

"D-Bus signal"

891

863

pass

900

872

pass

901

873

902

874

# Rejected - signal

903

@dbus.service.signal(_interface, signature="s")

875

@dbus.service.signal(_interface, signature=u"s")

904

876

def Rejected(self, reason):

905

877

"D-Bus signal"

906

878

pass

907

879

908

880

# NeedApproval - signal

909

@dbus.service.signal(_interface, signature="tb")

881

@dbus.service.signal(_interface, signature=u"tb")

910

882

def NeedApproval(self, timeout, default):

911

883

"D-Bus signal"

912

return self.need_approval()

884

pass

913

885

914

886

## Methods

915

887

916

888

# Approve - method

917

@dbus.service.method(_interface, in_signature="b")

889

@dbus.service.method(_interface, in_signature=u"b")

918

890

def Approve(self, value):

919

891

self.approve(value)

920

892

921

893

# CheckedOK - method

922

894

@dbus.service.method(_interface)

923

895

def CheckedOK(self):

949

921

## Properties

950

922

951

923

# ApprovalPending - property

952

@dbus_service_property(_interface, signature="b", access="read")

924

@dbus_service_property(_interface, signature=u"b", access=u"read")

953

925

def ApprovalPending_dbus_property(self):

954

926

return dbus.Boolean(bool(self.approvals_pending))

955

927

956

928

# ApprovedByDefault - property

957

@dbus_service_property(_interface, signature="b",

958

access="readwrite")

929

@dbus_service_property(_interface, signature=u"b",

930

access=u"readwrite")

959

931

def ApprovedByDefault_dbus_property(self, value=None):

960

932

if value is None: # get

961

933

return dbus.Boolean(self.approved_by_default)

962

934

self.approved_by_default = bool(value)

963

935

# Emit D-Bus signal

964

self.PropertyChanged(dbus.String("ApprovedByDefault"),

936

self.PropertyChanged(dbus.String(u"ApprovedByDefault"),

965

937

dbus.Boolean(value, variant_level=1))

966

938

967

939

# ApprovalDelay - property

968

@dbus_service_property(_interface, signature="t",

969

access="readwrite")

940

@dbus_service_property(_interface, signature=u"t",

941

access=u"readwrite")

970

942

def ApprovalDelay_dbus_property(self, value=None):

971

943

if value is None: # get

972

944

return dbus.UInt64(self.approval_delay_milliseconds())

973

945

self.approval_delay = datetime.timedelta(0, 0, 0, value)

974

946

# Emit D-Bus signal

975

self.PropertyChanged(dbus.String("ApprovalDelay"),

947

self.PropertyChanged(dbus.String(u"ApprovalDelay"),

976

948

dbus.UInt64(value, variant_level=1))

977

949

978

950

# ApprovalDuration - property

979

@dbus_service_property(_interface, signature="t",

980

access="readwrite")

951

@dbus_service_property(_interface, signature=u"t",

952

access=u"readwrite")

981

953

def ApprovalDuration_dbus_property(self, value=None):

982

954

if value is None: # get

983

955

return dbus.UInt64(self._timedelta_to_milliseconds(

984

956

self.approval_duration))

985

957

self.approval_duration = datetime.timedelta(0, 0, 0, value)

986

958

# Emit D-Bus signal

987

self.PropertyChanged(dbus.String("ApprovalDuration"),

959

self.PropertyChanged(dbus.String(u"ApprovalDuration"),

988

960

dbus.UInt64(value, variant_level=1))

989

961

990

962

# Name - property

991

@dbus_service_property(_interface, signature="s", access="read")

963

@dbus_service_property(_interface, signature=u"s", access=u"read")

992

964

def Name_dbus_property(self):

993

965

return dbus.String(self.name)

994

966

995

967

# Fingerprint - property

996

@dbus_service_property(_interface, signature="s", access="read")

968

@dbus_service_property(_interface, signature=u"s", access=u"read")

997

969

def Fingerprint_dbus_property(self):

998

970

return dbus.String(self.fingerprint)

999

971

1000

972

# Host - property

1001

@dbus_service_property(_interface, signature="s",

1002

access="readwrite")

973

@dbus_service_property(_interface, signature=u"s",

974

access=u"readwrite")

1003

975

def Host_dbus_property(self, value=None):

1004

976

if value is None: # get

1005

977

return dbus.String(self.host)

1006

978

self.host = value

1007

979

# Emit D-Bus signal

1008

self.PropertyChanged(dbus.String("Host"),

980

self.PropertyChanged(dbus.String(u"Host"),

1009

981

dbus.String(value, variant_level=1))

1010

982

1011

983

# Created - property

1012

@dbus_service_property(_interface, signature="s", access="read")

984

@dbus_service_property(_interface, signature=u"s", access=u"read")

1013

985

def Created_dbus_property(self):

1014

986

return dbus.String(self._datetime_to_dbus(self.created))

1015

987

1016

988

# LastEnabled - property

1017

@dbus_service_property(_interface, signature="s", access="read")

989

@dbus_service_property(_interface, signature=u"s", access=u"read")

1018

990

def LastEnabled_dbus_property(self):

1019

991

if self.last_enabled is None:

1020

return dbus.String("")

992

return dbus.String(u"")

1021

993

return dbus.String(self._datetime_to_dbus(self.last_enabled))

1022

994

1023

995

# Enabled - property

1024

@dbus_service_property(_interface, signature="b",

1025

access="readwrite")

996

@dbus_service_property(_interface, signature=u"b",

997

access=u"readwrite")

1026

998

def Enabled_dbus_property(self, value=None):

1027

999

if value is None: # get

1028

1000

return dbus.Boolean(self.enabled)

1032

1004

self.disable()

1033

1005

1034

1006

# LastCheckedOK - property

1035

@dbus_service_property(_interface, signature="s",

1036

access="readwrite")

1007

@dbus_service_property(_interface, signature=u"s",

1008

access=u"readwrite")

1037

1009

def LastCheckedOK_dbus_property(self, value=None):

1038

1010

if value is not None:

1039

1011

self.checked_ok()

1040

1012

return

1041

1013

if self.last_checked_ok is None:

1042

return dbus.String("")

1014

return dbus.String(u"")

1043

1015

return dbus.String(self._datetime_to_dbus(self

1044

1016

.last_checked_ok))

1045

1017

1046

# LastApprovalRequest - property

1047

@dbus_service_property(_interface, signature="s", access="read")

1048

def LastApprovalRequest_dbus_property(self):

1049

if self.last_approval_request is None:

1050

return dbus.String("")

1051

return dbus.String(self.

1052

_datetime_to_dbus(self

1053

.last_approval_request))

1054

1055

1018

# Timeout - property

1056

@dbus_service_property(_interface, signature="t",

1057

access="readwrite")

1019

@dbus_service_property(_interface, signature=u"t",

1020

access=u"readwrite")

1058

1021

def Timeout_dbus_property(self, value=None):

1059

1022

if value is None: # get

1060

1023

return dbus.UInt64(self.timeout_milliseconds())

1061

1024

self.timeout = datetime.timedelta(0, 0, 0, value)

1062

1025

# Emit D-Bus signal

1063

self.PropertyChanged(dbus.String("Timeout"),

1026

self.PropertyChanged(dbus.String(u"Timeout"),

1064

1027

dbus.UInt64(value, variant_level=1))

1065

if getattr(self, "disable_initiator_tag", None) is None:

1028

if getattr(self, u"disable_initiator_tag", None) is None:

1066

1029

return

1067

1030

# Reschedule timeout

1068

1031

gobject.source_remove(self.disable_initiator_tag)

1081

1044

(time_to_die, self.disable))

1082

1045

1083

1046

# Interval - property

1084

@dbus_service_property(_interface, signature="t",

1085

access="readwrite")

1047

@dbus_service_property(_interface, signature=u"t",

1048

access=u"readwrite")

1086

1049

def Interval_dbus_property(self, value=None):

1087

1050

if value is None: # get

1088

1051

return dbus.UInt64(self.interval_milliseconds())

1089

1052

self.interval = datetime.timedelta(0, 0, 0, value)

1090

1053

# Emit D-Bus signal

1091

self.PropertyChanged(dbus.String("Interval"),

1054

self.PropertyChanged(dbus.String(u"Interval"),

1092

1055

dbus.UInt64(value, variant_level=1))

1093

if getattr(self, "checker_initiator_tag", None) is None:

1056

if getattr(self, u"checker_initiator_tag", None) is None:

1094

1057

return

1095

1058

# Reschedule checker run

1096

1059

gobject.source_remove(self.checker_initiator_tag)

1099

1062

self.start_checker() # Start one now, too

1100

1063

1101

1064

# Checker - property

1102

@dbus_service_property(_interface, signature="s",

1103

access="readwrite")

1065

@dbus_service_property(_interface, signature=u"s",

1066

access=u"readwrite")

1104

1067

def Checker_dbus_property(self, value=None):

1105

1068

if value is None: # get

1106

1069

return dbus.String(self.checker_command)

1107

1070

self.checker_command = value

1108

1071

# Emit D-Bus signal

1109

self.PropertyChanged(dbus.String("Checker"),

1072

self.PropertyChanged(dbus.String(u"Checker"),

1110

1073

dbus.String(self.checker_command,

1111

1074

variant_level=1))

1112

1075

1113

1076

# CheckerRunning - property

1114

@dbus_service_property(_interface, signature="b",

1115

access="readwrite")

1077

@dbus_service_property(_interface, signature=u"b",

1078

access=u"readwrite")

1116

1079

def CheckerRunning_dbus_property(self, value=None):

1117

1080

if value is None: # get

1118

1081

return dbus.Boolean(self.checker is not None)

1122

1085

self.stop_checker()

1123

1086

1124

1087

# ObjectPath - property

1125

@dbus_service_property(_interface, signature="o", access="read")

1088

@dbus_service_property(_interface, signature=u"o", access=u"read")

1126

1089

def ObjectPath_dbus_property(self):

1127

1090

return self.dbus_object_path # is already a dbus.ObjectPath

1128

1091

1129

1092

# Secret = property

1130

@dbus_service_property(_interface, signature="ay",

1131

access="write", byte_arrays=True)

1093

@dbus_service_property(_interface, signature=u"ay",

1094

access=u"write", byte_arrays=True)

1132

1095

def Secret_dbus_property(self, value):

1133

1096

self.secret = str(value)

1134

1097

1169

1132

1170

1133

def handle(self):

1171

1134

with contextlib.closing(self.server.child_pipe) as child_pipe:

1172

logger.info("TCP connection from: %s",

1135

logger.info(u"TCP connection from: %s",

1173

1136

unicode(self.client_address))

1174

logger.debug("Pipe FD: %d",

1137

logger.debug(u"Pipe FD: %d",

1175

1138

self.server.child_pipe.fileno())

1176

1139

1177

1140

session = (gnutls.connection

1184

1147

# no X.509 keys are added to it. Therefore, we can use it

1185

1148

# here despite using OpenPGP certificates.

1186

1149

1187

#priority = ':'.join(("NONE", "+VERS-TLS1.1",

1188

# "+AES-256-CBC", "+SHA1",

1189

# "+COMP-NULL", "+CTYPE-OPENPGP",

1190

# "+DHE-DSS"))

1150

#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",

1151

# u"+AES-256-CBC", u"+SHA1",

1152

# u"+COMP-NULL", u"+CTYPE-OPENPGP",

1153

# u"+DHE-DSS"))

1191

1154

# Use a fallback default, since this MUST be set.

1192

1155

priority = self.server.gnutls_priority

1193

1156

if priority is None:

1194

priority = "NORMAL"

1157

priority = u"NORMAL"

1195

1158

(gnutls.library.functions

1196

1159

.gnutls_priority_set_direct(session._c_object,

1197

1160

priority, None))

1199

1162

# Start communication using the Mandos protocol

1200

1163

# Get protocol number

1201

1164

line = self.request.makefile().readline()

1202

logger.debug("Protocol version: %r", line)

1165

logger.debug(u"Protocol version: %r", line)

1203

1166

try:

1204

1167

if int(line.strip().split()[0]) > 1:

1205

1168

raise RuntimeError

1206

1169

except (ValueError, IndexError, RuntimeError), error:

1207

logger.error("Unknown protocol version: %s", error)

1170

logger.error(u"Unknown protocol version: %s", error)

1208

1171

return

1209

1172

1210

1173

# Start GnuTLS connection

1211

1174

try:

1212

1175

session.handshake()

1213

1176

except gnutls.errors.GNUTLSError, error:

1214

logger.warning("Handshake failed: %s", error)

1177

logger.warning(u"Handshake failed: %s", error)

1215

1178

# Do not run session.bye() here: the session is not

1216

1179

# established. Just abandon the request.

1217

1180

return

1218

logger.debug("Handshake succeeded")

1181

logger.debug(u"Handshake succeeded")

1219

1182

1220

1183

approval_required = False

1221

1184

try:

1223

1186

fpr = self.fingerprint(self.peer_certificate

1224

1187

(session))

1225

1188

except (TypeError, gnutls.errors.GNUTLSError), error:

1226

logger.warning("Bad certificate: %s", error)

1189

logger.warning(u"Bad certificate: %s", error)

1227

1190

return

1228

logger.debug("Fingerprint: %s", fpr)

1191

logger.debug(u"Fingerprint: %s", fpr)

1229

1192

1230

1193

try:

1231

1194

client = ProxyClient(child_pipe, fpr,

1240

1203

1241

1204

while True:

1242

1205

if not client.enabled:

1243

logger.warning("Client %s is disabled",

1206

logger.warning(u"Client %s is disabled",

1244

1207

client.name)

1245

1208

if self.server.use_dbus:

1246

1209

# Emit D-Bus signal

1251

1214

#We are approved or approval is disabled

1252

1215

break

1253

1216

elif client._approved is None:

1254

logger.info("Client %s needs approval",

1217

logger.info(u"Client %s needs approval",

1255

1218

client.name)

1256

1219

if self.server.use_dbus:

1257

1220

# Emit D-Bus signal

1259

1222

client.approval_delay_milliseconds(),

1260

1223

client.approved_by_default)

1261

1224

else:

1262

logger.warning("Client %s was not approved",

1225

logger.warning(u"Client %s was not approved",

1263

1226

client.name)

1264

1227

if self.server.use_dbus:

1265

1228

# Emit D-Bus signal

1280

1243

client.name)

1281

1244

if self.server.use_dbus:

1282

1245

# Emit D-Bus signal

1283

client.Rejected("Approval timed out")

1246

client.Rejected("Timed out")

1284

1247

return

1285

1248

else:

1286

1249

break

1294

1257

except (gnutls.errors.GNUTLSError), error:

1295

1258

logger.warning("gnutls send failed")

1296

1259

return

1297

logger.debug("Sent: %d, remaining: %d",

1260

logger.debug(u"Sent: %d, remaining: %d",

1298

1261

sent, len(client.secret)

1299

1262

- (sent_size + sent))

1300

1263

sent_size += sent

1301

1264

1302

logger.info("Sending secret to %s", client.name)

1265

logger.info(u"Sending secret to %s", client.name)

1303

1266

# bump the timeout as if seen

1304

1267

client.checked_ok()

1305

1268

if self.server.use_dbus:

1328

1291

.gnutls_certificate_get_peers

1329

1292

(session._c_object, ctypes.byref(list_size)))

1330

1293

if not bool(cert_list) and list_size.value != 0:

1331

raise gnutls.errors.GNUTLSError("error getting peer"

1332

" certificate")

1294

raise gnutls.errors.GNUTLSError(u"error getting peer"

1295

u" certificate")

1333

1296

if list_size.value == 0:

1334

1297

return None

1335

1298

cert = cert_list[0]

1361

1324

if crtverify.value != 0:

1362

1325

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1363

1326

raise (gnutls.errors.CertificateSecurityError

1364

("Verify failed"))

1327

(u"Verify failed"))

1365

1328

# New buffer for the fingerprint

1366

1329

buf = ctypes.create_string_buffer(20)

1367

1330

buf_len = ctypes.c_size_t()

1374

1337

# Convert the buffer to a Python bytestring

1375

1338

fpr = ctypes.string_at(buf, buf_len.value)

1376

1339

# Convert the bytestring to hexadecimal notation

1377

hex_fpr = ''.join("%02X" % ord(char) for char in fpr)

1340

hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)

1378

1341

return hex_fpr

1379

1342

1380

1343

1432

1395

bind to an address or port if they were not specified."""

1433

1396

if self.interface is not None:

1434

1397

if SO_BINDTODEVICE is None:

1435

logger.error("SO_BINDTODEVICE does not exist;"

1436

" cannot bind to interface %s",

1398

logger.error(u"SO_BINDTODEVICE does not exist;"

1399

u" cannot bind to interface %s",

1437

1400

self.interface)

1438

1401

else:

1439

1402

try:

1440

1403

self.socket.setsockopt(socket.SOL_SOCKET,

1441

1404

SO_BINDTODEVICE,

1442

1405

str(self.interface

1443

+ '\0'))

1406

+ u'\0'))

1444

1407

except socket.error, error:

1445

1408

if error[0] == errno.EPERM:

1446

logger.error("No permission to"

1447

" bind to interface %s",

1409

logger.error(u"No permission to"

1410

u" bind to interface %s",

1448

1411

self.interface)

1449

1412

elif error[0] == errno.ENOPROTOOPT:

1450

logger.error("SO_BINDTODEVICE not available;"

1451

" cannot bind to interface %s",

1413

logger.error(u"SO_BINDTODEVICE not available;"

1414

u" cannot bind to interface %s",

1452

1415

self.interface)

1453

1416

else:

1454

1417

raise

1456

1419

if self.server_address[0] or self.server_address[1]:

1457

1420

if not self.server_address[0]:

1458

1421

if self.address_family == socket.AF_INET6:

1459

any_address = "::" # in6addr_any

1422

any_address = u"::" # in6addr_any

1460

1423

else:

1461

1424

any_address = socket.INADDR_ANY

1462

1425

self.server_address = (any_address,

1511

1474

def handle_ipc(self, source, condition, parent_pipe=None,

1512

1475

client_object=None):

1513

1476

condition_names = {

1514

gobject.IO_IN: "IN", # There is data to read.

1515

gobject.IO_OUT: "OUT", # Data can be written (without

1477

gobject.IO_IN: u"IN", # There is data to read.

1478

gobject.IO_OUT: u"OUT", # Data can be written (without

1516

1479

# blocking).

1517

gobject.IO_PRI: "PRI", # There is urgent data to read.

1518

gobject.IO_ERR: "ERR", # Error condition.

1519

gobject.IO_HUP: "HUP" # Hung up (the connection has been

1480

gobject.IO_PRI: u"PRI", # There is urgent data to read.

1481

gobject.IO_ERR: u"ERR", # Error condition.

1482

gobject.IO_HUP: u"HUP" # Hung up (the connection has been

1520

1483

# broken, usually for pipes and

1521

1484

# sockets).

1522

1485

}

1524

1487

for cond, name in

1525

1488

condition_names.iteritems()

1526

1489

if cond & condition)

1490

logger.debug(u"Handling IPC: FD = %d, condition = %s", source,

1491

conditions_string)

1492

1527

1493

# error or the other end of multiprocessing.Pipe has closed

1528

1494

if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):

1529

1495

return False

1530

1496

1531

1497

# Read a request from the child

1532

1498

request = parent_pipe.recv()

1499

logger.debug(u"IPC request: %s", repr(request))

1533

1500

command = request[0]

1534

1501

1535

1502

if command == 'init':

1541

1508

client = c

1542

1509

break

1543

1510

else:

1544

logger.warning("Client not found for fingerprint: %s, ad"

1545

"dress: %s", fpr, address)

1511

logger.warning(u"Client not found for fingerprint: %s, ad"

1512

u"dress: %s", fpr, address)

1546

1513

if self.use_dbus:

1547

1514

# Emit D-Bus signal

1548

mandos_dbus_service.ClientNotFound(fpr, address[0])

1515

mandos_dbus_service.ClientNotFound(fpr, address)

1549

1516

parent_pipe.send(False)

1550

1517

return False

1551

1518

1582

1549

def string_to_delta(interval):

1583

1550

"""Parse a string and return a datetime.timedelta

1584

1551

1585

>>> string_to_delta('7d')

1552

>>> string_to_delta(u'7d')

1586

1553

datetime.timedelta(7)

1587

>>> string_to_delta('60s')

1554

>>> string_to_delta(u'60s')

1588

1555

datetime.timedelta(0, 60)

1589

>>> string_to_delta('60m')

1556

>>> string_to_delta(u'60m')

1590

1557

datetime.timedelta(0, 3600)

1591

>>> string_to_delta('24h')

1558

>>> string_to_delta(u'24h')

1592

1559

datetime.timedelta(1)

1593

>>> string_to_delta('1w')

1560

>>> string_to_delta(u'1w')

1594

1561

datetime.timedelta(7)

1595

>>> string_to_delta('5m 30s')

1562

>>> string_to_delta(u'5m 30s')

1596

1563

datetime.timedelta(0, 330)

1597

1564

"""

1598

1565

timevalue = datetime.timedelta(0)

1600

1567

try:

1601

1568

suffix = unicode(s[-1])

1602

1569

value = int(s[:-1])

1603

if suffix == "d":

1570

if suffix == u"d":

1604

1571

delta = datetime.timedelta(value)

1605

elif suffix == "s":

1572

elif suffix == u"s":

1606

1573

delta = datetime.timedelta(0, value)

1607

elif suffix == "m":

1574

elif suffix == u"m":

1608

1575

delta = datetime.timedelta(0, 0, 0, 0, value)

1609

elif suffix == "h":

1576

elif suffix == u"h":

1610

1577

delta = datetime.timedelta(0, 0, 0, 0, 0, value)

1611

elif suffix == "w":

1578

elif suffix == u"w":

1612

1579

delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)

1613

1580

else:

1614

raise ValueError("Unknown suffix %r" % suffix)

1581

raise ValueError(u"Unknown suffix %r" % suffix)

1615

1582

except (ValueError, IndexError), e:

1616

1583

raise ValueError(e.message)

1617

1584

timevalue += delta

1625

1592

global if_nametoindex

1626

1593

try:

1627

1594

if_nametoindex = (ctypes.cdll.LoadLibrary

1628

(ctypes.util.find_library("c"))

1595

(ctypes.util.find_library(u"c"))

1629

1596

.if_nametoindex)

1630

1597

except (OSError, AttributeError):

1631

logger.warning("Doing if_nametoindex the hard way")

1598

logger.warning(u"Doing if_nametoindex the hard way")

1632

1599

def if_nametoindex(interface):

1633

1600

"Get an interface index the hard way, i.e. using fcntl()"

1634

1601

SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h

1635

1602

with contextlib.closing(socket.socket()) as s:

1636

1603

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1637

struct.pack(str("16s16x"),

1604

struct.pack(str(u"16s16x"),

1638

1605

interface))

1639

interface_index = struct.unpack(str("I"),

1606

interface_index = struct.unpack(str(u"I"),

1640

1607

ifreq[16:20])[0]

1641

1608

return interface_index

1642

1609

return if_nametoindex(interface)

1650

1617

sys.exit()

1651

1618

os.setsid()

1652

1619

if not nochdir:

1653

os.chdir("/")

1620

os.chdir(u"/")

1654

1621

if os.fork():

1655

1622

sys.exit()

1656

1623

if not noclose:

1658

1625

null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)

1659

1626

if not stat.S_ISCHR(os.fstat(null).st_mode):

1660

1627

raise OSError(errno.ENODEV,

1661

"%s not a character device"

1628

u"%s not a character device"

1662

1629

% os.path.devnull)

1663

1630

os.dup2(null, sys.stdin.fileno())

1664

1631

os.dup2(null, sys.stdout.fileno())

1673

1640

# Parsing of options, both command line and config file

1674

1641

1675

1642

parser = optparse.OptionParser(version = "%%prog %s" % version)

1676

parser.add_option("-i", "--interface", type="string",

1677

metavar="IF", help="Bind to interface IF")

1678

parser.add_option("-a", "--address", type="string",

1679

help="Address to listen for requests on")

1680

parser.add_option("-p", "--port", type="int",

1681

help="Port number to receive requests on")

1682

parser.add_option("--check", action="store_true",

1683

help="Run self-test")

1684

parser.add_option("--debug", action="store_true",

1685

help="Debug mode; run in foreground and log to"

1686

" terminal")

1687

parser.add_option("--debuglevel", type="string", metavar="LEVEL",

1688

help="Debug level for stdout output")

1689

parser.add_option("--priority", type="string", help="GnuTLS"

1690

" priority string (see GnuTLS documentation)")

1691

parser.add_option("--servicename", type="string",

1692

metavar="NAME", help="Zeroconf service name")

1693

parser.add_option("--configdir", type="string",

1694

default="/etc/mandos", metavar="DIR",

1695

help="Directory to search for configuration"

1696

" files")

1697

parser.add_option("--no-dbus", action="store_false",

1698

dest="use_dbus", help="Do not provide D-Bus"

1699

" system bus interface")

1700

parser.add_option("--no-ipv6", action="store_false",

1701

dest="use_ipv6", help="Do not use IPv6")

1643

parser.add_option("-i", u"--interface", type=u"string",

1644

metavar="IF", help=u"Bind to interface IF")

1645

parser.add_option("-a", u"--address", type=u"string",

1646

help=u"Address to listen for requests on")

1647

parser.add_option("-p", u"--port", type=u"int",

1648

help=u"Port number to receive requests on")

1649

parser.add_option("--check", action=u"store_true",

1650

help=u"Run self-test")

1651

parser.add_option("--debug", action=u"store_true",

1652

help=u"Debug mode; run in foreground and log to"

1653

u" terminal")

1654

parser.add_option("--debuglevel", type=u"string", metavar="Level",

1655

help=u"Debug level for stdout output")

1656

parser.add_option("--priority", type=u"string", help=u"GnuTLS"

1657

u" priority string (see GnuTLS documentation)")

1658

parser.add_option("--servicename", type=u"string",

1659

metavar=u"NAME", help=u"Zeroconf service name")

1660

parser.add_option("--configdir", type=u"string",

1661

default=u"/etc/mandos", metavar=u"DIR",

1662

help=u"Directory to search for configuration"

1663

u" files")

1664

parser.add_option("--no-dbus", action=u"store_false",

1665

dest=u"use_dbus", help=u"Do not provide D-Bus"

1666

u" system bus interface")

1667

parser.add_option("--no-ipv6", action=u"store_false",

1668

dest=u"use_ipv6", help=u"Do not use IPv6")

1702

1669

options = parser.parse_args()[0]

1703

1670

1704

1671

if options.check:

1707

1674

sys.exit()

1708

1675

1709

1676

# Default values for config file for server-global settings

1710

server_defaults = { "interface": "",

1711

"address": "",

1712

"port": "",

1713

"debug": "False",

1714

"priority":

1715

"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",

1716

"servicename": "Mandos",

1717

"use_dbus": "True",

1718

"use_ipv6": "True",

1719

"debuglevel": "",

1677

server_defaults = { u"interface": u"",

1678

u"address": u"",

1679

u"port": u"",

1680

u"debug": u"False",

1681

u"priority":

1682

u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",

1683

u"servicename": u"Mandos",

1684

u"use_dbus": u"True",

1685

u"use_ipv6": u"True",

1686

u"debuglevel": u"",

1720

1687

}

1721

1688

1722

1689

# Parse config file for server-global settings

1723

1690

server_config = configparser.SafeConfigParser(server_defaults)

1724

1691

del server_defaults

1725

1692

server_config.read(os.path.join(options.configdir,

1726

"mandos.conf"))

1693

u"mandos.conf"))

1727

1694

# Convert the SafeConfigParser object to a dict

1728

1695

server_settings = server_config.defaults()

1729

1696

# Use the appropriate methods on the non-string config options

1730

for option in ("debug", "use_dbus", "use_ipv6"):

1731

server_settings[option] = server_config.getboolean("DEFAULT",

1697

for option in (u"debug", u"use_dbus", u"use_ipv6"):

1698

server_settings[option] = server_config.getboolean(u"DEFAULT",

1732

1699

option)

1733

1700

if server_settings["port"]:

1734

server_settings["port"] = server_config.getint("DEFAULT",

1735

"port")

1701

server_settings["port"] = server_config.getint(u"DEFAULT",

1702

u"port")

1736

1703

del server_config

1737

1704

1738

1705

# Override the settings from the config file with command line

1739

1706

# options, if set.

1740

for option in ("interface", "address", "port", "debug",

1741

"priority", "servicename", "configdir",

1742

"use_dbus", "use_ipv6", "debuglevel"):

1707

for option in (u"interface", u"address", u"port", u"debug",

1708

u"priority", u"servicename", u"configdir",

1709

u"use_dbus", u"use_ipv6", u"debuglevel"):

1743

1710

value = getattr(options, option)

1744

1711

if value is not None:

1745

1712

server_settings[option] = value

1753

1720

##################################################################

1754

1721

1755

1722

# For convenience

1756

debug = server_settings["debug"]

1757

debuglevel = server_settings["debuglevel"]

1758

use_dbus = server_settings["use_dbus"]

1759

use_ipv6 = server_settings["use_ipv6"]

1723

debug = server_settings[u"debug"]

1724

debuglevel = server_settings[u"debuglevel"]

1725

use_dbus = server_settings[u"use_dbus"]

1726

use_ipv6 = server_settings[u"use_ipv6"]

1760

1727

1761

if server_settings["servicename"] != "Mandos":

1728

if server_settings[u"servicename"] != u"Mandos":

1762

1729

syslogger.setFormatter(logging.Formatter

1763

('Mandos (%s) [%%(process)d]:'

1764

' %%(levelname)s: %%(message)s'

1765

% server_settings["servicename"]))

1730

(u'Mandos (%s) [%%(process)d]:'

1731

u' %%(levelname)s: %%(message)s'

1732

% server_settings[u"servicename"]))

1766

1733

1767

1734

# Parse config file with clients

1768

client_defaults = { "timeout": "1h",

1769

"interval": "5m",

1770

"checker": "fping -q -- %%(host)s",

1771

"host": "",

1772

"approval_delay": "0s",

1773

"approval_duration": "1s",

1735

client_defaults = { u"timeout": u"1h",

1736

u"interval": u"5m",

1737

u"checker": u"fping -q -- %%(host)s",

1738

u"host": u"",

1739

u"approval_delay": u"0s",

1740

u"approval_duration": u"1s",

1774

1741

}

1775

1742

client_config = configparser.SafeConfigParser(client_defaults)

1776

client_config.read(os.path.join(server_settings["configdir"],

1777

"clients.conf"))

1743

client_config.read(os.path.join(server_settings[u"configdir"],

1744

u"clients.conf"))

1778

1745

1779

1746

global mandos_dbus_service

1780

1747

mandos_dbus_service = None

1781

1748

1782

tcp_server = MandosServer((server_settings["address"],

1783

server_settings["port"]),

1749

tcp_server = MandosServer((server_settings[u"address"],

1750

server_settings[u"port"]),

1784

1751

ClientHandler,

1785

interface=(server_settings["interface"]

1752

interface=(server_settings[u"interface"]

1786

1753

or None),

1787

1754

use_ipv6=use_ipv6,

1788

1755

gnutls_priority=

1789

server_settings["priority"],

1756

server_settings[u"priority"],

1790

1757

use_dbus=use_dbus)

1791

if not debug:

1792

pidfilename = "/var/run/mandos.pid"

1793

try:

1794

pidfile = open(pidfilename, "w")

1795

except IOError:

1796

logger.error("Could not open file %r", pidfilename)

1758

pidfilename = u"/var/run/mandos.pid"

1759

try:

1760

pidfile = open(pidfilename, u"w")

1761

except IOError:

1762

logger.error(u"Could not open file %r", pidfilename)

1797

1763

1798

1764

try:

1799

uid = pwd.getpwnam("_mandos").pw_uid

1800

gid = pwd.getpwnam("_mandos").pw_gid

1765

uid = pwd.getpwnam(u"_mandos").pw_uid

1766

gid = pwd.getpwnam(u"_mandos").pw_gid

1801

1767

except KeyError:

1802

1768

try:

1803

uid = pwd.getpwnam("mandos").pw_uid

1804

gid = pwd.getpwnam("mandos").pw_gid

1769

uid = pwd.getpwnam(u"mandos").pw_uid

1770

gid = pwd.getpwnam(u"mandos").pw_gid

1805

1771

except KeyError:

1806

1772

try:

1807

uid = pwd.getpwnam("nobody").pw_uid

1808

gid = pwd.getpwnam("nobody").pw_gid

1773

uid = pwd.getpwnam(u"nobody").pw_uid

1774

gid = pwd.getpwnam(u"nobody").pw_gid

1809

1775

except KeyError:

1810

1776

uid = 65534

1811

1777

gid = 65534

1833

1799

1834

1800

@gnutls.library.types.gnutls_log_func

1835

1801

def debug_gnutls(level, string):

1836

logger.debug("GnuTLS: %s", string[:-1])

1802

logger.debug(u"GnuTLS: %s", string[:-1])

1837

1803

1838

1804

(gnutls.library.functions

1839

1805

.gnutls_global_set_log_function(debug_gnutls))

1847

1813

# No console logging

1848

1814

logger.removeHandler(console)

1849

1815

1850

# Need to fork before connecting to D-Bus

1851

if not debug:

1852

# Close all input and output, do double fork, etc.

1853

daemon()

1854

1816

1855

1817

global main_loop

1856

1818

# From the Avahi example code

1860

1822

# End of Avahi example code

1861

1823

if use_dbus:

1862

1824

try:

1863

bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",

1825

bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",

1864

1826

bus, do_not_queue=True)

1865

1827

except dbus.exceptions.NameExistsException, e:

1866

logger.error(unicode(e) + ", disabling D-Bus")

1828

logger.error(unicode(e) + u", disabling D-Bus")

1867

1829

use_dbus = False

1868

server_settings["use_dbus"] = False

1830

server_settings[u"use_dbus"] = False

1869

1831

tcp_server.use_dbus = False

1870

1832

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

1871

service = AvahiService(name = server_settings["servicename"],

1872

servicetype = "_mandos._tcp",

1833

service = AvahiService(name = server_settings[u"servicename"],

1834

servicetype = u"_mandos._tcp",

1873

1835

protocol = protocol, bus = bus)

1874

1836

if server_settings["interface"]:

1875

1837

service.interface = (if_nametoindex

1876

(str(server_settings["interface"])))

1877

1838

(str(server_settings[u"interface"])))

1839

1840

if not debug:

1841

# Close all input and output, do double fork, etc.

1842

daemon()

1843

1878

1844

global multiprocessing_manager

1879

1845

multiprocessing_manager = multiprocessing.Manager()

1880

1846

1899

1865

client_config, section)))

1900

1866

for section in client_config.sections()))

1901

1867

if not tcp_server.clients:

1902

logger.warning("No clients defined")

1868

logger.warning(u"No clients defined")

1903

1869

1870

try:

1871

with pidfile:

1872

pid = os.getpid()

1873

pidfile.write(str(pid) + "\n")

1874

del pidfile

1875

except IOError:

1876

logger.error(u"Could not write to file %r with PID %d",

1877

pidfilename, pid)

1878

except NameError:

1879

# "pidfile" was never created

1880

pass

1881

del pidfilename

1882

1904

1883

if not debug:

1905

try:

1906

with pidfile:

1907

pid = os.getpid()

1908

pidfile.write(str(pid) + "\n".encode("utf-8"))

1909

del pidfile

1910

except IOError:

1911

logger.error("Could not write to file %r with PID %d",

1912

pidfilename, pid)

1913

except NameError:

1914

# "pidfile" was never created

1915

pass

1916

del pidfilename

1917

1918

1884

signal.signal(signal.SIGINT, signal.SIG_IGN)

1919

1920

1885

signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())

1921

1886

signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())

1922

1887

1924

1889

class MandosDBusService(dbus.service.Object):

1925

1890

"""A D-Bus proxy object"""

1926

1891

def __init__(self):

1927

dbus.service.Object.__init__(self, bus, "/")

1928

_interface = "se.bsnet.fukt.Mandos"

1892

dbus.service.Object.__init__(self, bus, u"/")

1893

_interface = u"se.bsnet.fukt.Mandos"

1929

1894

1930

@dbus.service.signal(_interface, signature="o")

1895

@dbus.service.signal(_interface, signature=u"o")

1931

1896

def ClientAdded(self, objpath):

1932

1897

"D-Bus signal"

1933

1898

pass

1934

1899

1935

@dbus.service.signal(_interface, signature="ss")

1900

@dbus.service.signal(_interface, signature=u"ss")

1936

1901

def ClientNotFound(self, fingerprint, address):

1937

1902

"D-Bus signal"

1938

1903

pass

1939

1904

1940

@dbus.service.signal(_interface, signature="os")

1905

@dbus.service.signal(_interface, signature=u"os")

1941

1906

def ClientRemoved(self, objpath, name):

1942

1907

"D-Bus signal"

1943

1908

pass

1944

1909

1945

@dbus.service.method(_interface, out_signature="ao")

1910

@dbus.service.method(_interface, out_signature=u"ao")

1946

1911

def GetAllClients(self):

1947

1912

"D-Bus method"

1948

1913

return dbus.Array(c.dbus_object_path

1949

1914

for c in tcp_server.clients)

1950

1915

1951

1916

@dbus.service.method(_interface,

1952

out_signature="a{oa{sv}}")

1917

out_signature=u"a{oa{sv}}")

1953

1918

def GetAllClientsWithProperties(self):

1954

1919

"D-Bus method"

1955

1920

return dbus.Dictionary(

1956

((c.dbus_object_path, c.GetAll(""))

1921

((c.dbus_object_path, c.GetAll(u""))

1957

1922

for c in tcp_server.clients),

1958

signature="oa{sv}")

1923

signature=u"oa{sv}")

1959

1924

1960

@dbus.service.method(_interface, in_signature="o")

1925

@dbus.service.method(_interface, in_signature=u"o")

1961

1926

def RemoveClient(self, object_path):

1962

1927

"D-Bus method"

1963

1928

for c in tcp_server.clients:

2005

1970

# Find out what port we got

2006

1971

service.port = tcp_server.socket.getsockname()[1]

2007

1972

if use_ipv6:

2008

logger.info("Now listening on address %r, port %d,"

1973

logger.info(u"Now listening on address %r, port %d,"

2009

1974

" flowinfo %d, scope_id %d"

2010

1975

% tcp_server.socket.getsockname())

2011

1976

else: # IPv4

2012

logger.info("Now listening on address %r, port %d"

1977

logger.info(u"Now listening on address %r, port %d"

2013

1978

% tcp_server.socket.getsockname())

2014

1979

2015

1980

#service.interface = tcp_server.socket.getsockname()[3]

2019

1984

try:

2020

1985

service.activate()

2021

1986

except dbus.exceptions.DBusException, error:

2022

logger.critical("DBusException: %s", error)

1987

logger.critical(u"DBusException: %s", error)

2023

1988

cleanup()

2024

1989

sys.exit(1)

2025

1990

# End of Avahi example code

2029

1994

(tcp_server.handle_request

2030

1995

(*args[2:], **kwargs) or True))

2031

1996

2032

logger.debug("Starting main loop")

1997

logger.debug(u"Starting main loop")

2033

1998

main_loop.run()

2034

1999

except AvahiError, error:

2035

logger.critical("AvahiError: %s", error)

2000

logger.critical(u"AvahiError: %s", error)

2036

2001

cleanup()

2037

2002

sys.exit(1)

2038

2003

except KeyboardInterrupt:

2039

2004

if debug:

2040

2005

print >> sys.stderr

2041

logger.debug("Server received KeyboardInterrupt")

2042

logger.debug("Server exiting")

2006

logger.debug(u"Server received KeyboardInterrupt")

2007

logger.debug(u"Server exiting")

2043

2008

# Must run before the D-Bus bus name gets deregistered

2044

2009

cleanup()

2045

2010