/mandos/release : revision 24.1.155

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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, print_function,

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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 = str("/dev/log")))

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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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self.cleanup()

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os._exit(1)

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self.add()

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

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

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approved_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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"Return the 'interval' attribute in milliseconds"

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return self._timedelta_to_milliseconds(self.interval)

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def approval_delay_milliseconds(self):

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return self._timedelta_to_milliseconds(self.approval_delay)

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def approved_delay_milliseconds(self):

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return self._timedelta_to_milliseconds(self.approved_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("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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self.approval_duration = string_to_delta(

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config["approval_duration"])

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self.approved_delay = string_to_delta(

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config[u"approved_delay"])

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self.approved_duration = string_to_delta(

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config[u"approved_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:

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

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

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vars(self))

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self.checked_ok()

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else:

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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))

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else:

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

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

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vars(self))

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def checked_ok(self):

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(self.timeout_milliseconds(),

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self.disable))

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def need_approval(self):

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self.last_approval_request = datetime.datetime.utcnow()

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def start_checker(self):

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

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raise error

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else:

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if pid:

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logger.warning("Checker was a zombie")

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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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command = self.checker_command % self.host

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except TypeError:

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# Escape attributes for the shell

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escaped_attrs = dict(

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(attr,

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

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errors=

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'replace')))

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for attr in

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self.runtime_expansions)

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escaped_attrs = dict((key,

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re.escape(unicode(str(val),

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errors=

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u'replace')))

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for key, val in

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vars(self).iteritems())

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try:

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command = self.checker_command % escaped_attrs

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except TypeError, error:

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

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' %s', self.checker_command, error)

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

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

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return True # Try again later

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self.current_checker_command = command

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try:

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

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

482

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command, self.name)

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

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

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# always replaced by /dev/null.)

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self.checker = subprocess.Popen(command,

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close_fds=True,

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shell=True, cwd="/")

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shell=True, cwd=u"/")

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self.checker_callback_tag = (gobject.child_watch_add

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(self.checker.pid,

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self.checker_callback,

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gobject.source_remove(self.checker_callback_tag)

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self.checker_callback(pid, status, command)

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except OSError, error:

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

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

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error)

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

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return True

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if self.checker_callback_tag:

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gobject.source_remove(self.checker_callback_tag)

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self.checker_callback_tag = None

511

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

491

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

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492

return

513

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

493

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

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try:

515

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

516

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#time.sleep(0.5)

521

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raise

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self.checker = None

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def dbus_service_property(dbus_interface, signature="v",

525

access="readwrite", byte_arrays=False):

504

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

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

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"""Decorators for marking methods of a DBusObjectWithProperties to

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become properties on the D-Bus.

528

508

535

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"""

536

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

537

517

# "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)

518

if byte_arrays and signature != u"ay":

519

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

520

u" signature %r" % signature)

541

521

def decorator(func):

542

522

func._dbus_is_property = True

543

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func._dbus_interface = dbus_interface

544

524

func._dbus_signature = signature

545

525

func._dbus_access = access

546

526

func._dbus_name = func.__name__

547

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

527

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

548

528

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

549

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

529

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

550

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return func

551

531

return decorator

552

532

580

560

581

561

@staticmethod

582

562

def _is_dbus_property(obj):

583

return getattr(obj, "_dbus_is_property", False)

563

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

584

564

585

565

def _get_all_dbus_properties(self):

586

566

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

594

574

property with the specified name and interface.

595

575

"""

596

576

for name in (property_name,

597

property_name + "_dbus_property"):

577

property_name + u"_dbus_property"):

598

578

prop = getattr(self, name, None)

599

579

if (prop is None

600

580

or not self._is_dbus_property(prop)

604

584

continue

605

585

return prop

606

586

# No such property

607

raise DBusPropertyNotFound(self.dbus_object_path + ":"

608

+ interface_name + "."

587

raise DBusPropertyNotFound(self.dbus_object_path + u":"

588

+ interface_name + u"."

609

589

+ property_name)

610

590

611

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

612

out_signature="v")

591

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

592

out_signature=u"v")

613

593

def Get(self, interface_name, property_name):

614

594

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

615

595

"""

616

596

prop = self._get_dbus_property(interface_name, property_name)

617

if prop._dbus_access == "write":

597

if prop._dbus_access == u"write":

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598

raise DBusPropertyAccessException(property_name)

619

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value = prop()

620

if not hasattr(value, "variant_level"):

600

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

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return value

622

602

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

623

603

624

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

604

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

625

605

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

626

606

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

627

607

"""

628

608

prop = self._get_dbus_property(interface_name, property_name)

629

if prop._dbus_access == "read":

609

if prop._dbus_access == u"read":

630

610

raise DBusPropertyAccessException(property_name)

631

if prop._dbus_get_args_options["byte_arrays"]:

611

if prop._dbus_get_args_options[u"byte_arrays"]:

632

612

# The byte_arrays option is not supported yet on

633

613

# signatures other than "ay".

634

if prop._dbus_signature != "ay":

614

if prop._dbus_signature != u"ay":

635

615

raise ValueError

636

616

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

637

617

for byte in value))

638

618

prop(value)

639

619

640

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

641

out_signature="a{sv}")

620

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

621

out_signature=u"a{sv}")

642

622

def GetAll(self, interface_name):

643

623

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

644

624

standard.

652

632

# Interface non-empty but did not match

653

633

continue

654

634

# Ignore write-only properties

655

if prop._dbus_access == "write":

635

if prop._dbus_access == u"write":

656

636

continue

657

637

value = prop()

658

if not hasattr(value, "variant_level"):

638

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

659

639

all[name] = value

660

640

continue

661

641

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

662

642

value.variant_level+1)

663

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

643

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

664

644

665

645

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

666

out_signature="s",

646

out_signature=u"s",

667

647

path_keyword='object_path',

668

648

connection_keyword='connection')

669

649

def Introspect(self, object_path, connection):

674

654

try:

675

655

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

676

656

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)

657

e = document.createElement(u"property")

658

e.setAttribute(u"name", name)

659

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

660

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

681

661

return e

682

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

662

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

683

663

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

684

664

for name, prop

685

665

in self._get_all_dbus_properties()

686

666

if prop._dbus_interface

687

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

667

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

688

668

if_tag.appendChild(tag)

689

669

# Add the names to the return values for the

690

670

# "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")

671

if (if_tag.getAttribute(u"name")

672

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

673

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

674

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

675

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

676

if (arg.getAttribute(u"direction")

677

== u"out"):

678

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

679

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

680

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

681

if (arg.getAttribute(u"direction")

682

== u"out"):

683

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

684

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

705

685

document.unlink()

706

686

except (AttributeError, xml.dom.DOMException,

707

687

xml.parsers.expat.ExpatError), error:

708

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

688

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

709

689

error)

710

690

return xmlstring

711

691

717

697

dbus_object_path: dbus.ObjectPath

718

698

bus: dbus.SystemBus()

719

699

"""

720

721

runtime_expansions = (Client.runtime_expansions

722

+ ("dbus_object_path",))

723

724

700

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

725

701

726

702

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

729

705

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

730

706

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

731

707

# the D-Bus

732

client_object_name = unicode(self.name).translate(

733

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

734

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

735

708

self.dbus_object_path = (dbus.ObjectPath

736

("/clients/" + client_object_name))

709

(u"/clients/"

710

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

737

711

DBusObjectWithProperties.__init__(self, self.bus,

738

712

self.dbus_object_path)

739

713

740

714

def _get_approvals_pending(self):

741

715

return self._approvals_pending

742

716

def _set_approvals_pending(self, value):

746

720

if (hasattr(self, "dbus_object_path")

747

721

and bval is not bool(old_value)):

748

722

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

749

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

723

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

750

724

dbus_bool)

751

725

752

726

approvals_pending = property(_get_approvals_pending,

760

734

variant_level=variant_level)

761

735

762

736

def enable(self):

763

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

737

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

764

738

r = Client.enable(self)

765

739

if oldstate != self.enabled:

766

740

# Emit D-Bus signals

767

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

741

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

768

742

dbus.Boolean(True, variant_level=1))

769

743

self.PropertyChanged(

770

dbus.String("LastEnabled"),

744

dbus.String(u"last_enabled"),

771

745

self._datetime_to_dbus(self.last_enabled,

772

746

variant_level=1))

773

747

return r

774

748

775

749

def disable(self, quiet = False):

776

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

750

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

777

751

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

778

752

if not quiet and oldstate != self.enabled:

779

753

# Emit D-Bus signal

780

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

754

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

781

755

dbus.Boolean(False, variant_level=1))

782

756

return r

783

757

786

760

self.remove_from_connection()

787

761

except LookupError:

788

762

pass

789

if hasattr(DBusObjectWithProperties, "__del__"):

763

if hasattr(DBusObjectWithProperties, u"__del__"):

790

764

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

791

765

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

792

766

795

769

self.checker_callback_tag = None

796

770

self.checker = None

797

771

# Emit D-Bus signal

798

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

772

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

799

773

dbus.Boolean(False, variant_level=1))

800

774

if os.WIFEXITED(condition):

801

775

exitstatus = os.WEXITSTATUS(condition)

816

790

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

817

791

# Emit D-Bus signal

818

792

self.PropertyChanged(

819

dbus.String("LastCheckedOK"),

793

dbus.String(u"last_checked_ok"),

820

794

(self._datetime_to_dbus(self.last_checked_ok,

821

795

variant_level=1)))

822

796

return r

823

797

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

833

798

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

834

799

old_checker = self.checker

835

800

if self.checker is not None:

843

808

# Emit D-Bus signal

844

809

self.CheckerStarted(self.current_checker_command)

845

810

self.PropertyChanged(

846

dbus.String("CheckerRunning"),

811

dbus.String(u"checker_running"),

847

812

dbus.Boolean(True, variant_level=1))

848

813

return r

849

814

850

815

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

851

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

816

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

852

817

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

853

818

if (old_checker is not None

854

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

855

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

819

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

820

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

856

821

dbus.Boolean(False, variant_level=1))

857

822

return r

858

823

863

828

def approve(self, value=True):

864

829

self.send_changedstate()

865

830

self._approved = value

866

gobject.timeout_add(self._timedelta_to_milliseconds

867

(self.approval_duration),

831

gobject.timeout_add(self._timedelta_to_milliseconds(self.approved_duration),

868

832

self._reset_approved)

869

833

870

834

871

835

## D-Bus methods, signals & properties

872

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

836

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

873

837

874

838

## Signals

875

839

876

840

# CheckerCompleted - signal

877

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

841

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

878

842

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

879

843

"D-Bus signal"

880

844

pass

881

845

882

846

# CheckerStarted - signal

883

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

847

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

884

848

def CheckerStarted(self, command):

885

849

"D-Bus signal"

886

850

pass

887

851

888

852

# PropertyChanged - signal

889

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

853

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

890

854

def PropertyChanged(self, property, value):

891

855

"D-Bus signal"

892

856

pass

901

865

pass

902

866

903

867

# Rejected - signal

904

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

868

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

905

869

def Rejected(self, reason):

906

870

"D-Bus signal"

907

871

pass

908

872

909

873

# NeedApproval - signal

910

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

874

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

911

875

def NeedApproval(self, timeout, default):

912

876

"D-Bus signal"

913

return self.need_approval()

877

pass

914

878

915

879

## Methods

916

880

917

881

# Approve - method

918

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

882

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

919

883

def Approve(self, value):

920

884

self.approve(value)

921

885

922

886

# CheckedOK - method

923

887

@dbus.service.method(_interface)

924

888

def CheckedOK(self):

949

913

950

914

## Properties

951

915

952

# ApprovalPending - property

953

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

954

def ApprovalPending_dbus_property(self):

916

# approved_pending - property

917

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

918

def approved_pending_dbus_property(self):

955

919

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

956

920

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):

921

# approved_by_default - property

922

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

923

access=u"readwrite")

924

def approved_by_default_dbus_property(self):

925

return dbus.Boolean(self.approved_by_default)

926

927

# approved_delay - property

928

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

929

access=u"readwrite")

930

def approved_delay_dbus_property(self):

931

return dbus.UInt64(self.approved_delay_milliseconds())

932

933

# approved_duration - property

934

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

935

access=u"readwrite")

936

def approved_duration_dbus_property(self):

937

return dbus.UInt64(self._timedelta_to_milliseconds(

938

self.approved_duration))

939

940

# name - property

941

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

942

def name_dbus_property(self):

994

943

return dbus.String(self.name)

995

944

996

# Fingerprint - property

997

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

998

def Fingerprint_dbus_property(self):

945

# fingerprint - property

946

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

947

def fingerprint_dbus_property(self):

999

948

return dbus.String(self.fingerprint)

1000

949

1001

# Host - property

1002

@dbus_service_property(_interface, signature="s",

1003

access="readwrite")

1004

def Host_dbus_property(self, value=None):

950

# host - property

951

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

952

access=u"readwrite")

953

def host_dbus_property(self, value=None):

1005

954

if value is None: # get

1006

955

return dbus.String(self.host)

1007

956

self.host = value

1008

957

# Emit D-Bus signal

1009

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

958

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

1010

959

dbus.String(value, variant_level=1))

1011

960

1012

# Created - property

1013

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

1014

def Created_dbus_property(self):

961

# created - property

962

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

963

def created_dbus_property(self):

1015

964

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

1016

965

1017

# LastEnabled - property

1018

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

1019

def LastEnabled_dbus_property(self):

966

# last_enabled - property

967

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

968

def last_enabled_dbus_property(self):

1020

969

if self.last_enabled is None:

1021

return dbus.String("")

970

return dbus.String(u"")

1022

971

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

1023

972

1024

# Enabled - property

1025

@dbus_service_property(_interface, signature="b",

1026

access="readwrite")

1027

def Enabled_dbus_property(self, value=None):

973

# enabled - property

974

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

975

access=u"readwrite")

976

def enabled_dbus_property(self, value=None):

1028

977

if value is None: # get

1029

978

return dbus.Boolean(self.enabled)

1030

979

if value:

1032

981

else:

1033

982

self.disable()

1034

983

1035

# LastCheckedOK - property

1036

@dbus_service_property(_interface, signature="s",

1037

access="readwrite")

1038

def LastCheckedOK_dbus_property(self, value=None):

984

# last_checked_ok - property

985

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

986

access=u"readwrite")

987

def last_checked_ok_dbus_property(self, value=None):

1039

988

if value is not None:

1040

989

self.checked_ok()

1041

990

return

1042

991

if self.last_checked_ok is None:

1043

return dbus.String("")

992

return dbus.String(u"")

1044

993

return dbus.String(self._datetime_to_dbus(self

1045

994

.last_checked_ok))

1046

995

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):

996

# timeout - property

997

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

998

access=u"readwrite")

999

def timeout_dbus_property(self, value=None):

1060

1000

if value is None: # get

1061

1001

return dbus.UInt64(self.timeout_milliseconds())

1062

1002

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

1063

1003

# Emit D-Bus signal

1064

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

1004

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

1065

1005

dbus.UInt64(value, variant_level=1))

1066

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

1006

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

1067

1007

return

1068

1008

# Reschedule timeout

1069

1009

gobject.source_remove(self.disable_initiator_tag)

1081

1021

self.disable_initiator_tag = (gobject.timeout_add

1082

1022

(time_to_die, self.disable))

1083

1023

1084

# Interval - property

1085

@dbus_service_property(_interface, signature="t",

1086

access="readwrite")

1087

def Interval_dbus_property(self, value=None):

1024

# interval - property

1025

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

1026

access=u"readwrite")

1027

def interval_dbus_property(self, value=None):

1088

1028

if value is None: # get

1089

1029

return dbus.UInt64(self.interval_milliseconds())

1090

1030

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

1091

1031

# Emit D-Bus signal

1092

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

1032

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

1093

1033

dbus.UInt64(value, variant_level=1))

1094

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

1034

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

1095

1035

return

1096

1036

# Reschedule checker run

1097

1037

gobject.source_remove(self.checker_initiator_tag)

1099

1039

(value, self.start_checker))

1100

1040

self.start_checker() # Start one now, too

1101

1041

1102

# Checker - property

1103

@dbus_service_property(_interface, signature="s",

1104

access="readwrite")

1105

def Checker_dbus_property(self, value=None):

1042

# checker - property

1043

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

1044

access=u"readwrite")

1045

def checker_dbus_property(self, value=None):

1106

1046

if value is None: # get

1107

1047

return dbus.String(self.checker_command)

1108

1048

self.checker_command = value

1109

1049

# Emit D-Bus signal

1110

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

1050

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

1111

1051

dbus.String(self.checker_command,

1112

1052

variant_level=1))

1113

1053

1114

# CheckerRunning - property

1115

@dbus_service_property(_interface, signature="b",

1116

access="readwrite")

1117

def CheckerRunning_dbus_property(self, value=None):

1054

# checker_running - property

1055

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

1056

access=u"readwrite")

1057

def checker_running_dbus_property(self, value=None):

1118

1058

if value is None: # get

1119

1059

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

1120

1060

if value:

1122

1062

else:

1123

1063

self.stop_checker()

1124

1064

1125

# ObjectPath - property

1126

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

1127

def ObjectPath_dbus_property(self):

1065

# object_path - property

1066

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

1067

def object_path_dbus_property(self):

1128

1068

return self.dbus_object_path # is already a dbus.ObjectPath

1129

1069

1130

# Secret = property

1131

@dbus_service_property(_interface, signature="ay",

1132

access="write", byte_arrays=True)

1133

def Secret_dbus_property(self, value):

1070

# secret = property

1071

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

1072

access=u"write", byte_arrays=True)

1073

def secret_dbus_property(self, value):

1134

1074

self.secret = str(value)

1135

1075

1136

1076

del _interface

1170

1110

1171

1111

def handle(self):

1172

1112

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

1173

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

1113

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

1174

1114

unicode(self.client_address))

1175

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

1115

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

1176

1116

self.server.child_pipe.fileno())

1177

1117

1178

1118

session = (gnutls.connection

1185

1125

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

1186

1126

# here despite using OpenPGP certificates.

1187

1127

1188

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

1189

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

1190

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

1191

# "+DHE-DSS"))

1128

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

1129

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

1130

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

1131

# u"+DHE-DSS"))

1192

1132

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

1193

1133

priority = self.server.gnutls_priority

1194

1134

if priority is None:

1195

priority = "NORMAL"

1135

priority = u"NORMAL"

1196

1136

(gnutls.library.functions

1197

1137

.gnutls_priority_set_direct(session._c_object,

1198

1138

priority, None))

1200

1140

# Start communication using the Mandos protocol

1201

1141

# Get protocol number

1202

1142

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

1203

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

1143

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

1204

1144

try:

1205

1145

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

1206

1146

raise RuntimeError

1207

1147

except (ValueError, IndexError, RuntimeError), error:

1208

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

1148

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

1209

1149

return

1210

1150

1211

1151

# Start GnuTLS connection

1212

1152

try:

1213

1153

session.handshake()

1214

1154

except gnutls.errors.GNUTLSError, error:

1215

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

1155

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

1216

1156

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

1217

1157

# established. Just abandon the request.

1218

1158

return

1219

logger.debug("Handshake succeeded")

1159

logger.debug(u"Handshake succeeded")

1220

1160

1221

1161

approval_required = False

1222

1162

try:

1224

1164

fpr = self.fingerprint(self.peer_certificate

1225

1165

(session))

1226

1166

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

1227

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

1167

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

1228

1168

return

1229

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

1169

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

1230

1170

1231

1171

try:

1232

1172

client = ProxyClient(child_pipe, fpr,

1234

1174

except KeyError:

1235

1175

return

1236

1176

1237

if client.approval_delay:

1238

delay = client.approval_delay

1177

if client.approved_delay:

1178

delay = client.approved_delay

1239

1179

client.approvals_pending += 1

1240

1180

approval_required = True

1241

1181

1242

1182

while True:

1243

1183

if not client.enabled:

1244

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

1184

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

1245

1185

client.name)

1246

1186

if self.server.use_dbus:

1247

1187

# Emit D-Bus signal

1248

1188

client.Rejected("Disabled")

1249

1189

return

1250

1190

1251

if client._approved or not client.approval_delay:

1191

if client._approved or not client.approved_delay:

1252

1192

#We are approved or approval is disabled

1253

1193

break

1254

1194

elif client._approved is None:

1255

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

1195

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

1256

1196

client.name)

1257

1197

if self.server.use_dbus:

1258

1198

# Emit D-Bus signal

1259

1199

client.NeedApproval(

1260

client.approval_delay_milliseconds(),

1200

client.approved_delay_milliseconds(),

1261

1201

client.approved_by_default)

1262

1202

else:

1263

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

1203

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

1264

1204

client.name)

1265

1205

if self.server.use_dbus:

1266

1206

# Emit D-Bus signal

1267

client.Rejected("Denied")

1207

client.Rejected("Disapproved")

1268

1208

return

1269

1209

1270

1210

#wait until timeout or approved

1281

1221

client.name)

1282

1222

if self.server.use_dbus:

1283

1223

# Emit D-Bus signal

1284

client.Rejected("Approval timed out")

1224

client.Rejected("Time out")

1285

1225

return

1286

1226

else:

1287

1227

break

1295

1235

except (gnutls.errors.GNUTLSError), error:

1296

1236

logger.warning("gnutls send failed")

1297

1237

return

1298

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

1238

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

1299

1239

sent, len(client.secret)

1300

1240

- (sent_size + sent))

1301

1241

sent_size += sent

1302

1242

1303

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

1243

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

1304

1244

# bump the timeout as if seen

1305

1245

client.checked_ok()

1306

1246

if self.server.use_dbus:

1313

1253

try:

1314

1254

session.bye()

1315

1255

except (gnutls.errors.GNUTLSError), error:

1316

logger.warning("GnuTLS bye failed")

1256

logger.warning("gnutls bye failed")

1317

1257

1318

1258

@staticmethod

1319

1259

def peer_certificate(session):

1329

1269

.gnutls_certificate_get_peers

1330

1270

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

1331

1271

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

1332

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

1333

" certificate")

1272

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

1273

u" certificate")

1334

1274

if list_size.value == 0:

1335

1275

return None

1336

1276

cert = cert_list[0]

1362

1302

if crtverify.value != 0:

1363

1303

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1364

1304

raise (gnutls.errors.CertificateSecurityError

1365

("Verify failed"))

1305

(u"Verify failed"))

1366

1306

# New buffer for the fingerprint

1367

1307

buf = ctypes.create_string_buffer(20)

1368

1308

buf_len = ctypes.c_size_t()

1375

1315

# Convert the buffer to a Python bytestring

1376

1316

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

1377

1317

# Convert the bytestring to hexadecimal notation

1378

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

1318

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

1379

1319

return hex_fpr

1380

1320

1381

1321

1409

1349

1410

1350

def add_pipe(self, parent_pipe):

1411

1351

"""Dummy function; override as necessary"""

1412

raise NotImplementedError

1352

pass

1413

1353

1414

1354

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1415

1355

socketserver.TCPServer, object):

1433

1373

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

1434

1374

if self.interface is not None:

1435

1375

if SO_BINDTODEVICE is None:

1436

logger.error("SO_BINDTODEVICE does not exist;"

1437

" cannot bind to interface %s",

1376

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

1377

u" cannot bind to interface %s",

1438

1378

self.interface)

1439

1379

else:

1440

1380

try:

1441

1381

self.socket.setsockopt(socket.SOL_SOCKET,

1442

1382

SO_BINDTODEVICE,

1443

1383

str(self.interface

1444

+ '\0'))

1384

+ u'\0'))

1445

1385

except socket.error, error:

1446

1386

if error[0] == errno.EPERM:

1447

logger.error("No permission to"

1448

" bind to interface %s",

1387

logger.error(u"No permission to"

1388

u" bind to interface %s",

1449

1389

self.interface)

1450

1390

elif error[0] == errno.ENOPROTOOPT:

1451

logger.error("SO_BINDTODEVICE not available;"

1452

" cannot bind to interface %s",

1391

logger.error(u"SO_BINDTODEVICE not available;"

1392

u" cannot bind to interface %s",

1453

1393

self.interface)

1454

1394

else:

1455

1395

raise

1457

1397

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

1458

1398

if not self.server_address[0]:

1459

1399

if self.address_family == socket.AF_INET6:

1460

any_address = "::" # in6addr_any

1400

any_address = u"::" # in6addr_any

1461

1401

else:

1462

1402

any_address = socket.INADDR_ANY

1463

1403

self.server_address = (any_address,

1512

1452

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

1513

1453

client_object=None):

1514

1454

condition_names = {

1515

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

1516

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

1455

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

1456

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

1517

1457

# blocking).

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

1458

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

1459

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

1460

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

1521

1461

# broken, usually for pipes and

1522

1462

# sockets).

1523

1463

}

1525

1465

for cond, name in

1526

1466

condition_names.iteritems()

1527

1467

if cond & condition)

1468

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

1469

conditions_string)

1470

1528

1471

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

1529

1472

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

1530

1473

return False

1531

1474

1532

1475

# Read a request from the child

1533

1476

request = parent_pipe.recv()

1477

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

1534

1478

command = request[0]

1535

1479

1536

1480

if command == 'init':

1542

1486

client = c

1543

1487

break

1544

1488

else:

1545

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

1546

"dress: %s", fpr, address)

1489

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

1490

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

1547

1491

if self.use_dbus:

1548

1492

# Emit D-Bus signal

1549

mandos_dbus_service.ClientNotFound(fpr, address[0])

1493

mandos_dbus_service.ClientNotFound(fpr, address)

1550

1494

parent_pipe.send(False)

1551

1495

return False

1552

1496

1583

1527

def string_to_delta(interval):

1584

1528

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

1585

1529

1586

>>> string_to_delta('7d')

1530

>>> string_to_delta(u'7d')

1587

1531

datetime.timedelta(7)

1588

>>> string_to_delta('60s')

1532

>>> string_to_delta(u'60s')

1589

1533

datetime.timedelta(0, 60)

1590

>>> string_to_delta('60m')

1534

>>> string_to_delta(u'60m')

1591

1535

datetime.timedelta(0, 3600)

1592

>>> string_to_delta('24h')

1536

>>> string_to_delta(u'24h')

1593

1537

datetime.timedelta(1)

1594

>>> string_to_delta('1w')

1538

>>> string_to_delta(u'1w')

1595

1539

datetime.timedelta(7)

1596

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

1540

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

1597

1541

datetime.timedelta(0, 330)

1598

1542

"""

1599

1543

timevalue = datetime.timedelta(0)

1601

1545

try:

1602

1546

suffix = unicode(s[-1])

1603

1547

value = int(s[:-1])

1604

if suffix == "d":

1548

if suffix == u"d":

1605

1549

delta = datetime.timedelta(value)

1606

elif suffix == "s":

1550

elif suffix == u"s":

1607

1551

delta = datetime.timedelta(0, value)

1608

elif suffix == "m":

1552

elif suffix == u"m":

1609

1553

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

1610

elif suffix == "h":

1554

elif suffix == u"h":

1611

1555

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

1612

elif suffix == "w":

1556

elif suffix == u"w":

1613

1557

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

1614

1558

else:

1615

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

1559

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

1616

1560

except (ValueError, IndexError), e:

1617

raise ValueError(*(e.args))

1561

raise ValueError(e.message)

1618

1562

timevalue += delta

1619

1563

return timevalue

1620

1564

1626

1570

global if_nametoindex

1627

1571

try:

1628

1572

if_nametoindex = (ctypes.cdll.LoadLibrary

1629

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

1573

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

1630

1574

.if_nametoindex)

1631

1575

except (OSError, AttributeError):

1632

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

1576

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

1633

1577

def if_nametoindex(interface):

1634

1578

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

1635

1579

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

1636

1580

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

1637

1581

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1638

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

1582

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

1639

1583

interface))

1640

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

1584

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

1641

1585

ifreq[16:20])[0]

1642

1586

return interface_index

1643

1587

return if_nametoindex(interface)

1651

1595

sys.exit()

1652

1596

os.setsid()

1653

1597

if not nochdir:

1654

os.chdir("/")

1598

os.chdir(u"/")

1655

1599

if os.fork():

1656

1600

sys.exit()

1657

1601

if not noclose:

1659

1603

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

1660

1604

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

1661

1605

raise OSError(errno.ENODEV,

1662

"%s not a character device"

1606

u"%s not a character device"

1663

1607

% os.path.devnull)

1664

1608

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

1665

1609

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

1674

1618

# Parsing of options, both command line and config file

1675

1619

1676

1620

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

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")

1621

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

1622

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

1623

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

1624

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

1625

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

1626

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

1627

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

1628

help=u"Run self-test")

1629

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

1630

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

1631

u" terminal")

1632

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

1633

help=u"Debug level for stdout output")

1634

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

1635

u" priority string (see GnuTLS documentation)")

1636

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

1637

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

1638

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

1639

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

1640

help=u"Directory to search for configuration"

1641

u" files")

1642

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

1643

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

1644

u" system bus interface")

1645

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

1646

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

1703

1647

options = parser.parse_args()[0]

1704

1648

1705

1649

if options.check:

1708

1652

sys.exit()

1709

1653

1710

1654

# Default values for config file for server-global settings

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": "",

1655

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

1656

u"address": u"",

1657

u"port": u"",

1658

u"debug": u"False",

1659

u"priority":

1660

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

1661

u"servicename": u"Mandos",

1662

u"use_dbus": u"True",

1663

u"use_ipv6": u"True",

1664

u"debuglevel": u"",

1721

1665

}

1722

1666

1723

1667

# Parse config file for server-global settings

1724

1668

server_config = configparser.SafeConfigParser(server_defaults)

1725

1669

del server_defaults

1726

1670

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

1727

"mandos.conf"))

1671

u"mandos.conf"))

1728

1672

# Convert the SafeConfigParser object to a dict

1729

1673

server_settings = server_config.defaults()

1730

1674

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

1731

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

1732

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

1675

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

1676

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

1733

1677

option)

1734

1678

if server_settings["port"]:

1735

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

1736

"port")

1679

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

1680

u"port")

1737

1681

del server_config

1738

1682

1739

1683

# Override the settings from the config file with command line

1740

1684

# options, if set.

1741

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

1742

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

1743

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

1685

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

1686

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

1687

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

1744

1688

value = getattr(options, option)

1745

1689

if value is not None:

1746

1690

server_settings[option] = value

1754

1698

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

1755

1699

1756

1700

# For convenience

1757

debug = server_settings["debug"]

1758

debuglevel = server_settings["debuglevel"]

1759

use_dbus = server_settings["use_dbus"]

1760

use_ipv6 = server_settings["use_ipv6"]

1701

debug = server_settings[u"debug"]

1702

debuglevel = server_settings[u"debuglevel"]

1703

use_dbus = server_settings[u"use_dbus"]

1704

use_ipv6 = server_settings[u"use_ipv6"]

1761

1705

1762

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

1706

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

1763

1707

syslogger.setFormatter(logging.Formatter

1764

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

1765

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

1766

% server_settings["servicename"]))

1708

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

1709

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

1710

% server_settings[u"servicename"]))

1767

1711

1768

1712

# Parse config file with clients

1769

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

1770

"interval": "5m",

1771

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

1772

"host": "",

1773

"approval_delay": "0s",

1774

"approval_duration": "1s",

1713

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

1714

u"interval": u"5m",

1715

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

1716

u"host": u"",

1717

u"approved_delay": u"0s",

1718

u"approved_duration": u"1s",

1775

1719

}

1776

1720

client_config = configparser.SafeConfigParser(client_defaults)

1777

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

1778

"clients.conf"))

1721

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

1722

u"clients.conf"))

1779

1723

1780

1724

global mandos_dbus_service

1781

1725

mandos_dbus_service = None

1782

1726

1783

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

1784

server_settings["port"]),

1727

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

1728

server_settings[u"port"]),

1785

1729

ClientHandler,

1786

interface=(server_settings["interface"]

1787

or None),

1730

interface=server_settings[u"interface"],

1788

1731

use_ipv6=use_ipv6,

1789

1732

gnutls_priority=

1790

server_settings["priority"],

1733

server_settings[u"priority"],

1791

1734

use_dbus=use_dbus)

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)

1735

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

1736

try:

1737

pidfile = open(pidfilename, u"w")

1738

except IOError:

1739

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

1798

1740

1799

1741

try:

1800

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

1801

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

1742

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

1743

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

1802

1744

except KeyError:

1803

1745

try:

1804

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

1805

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

1746

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

1747

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

1806

1748

except KeyError:

1807

1749

try:

1808

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

1809

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

1750

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

1751

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

1810

1752

except KeyError:

1811

1753

uid = 65534

1812

1754

gid = 65534

1817

1759

if error[0] != errno.EPERM:

1818

1760

raise error

1819

1761

1762

# Enable all possible GnuTLS debugging

1763

1764

1820

1765

if not debug and not debuglevel:

1821

1766

syslogger.setLevel(logging.WARNING)

1822

1767

console.setLevel(logging.WARNING)

1826

1771

console.setLevel(level)

1827

1772

1828

1773

if debug:

1829

# Enable all possible GnuTLS debugging

1830

1831

1774

# "Use a log level over 10 to enable all debugging options."

1832

1775

# - GnuTLS manual

1833

1776

gnutls.library.functions.gnutls_global_set_log_level(11)

1834

1777

1835

1778

@gnutls.library.types.gnutls_log_func

1836

1779

def debug_gnutls(level, string):

1837

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

1780

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

1838

1781

1839

1782

(gnutls.library.functions

1840

1783

.gnutls_global_set_log_function(debug_gnutls))

1841

1784

1842

1785

# Redirect stdin so all checkers get /dev/null

1843

1786

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

1844

1787

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

1847

1790

else:

1848

1791

# No console logging

1849

1792

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()

1793

1855

1794

1856

1795

global main_loop

1857

1796

# From the Avahi example code

1861

1800

# End of Avahi example code

1862

1801

if use_dbus:

1863

1802

try:

1864

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

1803

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

1865

1804

bus, do_not_queue=True)

1866

1805

except dbus.exceptions.NameExistsException, e:

1867

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

1806

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

1868

1807

use_dbus = False

1869

server_settings["use_dbus"] = False

1808

server_settings[u"use_dbus"] = False

1870

1809

tcp_server.use_dbus = False

1871

1810

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

1872

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

1873

servicetype = "_mandos._tcp",

1811

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

1812

servicetype = u"_mandos._tcp",

1874

1813

protocol = protocol, bus = bus)

1875

1814

if server_settings["interface"]:

1876

1815

service.interface = (if_nametoindex

1877

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

1878

1816

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

1817

1818

if not debug:

1819

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

1820

daemon()

1821

1879

1822

global multiprocessing_manager

1880

1823

multiprocessing_manager = multiprocessing.Manager()

1881

1824

1900

1843

client_config, section)))

1901

1844

for section in client_config.sections()))

1902

1845

if not tcp_server.clients:

1903

logger.warning("No clients defined")

1846

logger.warning(u"No clients defined")

1904

1847

1848

try:

1849

with pidfile:

1850

pid = os.getpid()

1851

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

1852

del pidfile

1853

except IOError:

1854

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

1855

pidfilename, pid)

1856

except NameError:

1857

# "pidfile" was never created

1858

pass

1859

del pidfilename

1860

1905

1861

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

1919

1862

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

1920

1921

1863

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

1922

1864

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

1923

1865

1925

1867

class MandosDBusService(dbus.service.Object):

1926

1868

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

1927

1869

def __init__(self):

1928

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

1929

_interface = "se.bsnet.fukt.Mandos"

1870

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

1871

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

1930

1872

1931

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

1873

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

1932

1874

def ClientAdded(self, objpath):

1933

1875

"D-Bus signal"

1934

1876

pass

1935

1877

1936

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

1878

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

1937

1879

def ClientNotFound(self, fingerprint, address):

1938

1880

"D-Bus signal"

1939

1881

pass

1940

1882

1941

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

1883

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

1942

1884

def ClientRemoved(self, objpath, name):

1943

1885

"D-Bus signal"

1944

1886

pass

1945

1887

1946

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

1888

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

1947

1889

def GetAllClients(self):

1948

1890

"D-Bus method"

1949

1891

return dbus.Array(c.dbus_object_path

1950

1892

for c in tcp_server.clients)

1951

1893

1952

1894

@dbus.service.method(_interface,

1953

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

1895

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

1954

1896

def GetAllClientsWithProperties(self):

1955

1897

"D-Bus method"

1956

1898

return dbus.Dictionary(

1957

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

1899

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

1958

1900

for c in tcp_server.clients),

1959

signature="oa{sv}")

1901

signature=u"oa{sv}")

1960

1902

1961

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

1903

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

1962

1904

def RemoveClient(self, object_path):

1963

1905

"D-Bus method"

1964

1906

for c in tcp_server.clients:

2006

1948

# Find out what port we got

2007

1949

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

2008

1950

if use_ipv6:

2009

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

1951

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

2010

1952

" flowinfo %d, scope_id %d"

2011

1953

% tcp_server.socket.getsockname())

2012

1954

else: # IPv4

2013

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

1955

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

2014

1956

% tcp_server.socket.getsockname())

2015

1957

2016

1958

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

2020

1962

try:

2021

1963

service.activate()

2022

1964

except dbus.exceptions.DBusException, error:

2023

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

1965

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

2024

1966

cleanup()

2025

1967

sys.exit(1)

2026

1968

# End of Avahi example code

2030

1972

(tcp_server.handle_request

2031

1973

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

2032

1974

2033

logger.debug("Starting main loop")

1975

logger.debug(u"Starting main loop")

2034

1976

main_loop.run()

2035

1977

except AvahiError, error:

2036

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

1978

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

2037

1979

cleanup()

2038

1980

sys.exit(1)

2039

1981

except KeyboardInterrupt:

2040

1982

if debug:

2041

print("", file=sys.stderr)

2042

logger.debug("Server received KeyboardInterrupt")

2043

logger.debug("Server exiting")

1983

print >> sys.stderr

1984

logger.debug(u"Server received KeyboardInterrupt")

1985

logger.debug(u"Server exiting")

2044

1986

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

2045

1987

cleanup()

2046

1988