/mandos/release : revision 237.25.5

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#!/usr/bin/python

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#!/usr/bin/python2.7

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# -*- mode: python; coding: utf-8 -*-

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#

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# Mandos server - give out binary blobs to connecting clients.

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# "AvahiService" class, and some lines in "main".

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#

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# Everything else is

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#

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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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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.6.1"

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if sys.version_info.major == 2:

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str = unicode

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version = "1.6.9"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = (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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syslogger = None

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try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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interface))

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

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ifreq[16:20])[0]

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struct.pack(b"16s16x", interface))

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interface_index = struct.unpack("I", ifreq[16:20])[0]

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return interface_index

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def initlogger(debug, level=logging.WARNING):

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler

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(facility =

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logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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class AvahiError(Exception):

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def __init__(self, value, *args, **kwargs):

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self.value = value

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super(AvahiError, self).__init__(value, *args, **kwargs)

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def __unicode__(self):

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return unicode(repr(self.value))

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return super(AvahiError, self).__init__(value, *args,

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**kwargs)

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class AvahiServiceError(AvahiError):

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pass

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self):

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def rename(self, remove=True):

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"""Derived from the Avahi example code"""

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if self.rename_count >= self.max_renames:

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logger.critical("No suitable Zeroconf service name found"

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

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self.name = str(self.server

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.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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

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self.name)

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self.remove()

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if remove:

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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 as error:

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logger.critical("D-Bus Exception", exc_info=error)

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self.cleanup()

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os._exit(1)

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self.rename_count += 1

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if (error.get_dbus_name()

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== "org.freedesktop.Avahi.CollisionError"):

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

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return self.rename(remove=False)

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else:

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logger.critical("D-Bus Exception", exc_info=error)

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self.cleanup()

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os._exit(1)

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def remove(self):

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"""Derived from the Avahi example code"""

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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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unicode(error))

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raise AvahiGroupError("State changed: {0!s}"

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str(error))

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raise AvahiGroupError("State changed: {!s}"

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.format(error))

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def cleanup(self):

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class AvahiServiceToSyslog(AvahiService):

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def rename(self):

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

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"""Add the new name to the syslog messages"""

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ret = AvahiService.rename(self)

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ret = AvahiService.rename(self, *args, **kwargs)

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syslogger.setFormatter(logging.Formatter

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('Mandos ({0}) [%(process)d]:'

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('Mandos ({}) [%(process)d]:'

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

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.format(self.name)))

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return ret

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def timedelta_to_milliseconds(td):

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"Convert a datetime.timedelta() to milliseconds"

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return ((td.days * 24 * 60 * 60 * 1000)

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+ (td.seconds * 1000)

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+ (td.microseconds // 1000))

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class Client(object):

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"""A representation of a client host served by this server.

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"enabled": "True",

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}

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def timeout_milliseconds(self):

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"Return the 'timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.timeout)

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def extended_timeout_milliseconds(self):

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"Return the 'extended_timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.extended_timeout)

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def interval_milliseconds(self):

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"Return the 'interval' attribute in milliseconds"

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return timedelta_to_milliseconds(self.interval)

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def approval_delay_milliseconds(self):

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return timedelta_to_milliseconds(self.approval_delay)

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@staticmethod

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def config_parser(config):

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"""Construct a new dict of client settings of this form:

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"rb") as secfile:

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client["secret"] = secfile.read()

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else:

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raise TypeError("No secret or secfile for section {0}"

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raise TypeError("No secret or secfile for section {}"

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.format(section))

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client["timeout"] = string_to_delta(section["timeout"])

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client["extended_timeout"] = string_to_delta(

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server_settings = {}

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self.server_settings = server_settings

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# adding all client settings

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for setting, value in settings.iteritems():

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for setting, value in settings.items():

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setattr(self, setting, value)

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if self.enabled:

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if self.checker_initiator_tag is not None:

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gobject.source_remove(self.checker_initiator_tag)

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self.checker_initiator_tag = (gobject.timeout_add

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(self.interval_milliseconds(),

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(int(self.interval

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.total_seconds() * 1000),

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self.start_checker))

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# Schedule a disable() when 'timeout' has passed

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if self.disable_initiator_tag is not None:

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gobject.source_remove(self.disable_initiator_tag)

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self.disable_initiator_tag = (gobject.timeout_add

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(self.timeout_milliseconds(),

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self.disable))

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(int(self.timeout

620

.total_seconds() * 1000),

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self.disable))

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# Also start a new checker *right now*.

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self.start_checker()

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624

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self.disable_initiator_tag = None

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

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self.disable_initiator_tag = (gobject.timeout_add

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(timedelta_to_milliseconds

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(timeout), self.disable))

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(int(timeout.total_seconds()

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* 1000), self.disable))

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self.expires = datetime.datetime.utcnow() + timeout

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def need_approval(self):

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# If a checker exists, make sure it is not a zombie

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try:

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pid, status = os.waitpid(self.checker.pid, os.WNOHANG)

693

except (AttributeError, OSError) as error:

694

if (isinstance(error, OSError)

695

and error.errno != errno.ECHILD):

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raise error

682

except AttributeError:

683

pass

684

except OSError as error:

685

if error.errno != errno.ECHILD:

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raise

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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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# Start a new checker if needed

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if self.checker is None:

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# Escape attributes for the shell

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escaped_attrs = dict(

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

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for attr in

709

self.runtime_expansions)

696

escaped_attrs = { attr:

697

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

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for attr in self.runtime_expansions }

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try:

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command = self.checker_command % escaped_attrs

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except TypeError as error:

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

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if byte_arrays and signature != "ay":

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

796

" signature {0!r}".format(signature))

785

" signature {!r}".format(signature))

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def decorator(func):

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func._dbus_is_property = True

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func._dbus_interface = dbus_interface

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819

"""Decorator to annotate D-Bus methods, signals or properties

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820

Usage:

832

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822

@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",

823

"org.freedesktop.DBus.Property."

824

"EmitsChangedSignal": "false"})

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@dbus_service_property("org.example.Interface", signature="b",

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access="r")

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@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",

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"org.freedesktop.DBus.Property."

837

"EmitsChangedSignal": "false"})

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def Property_dbus_property(self):

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return dbus.Boolean(False)

840

829

"""

847

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class DBusPropertyException(dbus.exceptions.DBusException):

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"""A base class for D-Bus property-related exceptions

849

838

"""

850

def __unicode__(self):

851

return unicode(str(self))

852

839

pass

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840

854

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class DBusPropertyAccessException(DBusPropertyException):

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842

"""A property's access permissions disallows an operation.

878

865

If called like _is_dbus_thing("method") it returns a function

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866

suitable for use as predicate to inspect.getmembers().

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"""

881

return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),

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return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),

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869

False)

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870

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871

def _get_all_dbus_things(self, thing):

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# The byte_arrays option is not supported yet on

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# signatures other than "ay".

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922

if prop._dbus_signature != "ay":

936

raise ValueError

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

924

"'ay' signature {!r}"

925

.format(prop._dbus_signature))

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926

value = dbus.ByteArray(b''.join(chr(byte)

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for byte in value))

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prop(value)

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value.variant_level+1)

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

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@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")

956

def PropertiesChanged(self, interface_name, changed_properties,

957

invalidated_properties):

958

"""Standard D-Bus PropertiesChanged() signal, see D-Bus

959

standard.

960

"""

961

pass

962

966

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@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

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964

out_signature="s",

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965

path_keyword='object_path',

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1000

(prop,

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1001

"_dbus_annotations",

1005

1002

{}))

1006

for name, value in annots.iteritems():

1003

for name, value in annots.items():

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1004

ann_tag = document.createElement(

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1005

"annotation")

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ann_tag.setAttribute("name", name)

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# Add interface annotation tags

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1010

for annotation, value in dict(

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1011

itertools.chain.from_iterable(

1015

annotations().iteritems()

1012

annotations().items()

1016

1013

for name, annotations in

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1014

self._get_all_dbus_things("interface")

1018

1015

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

1019

)).iteritems():

1016

)).items():

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1017

ann_tag = document.createElement("annotation")

1021

1018

ann_tag.setAttribute("name", annotation)

1022

1019

ann_tag.setAttribute("value", value)

1078

1075

"""

1079

1076

def wrapper(cls):

1080

1077

for orig_interface_name, alt_interface_name in (

1081

alt_interface_names.iteritems()):

1078

alt_interface_names.items()):

1082

1079

attr = {}

1083

1080

interface_names = set()

1084

1081

# Go though all attributes of the class

1201

1198

attribute.func_closure)))

1202

1199

if deprecate:

1203

1200

# Deprecate all alternate interfaces

1204

iname="_AlternateDBusNames_interface_annotation{0}"

1201

iname="_AlternateDBusNames_interface_annotation{}"

1205

1202

for interface_name in interface_names:

1206

1203

@dbus_interface_annotations(interface_name)

1207

1204

def func(self):

1216

1213

if interface_names:

1217

1214

# Replace the class with a new subclass of it with

1218

1215

# methods, signals, etc. as created above.

1219

cls = type(b"{0}Alternate".format(cls.__name__),

1216

cls = type(b"{}Alternate".format(cls.__name__),

1220

1217

(cls,), attr)

1221

1218

return cls

1222

1219

return wrapper

1235

1232

runtime_expansions = (Client.runtime_expansions

1236

1233

+ ("dbus_object_path",))

1237

1234

1235

_interface = "se.recompile.Mandos.Client"

1236

1238

1237

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

1239

1238

1240

1239

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

1242

1241

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

1243

1242

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

1244

1243

# the D-Bus

1245

client_object_name = unicode(self.name).translate(

1244

client_object_name = str(self.name).translate(

1246

1245

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

1247

1246

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

1248

1247

self.dbus_object_path = (dbus.ObjectPath

1252

1251

1253

1252

def notifychangeproperty(transform_func,

1254

1253

dbus_name, type_func=lambda x: x,

1255

variant_level=1):

1254

variant_level=1, invalidate_only=False,

1255

_interface=_interface):

1256

""" Modify a variable so that it's a property which announces

1257

its changes to DBus.

1258

1263

to the D-Bus. Default: no transform

1264

variant_level: D-Bus variant level. Default: 1

1265

"""

1266

attrname = "_{0}".format(dbus_name)

1266

attrname = "_{}".format(dbus_name)

1267

def setter(self, value):

1268

if hasattr(self, "dbus_object_path"):

1269

if (not hasattr(self, attrname) or

1270

type_func(getattr(self, attrname, None))

1271

!= type_func(value)):

1272

dbus_value = transform_func(type_func(value),

1273

variant_level

1274

=variant_level)

1275

self.PropertyChanged(dbus.String(dbus_name),

1276

dbus_value)

1272

if invalidate_only:

1273

self.PropertiesChanged(_interface,

1274

dbus.Dictionary(),

1275

dbus.Array

1276

((dbus_name,)))

1277

else:

1278

dbus_value = transform_func(type_func(value),

1279

variant_level

1280

=variant_level)

1281

self.PropertyChanged(dbus.String(dbus_name),

1282

dbus_value)

1283

self.PropertiesChanged(_interface,

1284

dbus.Dictionary({

1285

dbus.String(dbus_name):

1286

dbus_value }), dbus.Array())

1277

1287

setattr(self, attrname, value)

1278

1288

1279

1289

return property(lambda self: getattr(self, attrname), setter)

1299

1309

approval_delay = notifychangeproperty(dbus.UInt64,

1300

1310

"ApprovalDelay",

1301

1311

type_func =

1302

timedelta_to_milliseconds)

1312

lambda td: td.total_seconds()

1313

* 1000)

1303

1314

approval_duration = notifychangeproperty(

1304

1315

dbus.UInt64, "ApprovalDuration",

1305

type_func = timedelta_to_milliseconds)

1316

type_func = lambda td: td.total_seconds() * 1000)

1306

1317

host = notifychangeproperty(dbus.String, "Host")

1307

1318

timeout = notifychangeproperty(dbus.UInt64, "Timeout",

1308

type_func =

1309

timedelta_to_milliseconds)

1319

type_func = lambda td:

1320

td.total_seconds() * 1000)

1310

1321

extended_timeout = notifychangeproperty(

1311

1322

dbus.UInt64, "ExtendedTimeout",

1312

type_func = timedelta_to_milliseconds)

1323

type_func = lambda td: td.total_seconds() * 1000)

1313

1324

interval = notifychangeproperty(dbus.UInt64,

1314

1325

"Interval",

1315

1326

type_func =

1316

timedelta_to_milliseconds)

1327

lambda td: td.total_seconds()

1328

* 1000)

1317

1329

checker_command = notifychangeproperty(dbus.String, "Checker")

1330

secret = notifychangeproperty(dbus.ByteArray, "Secret",

1331

invalidate_only=True)

1318

1332

1319

1333

del notifychangeproperty

1320

1334

1347

1361

*args, **kwargs)

1348

1362

1349

1363

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

1350

old_checker = self.checker

1351

if self.checker is not None:

1352

old_checker_pid = self.checker.pid

1353

else:

1354

old_checker_pid = None

1364

old_checker_pid = getattr(self.checker, "pid", None)

1355

1365

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

1356

1366

# Only if new checker process was started

1357

1367

if (self.checker is not None

1366

1376

1367

1377

def approve(self, value=True):

1368

1378

self.approved = value

1369

gobject.timeout_add(timedelta_to_milliseconds

1370

(self.approval_duration),

1371

self._reset_approved)

1379

gobject.timeout_add(int(self.approval_duration.total_seconds()

1380

* 1000), self._reset_approved)

1372

1381

self.send_changedstate()

1373

1382

1374

1383

## D-Bus methods, signals & properties

1375

_interface = "se.recompile.Mandos.Client"

1376

1384

1377

1385

## Interfaces

1378

1386

1379

@dbus_interface_annotations(_interface)

1380

def _foo(self):

1381

return { "org.freedesktop.DBus.Property.EmitsChangedSignal":

1382

"false"}

1383

1384

1387

## Signals

1385

1388

1386

1389

# CheckerCompleted - signal

1396

1399

pass

1397

1400

1398

1401

# PropertyChanged - signal

1402

@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})

1399

1403

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

1400

1404

def PropertyChanged(self, property, value):

1401

1405

"D-Bus signal"

1477

1481

access="readwrite")

1478

1482

def ApprovalDelay_dbus_property(self, value=None):

1479

1483

if value is None: # get

1480

return dbus.UInt64(self.approval_delay_milliseconds())

1484

return dbus.UInt64(self.approval_delay.total_seconds()

1485

* 1000)

1481

1486

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

1482

1487

1483

1488

# ApprovalDuration - property

1485

1490

access="readwrite")

1486

1491

def ApprovalDuration_dbus_property(self, value=None):

1487

1492

if value is None: # get

1488

return dbus.UInt64(timedelta_to_milliseconds(

1489

self.approval_duration))

1493

return dbus.UInt64(self.approval_duration.total_seconds()

1494

* 1000)

1490

1495

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

1491

1496

1492

1497

# Name - property

1505

1510

def Host_dbus_property(self, value=None):

1506

1511

if value is None: # get

1507

1512

return dbus.String(self.host)

1508

self.host = unicode(value)

1513

self.host = str(value)

1509

1514

1510

1515

# Created - property

1511

1516

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

1558

1563

access="readwrite")

1559

1564

def Timeout_dbus_property(self, value=None):

1560

1565

if value is None: # get

1561

return dbus.UInt64(self.timeout_milliseconds())

1566

return dbus.UInt64(self.timeout.total_seconds() * 1000)

1562

1567

old_timeout = self.timeout

1563

1568

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

1564

1569

# Reschedule disabling

1575

1580

gobject.source_remove(self.disable_initiator_tag)

1576

1581

self.disable_initiator_tag = (

1577

1582

gobject.timeout_add(

1578

timedelta_to_milliseconds(self.expires - now),

1579

self.disable))

1583

int((self.expires - now).total_seconds()

1584

* 1000), self.disable))

1580

1585

1581

1586

# ExtendedTimeout - property

1582

1587

@dbus_service_property(_interface, signature="t",

1583

1588

access="readwrite")

1584

1589

def ExtendedTimeout_dbus_property(self, value=None):

1585

1590

if value is None: # get

1586

return dbus.UInt64(self.extended_timeout_milliseconds())

1591

return dbus.UInt64(self.extended_timeout.total_seconds()

1592

* 1000)

1587

1593

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

1588

1594

1589

1595

# Interval - property

1591

1597

access="readwrite")

1592

1598

def Interval_dbus_property(self, value=None):

1593

1599

if value is None: # get

1594

return dbus.UInt64(self.interval_milliseconds())

1600

return dbus.UInt64(self.interval.total_seconds() * 1000)

1595

1601

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

1596

1602

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

1597

1603

return

1608

1614

def Checker_dbus_property(self, value=None):

1609

1615

if value is None: # get

1610

1616

return dbus.String(self.checker_command)

1611

self.checker_command = unicode(value)

1617

self.checker_command = str(value)

1612

1618

1613

1619

# CheckerRunning - property

1614

1620

@dbus_service_property(_interface, signature="b",

1630

1636

@dbus_service_property(_interface, signature="ay",

1631

1637

access="write", byte_arrays=True)

1632

1638

def Secret_dbus_property(self, value):

1633

self.secret = str(value)

1639

self.secret = bytes(value)

1634

1640

1635

1641

del _interface

1636

1642

1670

1676

def handle(self):

1671

1677

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

1672

1678

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

1673

unicode(self.client_address))

1679

str(self.client_address))

1674

1680

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

1675

1681

self.server.child_pipe.fileno())

1676

1682

1702

1708

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

1703

1709

try:

1704

1710

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

1705

raise RuntimeError

1711

raise RuntimeError(line)

1706

1712

except (ValueError, IndexError, RuntimeError) as error:

1707

1713

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

1708

1714

return

1757

1763

if self.server.use_dbus:

1758

1764

# Emit D-Bus signal

1759

1765

client.NeedApproval(

1760

client.approval_delay_milliseconds(),

1761

client.approved_by_default)

1766

client.approval_delay.total_seconds()

1767

* 1000, client.approved_by_default)

1762

1768

else:

1763

1769

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

1764

1770

client.name)

1770

1776

#wait until timeout or approved

1771

1777

time = datetime.datetime.now()

1772

1778

client.changedstate.acquire()

1773

client.changedstate.wait(

1774

float(timedelta_to_milliseconds(delay)

1775

/ 1000))

1779

client.changedstate.wait(delay.total_seconds())

1776

1780

client.changedstate.release()

1777

1781

time2 = datetime.datetime.now()

1778

1782

if (time2 - time) >= delay:

1915

1919

1916

1920

def add_pipe(self, parent_pipe, proc):

1917

1921

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

1918

raise NotImplementedError

1922

raise NotImplementedError()

1919

1923

1920

1924

1921

1925

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1977

1981

try:

1978

1982

self.socket.setsockopt(socket.SOL_SOCKET,

1979

1983

SO_BINDTODEVICE,

1980

str(self.interface + '\0'))

1984

(self.interface + "\0")

1985

.encode("utf-8"))

1981

1986

except socket.error as error:

1982

1987

if error.errno == errno.EPERM:

1983

1988

logger.error("No permission to bind to"

2186

2191

token_duration = Token(re.compile(r"P"), None,

2187

2192

frozenset((token_year, token_month,

2188

2193

token_day, token_time,

2189

token_week))),

2194

token_week)))

2190

2195

# Define starting values

2191

2196

value = datetime.timedelta() # Value so far

2192

2197

found_token = None

2193

followers = frozenset(token_duration,) # Following valid tokens

2198

followers = frozenset((token_duration,)) # Following valid tokens

2194

2199

s = duration # String left to parse

2195

2200

# Loop until end token is found

2196

2201

while found_token is not token_end:

2243

2248

timevalue = datetime.timedelta(0)

2244

2249

for s in interval.split():

2245

2250

try:

2246

suffix = unicode(s[-1])

2251

suffix = s[-1]

2247

2252

value = int(s[:-1])

2248

2253

if suffix == "d":

2249

2254

delta = datetime.timedelta(value)

2256

2261

elif suffix == "w":

2257

2262

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

2258

2263

else:

2259

raise ValueError("Unknown suffix {0!r}"

2264

raise ValueError("Unknown suffix {!r}"

2260

2265

.format(suffix))

2261

except (ValueError, IndexError) as e:

2266

except IndexError as e:

2262

2267

raise ValueError(*(e.args))

2263

2268

timevalue += delta

2264

2269

return timevalue

2279

2284

# Close all standard open file descriptors

2280

2285

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

2281

2286

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

2282

raise OSError(errno.ENODEV,

2283

"{0} not a character device"

2287

raise OSError(errno.ENODEV, "{} not a character device"

2284

2288

.format(os.devnull))

2285

2289

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

2286

2290

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

2296

2300

2297

2301

parser = argparse.ArgumentParser()

2298

2302

parser.add_argument("-v", "--version", action="version",

2299

version = "%(prog)s {0}".format(version),

2303

version = "%(prog)s {}".format(version),

2300

2304

help="show version number and exit")

2301

2305

parser.add_argument("-i", "--interface", metavar="IF",

2302

2306

help="Bind to interface IF")

2335

2339

help="Directory to save/restore state in")

2336

2340

parser.add_argument("--foreground", action="store_true",

2337

2341

help="Run in foreground", default=None)

2342

parser.add_argument("--no-zeroconf", action="store_false",

2343

dest="zeroconf", help="Do not use Zeroconf",

2344

default=None)

2338

2345

2339

2346

options = parser.parse_args()

2340

2347

2341

2348

if options.check:

2342

2349

import doctest

2343

doctest.testmod()

2344

sys.exit()

2350

fail_count, test_count = doctest.testmod()

2351

sys.exit(os.EX_OK if fail_count == 0 else 1)

2345

2352

2346

2353

# Default values for config file for server-global settings

2347

2354

server_defaults = { "interface": "",

2358

2365

"socket": "",

2359

2366

"statedir": "/var/lib/mandos",

2360

2367

"foreground": "False",

2368

"zeroconf": "True",

2361

2369

}

2362

2370

2363

2371

# Parse config file for server-global settings

2390

2398

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

2391

2399

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

2392

2400

"use_dbus", "use_ipv6", "debuglevel", "restore",

2393

"statedir", "socket", "foreground"):

2401

"statedir", "socket", "foreground", "zeroconf"):

2394

2402

value = getattr(options, option)

2395

2403

if value is not None:

2396

2404

server_settings[option] = value

2397

2405

del options

2398

2406

# Force all strings to be unicode

2399

2407

for option in server_settings.keys():

2400

if type(server_settings[option]) is str:

2401

server_settings[option] = unicode(server_settings[option])

2408

if isinstance(server_settings[option], bytes):

2409

server_settings[option] = (server_settings[option]

2410

.decode("utf-8"))

2402

2411

# Force all boolean options to be boolean

2403

2412

for option in ("debug", "use_dbus", "use_ipv6", "restore",

2404

"foreground"):

2413

"foreground", "zeroconf"):

2405

2414

server_settings[option] = bool(server_settings[option])

2406

2415

# Debug implies foreground

2407

2416

if server_settings["debug"]:

2410

2419

2411

2420

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

2412

2421

2422

if (not server_settings["zeroconf"] and

2423

not (server_settings["port"]

2424

or server_settings["socket"] != "")):

2425

parser.error("Needs port or socket to work without"

2426

" Zeroconf")

2427

2413

2428

# For convenience

2414

2429

debug = server_settings["debug"]

2415

2430

debuglevel = server_settings["debuglevel"]

2418

2433

stored_state_path = os.path.join(server_settings["statedir"],

2419

2434

stored_state_file)

2420

2435

foreground = server_settings["foreground"]

2436

zeroconf = server_settings["zeroconf"]

2421

2437

2422

2438

if debug:

2423

2439

initlogger(debug, logging.DEBUG)

2430

2446

2431

2447

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

2432

2448

syslogger.setFormatter(logging.Formatter

2433

('Mandos ({0}) [%(process)d]:'

2449

('Mandos ({}) [%(process)d]:'

2434

2450

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

2435

2451

.format(server_settings

2436

2452

["servicename"])))

2444

2460

global mandos_dbus_service

2445

2461

mandos_dbus_service = None

2446

2462

2463

socketfd = None

2464

if server_settings["socket"] != "":

2465

socketfd = server_settings["socket"]

2447

2466

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

2448

2467

server_settings["port"]),

2449

2468

ClientHandler,

2453

2472

gnutls_priority=

2454

2473

server_settings["priority"],

2455

2474

use_dbus=use_dbus,

2456

socketfd=(server_settings["socket"]

2457

or None))

2475

socketfd=socketfd)

2458

2476

if not foreground:

2459

2477

pidfilename = "/run/mandos.pid"

2478

if not os.path.isdir("/run/."):

2479

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

2460

2480

pidfile = None

2461

2481

try:

2462

2482

pidfile = open(pidfilename, "w")

2479

2499

os.setuid(uid)

2480

2500

except OSError as error:

2481

2501

if error.errno != errno.EPERM:

2482

raise error

2502

raise

2483

2503

2484

2504

if debug:

2485

2505

# Enable all possible GnuTLS debugging

2528

2548

use_dbus = False

2529

2549

server_settings["use_dbus"] = False

2530

2550

tcp_server.use_dbus = False

2531

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2532

service = AvahiServiceToSyslog(name =

2533

server_settings["servicename"],

2534

servicetype = "_mandos._tcp",

2535

protocol = protocol, bus = bus)

2536

if server_settings["interface"]:

2537

service.interface = (if_nametoindex

2538

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

2551

if zeroconf:

2552

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2553

service = AvahiServiceToSyslog(name =

2554

server_settings["servicename"],

2555

servicetype = "_mandos._tcp",

2556

protocol = protocol, bus = bus)

2557

if server_settings["interface"]:

2558

service.interface = (if_nametoindex

2559

(server_settings["interface"]

2560

.encode("utf-8")))

2539

2561

2540

2562

global multiprocessing_manager

2541

2563

multiprocessing_manager = multiprocessing.Manager()

2565

2587

os.remove(stored_state_path)

2566

2588

except IOError as e:

2567

2589

if e.errno == errno.ENOENT:

2568

logger.warning("Could not load persistent state: {0}"

2590

logger.warning("Could not load persistent state: {}"

2569

2591

.format(os.strerror(e.errno)))

2570

2592

else:

2571

2593

logger.critical("Could not load persistent state:",

2576

2598

"EOFError:", exc_info=e)

2577

2599

2578

2600

with PGPEngine() as pgp:

2579

for client_name, client in clients_data.iteritems():

2601

for client_name, client in clients_data.items():

2580

2602

# Skip removed clients

2581

2603

if client_name not in client_settings:

2582

2604

continue

2607

2629

if datetime.datetime.utcnow() >= client["expires"]:

2608

2630

if not client["last_checked_ok"]:

2609

2631

logger.warning(

2610

"disabling client {0} - Client never "

2632

"disabling client {} - Client never "

2611

2633

"performed a successful checker"

2612

2634

.format(client_name))

2613

2635

client["enabled"] = False

2614

2636

elif client["last_checker_status"] != 0:

2615

2637

logger.warning(

2616

"disabling client {0} - Client "

2617

"last checker failed with error code {1}"

2638

"disabling client {} - Client last"

2639

" checker failed with error code {}"

2618

2640

.format(client_name,

2619

2641

client["last_checker_status"]))

2620

2642

client["enabled"] = False

2623

2645

.utcnow()

2624

2646

+ client["timeout"])

2625

2647

logger.debug("Last checker succeeded,"

2626

" keeping {0} enabled"

2648

" keeping {} enabled"

2627

2649

.format(client_name))

2628

2650

try:

2629

2651

client["secret"] = (

2632

2654

["secret"]))

2633

2655

except PGPError:

2634

2656

# If decryption fails, we use secret from new settings

2635

logger.debug("Failed to decrypt {0} old secret"

2657

logger.debug("Failed to decrypt {} old secret"

2636

2658

.format(client_name))

2637

2659

client["secret"] = (

2638

2660

client_settings[client_name]["secret"])

2646

2668

clients_data[client_name] = client_settings[client_name]

2647

2669

2648

2670

# Create all client objects

2649

for client_name, client in clients_data.iteritems():

2671

for client_name, client in clients_data.items():

2650

2672

tcp_server.clients[client_name] = client_class(

2651

2673

name = client_name, settings = client,

2652

2674

server_settings = server_settings)

2659

2681

try:

2660

2682

with pidfile:

2661

2683

pid = os.getpid()

2662

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

2684

pidfile.write("{}\n".format(pid).encode("utf-8"))

2663

2685

except IOError:

2664

2686

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

2665

2687

pidfilename, pid)

2711

2733

def GetAllClientsWithProperties(self):

2712

2734

"D-Bus method"

2713

2735

return dbus.Dictionary(

2714

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

2715

for c in tcp_server.clients.itervalues()),

2736

{ c.dbus_object_path: c.GetAll("")

2737

for c in tcp_server.clients.itervalues() },

2716

2738

signature="oa{sv}")

2717

2739

2718

2740

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

2735

2757

2736

2758

def cleanup():

2737

2759

"Cleanup function; run on exit"

2738

service.cleanup()

2760

if zeroconf:

2761

service.cleanup()

2739

2762

2740

2763

multiprocessing.active_children()

2741

2764

wnull.close()

2755

2778

2756

2779

# A list of attributes that can not be pickled

2757

2780

# + secret.

2758

exclude = set(("bus", "changedstate", "secret",

2759

"checker", "server_settings"))

2781

exclude = { "bus", "changedstate", "secret",

2782

"checker", "server_settings" }

2760

2783

for name, typ in (inspect.getmembers

2761

2784

(dbus.service.Object)):

2762

2785

exclude.add(name)

2785

2808

except NameError:

2786

2809

pass

2787

2810

if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):

2788

logger.warning("Could not save persistent state: {0}"

2811

logger.warning("Could not save persistent state: {}"

2789

2812

.format(os.strerror(e.errno)))

2790

2813

else:

2791

2814

logger.warning("Could not save persistent state:",

2792

2815

exc_info=e)

2793

raise e

2816

raise

2794

2817

2795

2818

# Delete all clients, and settings from config

2796

2819

while tcp_server.clients:

2820

2843

tcp_server.server_activate()

2821

2844

2822

2845

# Find out what port we got

2823

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

2846

if zeroconf:

2847

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

2824

2848

if use_ipv6:

2825

2849

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

2826

2850

" flowinfo %d, scope_id %d",

2832

2856

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

2833

2857

2834

2858

try:

2835

# From the Avahi example code

2836

try:

2837

service.activate()

2838

except dbus.exceptions.DBusException as error:

2839

logger.critical("D-Bus Exception", exc_info=error)

2840

cleanup()

2841

sys.exit(1)

2842

# End of Avahi example code

2859

if zeroconf:

2860

# From the Avahi example code

2861

try:

2862

service.activate()

2863

except dbus.exceptions.DBusException as error:

2864

logger.critical("D-Bus Exception", exc_info=error)

2865

cleanup()

2866

sys.exit(1)

2867

# End of Avahi example code

2843

2868

2844

2869

gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,

2845

2870

lambda *args, **kwargs: