/mandos/trunk

#!/usr/bin/python

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

# 

# Mandos Monitor - Control and monitor the Mandos server

# 

# Copyright © 2008-2010 Teddy Hogeborn

# Copyright © 2008-2010 Björn Påhlsson

# 

# This program is free software: you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

#

#     This program is distributed in the hope that it will be useful,

#     but WITHOUT ANY WARRANTY; without even the implied warranty of

#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

#     GNU General Public License for more details.

# 

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# 

# Contact the authors at <mandos@fukt.bsnet.se>.

# 

from __future__ import division

import sys

import dbus

from optparse import OptionParser

import locale

import datetime

import re

import os

locale.setlocale(locale.LC_ALL, u"")

tablewords = {

    u"Name": u"Name",

    u"Enabled": u"Enabled",

    u"Timeout": u"Timeout",

    u"LastCheckedOK": u"Last Successful Check",

    u"LastApprovalRequest": u"Last Approval Request",

    u"Created": u"Created",

    u"Interval": u"Interval",

    u"Host": u"Host",

    u"Fingerprint": u"Fingerprint",

    u"CheckerRunning": u"Check Is Running",

    u"LastEnabled": u"Last Enabled",

    u"ApprovalPending": u"Approval Is Pending",

    u"ApprovedByDefault": u"Approved By Default",

    u"ApprovalDelay": u"Approval Delay",

    u"ApprovalDuration": u"Approval Duration",

    u"Checker": u"Checker",

    }

defaultkeywords = (u"Name", u"Enabled", u"Timeout", u"LastCheckedOK")

domain = u"se.bsnet.fukt"

busname = domain + u".Mandos"

server_path = u"/"

server_interface = domain + u".Mandos"

client_interface = domain + u".Mandos.Client"

version = u"1.2.3"

def timedelta_to_milliseconds(td):

    """Convert a datetime.timedelta object to milliseconds"""

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

            + (td.seconds * 1000)

            + (td.microseconds // 1000))

def milliseconds_to_string(ms):

    td = datetime.timedelta(0, 0, 0, ms)

    return (u"%(days)s%(hours)02d:%(minutes)02d:%(seconds)02d"

            % { u"days": u"%dT" % td.days if td.days else u"",

                u"hours": td.seconds // 3600,

                u"minutes": (td.seconds % 3600) // 60,

                u"seconds": td.seconds % 60,

                })

def string_to_delta(interval):

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

    >>> string_to_delta("7d")

    datetime.timedelta(7)

    >>> string_to_delta("60s")

    datetime.timedelta(0, 60)

    >>> string_to_delta("60m")

    datetime.timedelta(0, 3600)

    >>> string_to_delta("24h")

    datetime.timedelta(1)

    >>> string_to_delta(u"1w")

    datetime.timedelta(7)

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

    datetime.timedelta(0, 330)

    """

    timevalue = datetime.timedelta(0)

    regexp = re.compile(u"\d+[dsmhw]")

    for s in regexp.findall(interval):

        try:

            suffix = unicode(s[-1])

            value = int(s[:-1])

            if suffix == u"d":

                delta = datetime.timedelta(value)

            elif suffix == u"s":

                delta = datetime.timedelta(0, value)

            elif suffix == u"m":

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

            elif suffix == u"h":

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

            elif suffix == u"w":

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

            else:

                raise ValueError

        except (ValueError, IndexError):

            raise ValueError

        timevalue += delta

    return timevalue

def print_clients(clients, keywords):

    def valuetostring(value, keyword):

        if type(value) is dbus.Boolean:

            return u"Yes" if value else u"No"

        if keyword in (u"Timeout", u"Interval", u"ApprovalDelay",

                       u"ApprovalDuration"):

            return milliseconds_to_string(value)

        return unicode(value)

    # Create format string to print table rows

    format_string = u" ".join(u"%%-%ds" %

                              max(len(tablewords[key]),

                                  max(len(valuetostring(client[key],

                                                        key))

                                      for client in

                                      clients))

                              for key in keywords)

    # Print header line

    print format_string % tuple(tablewords[key] for key in keywords)

    for client in clients:

        print format_string % tuple(valuetostring(client[key], key)

                                    for key in keywords)

def has_actions(options):

    return any((options.enable,

                options.disable,

                options.bump_timeout,

                options.start_checker,

                options.stop_checker,

                options.is_enabled,

                options.remove,

                options.checker is not None,

                options.timeout is not None,

                options.interval is not None,

                options.approved_by_default is not None,

                options.approval_delay is not None,

                options.approval_duration is not None,

                options.host is not None,

                options.secret is not None,

                options.approve,

                options.deny))

def main():

	parser = OptionParser(version = u"%%prog %s" % version)

	parser.add_option(u"-a", u"--all", action=u"store_true",

	                  help=u"Select all clients")

	parser.add_option(u"-v", u"--verbose", action=u"store_true",

	                  help=u"Print all fields")

	parser.add_option(u"-e", u"--enable", action=u"store_true",

	                  help=u"Enable client")

	parser.add_option(u"-d", u"--disable", action=u"store_true",

	                  help=u"disable client")

	parser.add_option(u"-b", u"--bump-timeout", action=u"store_true",

	                  help=u"Bump timeout for client")

	parser.add_option(u"--start-checker", action=u"store_true",

	                  help=u"Start checker for client")

	parser.add_option(u"--stop-checker", action=u"store_true",

	                  help=u"Stop checker for client")

	parser.add_option(u"-V", u"--is-enabled", action=u"store_true",

	                  help=u"Check if client is enabled")

	parser.add_option(u"-r", u"--remove", action=u"store_true",

	                  help=u"Remove client")

	parser.add_option(u"-c", u"--checker", type=u"string",

	                  help=u"Set checker command for client")

	parser.add_option(u"-t", u"--timeout", type=u"string",

	                  help=u"Set timeout for client")

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

	                  help=u"Set checker interval for client")

        parser.add_option(u"--approve-by-default", action=u"store_true",

                          dest=u"approved_by_default",

                          help=u"Set client to be approved by default")

        parser.add_option(u"--deny-by-default", action=u"store_false",

                          dest=u"approved_by_default",

                          help=u"Set client to be denied by default")

        parser.add_option(u"--approval-delay", type=u"string",

                          help=u"Set delay before client approve/deny")

        parser.add_option(u"--approval-duration", type=u"string",

                          help=u"Set duration of one client approval")

	parser.add_option(u"-H", u"--host", type=u"string",

	                  help=u"Set host for client")

	parser.add_option(u"-s", u"--secret", type=u"string",

	                  help=u"Set password blob (file) for client")

	parser.add_option(u"-A", u"--approve", action=u"store_true",

	                  help=u"Approve any current client request")

	parser.add_option(u"-D", u"--deny", action=u"store_true",

	                  help=u"Deny any current client request")

	options, client_names = parser.parse_args()

        if has_actions(options) and not client_names and not options.all:

            parser.error(u"Options require clients names or --all.")

        if options.verbose and has_actions(options):

            parser.error(u"--verbose can only be used alone or with"

                         u" --all.")

        if options.all and not has_actions(options):

            parser.error(u"--all requires an action.")

        try:

            bus = dbus.SystemBus()

            mandos_dbus_objc = bus.get_object(busname, server_path)

        except dbus.exceptions.DBusException:

            print >> sys.stderr, u"Could not connect to Mandos server"

            sys.exit(1)

        mandos_serv = dbus.Interface(mandos_dbus_objc,

                                     dbus_interface = server_interface)

        #block stderr since dbus library prints to stderr

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

        stderrcopy = os.dup(sys.stderr.fileno())

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

        os.close(null)

        try:

            try:

                mandos_clients = mandos_serv.GetAllClientsWithProperties()

            finally:

                #restore stderr

                os.dup2(stderrcopy, sys.stderr.fileno())

                os.close(stderrcopy)

        except dbus.exceptions.DBusException, e:

            print >> sys.stderr, u"Access denied: Accessing mandos server through dbus."

            sys.exit(1)

	# Compile dict of (clients: properties) to process

	clients={}

        if options.all or not client_names:

            clients = dict((bus.get_object(busname, path), properties)

                           for path, properties in

                           mandos_clients.iteritems())

        else:

            for name in client_names:

                for path, client in mandos_clients.iteritems():

                    if client[u"Name"] == name:

                        client_objc = bus.get_object(busname, path)

                        clients[client_objc] = client

                        break

                else:

                    print >> sys.stderr, u"Client not found on server: %r" % name

                    sys.exit(1)

	if not has_actions(options) and clients:

	    if options.verbose:

	        keywords = (u"Name", u"Enabled", u"Timeout",

                            u"LastCheckedOK", u"Created", u"Interval",

                            u"Host", u"Fingerprint", u"CheckerRunning",

                            u"LastEnabled", u"ApprovalPending",

                            u"ApprovedByDefault",

                            u"LastApprovalRequest", u"ApprovalDelay",

                            u"ApprovalDuration", u"Checker")

            else:

                keywords = defaultkeywords

	    print_clients(clients.values(), keywords)

        else:

            # Process each client in the list by all selected options

            for client in clients:

                if options.remove:

                    mandos_serv.RemoveClient(client.__dbus_object_path__)

                if options.enable:

                    client.Enable(dbus_interface=client_interface)

                if options.disable:

                    client.Disable(dbus_interface=client_interface)

                if options.bump_timeout:

                    client.CheckedOK(dbus_interface=client_interface)

                if options.start_checker:

                    client.StartChecker(dbus_interface=client_interface)

                if options.stop_checker:

                    client.StopChecker(dbus_interface=client_interface)

                if options.is_enabled:

                    sys.exit(0 if client.Get(client_interface,

                                             u"Enabled",

                                             dbus_interface=dbus.PROPERTIES_IFACE)

                             else 1)

                if options.checker:

                    client.Set(client_interface, u"Checker", options.checker,

                               dbus_interface=dbus.PROPERTIES_IFACE)

                if options.host:

                    client.Set(client_interface, u"Host", options.host,

                               dbus_interface=dbus.PROPERTIES_IFACE)

                if options.interval:

                    client.Set(client_interface, u"Interval",

                               timedelta_to_milliseconds

                               (string_to_delta(options.interval)),

                               dbus_interface=dbus.PROPERTIES_IFACE)

                if options.approval_delay:

                    client.Set(client_interface, u"ApprovalDelay",

                               timedelta_to_milliseconds

                               (string_to_delta(options.

                                                approval_delay)),

                               dbus_interface=dbus.PROPERTIES_IFACE)

                if options.approval_duration:

                    client.Set(client_interface, u"ApprovalDuration",

                               timedelta_to_milliseconds

                               (string_to_delta(options.

                                                approval_duration)),

                               dbus_interface=dbus.PROPERTIES_IFACE)

                if options.timeout:

                    client.Set(client_interface, u"Timeout",

                               timedelta_to_milliseconds

                               (string_to_delta(options.timeout)),

                               dbus_interface=dbus.PROPERTIES_IFACE)

                if options.secret:

                    client.Set(client_interface, u"Secret",

                               dbus.ByteArray(open(options.secret,

                                                   u"rb").read()),

                               dbus_interface=dbus.PROPERTIES_IFACE)

                if options.approved_by_default is not None:

                    client.Set(client_interface, u"ApprovedByDefault",

                               dbus.Boolean(options

                                            .approved_by_default),

                               dbus_interface=dbus.PROPERTIES_IFACE)

                if options.approve:

                    client.Approve(dbus.Boolean(True),

                                   dbus_interface=client_interface)

                elif options.deny:

                    client.Approve(dbus.Boolean(False),

                                   dbus_interface=client_interface)

if __name__ == u"__main__":

    main()