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#!/usr/bin/python

# (c) 2008 Canonical Ltd.
#
# 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 2 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, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

'''Jockey D-BUS backend executable.'''

import sys, optparse, logging, gettext

import jockey.backend
from jockey.oslib import OSLib

def parse_argv():
    '''Parse command line arguments, and return (options, args) pair.'''

    parser = optparse.OptionParser()
    parser.add_option ('--debug', action='store_true',
        dest='debug', default=False,
        help=_('Enable debugging messages.'))
    parser.add_option ('-l', '--logfile', type='string', metavar='FILE',
        dest='logfile', default=None,
        help=_('Write logging messages to a file instead to stderr.'))
    parser.add_option ( '--timeout', type='int',
        dest='timeout', metavar='SECS', default=600,
        help=_('Timeout for D-BUS service (default: 600, 0: run forever)'))
    parser.add_option ('-H', '--handler-dir',
        type='string', dest='handler_dir', metavar='DIR', default=None,
        help=_('Add a custom handler directory.'))
    parser.add_option ( '--test', action='store_true',
        dest='test', default=False,
        help=_('Run on session D-BUS (only for testing)'))
    parser.add_option ( '-k', '--kernel', type='string',
        help=_('Use a different target kernel version than the currently running one.'))

    (opts, args) = parser.parse_args()
    return (opts, args)

def setup_logging(debug=False, logfile=None):
    '''Setup logging.'''

    logging.raiseExceptions = False
    if debug:
        logging.basicConfig(level=logging.DEBUG, filename=logfile,
            format='%(asctime)s %(levelname)s: %(message)s')
    else:
        logging.basicConfig(level=logging.WARNING, filename=logfile,
            format='%(levelname)s: %(message)s')

gettext.install('jockey', unicode=True)
argv_options, argv_args = parse_argv()
setup_logging(argv_options.debug, argv_options.logfile)

OSLib.inst = OSLib(target_kernel=argv_options.kernel)
if argv_options.test:
    svr = jockey.backend.Backend.create_dbus_server(session_bus=True,
        handler_dir=argv_options.handler_dir)
else:
    svr = jockey.backend.Backend.create_dbus_server(
        handler_dir=argv_options.handler_dir)
if argv_options.timeout == 0:
    svr.run_dbus_service()
else:
    svr.run_dbus_service(argv_options.timeout)