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#
# minihal.py: Simple wrapper around HAL
#
# Copyright (C) 2007 Red Hat, Inc. All rights reserved.
#
# 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, see <http://www.gnu.org/licenses/>.
#
# Author(s): Bill Nottingham <notting@redhat.com>
#
"""Simple wrapper around HAL"""
import dbus
def get_device(udi):
"""Retrieve all properties of a particular device (by UDI)"""
try:
bus = dbus.SystemBus()
haldev = dbus.Interface(bus.get_object("org.freedesktop.Hal", udi), "org.freedesktop.Hal.Device")
props = haldev.GetAllProperties()
except dbus.exceptions.DBusException:
return None
if props.has_key('block.device'):
props['device'] = props['block.device'].encode("utf-8")
elif props.has_key('linux.device_file'):
props['device'] = props['linux.device_file'].encode("utf-8")
elif props.has_key('net.interface'):
props['device'] = props['net.interface'].encode("utf-8")
else:
props['device'] = None
props['description'] = ''
if props.has_key('info.product'):
if props.has_key('info.vendor'):
props['description'] = '%s %s' % (props['info.vendor'],props['info.product'])
else:
props['description'] = props['info.product']
else:
props['description'] = props['info.udi']
if props.has_key('net.originating_device'):
pdev = get_device(props['net.originating_device'])
props['description'] = pdev['description']
return props
def get_devices_by_type(type):
"""Retrieve all devices of a particular type"""
ret = []
try:
bus = dbus.SystemBus()
hal = dbus.Interface(bus.get_object("org.freedesktop.Hal","/org/freedesktop/Hal/Manager"),"org.freedesktop.Hal.Manager")
except:
return ret
for udi in hal.FindDeviceByCapability(type):
dev = get_device(udi)
if dev:
ret.append(dev)
return ret
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