200 lines
7.0 KiB
Python
200 lines
7.0 KiB
Python
# Copyright (C) 2007, Red Hat, Inc.
|
|
#
|
|
# 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 St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
import logging
|
|
|
|
import dbus
|
|
import gobject
|
|
|
|
|
|
_logger = logging.getLogger('s-p-s.psutils')
|
|
|
|
|
|
NM_SERVICE = 'org.freedesktop.NetworkManager'
|
|
NM_IFACE = 'org.freedesktop.NetworkManager'
|
|
NM_IFACE_DEVICES = 'org.freedesktop.NetworkManager.Devices'
|
|
NM_PATH = '/org/freedesktop/NetworkManager'
|
|
|
|
_ip4am = None
|
|
|
|
class IP4AddressMonitor(gobject.GObject):
|
|
"""This class, and direct buddy IPv4 address access, will go away quite soon"""
|
|
|
|
__gsignals__ = {
|
|
'address-changed': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
|
|
([gobject.TYPE_PYOBJECT]))
|
|
}
|
|
|
|
__gproperties__ = {
|
|
'address' : (str, None, None, None, gobject.PARAM_READABLE)
|
|
}
|
|
|
|
def get_instance():
|
|
"""Retrieve (or create) the IP4Address monitor singleton instance"""
|
|
global _ip4am
|
|
if not _ip4am:
|
|
_ip4am = IP4AddressMonitor()
|
|
return _ip4am
|
|
get_instance = staticmethod(get_instance)
|
|
|
|
def __init__(self):
|
|
gobject.GObject.__init__(self)
|
|
self._nm_present = False
|
|
self._nm_has_been_present = False
|
|
self._matches = []
|
|
self._addr = None
|
|
self._nm_obj = None
|
|
|
|
sys_bus = dbus.SystemBus()
|
|
self._watch = sys_bus.watch_name_owner(NM_SERVICE, self._nm_owner_cb)
|
|
if not sys_bus.name_has_owner(NM_SERVICE):
|
|
addr = self._get_address_fallback()
|
|
self._update_address(addr)
|
|
|
|
def do_get_property(self, pspec):
|
|
if pspec.name == "address":
|
|
return self._addr
|
|
|
|
def _update_address(self, new_addr):
|
|
if new_addr == "0.0.0.0":
|
|
new_addr = None
|
|
if new_addr == self._addr:
|
|
return
|
|
|
|
self._addr = new_addr
|
|
_logger.debug("IP4 address now '%s'" % new_addr)
|
|
self.emit('address-changed', new_addr)
|
|
|
|
def _connect_to_nm(self):
|
|
"""Connect to NM device state signals to tell when the IPv4 address changes"""
|
|
try:
|
|
sys_bus = dbus.SystemBus()
|
|
proxy = sys_bus.get_object(NM_SERVICE, NM_PATH)
|
|
self._nm_obj = dbus.Interface(proxy, NM_IFACE)
|
|
except dbus.DBusException, err:
|
|
_logger.debug("Error finding NetworkManager: %s" % err)
|
|
self._nm_present = False
|
|
return
|
|
|
|
sys_bus = dbus.SystemBus()
|
|
match = sys_bus.add_signal_receiver(self._nm_device_active_cb,
|
|
signal_name="DeviceNowActive",
|
|
dbus_interface=NM_IFACE)
|
|
self._matches.append(match)
|
|
|
|
match = sys_bus.add_signal_receiver(self._nm_device_no_longer_active_cb,
|
|
signal_name="DeviceNoLongerActive",
|
|
dbus_interface=NM_IFACE,
|
|
bus_name=NM_SERVICE)
|
|
self._matches.append(match)
|
|
|
|
match = sys_bus.add_signal_receiver(self._nm_state_change_cb,
|
|
signal_name="StateChange",
|
|
dbus_interface=NM_IFACE,
|
|
bus_name=NM_SERVICE)
|
|
self._matches.append(match)
|
|
|
|
state = self._nm_obj.state()
|
|
if state == 3: # NM_STATE_CONNECTED
|
|
self._query_devices()
|
|
|
|
def _device_properties_cb(self, *props):
|
|
active = props[4]
|
|
if not active:
|
|
return
|
|
act_stage = props[5]
|
|
# HACK: OLPC NM has an extra stage, so activated == 8 on OLPC
|
|
# but 7 everywhere else
|
|
if act_stage != 8 and act_stage != 7:
|
|
# not activated
|
|
return
|
|
self._update_address(props[6])
|
|
|
|
def _device_properties_error_cb(self, err):
|
|
_logger.debug("Error querying device properties: %s" % err)
|
|
|
|
def _query_device_properties(self, device):
|
|
sys_bus = dbus.SystemBus()
|
|
proxy = sys_bus.get_object(NM_SERVICE, device)
|
|
dev = dbus.Interface(proxy, NM_IFACE_DEVICES)
|
|
dev.getProperties(reply_handler=self._device_properties_cb,
|
|
error_handler=self._device_properties_error_cb)
|
|
|
|
def _get_devices_cb(self, ops):
|
|
"""Query each device's properties"""
|
|
for op in ops:
|
|
self._query_device_properties(op)
|
|
|
|
def _get_devices_error_cb(self, err):
|
|
_logger.debug("Error getting NetworkManager devices: %s" % err)
|
|
|
|
def _query_devices(self):
|
|
"""Query NM for a list of network devices"""
|
|
self._nm_obj.getDevices(reply_handler=self._get_devices_cb,
|
|
error_handler=self._get_devices_error_cb)
|
|
|
|
def _nm_device_active_cb(self, device, ssid=None):
|
|
self._query_device_properties(device)
|
|
|
|
def _nm_device_no_longer_active_cb(self, device):
|
|
self._update_address(None)
|
|
|
|
def _nm_state_change_cb(self, new_state):
|
|
if new_state == 4: # NM_STATE_DISCONNECTED
|
|
self._update_address(None)
|
|
|
|
def _nm_owner_cb(self, unique_name):
|
|
"""Clear state when NM goes away"""
|
|
if unique_name == '':
|
|
# NM went away, or isn't there at all
|
|
self._nm_present = False
|
|
for match in self._matches:
|
|
match.remove()
|
|
self._matches = []
|
|
if self._nm_has_been_present:
|
|
self._update_address(None)
|
|
else:
|
|
addr = self._get_address_fallback()
|
|
self._update_address(addr)
|
|
elif not self._nm_present:
|
|
# NM started up
|
|
self._nm_present = True
|
|
self._nm_has_been_present = True
|
|
self._connect_to_nm()
|
|
|
|
def _get_iface_address(self, iface):
|
|
import socket
|
|
import fcntl
|
|
import struct
|
|
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
|
|
fd = s.fileno()
|
|
SIOCGIFADDR = 0x8915
|
|
addr = fcntl.ioctl(fd, SIOCGIFADDR, struct.pack('256s', iface[:15]))[20:24]
|
|
s.close()
|
|
return socket.inet_ntoa(addr)
|
|
|
|
def _get_address_fallback(self):
|
|
import commands
|
|
(s, o) = commands.getstatusoutput("/sbin/route -n")
|
|
if s != 0:
|
|
return
|
|
for line in o.split('\n'):
|
|
fields = line.split(" ")
|
|
if fields[0] == "0.0.0.0":
|
|
iface = fields[len(fields) - 1]
|
|
return self._get_iface_address(iface)
|
|
return None
|