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|
# Network configuration proxy to NetworkManager
#
# Copyright (C) 2013 Red Hat, Inc.
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions of
# the GNU General Public License v.2, or (at your option) any later version.
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY expressed or implied, including the implied warranties 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. Any Red Hat trademarks that are incorporated in the
# source code or documentation are not subject to the GNU General Public
# License and may only be used or replicated with the express permission of
# Red Hat, Inc.
#
# Red Hat Author(s): Radek Vykydal <rvykydal@redhat.com>
#
from gi.repository import Gio, GLib
from gi.repository import NetworkManager
import struct
import socket
device_type_interfaces = {
NetworkManager.DeviceType.ETHERNET: "org.freedesktop.NetworkManager.Device.Wired",
NetworkManager.DeviceType.WIFI: "org.freedesktop.NetworkManager.Device.Wireless",
NetworkManager.DeviceType.MODEM: "org.freedesktop.NetworkManager.Device.Modem",
NetworkManager.DeviceType.BT: "org.freedesktop.NetworkManager.Device.Bluetooth",
NetworkManager.DeviceType.OLPC_MESH: "org.freedesktop.NetworkManager.Device.OlpcMesh",
NetworkManager.DeviceType.WIMAX: "org.freedesktop.NetworkManager.Device.WiMax",
NetworkManager.DeviceType.INFINIBAND: "org.freedesktop.NetworkManager.Device.Infiniband",
NetworkManager.DeviceType.BOND: "org.freedesktop.NetworkManager.Device.Bond",
NetworkManager.DeviceType.VLAN: "org.freedesktop.NetworkManager.Device.Vlan",
NetworkManager.DeviceType.ADSL: "org.freedesktop.NetworkManager.Device.Adsl"
}
class UnknownDeviceError(ValueError):
"""Device of specified name was not found by NM"""
def __str__(self):
return self.__repr__()
class PropertyNotFoundError(ValueError):
"""Property of NM object was not found"""
def __str__(self):
return self.__repr__()
class SettingNotFoundError(ValueError):
"""Setting of NMRemoteConnection was not found"""
def __str__(self):
return self.__repr__()
class DeviceSettingsNotFoundError(ValueError):
"""Settings (NMRemoteConnection object was not found"""
def __str__(self):
return self.__repr__()
def _get_proxy(bus_type=Gio.BusType.SYSTEM,
flags=Gio.DBusProxyFlags.NONE,
info=None,
name="org.freedesktop.NetworkManager",
object_path="/org/freedesktop/NetworkManager",
interface_name="org.freedesktop.NetworkManager",
cancellable=None):
proxy = Gio.DBusProxy.new_for_bus_sync(bus_type,
flags,
info,
name,
object_path,
interface_name,
cancellable)
return proxy
def nm_state():
"""Return state of NetworkManager"""
proxy = _get_proxy()
return proxy.get_cached_property("State").unpack()
# FIXME - use just GLOBAL? There is some connectivity checking
# for GLOBAL in NM (nm_connectivity_get_connected), not sure if
# and how it is implemented.
# Also see Gio g_network_monitor_can_reach.
def nm_is_connected():
"""Is NetworkManager connected?"""
return nm_state() in (NetworkManager.State.CONNECTED_GLOBAL,
NetworkManager.State.CONNECTED_SITE,
NetworkManager.State.CONNECTED_LOCAL)
def nm_is_connecting():
"""Is NetworkManager connecting?"""
return nm_state() == NetworkManager.State.CONNECTING
def nm_devices():
"""Return list of network device names"""
interfaces = []
proxy = _get_proxy()
args = None
devices = proxy.call_sync("GetDevices",
args,
Gio.DBusCallFlags.NONE,
-1,
None)
devices = devices.unpack()[0]
for device in devices:
proxy = _get_proxy(object_path=device, interface_name="org.freedesktop.NetworkManager.Device")
interfaces.append(proxy.get_cached_property("Interface").unpack())
return interfaces
def nm_activated_devices():
"""Return list of names of activated network devices"""
interfaces = []
proxy = _get_proxy()
active_connections = proxy.get_cached_property("ActiveConnections").unpack()
for ac in active_connections:
proxy = _get_proxy(object_path=ac, interface_name="org.freedesktop.NetworkManager.Connection.Active")
devices = proxy.get_cached_property("Devices").unpack()
for device in devices:
proxy = _get_proxy(object_path=device, interface_name="org.freedesktop.NetworkManager.Device")
interfaces.append(proxy.get_cached_property("Interface").unpack())
return interfaces
def nm_device_property(name, property):
"""Return value of device NM property
Exceptions:
UnknownDeviceError if device is not found
PropertyNotFoundError if property is not found
"""
retval = None
proxy = _get_proxy()
args = GLib.Variant('(s)', (name,))
try:
device = proxy.call_sync("GetDeviceByIpIface",
args,
Gio.DBusCallFlags.NONE,
-1,
None)
except Exception as e:
if "org.freedesktop.NetworkManager.UnknownDevice" in e.message:
raise UnknownDeviceError(name, e)
raise
device = device.unpack()[0]
proxy = _get_proxy(object_path=device, interface_name="org.freedesktop.NetworkManager.Device")
if property in proxy.get_cached_property_names():
retval = proxy.get_cached_property(property).unpack()
else:
# Look in device type based interface
device_type = proxy.get_cached_property("DeviceType").unpack()
proxy = _get_proxy(object_path=device, interface_name=device_type_interfaces[device_type])
if property in proxy.get_cached_property_names():
retval = proxy.get_cached_property(property).unpack()
else:
raise PropertyNotFoundError(property)
return retval
def nm_device_type_is_wifi(name):
"""Is the type of device wifi?
Exceptions:
UnknownDeviceError if device is not found
PropertyNotFoundError if type is not found
"""
return nm_device_type(name) == NetworkManager.DeviceType.WIFI
def nm_device_type_is_ethernet(name):
"""Is the type of device ethernet?
Exceptions:
UnknownDeviceError if device is not found
PropertyNotFoundError if type is not found
"""
return nm_device_type(name) == NetworkManager.DeviceType.ETHERNET
def nm_device_hwaddress(name):
"""Return device's 'HwAddress' property
Exceptions:
UnknownDeviceError if device is not found
PropertyNotFoundError if property is not found
"""
return nm_device_property(name, "HwAddress")
def nm_device_type(name):
"""Return device's 'DeviceType' property
Exceptions:
UnknownDeviceError if device is not found
PropertyNotFoundError if property is not found
"""
return nm_device_property(name, "DeviceType")
def nm_device_carrier(name):
"""Return device's 'Carrier' property
Exceptions:
UnknownDeviceError if device is not found
PropertyNotFoundError if property is not found
"""
return nm_device_property(name, "Carrier")
def nm_device_ip_addresses(name, version=4):
"""Return list of devices's IP addresses
version=4 - ipv4 addresses
version=6 - ipv6 addresses
Exceptions:
UnknownDeviceError if device is not found
PropertyNotFoundError if ip configuration is not found
"""
retval = []
state = nm_device_property(name, "State")
if state != NetworkManager.DeviceState.ACTIVATED:
return []
if version == 4:
dbus_iface = "org.freedesktop.NetworkManager.IP4Config"
property = "Ip4Config"
elif version == 6:
dbus_iface = "org.freedesktop.NetworkManager.IP6Config"
property = "Ip6Config"
else:
return []
config = nm_device_property(name, property)
if config == "/":
return []
proxy = _get_proxy(object_path=config, interface_name=dbus_iface)
addresses = proxy.get_cached_property("Addresses").unpack()
for addr, prefix, gateway in addresses:
# TODO - look for a library function
if version == 4:
tmp = struct.pack('I', addr)
addr_str = socket.inet_ntop(socket.AF_INET, tmp)
elif version == 6:
addr_str = socket.inet_ntop(socket.AF_INET6, "".join(chr(byte) for byte in addr))
else:
continue
retval.append(addr_str)
return retval
def _device_settings(name):
"""Return object path of device setting
Returns None if settings were not found.
Exceptions:
UnknownDeviceError - device was not found
"""
hwaddr_str = nm_device_hwaddress(name)
return _settings_for_hwaddr(hwaddr_str)
def _settings_for_ap(ssid):
"""Return object path of wireless access point settings.
Returns None if settings were not found.
` """
return _find_settings(ssid, '802-11-wireless', 'ssid',
format_value=lambda ba: "".join(chr(b) for b in ba))
def _settings_for_hwaddr(hwaddr):
"""Return object path of settings of device specified by hw address.
Returns None if settings were not found.
"""
return _find_settings(hwaddr, '802-3-ethernet', 'mac-address',
format_value=lambda ba: ":".join("%02X" % b for b in ba))
def _find_settings(value, key1, key2, format_value=lambda x:x):
"""Return object path of settings having given value of key1, key2 setting
Returns None if settings were not found.
"""
retval = None
proxy = _get_proxy(object_path="/org/freedesktop/NetworkManager/Settings", interface_name="org.freedesktop.NetworkManager.Settings")
args = None
connections = proxy.call_sync("ListConnections",
args,
Gio.DBusCallFlags.NONE,
-1,
None)
for con in connections.unpack()[0]:
proxy = _get_proxy(object_path=con, interface_name="org.freedesktop.NetworkManager.Settings.Connection")
args = None
settings = proxy.call_sync("GetSettings",
args,
Gio.DBusCallFlags.NONE,
-1,
None)
settings = settings.unpack()[0]
try:
v = settings[key1][key2]
except KeyError:
continue
if format_value(v) == value:
retval = con
break
return retval
def nm_device_setting_value(name, key1, key2):
"""Return value of device's setting specified by key1 and key2.
Return None if the setting is not found which means NM will use
default value for the setting. We can't validate that keys
actually correspond to a setting (see "connection" "autoconnect"
setting).
Caller should handle None as default value.
Exceptions:
UnknownDeviceError - device was not found
DeviceSettingsNotFoundError - settings were not found (eg for "wlan0")
"""
settings_path = _device_settings(name)
if not settings_path:
raise DeviceSettingsNotFoundError(name)
proxy = _get_proxy(object_path=settings_path, interface_name="org.freedesktop.NetworkManager.Settings.Connection")
args = None
settings = proxy.call_sync("GetSettings",
args,
Gio.DBusCallFlags.NONE,
-1,
None)
settings = settings.unpack()[0]
try:
value = settings[key1][key2]
except KeyError:
#raise SettingNotFoundError(key1, key2)
value = None
return value
def _update_settings_libdbus(settings_path, key1, key2, value):
"""Update setting key1, key2 with value."""
import dbus
con = dbus.SystemBus().get_object("org.freedesktop.NetworkManager", settings_path)
settings = con.GetSettings()
try:
# TODO: create key1 if missing?
settings[key1][key2] = value
except KeyError:
return False
con.Update(settings)
return True
def nm_update_settings_of_device(name, key1, key2, value):
"""Update setting key1, key2 of device name with value.
Exceptions:
UnknownDeviceError - device was not found
DeviceSettingsNotFoundError - settings were not found (eg for "wlan0")
"""
settings_path = _device_settings(name)
if not settings_path:
raise DeviceSettingsNotFoundError(name)
return _update_settings_libdbus(_device_settings(name), key1, key2, value)
#def _update_settings(settings_path, key1, key2, value):
# """Update settings"""
# proxy = _get_proxy(object_path=settings_path, interface_name="org.freedesktop.NetworkManager.Settings.Connection")
# args = None
# settings = proxy.call_sync("GetSettings",
# args,
# Gio.DBusCallFlags.NONE,
# -1,
# None)
# # FIXME need to figure out how to create updated
# # GVariant and convert value to GVariant
# # to do this: settings[0][key1][key2] = value
# proxy.call_sync("Update",
# settings,
# Gio.DBusCallFlags.NONE,
# -1,
# None)
#
if __name__ == "__main__":
print "NM state: %s:" % nm_state()
print "NM is connected: %s" % nm_is_connected()
print "Devices: %s" % nm_devices()
print "Activated devices: %s" % nm_activated_devices()
wireless_device = ""
devs = nm_devices()
devs.append("nonexisting")
for devname in devs:
print devname
try:
type = nm_device_type(devname)
except UnknownDeviceError as e:
print " %s" % e
type = None
if type == NetworkManager.DeviceType.ETHERNET:
print " type %s" % "ETHERNET"
elif type == NetworkManager.DeviceType.WIFI:
print " type %s" % "WIFI"
wireless_device = devname
try:
print " Wifi device: %s" % nm_device_type_is_wifi(devname)
except UnknownDeviceError as e:
print " %s" % e
try:
hwaddr = nm_device_hwaddress(devname)
print " HwAaddress: %s" % hwaddr
except ValueError as e:
print " %s" % e
hwaddr = ""
try:
print " Carrier: %s" % nm_device_carrier(devname)
except ValueError as e:
print " %s" % e
try:
print " IP4 addrs: %s" % nm_device_ip_addresses(devname)
print " IP6 addrs: %s" % nm_device_ip_addresses(devname, version=6)
print " Udi: %s" % nm_device_property(devname, "Udi")
except UnknownDeviceError as e:
print " %s" % e
if devname in nm_devices():
try:
print " Nonexisting: %s" % nm_device_property(devname, "Nonexisting")
except PropertyNotFoundError as e:
print " %s" % e
try:
print " Nonexisting: %s" % nm_device_property(devname, "Nonexisting")
except ValueError as e:
print " %s" % e
try:
print " Settings: %s" % _device_settings(devname)
except UnknownDeviceError as e:
print " %s" % e
try:
print " Settings for hwaddr %s: %s" % (hwaddr, _settings_for_hwaddr(hwaddr))
except UnknownDeviceError as e:
print " %s" % e
try:
print " Setting value %s %s: %s" % ("ipv6", "method", nm_device_setting_value(devname, "ipv6", "method"))
except ValueError as e:
print " %s" % e
try:
print " Setting value %s %s: %s" % ("ipv7", "method", nm_device_setting_value(devname, "ipv7", "method"))
except ValueError as e:
print " %s" % e
ssid = "Red Hat Guest"
print "Settings for AP %s: %s" % (ssid, _settings_for_ap(ssid))
ssid = "nonexisting"
print "Settings for AP %s: %s" % (ssid, _settings_for_ap(ssid))
devname = devs[0]
key1 = "connection"
key2 = "autoconnect"
original_value = nm_device_setting_value(devname, key1, key2)
print "Setting value %s %s: %s" % (key1, key2, original_value)
# None means default in this case, which is true
if original_value in (None, True):
new_value = False
else:
new_value = True
print "Updating to %s" % new_value
nm_update_settings_of_device(devname, key1, key2, new_value)
print "Setting value %s %s: %s" % (key1, key2, nm_device_setting_value(devname, key1, key2))
nm_update_settings_of_device(devname, key1, "nonexisting", new_value)
nm_update_settings_of_device(devname, "nonexisting", "nonexisting", new_value)
try:
nm_update_settings_of_device("nonexixting", key1, key2, new_value)
except UnknownDeviceError as e:
print "%s" % e
if wireless_device:
try:
nm_update_settings_of_device(wireless_device, key1, key2, new_value)
except DeviceSettingsNotFoundError as e:
print "%s" % e
|