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"""
NETCONF for APK Distributions server:
ietf-ip module
Copyright © 2020 Adélie Software in the Public Benefit, Inc.
Released under the terms of the NCSA license. See the LICENSE file included
with this source distribution for more information.
SPDX-License-Identifier: NCSA
"""
import logging
from lxml.etree import QName # pylint: disable=E0611
from netconf import util
from ncserver.base.util import _
from ncserver.util import get_nmsa
LOGGER = logging.getLogger(__name__)
"""The object used for logging informational messages."""
M_ABI_VERSION = 1
"""The ABI version of this NETCONF module."""
M_PREFIX = "ip"
"""The XML tag prefix for this module's tags."""
M_NS = "urn:ietf:params:xml:ns:yang:ietf-ip"
"""The XML namespace for this module."""
M_NAME = "ietf-ip"
"""The YANG model name for this module."""
M_REVISION = "2018-02-22"
"""The YANG revision date for this module."""
M_IMPORTS = {
'ietf-inet-types@2013-07-15': {
'ns': "urn:ietf:params:xml:ns:yang:ietf-inet-types", 'prefix': "inet"
},
'ietf-yang-types@2013-07-15': {
'ns': "urn:ietf:params:xml:ns:yang:ietf-yang-types", 'prefix': "yang"
}
}
"""The imported YANG modules for this module."""
M_FEATURES = ('ipv6-privacy-autoconf',)
"""The supported features declared in YANG for this module."""
IF_NS = "urn:ietf:params:xml:ns:yang:ietf-interfaces"
"""The namespace of the ietf-interfaces module."""
M_AUGMENTS = (IF_NS,)
"""The namespaces that this YANG module augments."""
def _get_ifaces(node):
"""Retrieve the /if:interfaces node."""
ifaces = node.find('{'+IF_NS+'}interfaces')
if ifaces is None:
LOGGER.error(_("interfaces node not found: "
"This module requires ietf-interfaces to be loaded"))
return ifaces
def from_bool(value: bool) -> str:
"""Turn a Python bool into an XML bool."""
return str(value).lower()
def _add_ipv4(iface, getter):
"""Add IPv4 configuration nodes."""
name = iface.find('{'+IF_NS+'}name').text
ipv4 = util.subelm(iface, 'ip:ipv4')
#ipv4.append(util.leaf_elm('ip:enabled',
# from_bool(getter(name, 'ipv4_enabled'))))
ipv4.append(util.leaf_elm('ip:forwarding',
from_bool(getter(name, 'ipv4_forwarding'))))
v4mtu = getter(name, 'ipv4_mtu')
if v4mtu is not None:
ipv4.append(util.leaf_elm('ip:mtu', v4mtu - 28))
return ipv4
def _add_ipv6(iface, getter):
"""Add IPv6 configuration nodes."""
name = iface.find('{'+IF_NS+'}name').text
ipv6 = util.subelm(iface, 'ip:ipv6')
ipv6.append(util.leaf_elm('ip:enabled',
from_bool(getter(name, 'ipv6_enabled'))))
ipv6.append(util.leaf_elm('ip:forwarding',
from_bool(getter(name, 'ipv6_forwarding'))))
v6mtu = getter(name, 'ipv6_mtu')
if v6mtu is not None:
ipv6.append(util.leaf_elm('ip:mtu', v6mtu))
ipv6.append(
util.leaf_elm('ip:dup-addr-detect-transmits',
getter(name, 'ipv6_dad_xmit'))
)
if any((getter(name, 'ipv6_slaac_globaladdr'),
getter(name, 'ipv6_slaac_tempaddr'))):
autoconf = util.subelm(ipv6, 'ip:autoconf')
autoconf.append(util.leaf_elm('ip:create-global-addresses',
from_bool(
getter(name, 'ipv6_slaac_globaladdr')
)))
autoconf.append(util.leaf_elm('ip:create-temporary-addresses',
from_bool(
getter(name, 'ipv6_slaac_tempaddr')
)))
autoconf.append(util.leaf_elm('ip:temporary-valid-lifetime',
getter(name, 'ipv6_slaac_validlft')))
autoconf.append(util.leaf_elm('ip:temporary-preferred-lifetime',
getter(name, 'ipv6_slaac_preflft')))
return ipv6
def running(node):
"""Retrieve the IP configuration for this device."""
ifaces = _get_ifaces(node)
nmsa = get_nmsa()
if None in (ifaces, nmsa):
# We can't retrieve configuration unless both the ietf-interfaces and
# the NMSA module is loaded.
return
for iface in ifaces.iterchildren():
name = iface.find('{'+IF_NS+'}name').text
# IPv4
ipv4 = _add_ipv4(iface, nmsa.get_param)
for address in nmsa.list_addresses(name):
# Only IPv4 addresses count.
if '.' not in address:
continue
ipaddr, subnet = address.split('/')
addr = util.subelm(ipv4, 'ip:address')
addr.append(util.leaf_elm('ip:ip', ipaddr))
addr.append(util.leaf_elm('ip:prefix-length', subnet))
# No neighbor support.
# IPv6
ipv6 = _add_ipv6(iface, nmsa.get_param)
for address in nmsa.list_addresses(name):
# Only IPv6 addesses count.
if ':' not in address:
continue
ipaddr, length = address.split('/')
addr = util.subelm(ipv6, 'ip:address')
addr.append(util.leaf_elm('ip:ip', ipaddr))
addr.append(util.leaf_elm('ip:prefix-length', length))
# No neighbor support.
def operational(node):
"""Retrieve the IP state for this device."""
ifaces = _get_ifaces(node)
nmsa = get_nmsa()
if None in (ifaces, nmsa):
# We can't retrieve configuration unless both the ietf-interfaces and
# the NMSA module is loaded.
return
for iface in ifaces.iterchildren():
# IPv4
_add_ipv4(iface, nmsa.curr_param)
# IPv6
_add_ipv6(iface, nmsa.curr_param)
def edit(session, rpc, node, def_op):
"""Edit the IP configuration for this device."""
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