# -*- coding: utf-8 -*-
#
# Copyright (C) 2017 Red Hat, Inc.
#
# Authors:
# Thomas Woerner <twoerner@redhat.com>
#
# 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/>.
#
__all__ = [ "ICMP_TYPES", "ICMPV6_TYPES",
"check_icmp_type", "check_icmpv6_type" ]
ICMP_TYPES = {
# "type": (type, code, backend omit code)
"echo-reply": (0, 0, True),
"pong": (0, 0, True),
"destination-unreachable": (3, 0, True),
"network-unreachable": (3, 0, False),
"tos-network-unreachable": (3, 0, False),
"host-unreachable": (3, 1, False),
"tos-host-unreachable": (3, 1, False),
"protocol-unreachable": (3, 2, False),
"port-unreachable": (3, 3, False),
"fragmentation-needed": (3, 4, False),
"source-route-failed": (3, 5, False),
# RFC-1112 Section 3.2.2.1 defines type 3, code 6-12
"network-unknown": (3, 6, False),
"host-unknown": (3, 7, False),
"network-prohibited": (3, 9, False),
"host-prohibited": (3, 10, False),
"TOS-network-unreachable": (3, 11, False),
"TOS-host-unreachable": (3, 12, False),
# RFC-1812 Section 5.2.7.1 defines type 3, code 13-15
"communication-prohibited": (3, 13, False),
"host-precedence-violation": (3, 14, False),
"precedence-cutoff": (3, 15, False),
"source-quench": (4, 0, True),
"network-redirect": (5, 0, False),
"redirect": (5, 0, True),
"host-redirect": (5, 1, False),
"tos-host-redirect": (5, 1, False),
"TOS-network-redirect": (5, 2, False),
"tos-network-redirect": (5, 2, False),
"TOS-host-redirect": (5, 3, False),
"echo-request": (8, 0, True),
"ping": (8, 0, True),
"router-advertisement": (9, 0, True),
"router-solicitation": (10, 0, True),
"time-exceeded": (11, 0, True),
"ttl-zero-during-transit": (11, 0, False),
"ttl-zero-during-reassembly": (11, 1, False),
"parameter-problem": (12, 0, True),
"ip-header-bad": (12, 0, False),
"required-option-missing": (12, 1, False),
"timestamp-request": (13, 0, True),
"timestamp-reply": (14, 0, True),
"address-mask-request": (17, 0, False),
"address-mask-reply": (18, 0, False),
}
ICMPV6_TYPES = {
# "type": (type, code, backend omit code)
"destination-unreachable": (1, 0, True),
"no-route": (1, 0, False),
"communication-prohibited": (1, 1, False),
"beyond-scope": (1, 2, False),
"address-unreachable": (1, 3, False),
"port-unreachable": (1, 4, False),
"failed-policy": (1, 5, False),
"reject-route": (1, 6, False),
"packet-too-big": (2, 0, True),
"time-exceeded": (3, 0, True),
"ttl-zero-during-transit": (3, 0, False),
"ttl-zero-during-reassembly": (3, 1, False),
"parameter-problem": (4, 0, True),
"bad-header": (4, 0, False),
"unknown-header-type": (4, 1, False),
"unknown-option": (4, 2, False),
"echo-request": (128, 0, True),
"ping": (128, 0, True),
"echo-reply": (129, 0, True),
"pong": (129, 0, True),
"router-solicitation": (133, 0, True),
"router-advertisement": (134, 0, True),
"neighbour-solicitation": (135, 0, True),
"neigbour-solicitation": (135, 0, True),
"neighbour-advertisement": (136, 0, True),
"neigbour-advertisement": (136, 0, True),
"redirect": (137, 0, True),
# MLD is RFC-2710
"mld-listener-query": (130, 0, True),
"mld-listener-report": (131, 0, True),
"mld-listener-done": (132, 0, True),
# MLDv2 is RFC-9777
"mld2-listener-report": (143, 0, True),
}
def check_icmp_name(_name):
if _name in ICMP_TYPES:
return True
return False
def check_icmp_type_code(_type, _code):
if (_type, _code) in ICMP_TYPES.values():
return True
return False
def check_icmpv6_name(_name):
if _name in ICMPV6_TYPES:
return True
return False
def check_icmpv6_type_code(_type, _code):
if (_type, _code) in ICMPV6_TYPES.values():
return True
return False
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