X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=resources%2Ftraffic_scripts%2Fsend_rs_check_ra.py;fp=resources%2Ftraffic_scripts%2Fsend_rs_check_ra.py;h=0000000000000000000000000000000000000000;hp=c9ff46528ae94360108d17e13c264bffc4bc32bd;hb=d68951ac245150eeefa6e0f4156e4c1b5c9e9325;hpb=ed0258a440cfad7023d643f717ab78ac568dc59b diff --git a/resources/traffic_scripts/send_rs_check_ra.py b/resources/traffic_scripts/send_rs_check_ra.py deleted file mode 100755 index c9ff46528a..0000000000 --- a/resources/traffic_scripts/send_rs_check_ra.py +++ /dev/null @@ -1,127 +0,0 @@ -#!/usr/bin/env python -# Copyright (c) 2016 Cisco and/or its affiliates. -# Licensed under the Apache License, Version 2.0 (the "License"); -# you may not use this file except in compliance with the License. -# You may obtain a copy of the License at: -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, -# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -# See the License for the specific language governing permissions and -# limitations under the License. - -"""Router solicitation check script.""" - -import sys -import ipaddress - -from scapy.layers.l2 import Ether -from scapy.layers.inet6 import IPv6, ICMPv6ND_RA, ICMPv6ND_RS, ICMPv6ND_NS - -from resources.libraries.python.PacketVerifier import RxQueue, TxQueue -from resources.libraries.python.TrafficScriptArg import TrafficScriptArg - - -def mac_to_ipv6_linklocal(mac): - """Transfer MAC address into specific link-local IPv6 address. - - :param mac: MAC address to be transferred. - :type mac: str - :return: IPv6 link-local address. - :rtype: str - """ - # Remove the most common delimiters: dots, dashes, etc. - mac_value = int(mac.translate(None, ' .:-'), 16) - - # Split out the bytes that slot into the IPv6 address - # XOR the most significant byte with 0x02, inverting the - # Universal / Local bit - high2 = mac_value >> 32 & 0xffff ^ 0x0200 - high1 = mac_value >> 24 & 0xff - low1 = mac_value >> 16 & 0xff - low2 = mac_value & 0xffff - - return 'fe80::{:04x}:{:02x}ff:fe{:02x}:{:04x}'.format( - high2, high1, low1, low2) - - -def main(): - """Send Router Solicitation packet, check if the received response\ - is a Router Advertisement packet and verify.""" - - args = TrafficScriptArg( - ['src_mac', 'dst_mac', 'src_ip'] - ) - - router_mac = args.get_arg('dst_mac') - src_mac = args.get_arg('src_mac') - src_ip = args.get_arg('src_ip') - if not src_ip: - src_ip = mac_to_ipv6_linklocal(src_mac) - tx_if = args.get_arg('tx_if') - - txq = TxQueue(tx_if) - rxq = RxQueue(tx_if) - - pkt_raw = (Ether(src=src_mac, dst='33:33:00:00:00:02') / - IPv6(src=src_ip, dst='ff02::2') / - ICMPv6ND_RS()) - - sent_packets = [pkt_raw] - txq.send(pkt_raw) - - while True: - ether = rxq.recv(2, sent_packets) - if ether is None: - raise RuntimeError('ICMP echo Rx timeout') - - if ether.haslayer(ICMPv6ND_NS): - # read another packet in the queue if the current one is ICMPv6ND_NS - continue - else: - # otherwise process the current packet - break - - # Check whether received packet contains layer RA and check other values - if ether.src != router_mac: - raise RuntimeError('Packet source MAC ({0}) does not match router MAC ' - '({1}).'.format(ether.src, router_mac)) - if ether.dst != src_mac: - raise RuntimeError('Packet destination MAC ({0}) does not match RS ' - 'source MAC ({1}).'.format(ether.dst, src_mac)) - - if not ether.haslayer(ICMPv6ND_RA): - raise RuntimeError('Not an RA packet received {0}'. - format(ether.__repr__())) - - src_address = ipaddress.IPv6Address(unicode(ether['IPv6'].src)) - dst_address = ipaddress.IPv6Address(unicode(ether['IPv6'].dst)) - router_link_local = ipaddress.IPv6Address(unicode( - mac_to_ipv6_linklocal(router_mac))) - rs_src_address = ipaddress.IPv6Address(unicode(src_ip)) - - if src_address != router_link_local: - raise RuntimeError('Packet source address ({0}) does not match link ' - 'local address({1})'. - format(src_address, router_link_local)) - - if dst_address != rs_src_address: - raise RuntimeError('Packet destination address ({0}) does not match ' - 'RS source address ({1}).'. - format(dst_address, rs_src_address)) - - if ether['IPv6'].hlim != 255: - raise RuntimeError('Hop limit not correct: {0}!=255'. - format(ether['IPv6'].hlim)) - - ra_code = ether[ICMPv6ND_RA].code - if ra_code != 0: - raise RuntimeError('ICMP code: {0} not correct. '.format(ra_code)) - - sys.exit(0) - - -if __name__ == "__main__": - main()