Python3: resources and libraries

[csit.git] / resources / traffic_scripts / check_ra_packet.py

diff --git a/resources/traffic_scripts/check_ra_packet.py b/resources/traffic_scripts/check_ra_packet.py
deleted file mode 100755 (executable)
index 9717c7d..0000000
--- a/resources/traffic_scripts/check_ra_packet.py
+++ /dev/null
@@ -1,103 +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 advertisement check script."""
-
-import sys
-import ipaddress
-
-from scapy.layers.inet6 import IPv6, ICMPv6ND_RA, ICMPv6ND_NS
-
-from resources.libraries.python.PacketVerifier import RxQueue
-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():
-    """Check packets on specific port and look for the Router Advertisement
-     part.
-    """
-
-    args = TrafficScriptArg(['src_mac', 'interval'])
-
-    rx_if = args.get_arg('rx_if')
-    src_mac = args.get_arg('src_mac')
-    interval = int(args.get_arg('interval'))
-    rxq = RxQueue(rx_if)
-
-    # receive ICMPv6ND_RA packet
-    while True:
-        ether = rxq.recv(max(5, interval))
-        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 if received packet contains layer RA and check other values
-    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))
-    link_local = ipaddress.IPv6Address(unicode(mac_to_ipv6_linklocal(src_mac)))
-    all_nodes_multicast = ipaddress.IPv6Address(u'ff02::1')
-
-    if src_address != link_local:
-        raise RuntimeError('Source address ({0}) not matching link local '
-                           'address ({1})'.format(src_address, link_local))
-    if dst_address != all_nodes_multicast:
-        raise RuntimeError('Packet destination address ({0}) is not the all'
-                           ' nodes multicast address ({1}).'.
-                           format(dst_address, all_nodes_multicast))
-    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()