diff options
author | Vratko Polak <vrpolak@cisco.com> | 2020-05-04 13:05:26 +0200 |
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committer | Vratko Polak <vrpolak@cisco.com> | 2020-05-06 14:03:21 +0000 |
commit | 79f5ba9bf7656972dd988508eff9465562dde42c (patch) | |
tree | a84714e81d65bfc4f0454fa8e327d4129f58ac79 /resources/traffic_scripts/send_icmp_wait_for_reply.py | |
parent | 16ef90a2415aa3b65341fdb6517cf58721bfff7a (diff) |
Separate files needing GPL license
+ Keep apache license for now, until this is completed:
https://wiki.fd.io/view/TSC/Relicensing_Procedure
+ Add utilities for switching license comment blocks.
- They do not preserve attributes, so executable flag is lost.
+ Move the affected files to GPL/.
+ Update paths so files are executed from the new location.
+ Change the way scripts are started to do not require executable flag.
+ Employ OptionString when constructing longer command lines.
+ Move also PacketVerifier.py and TrafficScriptArg.py
as they are linked with traffic scripts.
+ That means the two files are outside "resources" package tree now.
+ Added __init__.py files so relative imports work in new package tree.
+ Start traffic scripts as python modules to allow relative imports.
+ Once again needed because they are outside the default PYTHONPATH.
Change-Id: Ieb135629e890adbaf5b79497570f3be25b746f9f
Signed-off-by: Vratko Polak <vrpolak@cisco.com>
Diffstat (limited to 'resources/traffic_scripts/send_icmp_wait_for_reply.py')
-rwxr-xr-x | resources/traffic_scripts/send_icmp_wait_for_reply.py | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/resources/traffic_scripts/send_icmp_wait_for_reply.py b/resources/traffic_scripts/send_icmp_wait_for_reply.py deleted file mode 100755 index 2c79ae7136..0000000000 --- a/resources/traffic_scripts/send_icmp_wait_for_reply.py +++ /dev/null @@ -1,136 +0,0 @@ -#!/usr/bin/env python3 - -# 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. - -"""Traffic script that sends an IP ICMPv4 or ICMPv6.""" - -import sys -import ipaddress - -from scapy.layers.inet import ICMP, IP -from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest, ICMPv6EchoReply,\ - ICMPv6ND_NS -from scapy.layers.l2 import Ether -from scapy.packet import Raw - -from resources.libraries.python.PacketVerifier import RxQueue, TxQueue -from resources.libraries.python.TrafficScriptArg import TrafficScriptArg - - -def valid_ipv4(ip): - """Check if IP address has the correct IPv4 address format. - - :param ip: IP address. - :type ip: str - :return: True in case of correct IPv4 address format, - otherwise return False. - :rtype: bool - """ - try: - ipaddress.IPv4Address(ip) - return True - except (AttributeError, ipaddress.AddressValueError): - return False - - -def valid_ipv6(ip): - """Check if IP address has the correct IPv6 address format. - - :param ip: IP address. - :type ip: str - :return: True in case of correct IPv6 address format, - otherwise return False. - :rtype: bool - """ - try: - ipaddress.IPv6Address(ip) - return True - except (AttributeError, ipaddress.AddressValueError): - return False - - -def main(): - """Send ICMP echo request and wait for ICMP echo reply. It ignores all other - packets.""" - args = TrafficScriptArg( - [u"dst_mac", u"src_mac", u"dst_ip", u"src_ip", u"timeout"] - ) - - dst_mac = args.get_arg(u"dst_mac") - src_mac = args.get_arg(u"src_mac") - dst_ip = args.get_arg(u"dst_ip") - src_ip = args.get_arg(u"src_ip") - tx_if = args.get_arg(u"tx_if") - rx_if = args.get_arg(u"rx_if") - timeout = int(args.get_arg(u"timeout")) - wait_step = 1 - - rxq = RxQueue(rx_if) - txq = TxQueue(tx_if) - sent_packets = [] - - # Create empty ip ICMP packet - if valid_ipv4(src_ip) and valid_ipv4(dst_ip): - ip_layer = IP - icmp_req = ICMP - icmp_resp = ICMP - icmp_type = 0 # echo-reply - elif valid_ipv6(src_ip) and valid_ipv6(dst_ip): - ip_layer = IP - icmp_req = ICMPv6EchoRequest - icmp_resp = ICMPv6EchoReply - icmp_type = 0 # Echo Reply - else: - raise ValueError(u"IP not in correct format") - - icmp_request = ( - Ether(src=src_mac, dst=dst_mac) / - ip_layer(src=src_ip, dst=dst_ip) / - icmp_req() - ) - - # Send created packet on the interface - icmp_request /= Raw() - sent_packets.append(icmp_request) - txq.send(icmp_request) - - for _ in range(1000): - while True: - icmp_reply = rxq.recv(wait_step, ignore=sent_packets) - if icmp_reply is None: - timeout -= wait_step - if timeout < 0: - raise RuntimeError(u"ICMP echo Rx timeout") - - elif icmp_reply.haslayer(ICMPv6ND_NS): - # read another packet in the queue in case of ICMPv6ND_NS packet - continue - else: - # otherwise process the current packet - break - - if icmp_reply[ip_layer][icmp_resp].type == icmp_type: - if icmp_reply[ip_layer].src == dst_ip and \ - icmp_reply[ip_layer].dst == src_ip: - break - else: - raise RuntimeError(u"Max packet count limit reached") - - print(u"ICMP echo reply received.") - - sys.exit(0) - - -if __name__ == u"__main__": - main() |