X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=resources%2Ftraffic_scripts%2Fipv4_ping_ttl_check.py;fp=resources%2Ftraffic_scripts%2Fipv4_ping_ttl_check.py;h=0000000000000000000000000000000000000000;hp=99a7b0a5f05c5eff026d2cc0b94da9bbe499f537;hb=d68951ac245150eeefa6e0f4156e4c1b5c9e9325;hpb=ed0258a440cfad7023d643f717ab78ac568dc59b diff --git a/resources/traffic_scripts/ipv4_ping_ttl_check.py b/resources/traffic_scripts/ipv4_ping_ttl_check.py deleted file mode 100755 index 99a7b0a5f0..0000000000 --- a/resources/traffic_scripts/ipv4_ping_ttl_check.py +++ /dev/null @@ -1,145 +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. - -from scapy.all import Ether, IP, ICMP -from resources.libraries.python.PacketVerifier \ - import Interface, create_gratuitous_arp_request, auto_pad, checksum_equal -from resources.libraries.python.TrafficScriptArg import TrafficScriptArg - - -def check_ttl(ttl_begin, ttl_end, ttl_diff): - if ttl_begin != ttl_end + ttl_diff: - raise RuntimeError( - "TTL changed from {} to {} but decrease by {} expected" - .format(ttl_begin, ttl_end, ttl_diff)) - - -def ckeck_packets_equal(pkt_send, pkt_recv): - pkt_send_raw = auto_pad(pkt_send) - pkt_recv_raw = auto_pad(pkt_recv) - if pkt_send_raw != pkt_recv_raw: - print "Sent: {}".format(pkt_send_raw.encode('hex')) - print "Received: {}".format(pkt_recv_raw.encode('hex')) - print "Sent:" - pkt_send.show2() - print "Received:" - pkt_recv.show2() - raise RuntimeError("Sent packet doesn't match received packet") - - -def main(): - args = TrafficScriptArg(['src_mac', 'dst_mac', 'src_ip', 'dst_ip', - 'hops', 'first_hop_mac', 'is_dst_tg']) - - src_if_name = args.get_arg('tx_if') - dst_if_name = args.get_arg('rx_if') - is_dst_tg = True if args.get_arg('is_dst_tg') == 'True' else False - - src_mac = args.get_arg('src_mac') - first_hop_mac = args.get_arg('first_hop_mac') - dst_mac = args.get_arg('dst_mac') - src_ip = args.get_arg('src_ip') - dst_ip = args.get_arg('dst_ip') - hops = int(args.get_arg('hops')) - - if is_dst_tg and (src_if_name == dst_if_name): - raise RuntimeError( - "Source interface name equals destination interface name") - - src_if = Interface(src_if_name) - src_if.send_pkt(str(create_gratuitous_arp_request(src_mac, src_ip))) - if is_dst_tg: - dst_if = Interface(dst_if_name) - dst_if.send_pkt(str(create_gratuitous_arp_request(dst_mac, dst_ip))) - - pkt_req_send = (Ether(src=src_mac, dst=first_hop_mac) / - IP(src=src_ip, dst=dst_ip) / - ICMP()) - src_if.send_pkt(pkt_req_send) - - if is_dst_tg: - pkt_req_recv = dst_if.recv_pkt() - if pkt_req_recv is None: - raise RuntimeError('Timeout waiting for packet') - - check_ttl(pkt_req_send[IP].ttl, pkt_req_recv[IP].ttl, hops) - pkt_req_send_mod = pkt_req_send.copy() - pkt_req_send_mod[IP].ttl = pkt_req_recv[IP].ttl - del pkt_req_send_mod[IP].chksum # update checksum - ckeck_packets_equal(pkt_req_send_mod[IP], pkt_req_recv[IP]) - - pkt_resp_send = (Ether(src=dst_mac, dst=pkt_req_recv.src) / - IP(src=dst_ip, dst=src_ip) / - ICMP(type=0)) # echo-reply - dst_if.send_pkt(pkt_resp_send) - - pkt_resp_recv = src_if.recv_pkt() - if pkt_resp_recv is None: - raise RuntimeError('Timeout waiting for packet') - - if is_dst_tg: - check_ttl(pkt_resp_send[IP].ttl, pkt_resp_recv[IP].ttl, hops) - pkt_resp_send_mod = pkt_resp_send.copy() - pkt_resp_send_mod[IP].ttl = pkt_resp_recv[IP].ttl - del pkt_resp_send_mod[IP].chksum # update checksum - ckeck_packets_equal(pkt_resp_send_mod[IP], pkt_resp_recv[IP]) - - if not pkt_resp_recv.haslayer(IP): - raise RuntimeError('Received packet does not contain IPv4 header: {}'. - format(pkt_resp_recv.__repr__())) - - if pkt_resp_recv[IP].src != pkt_req_send[IP].dst: - raise RuntimeError( - 'Received IPv4 packet contains wrong src IP address, ' - '{} instead of {}'.format(pkt_resp_recv[IP].src, - pkt_req_send[IP].dst)) - - if pkt_resp_recv[IP].dst != pkt_req_send[IP].src: - raise RuntimeError( - 'Received IPv4 packet contains wrong dst IP address, ' - '{} instead of {}'.format(pkt_resp_recv[IP].dst, - pkt_req_send[IP].src)) - - # verify IPv4 checksum - copy = pkt_resp_recv.copy() - chksum = copy[IP].chksum - del copy[IP].chksum - tmp = IP(str(copy[IP])) - if not checksum_equal(tmp.chksum, chksum): - raise RuntimeError('Received IPv4 packet contains invalid checksum, ' - '{} instead of {}'.format(chksum, tmp.chksum)) - - if not pkt_resp_recv[IP].haslayer(ICMP): - raise RuntimeError( - 'Received IPv4 packet does not contain ICMP header: {}'. - format(pkt_resp_recv[IP].__repr__())) - - # verify ICMP checksum - copy = pkt_resp_recv.copy() - chksum = copy[IP][ICMP].chksum - del copy[IP][ICMP].chksum - tmp = ICMP(str(copy[IP][ICMP])) - if not checksum_equal(tmp.chksum, chksum): - raise RuntimeError('Received ICMP packet contains invalid checksum, ' - '{} instead of {}'.format(chksum, tmp.chksum)) - - pkt_req_send_mod = pkt_req_send.copy() - pkt_req_send_mod[IP][ICMP].type = pkt_resp_recv[IP][ICMP].type - del pkt_req_send_mod[IP][ICMP].chksum # update checksum - ckeck_packets_equal(pkt_req_send_mod[IP][ICMP], pkt_resp_recv[IP][ICMP]) - - -if __name__ == "__main__": - main()