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>

1 files changed, 0 insertions, 164 deletions

diff --git a/resources/traffic_scripts/send_ip_check_headers.py b/resources/traffic_scripts/send_ip_check_headers.py
deleted file mode 100755
index f5a55553cf..0000000000
--- a/resources/traffic_scripts/send_ip_check_headers.py
+++ /dev/null
@@ -1,164 +0,0 @@
-#!/usr/bin/env python3
-
-# Copyright (c) 2019 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 IPv4/IPv6 packet from one interface
-to the other. Source and destination IP addresses and source and destination
-MAC addresses are checked in received packet.
-"""
-
-import sys
-
-import ipaddress
-
-from robot.api import logger
-from scapy.layers.inet import IP
-from scapy.layers.inet6 import IPv6, ICMPv6ND_NS
-from scapy.layers.l2 import Ether, Dot1Q
-from scapy.packet import Raw
-
-from resources.libraries.python.PacketVerifier import RxQueue, TxQueue
-from resources.libraries.python.TrafficScriptArg import TrafficScriptArg
-
-
-def valid_ipv4(ip):
-    try:
-        ipaddress.IPv4Address(ip)
-        return True
-    except (AttributeError, ipaddress.AddressValueError):
-        return False
-
-
-def valid_ipv6(ip):
-    try:
-        ipaddress.IPv6Address(ip)
-        return True
-    except (AttributeError, ipaddress.AddressValueError):
-        return False
-
-
-def main():
-    """Send IP/IPv6 packet from one traffic generator interface to the other."""
-    args = TrafficScriptArg(
-        [
-            u"tg_src_mac", u"tg_dst_mac", u"src_ip", u"dst_ip", u"dut_if1_mac",
-            u"dut_if2_mac"
-        ],
-        [
-            u"encaps_tx", u"vlan_tx", u"vlan_outer_tx", u"encaps_rx",
-            u"vlan_rx", u"vlan_outer_rx"
-        ]
-    )
-
-    tx_src_mac = args.get_arg(u"tg_src_mac")
-    tx_dst_mac = args.get_arg(u"dut_if1_mac")
-    rx_dst_mac = args.get_arg(u"tg_dst_mac")
-    rx_src_mac = args.get_arg(u"dut_if2_mac")
-    src_ip = args.get_arg(u"src_ip")
-    dst_ip = args.get_arg(u"dst_ip")
-    tx_if = args.get_arg(u"tx_if")
-    rx_if = args.get_arg(u"rx_if")
-
-    encaps_tx = args.get_arg(u"encaps_tx")
-    vlan_tx = args.get_arg(u"vlan_tx")
-    vlan_outer_tx = args.get_arg(u"vlan_outer_tx")
-    encaps_rx = args.get_arg(u"encaps_rx")
-    vlan_rx = args.get_arg(u"vlan_rx")
-    vlan_outer_rx = args.get_arg(u"vlan_outer_rx")
-
-    rxq = RxQueue(rx_if)
-    txq = TxQueue(tx_if)
-
-    sent_packets =list()
-    pkt_raw = Ether(src=tx_src_mac, dst=tx_dst_mac)
-
-    if encaps_tx == u"Dot1q":
-        pkt_raw /= Dot1Q(vlan=int(vlan_tx))
-    elif encaps_tx == u"Dot1ad":
-        pkt_raw.type = 0x88a8
-        pkt_raw /= Dot1Q(vlan=vlan_outer_tx)
-        pkt_raw /= Dot1Q(vlan=vlan_tx)
-
-    if valid_ipv4(src_ip) and valid_ipv4(dst_ip):
-        pkt_raw /= IP(src=src_ip, dst=dst_ip, proto=61)
-        ip_format = IP
-    elif valid_ipv6(src_ip) and valid_ipv6(dst_ip):
-        pkt_raw /= IPv6(src=src_ip, dst=dst_ip)
-        ip_format = IPv6
-    else:
-        raise ValueError(u"IP not in correct format")
-
-    pkt_raw /= Raw()
-    sent_packets.append(pkt_raw)
-    txq.send(pkt_raw)
-
-    while True:
-        if tx_if == rx_if:
-            ether = rxq.recv(2, ignore=sent_packets)
-        else:
-            ether = rxq.recv(2)
-
-        if ether is None:
-            raise RuntimeError(u"IP packet 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
-
-    if rx_dst_mac == ether[Ether].dst and rx_src_mac == ether[Ether].src:
-        logger.trace(u"MAC matched")
-    else:
-        raise RuntimeError(f"Matching packet unsuccessful: {ether!r}")
-
-    if encaps_rx == u"Dot1q":
-        if ether[Dot1Q].vlan == int(vlan_rx):
-            logger.trace(u"VLAN matched")
-        else:
-            raise RuntimeError(
-                f"Ethernet frame with wrong VLAN tag "
-                f"({ether[Dot1Q].vlan}-received, "
-                f"{vlan_rx}-expected):\n{ether!r}"
-            )
-        ip = ether[Dot1Q].payload
-    elif encaps_rx == u"Dot1ad":
-        raise NotImplementedError()
-    else:
-        ip = ether.payload
-
-    if not isinstance(ip, ip_format):
-        raise RuntimeError(f"Not an IP packet received {ip!r}")
-
-    # Compare data from packets
-    if src_ip == ip.src:
-        logger.trace(u"Src IP matched")
-    else:
-        raise RuntimeError(
-            f"Matching Src IP unsuccessful: {src_ip} != {ip.src}"
-        )
-
-    if dst_ip == ip.dst:
-        logger.trace(u"Dst IP matched")
-    else:
-        raise RuntimeError(
-            f"Matching Dst IP unsuccessful: {dst_ip} != {ip.dst}"
-        )
-
-    sys.exit(0)
-
-
-if __name__ == u"__main__":
-    main()