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, 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()