#!/usr/bin/python3
# Copyright 2016 ETH Zurich
#
# 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.
"""
:mod:`pktprint` --- Packet printing utility
============================================
A very simple utility to parse a hex-encoded scion packet and pretty-print it.
"""

# Stdlib
import sys

# SCION
import lib.packet.scion

raw = "".join(sys.argv[1].split())
hexes = bytes.fromhex(raw)
p = lib.packet.scion.SCIONExtPacket(hexes)
print("=============> Packet:\n%s" % p)
print("=============> Validate: %s" % p.validate(len(hexes)))
print("=============> Payload:\n%s" % p.parse_payload())
