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packet-analysis/average.sh
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#!/bin/bash | |
# average.sh begins on the previous line | |
# | |
# This macro averages a value returned from tshark. | |
# | |
# Version 1.0 Jan 2 2017 | |
# Version 1.1 Mar 4 2017 | |
# Corrected the version environment variable from | |
# LOCALDROPSVERSION to AVERAGEVERSION | |
# Version 1.2 Apr 1 2017 | |
# Added copyright and GNU GPL statement and disclaimer | |
AVERAGEVERSION="1.2_2017-04-01" | |
# from https://github.com/noahdavids/packet-analysis.git | |
# Copyright (C) 2017 Noah Davids | |
# This program is free software: you can redistribute it and/or modify it | |
# under the terms of the GNU General Public License as published by the Free | |
# Software Foundation, version 3, https://www.gnu.org/licenses/gpl-3.0.html | |
# This program is distributed in the hope that it will be useful, | |
# but WITHOUT ANY WARRANTY; without even the implied warranty of | |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
# GNU General Public License for more details. | |
if [ $# -ne 3 ] | |
then echo "Usage:" | |
echo " average.sh FILE TSHARK-FILTER TSHARK-VARIABLE" | |
echo " FILE is the name of the trace file to be analyzed" | |
echo " TSHARK-FILTER is the filter clause including the \ | |
-Y or -R " | |
echo " TSHARK-VARIABLE is the variable to be averaged" | |
echo "Examples:" | |
echo " To get the average time between transmission of data packets" | |
echo " average.sh trace.pcap \"-Y ip.src == 172.16.1.11 && \ | |
tcp.srcport == 80 && tcp.len > 0\" tcp.frame_time_displayed" | |
echo " To get the average advertised window size" | |
echo " average.sh trace.pcap \"-Y ip.src == 192.168.1.1 && \ | |
tcp.srcport == 42345\" tcp.window_size" | |
echo " To get the average round trip time" | |
echo " average.sh trace.pcap \"-Y ip.src == 172.16.1.11 && \ | |
tcp.srcport == 42345\" tcp.analysis.ack_rtt" | |
exit | |
fi | |
FILE=$1 | |
FILTER=$2 | |
VARIABLE=$3 | |
if [ ! -e $FILE ] | |
then echo "Could not find input file $FILE" | |
exit | |
fi | |
# I'm leting tshark sanitity check the filter and variable strings | |
# Echo the command line so there is a record of what was done | |
echo | |
echo tshark -r $FILE \"$FILTER\" -T fields -e $VARIABLE \| awk \'{sum += \$1\; n++} END { print sum, \"/\", n, \"=\", sum / n}\'; | |
tshark -r $FILE "$FILTER" -T fields -e $VARIABLE | awk '{sum += $1; n++} END { print sum, "/", n, "=", sum / n;}'; | |
# average.sh ends here | |