#!/bin/sh -e
#
# Copyright (c) 2016, Torbjörn Lönnemark <tobbez@ryara.net>
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

# DEMO: tcpping 5 www.google.com 443


if [ $# != 2 -a $# != 3 ]
then
        echo "Wrong number of arguments"
        exit
fi

output="$2 :"
for i in $(seq $1)
do
        portflag=""
        if [ $# = 3 ]
        then
                portflag="-p $3"
        fi
        tr=$(traceroute -n -T -f 255 -m 255 -q 1 -w 3 $portflag $2 2>&1| tail -n1 | sed 's/  / /g')
        if ! echo "$tr" | grep 'ms$' > /dev/null
        then
                output="$output -"
        else
                ms=$(echo "$tr" | cut -d" " -f3)
                output="$output $ms"
        fi
done
#echo "$(date "+%Y-%m-%d %H:%M:%S") $2 $portflag --> $output" >> /root/tcpping.log
echo $output