registry.sh

#!/bin/bash

# Copyright (C) 2018  Tetras Libre <Contact@Tetras-Libre.fr>
# Author: Beniamine, David <David.Beniamine@Tetras-Libre.fr>
#
# 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, either version 3 of the License, or
# (at your option) any later version.
#
# 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.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

getip(){
    awk '/^lease/{IP=$2} /hardware ethernet/{gsub(";","",$3);if($3 == "'$1'"){print IP}}' \
        < /var/lib/dhcp/dhcpd.leases
    }

IP=$(ip a | awk '/inet.*eth/ {print $2}' | cut -d / -f 1)
port=9998
conf_dir="/etc/registry"
conf_file="$conf_dir/hosts"
DIR=$(dirname $0)

if [ ! -d $conf_dir ]
then
    # Init
    mkdir $conf_dir
    ssh-keygen -P "" -f /root/.ssh/id_rsa
    touch $conf_file
else
    # Clean
    $DIR/clean.sh
fi

while true
do
    # Format mac name ip number_apt_upgrade debian_version primtux_version git_branch number_git_updates
    line=`netcat -l $IP $port`
    if [ $(echo "$line" | egrep -c "^([0-9a-f]{2}:?){6} .*$") -eq 1 ]
    then
        date=$(date +%Y%m%d)
        rIP=$(echo $line | cut -d ' ' -f 3)
        sline=$(echo $line | cut -d ' ' -f 1-2)
        mac=$(echo $line | cut -d ' ' -f 1)
        eline=$(echo $line | cut -d ' ' -f 4-)
        res=$(grep "$mac" $conf_file)
        if [ ! -z "$res" ]
        then
            # Update
            sed -i "/$mac/d" $conf_file
        fi
        echo "$date $line" >> $conf_file
    fi
done