#!/bin/bash 
#(c) Roy Cohen 12/06/2017    :roy@wondercohen.nl
#original script             :My own work
#objective                   :Linux workstation configration manger
#last update                 :
#version


#Varibles
CLIENT_ARR=( `sudo tail -50 /var/log/secure | grep "Did not receive identification string from" |cut -d " " -f12| sort | uniq` )
CLIENT_PATH="$HOME/confman/hostlist/"
CLIENT=(`ls $CLIENT_PATH`) 

# Functions 
function add_client {
#Check if the client is known and add the cilent if it is not known in the system 
for client in "${CLIENT_ARR[@]}"; do
	if [ -f $CLIENT_PATH$client ] ; then
		echo "$CLIENT_PATH$client already exists"
	else 
		echo "" > $CLIENT_PATH$client
	fi
done
}

function add_ssh_ECDSA {
#Check if the client is known and add the ssh ECDSA key fingerprint to ~/.ssh/known_hosts
for client in "${CLIENT[@]}"; do
	grep "$client" $HOME/.ssh/known_hosts > /dev/null

        	if [ $? -eq 0 ] ; then
                	echo " $client already known at ~/.ssh/known_hosts"
         	else
                	ssh-keyscan $client >> ~/.ssh/known_hosts 
         	fi
done

}

#ssh root@$CLIENT "md5sum /etc/ssh/sshd_config"
#Check if first_start.sh as run on the client, if not than copy the first_start.sh to the client and run it
function first_start {
#FIST_START=`head -1 $CLIENT_PATH$CLIENT`

for cilent in "${CLIENT[@]}"; do
	head -1 $CLIENT_PATH$cilent | grep first_start > /dev/null

		if [ $? -eq 0 ] ; then
			echo "$cilent has allready run first_start"
		else
			scp ~/confman/scripts/first_start.sh root@$cilent:/root && echo "first_start" > $CLIENT_PATH$cilent
			ssh  root@$cilent '/root/first_start.sh' >> $CLIENT_PATH$cilent && ssh root@$cilent 'rm /root/first_start.sh'
		fi
done
}

#call funcions
add_client
add_ssh_ECDSA
first_start