#!/bin/bash

IP=$(dig +short myip.opendns.com @resolver1.opendns.com)
echo "" > auth.log

if [ -d /etc/squid3 ]; then
    SQUID="squid3"
else
    SQUID="squid"
fi


create_user(){
    htpasswd  /etc/$SQUID/passwd $NEW_USER
    squid3 -k reconfigure
    printf "\ndone...\n"
}

add_ip(){
    echo "$IP" >> /etc/$SQUID/squid_users
    squid3 -k reconfigure
    printf "\ndone...\n"
}

dell_ip(){
    sed -i -e "/^$IP/d" /etc/$SQUID/squid_users
    squid3 -k reconfigure
    printf "\ndone...\n"
}

dell_user(){
    sed -i -e "/^$NEW_USER/d" /etc/$SQUID/passwd
    squid3 -k reconfigure
    printf "\ndone...\n"
}

add_proxy_port(){
    sed -i '1 ihttp_port '$PORT'' /etc/$SQUID/squid.conf
    squid3 -k reconfigure
    printf "\ndone...\n"
}

dell_proxy_port(){
    sed -i -e "/^http_port '$PORT'/d" /etc/$SQUID/squid.conf
    squid3 -k reconfigure
    printf "\ndone...\n"
}


create_list_proxy(){
    printf "\ncount of proxy:\n"
    read count
    while [ $count != 0 ]
    do
    user=$(cat /dev/urandom | tr -dc 'a-z' | fold -w 5 | head -n 1)
    pass=$(cat /dev/urandom | tr -dc 'a-z' | fold -w 8 | head -n 1)
    htpasswd -b /etc/$SQUID/passwd $user $pass
    echo "$IP:3128:$user:$pass" >> auth.log
    count=$(($count-1))
    echo $count
    done
    squid3 -k reconfigure 2>/dev/null
    cat auth.log
    printf "\ndone...\n"
}

while [ true ]

do

printf "[0]get list of proxy\n[1]add user\n[2]dell user\n[3]add port\n[4]dell port\n[5]list users\n[6]list ports\n[7]exit\n";
read ANSWER;


case "$ANSWER" in

    0  )
    create_list_proxy
    ;;

    1  )
    printf "enter new user name: "
    read NEW_USER
    create_user
    ;;


    2  )
    printf "enter name to dell: "
    read NEW_USER
    dell_user
    ;;

    3  )
    printf "port in use: \n$(grep http_port /etc/$SQUID/squid.conf)\n"
    printf "enter new port: "
    read PORT
    add_proxy_port
    ;;

    4  )
    printf "port in use: \n$(grep http_port /etc/$SQUID/squid.conf)\n"
    printf "enter port to dell: "
    read PORT
    dell_proxy_port
    ;;

    5  )
    cat /etc/$SQUID/passwd
    ;;

    6  )
    printf "port in use: \n$(grep http_port /etc/$SQUID/squid.conf)\n"
    ;;

    7  )
    exit
    ;;

    *  )
    printf "wrong input..."
    exit
    ;;
esac
done