Whois CLI

#!/bin/bash
#
#

#######################
# GLOBAL VARIABLES
########################
VERSION="1.3"

####################
# COLOUR VARIABLES
####################
# Terminal Formatting
RESET="\033[0m"
BOLD="\033[1m"

# UI Colours
CLR_RED="\033[38;5;196m"     # Bright Red
CLR_GREEN="\033[38;5;46m"    # Bright Lime Green
CLR_GOLD="\033[38;5;226m"    # Gold
CLR_PURPLE="\033[38;5;141m"  # Light Purple / Lavender
CLR_BLUE="\033[38;5;4m"      # Bright Sky Blue
CLR_ORANGE="\033[38;5;208m"  # Orange
CLR_AQUA="\033[38;5;51m"     # Aqua
CLR_PINK="\033[38;5;199m"    # PINK
CLR_PBLUEE="\033[38;5;147m"  # Pale Blue
CLR_DGREEN="\033[38;5;2m"    # Dark Forest Green
CLR_PAQUA="\033[38;5;195m"   # Pale Aqua
CLR_GREY="\033[38;5;245m"    # Darker Grey
CLR_TEXT="\033[38;5;250m"    # Light Grey

####################
# VERSION
####################
if [[ "$1" == "-v" ]]; then
    echo -e " ${CLR_PURPLE}Simple Domain Lookup v${VERSION}${RESET}"
    exit 0
fi

####################
# GET URL
####################
if [[ -n "$1" ]]; then
    URL="$1"
else
    echo -e "${CLR_AQUA}Enter WHOIS Lookup URL:${RESET}"
    read URL
fi

####################
# DOWNLOAD WHOIS
####################
wget -q -nv -O output.html "https://who.is/whois/$URL"

####################
# CHECK FOR RESULTS
####################
if ! grep -q "Contact Information" output.html; then
    echo
    echo -e "${CLR_RED}Error: ${RESET}No Records Found"
    echo
    rm output.html
    exit 1
fi

echo "─────────────────────────────────────"
echo -e "${BOLD}${CLR_GOLD} WHOIS reply for:${RESET}${CLR_GOLD} $URL${RESET}"
echo "─────────────────────────────────────"

####################
# EXTRACT WHOIS DATA
####################

get_field() {
    grep -oP "$1: \K[^\\\\\"]+" output.html | head -1
}

echo -e "${CLR_AQUA}Registrant Contact${RESET}"
echo -e " ${CLR_TEXT}Name${RESET}        : ${BOLD}$(get_field "Registrant Name")${RESET}"
echo -e " ${CLR_TEXT}Address${RESET}     : ${BOLD}$(get_field "Registrant Street"), $(get_field "Registrant City"), $(get_field "Registrant State/Province") $(get_field "Registrant Postal Code"), $(get_field "Registrant Country")${RESET}"
echo -e " ${CLR_TEXT}Phone${RESET}       : ${BOLD}$(get_field "Registrant Phone")${RESET}"
echo -e " ${CLR_TEXT}Email${RESET}       : ${BOLD}$(get_field "Registrant Email")${RESET}"

echo
echo -e "${CLR_AQUA}Registrar Information${RESET}"
echo -e " ${CLR_TEXT}Registrar${RESET}   : ${BOLD}$(get_field "Registrar")${RESET}"
echo -e " ${CLR_TEXT}WHOIS Server${RESET}: ${BOLD}$(get_field "Registrar WHOIS Server")${RESET}"
echo -e " ${CLR_TEXT}Abuse Email${RESET} : ${BOLD}$(get_field "Registrar Abuse Contact Email")${RESET}"
echo -e " ${CLR_TEXT}Abuse Phone${RESET} : ${BOLD}$(get_field "Registrar Abuse Contact Phone")${RESET}"

echo
echo -e "${CLR_AQUA}Important Dates${RESET}"
echo -e " ${CLR_TEXT}Created${RESET}     : ${BOLD}$(get_field "Creation Date")${RESET}"
echo -e " ${CLR_TEXT}Updated${RESET}     : ${BOLD}$(get_field "Updated Date")${RESET}"
echo -e " ${CLR_TEXT}Expires${RESET}     : ${BOLD}$(get_field "Registrar Registration Expiration Date")${RESET}"

echo
echo -e "${CLR_AQUA}Nameservers${RESET}"
grep -oP 'Name Server: \K[^\\\\"]+' output.html |
sort -u |
while read -r nameserver; do
    echo -e " ${CLR_TEXT}              ${RESET}${BOLD}$nameserver${RESET}"
done

echo
echo "────────────────────────────────"

####################
# CLEANUP
####################
rm output.html