#!/bin/bash ####### ### Update NGINX configuration '' with proper values and optionally copy ### to updated directory structure ####### ### text formatting ansi codes err="\e[1;31m" ok="\e[1;32m" warn="\e[93m" mag="\e[95m" cyan="\e[96m" norm="\e[0m" ### set variables unset IP4 unset useCertbot unset CertbotDomain unset CertPath unset KeyPath unset CAChainPath unset DHPath detectedIP=$(ip route get 1 | sed -n 's/^.*src \([0-9.]*\) .*$/\1/p') regexIP4="(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])" regexHostname="(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])" ### quick intro for the user echo -e "\n${mag}This script will customize the provided NGINX template files for your" echo "environment. You will be prompted for all necessary information. After that," echo "default error pages will be copied to your webroot and your NGINX configuration" echo -e "directory structure will be customized.${norm}\n" echo -e "${warn}You may accept the default option (listed in brackets) by simply" echo "pressing ENTER (i.e. no answer)." echo -e "You may exit this script at any prompt by typing 'X'${norm}\n" ### get local IP address while true; do read -p "What is this NGINX machine's primary local IP4 address? (${detectedIP}) " inputIP case "${inputIP}" in '') IP4="${detectedIP}" break ;; [Xx]*) echo -e "\n${cyan}---exiting---\n${norm}" exit 1 ;; *) # check IP for validity if [[ "${inputIP}" =~ ^${regexIP4}$ ]]; then IP4="${inputIP}" break else echo -e "\n${err}Invalid IP4 format (xxx.xxx.xxx.xxx)${norm}" fi ;; esac done ### SSL related options # using certbot? while true; do read -p "Are you using Certbot to handle your SSL certificates? (default: NO) " yn case "${yn}" in [Yy]*) useCertbot=1 break ;; [Nn]|'') useCertbot=0 unset CertbotDomain break ;; [Xx]*) echo -e "\n${cyan}---exiting---\n${norm}" exit 1 ;; *) echo -e "\n${err}Please answer (Y)es, (N)o, e(X)it or accept default${norm}" ;; esac done # using Certbot: get primary domain name since that how Certbot determines paths if [ "${useCertbot}" -eq 1 ]; then while true; do read -p "What is the primary domain for your Certbot Certificates? " inputCertbotDomain case "${inputCertbotDomain}" in '') echo -e "\n${err}You cannot have an empty domain name${norm}" ;; [Xx]*) echo -e "\n${cyan}---exiting---\n${norm}" exit 1 ;; *) # check hostname for validity if [[ "${inputCertbotDomain}" =~ ^${regexHostname}$ ]]; then CertbotDomain="${inputCertbotDomain}" break else echo -e "\n${err}Invalid hostname${norm}" fi ;; esac done fi # Generate paths from CertbotDomain if [ "${useCertbot}" -eq 1 ]; then CertPath="/etc/letsencrypt/live/${CertbotDomain}/fullchain.pem" KeyPath="/etc/letsencrypt/live/${CertbotDomain}/privkey.pem" CAChainPath="/etc/letsencrypt/live/${CertbotDomain}/chain.pem" fi # only process manual certificate paths if NOT using Certbot if [ "${useCertbot}" -eq 0 ]; then # not using Certbot: get location of certificate while true; do read -p "What is the path to your primary SSL certificate? " inputCertPath case "${inputCertPath}" in '') echo -e "\n${err}You cannot have an empty path to your SSL certificate${norm}" ;; [Xx]*) echo -e "\n${cyan}---exiting---\n${norm}" exit 1 ;; *) # validate path if [ -f "${inputCertPath}" ]; then CertPath="${inputCertPath}" break else echo -e "\n${warn}The file you specified doesn't exist${norm}" while true; do read -p "Do you want to use this path anyways? " yn case $yn in [Yy]*) CertPath="${inputCertPath}" break ;; [Nn]*) break ;; *) ;; esac done if [ -n "${CertPath}" ]; then break fi fi ;; esac done # not using Certbot: get location of private key while true; do read -p "What is the path to your primary SSL private key? " inputKeyPath case "${inputKeyPath}" in '') echo -e "\n${err}You cannot have an empty path to your SSL private key${norm}" ;; [Xx]*) echo -e "\n${cyan}---exiting---\n${norm}" exit 1 ;; *) # validate path if [ -f "${inputKeyPath}" ]; then KeyPath="${inputKeyPath}" break else echo -e "\n${warn}The file you specified doesn't exist${norm}" while true; do read -p "Do you want to use this path anyways? " yn case $yn in [Yy]*) KeyPath="${inputKeyPath}" break ;; [Nn]*) break ;; *) ;; esac done if [ -n "${KeyPath}" ]; then break fi fi ;; esac done # dhparam: get location of DH Parameters file while true; do read -p "What is the path to your DH Parameters file? (default: /etc/ssl/certs/dhparam.pem) " inputDHPath case "${inputDHPath}" in '') # verify default path exists inputDHPath="/etc/ssl/certs/dhparam.pem" if [ -f "${inputDHPath}" ]; then DHPath="${inputDHPath}" break else echo -e "\n${warn}The file you specified doesn't exist${norm}" while true; do read -p "Do you want to use this path anyways? " yn case $yn in [Yy]*) DHPath="${inputDHPath}" break ;; [Nn]*) break ;; *) ;; esac done if [ -n "${DHPath}" ]; then break fi fi ;; [Xx]*) echo -e "\n${cyan}---exiting---\n${norm}" exit 1 ;; *) # validate path if [ -f "${inputDHPath}" ]; then DHPath="${inputDHPath}" break else echo -e "\n${warn}The file you specified doesn't exist${norm}" while true; do read -p "Do you want to use this path anyways? " yn case $yn in [Yy]*) DHPath="${inputDHPath}" break ;; [Nn]*) break ;; *) ;; esac done if [ -n "${DHPath}" ]; then break fi fi ;; esac done fi # debug section echo "Local IP4: $IP4" echo "Using Certbot: $useCertbot" echo "CertbotDomain: $CertbotDomain" echo "CertPath: $CertPath" echo "KeyPath: $KeyPath" echo "DHPath: $DHPath" exit 0