nginx-basic/setup.sh
2019-01-06 01:23:00 -07:00

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#!/bin/bash
#######
### Update NGINX configuration '<tags>' 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
# clear variables
unset IP4
unset useCertbot
unset CertbotDomain
unset CertPath
unset KeyPath
unset CAChainPath
unset DHPath
unset phpVersion
unset phpType
# set variables
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])"
regexIP6="(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))"
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])"
serverNames_working=()
serverNames=()
detectedIP=$(ip route get 1 | sed -n 's/^.*src \([0-9.]*\) .*$/\1/p')
certbotFiles=(cert.pem chain.pem fullchain.pem privkey.pem)
generateDH=0
usePHP=1
hostname=$(hostname)
configPath="./etc.${hostname}"
# set tags and files to update
tag_servernames="<server name(s)>"
file_servernames="nginx/snippets/server_names.conf"
tag_sslcert="<path/to/your_ssl_certificate_fullchain>"
tag_sslkey="<path/to/your_certificate_private_key.key>"
file_ssl="nginx/snippets/ssl/ssl_certs.conf"
tag_dhparam="<path/to/your_dhparam.pem>"
tag_cachain="<path/to/your_CA_bundle.crt>"
file_mozmodern="nginx/conf.d/mozModern_ssl.conf"
tag_lanip="<lanIP>"
file_lanip="nginx/nginx.conf"
file_buffers="nginx/conf.d/buffers.conf"
file_buffersPHP="nginx/conf.d/buffers_conf_php.insert"
tag_phphandler="#<insert PHP handler.*>$"
file_phphandler="nginx/nginx.conf"
file_phpTCP="nginx/nginx_conf_phphandler_TCP.insert"
file_phpSOCK="nginx/nginx_conf_phphandler_SOCK.insert"
tag_phpAddr="<phpAddr>"
tag_phpPort="<phpPort>"
tag_phpVersion="<phpVersion>"
### 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
echo -e "\n${mag}In cases where this server will be acting as a (reverse) proxy, NGINX"
echo "needs to know it's own local IP address so that the logs can properly reflect"
echo -e "the IP of the remote system(s) instead of this server.${norm}\n"
while true; do
read -p "What is this machine's 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)${norm}"
fi
;;
esac
done
### get server names for this installation
echo -e "\n${mag}To which hostnames should NGINX answer? You can pick as many hostnames as you"
echo "like. Please ensure you provide fully-qualified domain names unless you"
echo "understand the impact not doing so."
echo -e "\nIf you are setting up SSL on this system, then make sure the hostnames match"
echo "what appears on your certificates!"
echo -e "\n${warn}You will be prompted to enter one hostname at a time."
echo "Provide a blank-entry (hit enter) when you're done."
echo -e "'X' will exit the script, as always${norm}\n"
while true; do
read -p "Hostname for this server? " inputServerName
case "${inputServerName}" in
'')
# check that at least one name as been provided
if [ -z "${serverNames_working}" ]; then
echo -e "\n${err}You must provide at least one hostname${norm}"
else
break
fi
;;
[Xx]*)
echo -e "\n${cyan}---exiting---\n${norm}"
exit 1
;;
*)
# check hostname for validity
if [[ ! "${inputServerName}" =~ ^${regexHostname}$ ]]; then
echo -e "\n${err}Invalid hostname${norm}"
else
serverNames_working+=("${inputServerName}")
fi
;;
esac
done
# create new array with unqiue values only
declare -A uniqueSN
for name in "${serverNames_working[@]}"; do
uniqueSN["${name}"]=""
done
for sn in "${!uniqueSN[@]}"; do
serverNames+=("${sn}")
done
### SSL related options
# using certbot?
echo -e "\n${mag}If you are using Certbot, you only need to provide the primary domain name"
echo "of your certificate and the script will auto-generate the paths NGINX needs to"
echo "make everything work."
echo -e "\nIf you haven't run Certbot yet, you can enter the domain you intend to use"
echo "as your primary domain and the paths generated by this script will work after"
echo -e "you run Certbot. In that case, you will have to answer ${warn}'yes'${mag} when asked"
echo -e "${warn}'Do you want to use this domain setting anyways?'${norm}\n"
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
echo -e "\n${err}Invalid hostname${norm}"
else
# check if Certbot files exist in path implied from hostname
echo -e "\n${cyan}Verifying Certbot files..."
echo -e "(/etc/letsencrypt/live/${inputCertbotDomain}/...)${norm}"
certbotBadFile=()
for certbotFile in "${certbotFiles[@]}"; do
if [ -f "/etc/letsencrypt/live/${inputCertbotDomain}/$certbotFile" ]; then
echo -e "File: ${certbotFile} -- ${ok}OK${norm}"
else
echo -e "File: ${certbotFile} -- ${err}X${norm}"
certbotBadFile+=("${certbotFile}")
fi
done
if [ -z "${certbotBadFile}" ]; then
echo -e "${cyan}Certbot files seem intact${norm}\n"
CertbotDomain="${inputCertbotDomain}"
break
else
echo -e "\n${err}The following files are missing from ${inputCertbotDomain}:"
echo -e "${warn}${certbotBadFile[*]}${norm}"
echo -e "${err}These files should all be present in a functional Certbot install.${norm}\n"
while true; do
read -p "Do you want to use this domain setting anyways? " yn
case "${yn}" in
[Yy]*)
CertbotDomain="${inputCertbotDomain}"
break
;;
[Nn]*)
break
;;
*)
;;
esac
done
fi
if [ -n "${CertbotDomain}" ]; then
break
fi
fi
;;
esac
done
fi
# Generate paths from CertbotDomain
if [ "${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
echo -e "\n${mag}NGINX requires the full paths to your PEM formatted certificates, private keys"
echo "and your CA-chain in order to serve pages securely and properly over SSL."
echo "If you haven't generated/copied your certificates yet, you can enter the"
echo -e "paths where they will be located and confirm when prompted by the script.${norm}"
# 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 "${KeyPath}" ]; then
break
fi
fi
;;
esac
done
# not using Certbot: get location of CA Certificate Chain
while true; do
read -p "What is the path to your primary SSL CA Chain certificate? " inputCAChainPath
case "${inputCAChainPath}" in
'')
echo -e "\n${err}You cannot have an empty path to your SSL CA Chain certificate${norm}"
;;
[Xx]*)
echo -e "\n${cyan}---exiting---\n${norm}"
exit 1
;;
*)
# validate path
if [ -f "${inputCAChainPath}" ]; then
CAChainPath="${inputCAChainPath}"
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 $yn in
[Yy]*)
CAChainPath="${inputCAChainPath}"
break
;;
[Nn]*)
break
;;
*)
;;
esac
done
if [ -n "${CAChainPath}" ]; then
break
fi
fi
;;
esac
done
fi
# dhparam: get location of DH Parameters file
echo -e "\n${mag}Having your own unique Diffie-Hellman Parameters file makes your SSL"
echo "communication more secure by helping to generate unique safe large prime"
echo "numbers. You shouldn't use any pre-installed dhparam.pem files. You should"
echo "always generate your own. If you haven't done that already and would like this"
echo -e "script to do it for you, please type ${warn}generate${mag} at the prompt instead"
echo -e "of a path${norm}\n"
while true; do
read -p "What is the path to your DH Parameters file? (default: /etc/ssl/certs/dhparam.pem) " inputDHPath
case "${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${norm}"
exit 1
;;
[Gg][Ee][Nn][Ee][Rr][Aa][Tt][Ee]*)
generateDH=1
break
;;
*)
# validate path
if [ -f "${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 "${DHPath}" ]; then
break
fi
fi
;;
esac
done
### PHP-FPM related options
# get PHP-FPM usage status
echo -e "\n${mag}PHP-FPM allows your server to process and serve dynamic PHP content. If you"
echo "have PHP-FPM installed, NGINX needs to know how to access it. The following"
echo "questions will allow the script to auto-configure that for you."
echo -e "\nIf you have not yet installed PHP-FPM but intend to do so in the future, you"
echo -e "can answer ${warn}yes${mag} and provide details for your intended setup so the script can"
echo -e "generate a configuration that will work once your PHP-FPM is set up.${norm}\n"
while true; do
read -p "Are you using PHP-FPM? (default: Yes) " yn
case $yn in
[Yy]*|'')
usePHP=1
break
;;
[Nn]*)
usePHP=0
break
;;
[Xx]*)
echo -e "\n${cyan}---exiting---\n${norm}"
exit 1
;;
*)
echo -e "\n${err}Please answer (Y)es, (N)o, e(X)it or accept default${norm}"
;;
esac
done
# get PHP-FPM version
if [ "${usePHP}" -eq 1 ]; then
while true; do
read -p "What version of PHP-FPM are you using? (default: 7.2) " inputPHPVersion
case $inputPHPVersion in
[[:digit:]]*|+[[:digit:]]*.[[:digit:]]*)
phpVersion="$inputPHPVersion"
break
;;
'')
phpVersion=7.2
break
;;
[Xx]*)
echo -e "\n${cyan}---exiting---\n${norm}"
exit 1
;;
*)
echo -e "\n${err}That does not seem to be a valid version number${norm}"
;;
esac
done
fi
# get PHP-FPM TCP or Sockets configuration
if [ "${usePHP}" -eq 1 ]; then
echo -e "\n${mag}PHP-FPM can be set up to respond to requests via TCP or via UNIX sockets."
echo "If you have no idea what any of this means, then you're probably using the"
echo -e "default setup which is sockets${norm}\n"
while true; do
read -p "Is your PHP-FPM set up to listen via 'TCP' or 'sockets'? (default: sockets) " inputPHPType
case "${inputPHPType}" in
[Ss][Oo][Cc][Kk][Ee][Tt][Ss]*|'')
phpType='sockets'
break
;;
[Tt][Cc][Pp]*)
phpType='tcp'
break
;;
[Xx]*)
echo -e "\n${cyan}---exiting---\n${norm}"
exit 1
;;
*)
echo -e "\n${err}Please enter either 'tcp' or 'sockets' or 'X' to exit script${norm}"
;;
esac
done
fi
# PHP-TCP: get address and port information
if [ "${phpType}" = "tcp" ]; then
while true; do
read -p "What IP address is PHP-FPM listening on? (default: 127.0.0.1) " inputPHPAddr
case "${inputPHPAddr}" in
'')
phpAddr="127.0.0.1"
break
;;
[Xx]*)
echo -e "\n${cyan}---exiting---\n${norm}"
exit 1
;;
*)
# check basic format validity
if [[ "${inputPHPAddr}" =~ ^${regexIP6}$ ]] || [[ "${inputPHPAddr}" =~ ^${regexIP4}$ ]]; then
phpAddr="${inputPHPAddr}"
break
else
echo -e "\n${err}Invalid IP4/IP6 address format${norm}"
fi
;;
esac
done
while true; do
read -p "What port is PHP-FPM listening on? (default: 9000) " inputPHPPort
case "${inputPHPPort}" in
'')
phpPort=9000
break
;;
[Xx]*)
echo -e "\n${cyan}---exiting---\n${norm}"
exit 1
;;
*)
# check port range validity
if [ "${inputPHPPort}" -ge 0 ] && [ "${inputPHPPort}" -le 65535 ]; then
phpPort="${inputPHPPort}"
break
else
echo -e "\n${err}Port must be between 0-65535${norm}"
fi
;;
esac
done
fi
### Write configurations to template files
# let user know what's happening
echo -e "\n${mag}---------------------${norm}"
echo -e "${cyan}Updating template files now...${norm}"
# copy template files to working versions
echo "copying files to dedicated directory for customization"
echo -e "${warn}${configPath}${norm}\n"
rm -rf "${configPath}"
cp -R ./etc "${configPath}"
# process server_names snippet
echo -e "updating ${warn}${configPath}/${file_servernames}${norm}"
for name in "${serverNames[@]}"; do
sed -i "/${tag_servernames}/a \ \ ${name}" "${configPath}/${file_servernames}"
done
sed -i "/${tag_servernames}/d" "${configPath}/${file_servernames}"
# process SSL snippet
echo "updating ${warn}${configPath}/${file_ssl}${norm}"
sed -i -e "s%${tag_sslcert}%${CertPath}%" "${configPath}/${file_ssl}"
sed -i -e "s%${tag_sslkey}%${KeyPath}%" "${configPath}/${file_ssl}"
# process mozModern SSL configuration
echo "updating ${warn}${configPath}/${file_mozmodern}${norm}"
sed -i -e "s%${tag_dhparam}%${DHPath}%" "${configPath}/${file_mozmodern}"
sed -i -e "s%${tag_cachain}%${CAChainPath}%" "${configPath}/${file_mozmodern}"
# process LAN IP in nginx.conf
echo "updating ${warn}${configPath}/${file_lanip}${norm}"
sed -i "s/${tag_lanip}/${IP4}" "${configPath}/${file_lanip}"
# if using PHP: process buffers.conf
if [ "${usePHP}" -eq 1 ]; then
echo "updating ${warn}${configPath}/${file_buffers}${norm}"
cat "${configPath}/${file_buffersPHP}" >> "${configPath}/${file_buffers}"
fi
## if using PHP-TCP: add upstream handler in nginx.conf
if [ "${phpType}" = "tcp" ]; then
echo "updating ${warn}${configPath}/${file_phphandler}${norm}"
# copy .insert file into nginx.conf
sed -i -e "/${tag_phphandler}/{r ${configPath}/${file_phpTCP}" -e 'd}' "${configPath}/${file_phphandler}"
# update tags with address and port information
sed -i "s/${tag_phpAddr}/${phpAddr}" "${configPath}/${file_phpTCP}"
sed -i "s/${tag_phpPort}/${phpPort}" "${configPath}/${file_phpTCP}"
fi
# if using PHP-SOCK: add upstream handler in nginx.conf
if [ "${phpType}" = "sockets" ]; then
echo "updating ${warn}${configPath}/${file_phphandler}${norm}"
# copy .insert file into nginx.conf
sed -i -e "/${tag_phphandler}/{r ${configPath}/${file_phpSOCK}" -e 'd}' "${configPath}/${file_phphandler}"
# update tag with version number
sed -i "s/${tag_phpVersion}/${phpVersion}" "${configPath}/${file_phpSOCK}"
fi
# notify user file updates are completed
echo -e "\n${mag}---------------------${norm}"
echo -e "${cyan}...Template files updated${norm}"
# notify user and generate DHParms if necessary, otherwise end reporting section
if [ "${generateDH}" -eq 1 ]; then
echo -e "\n${mag}---------------------${norm}"
echo -e "${cyan}Generating DH-Parameters file... this may take a while${norm}"
# delete existing (likely default) dhparam.pem
rm -f /etc/ssl/certs/dhparam.pem
# generate 4096-bit DHParams and store in /etc/ssl/certs/dhparam.pem
openssl dhparam -out /etc/ssl/certs/dhparam.pem 4096
# verify non-zero length file generated
if [ -s "/etc/ssl/certs/dhparam.pem" ]; then
echo -e "${ok}-- dhparam.pem generated --${norm}"
else
echo -e "${err}-- error generating dhparam.pem --"
echo -e "you should manaully generate this file${norm}"
fi
fi
# debug section
echo -e "\n${mag}---------------------${norm}"
echo "Local IP4: $IP4"
echo "Server names: ${serverNames[*]}"
echo -e "${cyan}--------------------${norm}"
echo "Using Certbot: $useCertbot"
echo "CertbotDomain: $CertbotDomain"
echo -e "${cyan}--------------------${norm}"
echo "CertPath: $CertPath"
echo "KeyPath: $KeyPath"
echo "CA-Chain: $CAChainPath"
echo "DHPath: $DHPath"
echo "Generating DH Params? $generateDH"
echo -e "${cyan}--------------------${norm}"
echo "usePHP: $usePHP"
echo "PHP Version: $phpVersion"
echo "PHP listen type: $phpType"
echo "PHP address: $phpAddr"
echo "PHP port: $phpPort"
echo -e "${mag}---------------------${norm}\n"
exit 0