add script to repo

create_nginx_service.sh

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+#!/usr/bin/env bash
+
+# check if script is run as root
+if [ "$EUID" -ne 0 ]; then
+  echo "Please run as root: sudo -i"
+  exit 1
+fi
+
+if [[ "$1" == "clear" && ! -z $2 ]]; then
+  echo "Deleting $2 files..."
+  rm -rfv /etc/nginx/sites-available/$2.conf /etc/nginx/sites-enabled/$2.conf /etc/letsencrypt/live/$2* /etc/letsencrypt/archive/$2* /etc/letsencrypt/renewal/$2*
+  exit 2
+fi
+
+# read command line arguments and warn if missing
+if [[ -z $1 || -z $2 ]]; then
+  echo "WARNING! Please pass URL and SERVICE_ADDRESS as arguments, for example:
+./create_nginx_service.sh btcpayserver.mydomain.com http://localhost:8081"
+  exit 1
+fi
+URL=$1
+SERVICE_ADDRESS=$2
+
+# check if certbot is installed
+if ! which certbot > /dev/null 2>&1 ; then
+  echo "installing certbot..."
+  apt install certbot -y
+fi
+
+# check if nginx is installed
+if ! which nginx > /dev/null 2>&1 ; then
+  echo "installing nginx..."
+  apt install nginx -y
+fi
+
+# generate 4096 bit DH params to strengthen the security, may take a while
+if [ ! -f '/etc/ssl/certs/dhparam.pem' ]; then
+  echo "generate 4096 bit DH params..."
+  openssl dhparam -out /etc/ssl/certs/dhparam.pem 4096
+fi
+
+# create directory for Let's Encrypt files
+if [ ! -d '/var/lib/letsencrypt/.well-known' ]; then
+  echo "create directory for Let's Encrypt files..."
+  mkdir -p /var/lib/letsencrypt/.well-known
+  chgrp www-data /var/lib/letsencrypt
+  chmod g+s /var/lib/letsencrypt
+fi
+
+# Create a variable mapping to forward the correct protocol setting and check 
+# if the Upgrade header is sent by the client
+if ! grep -q "map \$http_x_forwarded_proto \$proxy_x_forwarded_proto" /etc/nginx/conf.d/map.conf; then
+echo "Create a variable mapping to forward the correct protocol setting..."
+cat << EOF >> /etc/nginx/conf.d/map.conf
+map $http_x_forwarded_proto $proxy_x_forwarded_proto {
+  default $http_x_forwarded_proto;
+  ''      $scheme;
+}
+EOF
+fi
+
+if ! grep -q "map \$http_upgrade \$connection_upgrade" /etc/nginx/conf.d/map.conf; then
+echo "check if the Upgrade header is sent by the client..."
+cat << EOF >> /etc/nginx/conf.d/map.conf
+map $http_upgrade $connection_upgrade {
+  default upgrade;
+  ''      close;
+}
+EOF
+fi
+
+# Exit if a config file for the domain already exists
+check_if_file_exists() {
+  if [ -f $1 ]; then
+    echo "WARNING! The following files exist and will not be modified"
+    for i in /etc/nginx/sites-available/$URL.conf /etc/nginx/sites-enabled/$URL.conf /etc/letsencrypt/live/$URL/fullchain.pem /etc/letsencrypt/live/$URL/privkey.pem; do
+      if [ -f $i ]; then
+        echo $i
+      fi
+    done
+    exit 1
+  fi
+}
+
+# Create a config file for the domain
+check_if_file_exists /etc/nginx/sites-available/$URL.conf
+echo "creating a nginx conf: /etc/nginx/sites-available/$URL.conf..."
+cat << EOF > /etc/nginx/sites-available/$URL.conf
+server {
+  listen 80;
+  server_name $URL;
+
+  # Let's Encrypt verification requests
+  location ^~ /.well-known/acme-challenge/ {
+    allow all;
+    root /var/lib/letsencrypt/;
+    default_type "text/plain";
+    try_files \$uri =404;
+  }
+
+  # Redirect everything else to https
+  location / {
+    return 301 https://\$server_name\$request_uri;
+  }
+}
+EOF
+
+# Enable the web server config by creating a symlink and restarting nginx
+echo "Enable the web server config by creating a symlink: /etc/nginx/sites-enabled/$URL.conf..."
+ln -s /etc/nginx/sites-available/$URL.conf /etc/nginx/sites-enabled/$URL.conf
+echo "restarting nginx..."
+systemctl restart nginx
+
+# Obtain SSL certificate via Let's Encrypt
+check_if_file_exists /etc/letsencrypt/live/$URL/fullchain.pem
+check_if_file_exists /etc/letsencrypt/live/$URL/privkey.pem
+echo "Obtain SSL certificate via Let's Encrypt..."
+if ! certbot certonly --agree-tos --email admin@$URL --webroot -w /var/lib/letsencrypt/ -d $URL; then
+  echo "Failed to obtain certificate, removing /etc/nginx/sites-available/$URL.conf and /etc/nginx/sites-enabled/$URL.conf and restarting nginx..."
+  rm /etc/nginx/sites-available/$URL.conf /etc/nginx/sites-enabled/$URL.conf
+  systemctl restart nginx
+  exit 1
+fi
+
+# Now that we have a valid SSL certificate, add the https server part at the
+# end of /etc/nginx/sites-available/$URL.conf
+echo "add the https server part at the end of /etc/nginx/sites-available/$URL.conf..."
+cat << EOF >> /etc/nginx/sites-available/$URL.conf
+server {
+  listen 443 ssl http2;
+  server_name $URL;
+
+  # SSL settings
+  ssl_stapling on;
+  ssl_stapling_verify on;
+
+  ssl_session_timeout 1d;
+  ssl_session_cache shared:SSL:10m;
+  ssl_session_tickets off;
+
+  # Update this with the path of your certificate files
+  ssl_certificate /etc/letsencrypt/live/$URL/fullchain.pem;
+  ssl_certificate_key /etc/letsencrypt/live/$URL/privkey.pem;
+
+  ssl_dhparam /etc/ssl/certs/dhparam.pem;
+  ssl_protocols TLSv1.2 TLSv1.3;
+  ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
+  ssl_prefer_server_ciphers off;
+
+  resolver 8.8.8.8 8.8.4.4 valid=300s;
+  resolver_timeout 30s;
+
+  add_header Strict-Transport-Security "max-age=63072000" always;
+  add_header Content-Security-Policy "frame-ancestors 'self';";
+  add_header X-Content-Type-Options nosniff;
+
+  # Proxy requests to the socat service
+  location / {
+    proxy_pass $SERVICE_ADDRESS;
+    proxy_http_version 1.1;
+    proxy_set_header Host \$host;
+    proxy_set_header X-Real-IP \$remote_addr;
+    proxy_set_header X-Forwarded-For \$remote_addr;
+    proxy_set_header X-Forwarded-Proto \$proxy_x_forwarded_proto;
+    proxy_set_header Upgrade \$http_upgrade;
+    proxy_set_header Connection \$connection_upgrade;
+  }
+}
+EOF
+
+# Restart nginx once more
+echo "Restart nginx once more..."
+systemctl restart nginx
+echo "Try it: https://$URL"