##
# Friendica Nginx configuration
# by Olaf Conradi
#
# On Debian based distributions you can add this file to
# /etc/nginx/sites-available
#
# Then customize to your needs. To enable the configuration
# symlink it to /etc/nginx/sites-enabled and reload Nginx using
#
# service nginx reload
##

##
# You should look at the following URL's in order to grasp a solid understanding
# of Nginx configuration files in order to fully unleash the power of Nginx.
#
# http://wiki.nginx.org/Pitfalls
# http://wiki.nginx.org/QuickStart
# http://wiki.nginx.org/Configuration
##

##
# by https://syshero.org/2018-04-13-nginx-unique-request-identifier/
# if X-Request-ID is set, NGINX will forward the same value to the next upstream
# if the header is not set, NGINX will generate a random request identifier and add it to the request.
#
# To guarantee backward compatibility, map to format the $request_id variable to a format that matches any old setups.
##

map $request_id $formatted_id {
  "~*(?<p1>[0-9a-f]{8})(?<p2>[0-9a-f]{4})(?<p3>[0-9a-f]{4})(?<p4>[0-9a-f]{4})(?<p5>.*)$" "${p1}-${p2}-${p3}-${p4}-${p5}";
}

map $http_x_request_id $uuid {
  default   "${request_id}";
  ~*        "${http_x_request_id}";
}


##
# This configuration assumes your domain is example.net
# You have a separate subdomain friendica.example.net
# You want all Friendica traffic to be https
# You have an SSL certificate and key for your subdomain
# You have PHP FastCGI Process Manager (php5-fpm) running on localhost
# You have Friendica installed in /var/www/friendica
##

server {
  listen 80;
  server_name friendica.example.net;

  index index.php;
  root /var/www/friendica;
  rewrite ^ https://$server_name$request_uri? permanent;
}

##
# Configure Friendica with SSL
#
# All requests are routed to the front controller
# except for certain known file types like images, css, etc.
# Those are served statically whenever possible with a
# fall back to the front controller (needed for avatars, for example)
##

server {
  listen 443 ssl;
  server_name friendica.example.net;

  #Traditional SSL
  ssl_certificate /etc/nginx/ssl/friendica.example.net.chain.pem;
  ssl_certificate_key /etc/nginx/ssl/example.net.key;

  # If you have used letsencrypt as your SSL provider, remove the previous two lines, and uncomment the following two (adjusting the path) instead.
  # ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
  # ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;

  ssl_session_timeout 5m;
  ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
  ssl_ciphers ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS;
  ssl_prefer_server_ciphers on;

  fastcgi_param HTTPS on;

  index index.php;
  charset utf-8;
  root /var/www/friendica;
  access_log /var/log/nginx/friendica.log;

  # Uncomment the following line to include a standard configuration file Note
  # that the most specific rule wins and your standard configuration will
  # therefore *add* to this file, but not override it.
  #include standard.conf

  # allow uploads up to 20MB in size
  client_max_body_size 20m;
  client_body_buffer_size 128k;

  # add the request id header to show it in the HTTP header output
  add_header X-Request-ID $uuid;

  # rewrite to front controller as default rule
  location / {
    try_files $uri /index.php?pagename=$uri&$args;
  }

  # make sure webfinger and other well known services aren't blocked
  # by denying dot files and rewrite request to the front controller
  location ^~ /.well-known/ {
    allow all;
    rewrite ^ /index.php?pagename=$uri;
  }

  include mime.types;

  # statically serve these file types when possible otherwise fall back to
  # front controller allow browser to cache them added .htm for advanced source
  # code editor library
  #location ~* \.(jpg|jpeg|gif|png|ico|css|js|htm|html|ttf|woff|svg)$ {
  #  expires 30d;
  #  try_files $uri /index.php?pagename=$uri&$args;
  #}

  # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
  # or a unix socket
  location ~* \.php$ {
    # Zero-day exploit defense.
    # http://forum.nginx.org/read.php?2,88845,page=3
    # Won't work properly (404 error) if the file is not stored on this
    # server, which is entirely possible with php-fpm/php-fcgi.
    # Comment the 'try_files' line out if you set up php-fpm/php-fcgi on
    # another machine.  And then cross your fingers that you won't get hacked.
    try_files $uri =404;

    # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini
    fastcgi_split_path_info ^(.+\.php)(/.+)$;

    # With php5-cgi alone:
    # fastcgi_pass 127.0.0.1:9000;

    # With php7.0-fpm:
    fastcgi_pass unix:/var/run/php/php7.4-fpm.sock;

    include fastcgi_params;
    fastcgi_index index.php;
    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    fastcgi_param HTTP_X_REQUEST_ID $uuid;
		
    fastcgi_buffers 16 16k; 
    fastcgi_buffer_size 32k;
  }

  # block these file types
  location ~* \.(tpl|md|tgz|log|out)$ {
    deny all;
  }

  # deny access to all dot files
  location ~ /\. {
    deny all;
  }

  # deny access to the CLI scripts
  location ^~ /bin {
    deny all;
  }
}