nixos/profiles/services/nginx.nix

   1 { inputs, pkgs, lib, config, host, ... }:
   2 let
   3   inherit (lib) types;
   4   inherit (config) networking;
   5   inherit (config.services) nginx;
   6 in
   7 {
   8 options = {
   9   services.nginx = {
  10     configs = lib.mkOption {
  11       type = types.attrsOf types.lines;
  12       default = {};
  13       description = ''
  14         Make some configs available to all virtual hosts.
  15         Useful to workaround the reset of add_header:
  16         https://blog.g3rt.nl/nginx-add_header-pitfall.html
  17       '';
  18       #apply = lib.mapAttrs (name: pkgs.writeText "${name}.conf");
  19     };
  20   };
  21 };
  22 config = {
  23 systemd.tmpfiles.rules = [
  24   "d '/dev/shm/nginx' '750' '${nginx.user}' '${nginx.group}' - -"
  25 ];
  26 systemd.services.nginx = {
  27   requires = [ "systemd-tmpfiles-setup-dev.service" ];
  28   serviceConfig = {
  29     # FIXME: remove all the mkForce in LogsDirectory
  30     # whenever upstream uses a list instead of a string.
  31     LogsDirectory = lib.mkForce ["nginx"];
  32     StateDirectory = ["nginx"];
  33     StateDirectoryMode = "2770";
  34     #BindPaths = ["/dev/shm/nginx:/var/cache/nginx"];
  35   };
  36 };
  37 services.nginx = {
  38   eventsConfig = ''
  39     multi_accept on;
  40     use epoll;
  41     worker_connections 1024;
  42   '';
  43   clientMaxBodySize = "20m";
  44   recommendedGzipSettings = true;
  45   recommendedOptimisation = false;
  46   recommendedProxySettings = true;
  47   recommendedTlsSettings = true;
  48   resolver = {
  49     ipv6 = lib.mkDefault (networking.defaultGateway6 != null);
  50   };
  51   serverTokens = false;
  52   # Only allow PFS-enabled ciphers with AES256
  53   #sslCiphers = "AES256+EECDH:AES256+EDH:!aNULL";
  54   #sslCiphers = "HIGH:!ADH:!MD5:!CAMELLIA:!SEED:!3DES:!DES:!RC4:!eNULL";
  55   #sslCiphers = "EECDH+aRSA+AESGCM:EDH+aRSA:EECDH+aRSA:+AES256:+AES128:+SHA1:!CAMELLIA:!SEED:!3DES:!DES:!RC4:!eNULL";
  56   sslDhparam = inputs.secrets + "/openssl/dh.pem";
  57   sslProtocols = "TLSv1.3 TLSv1.2";
  58   configs = rec {
  59     http_add_headers = ''
  60       # Enable CSP
  61       #add_header Content-Security-Policy "script-src 'self'; object-src 'none'; base-uri 'none';" always;
  62
  63       # Enable XSS protection of the browser.
  64       # May be unnecessary when CSP is configured properly (see above)
  65       add_header X-XSS-Protection "1; mode=block";
  66
  67       # Minimize information leaked to other domains
  68       add_header 'Referrer-Policy' 'origin-when-cross-origin';
  69
  70       # Restrict embedding as a frame
  71       #add_header X-Frame-Options SAMEORIGIN;
  72
  73       # Prevent injection of code in other mime types (XSS Attacks)
  74       add_header X-Content-Type-Options nosniff;
  75     '';
  76     https_add_headers = ''
  77       ${http_add_headers}
  78       # Add HSTS header with preloading to HTTPS requests.
  79       # Adding this header to HTTP requests is discouraged,
  80       # as doing so makes the connection vulnerable to SSL stripping attacks
  81       # DOC: https://blog.qualys.com/securitylabs/2016/03/28/the-importance-of-a-proper-http-strict-transport-security-implementation-on-your-web-server
  82       add_header Strict-Transport-Security $hsts_header;
  83     '';
  84   };
  85   commonHttpConfig = ''
  86     log_format main '$remote_addr - $remote_user [$time_local] "$request" '
  87                     '$status $body_bytes_sent "$http_referer" '
  88                     '"$http_user_agent" "$http_x_forwarded_for"';
  89     log_format json escape=json '{'
  90       '"time_local":"$time_local",'
  91       '"host":"$host",'
  92       '"request":"$request",'
  93       '"status":"$status",'
  94       '"http_referrer":"$http_referer",'
  95       '"remote_addr":"$remote_addr",'
  96       '"remote_user":"$remote_user",'
  97       '"msec":"$msec",'
  98       '"body_bytes_sent":"$body_bytes_sent",'
  99       '"bytes_sent":"$bytes_sent",'
 100       '"http_user_agent":"$http_user_agent",'
 101       '"request_length":"$request_length",'
 102       '"request_method":"$request_method",'
 103       '"request_time":"$request_time",'
 104       '"request_uri":"$request_uri",'
 105       '"server_protocol":"$server_protocol",'
 106       '"ssl_protocol":"$ssl_protocol",'
 107       '"upstream_addr":"$upstream_addr",'
 108       '"upstream_connect_time":"$upstream_connect_time",'
 109       '"upstream_response_time":"$upstream_response_time"'
 110     '}';
 111     charset UTF-8;
 112     types {
 113       text/html html5;
 114       text/plain dump;
 115     }
 116     '' +
 117     lib.concatStringsSep "\n" (lib.attrValues {
 118       default = ''
 119         #default_type application/octet-stream;
 120         root /var/lib/nginx;
 121       '';
 122       security = ''
 123         #error_page 403 = 404;
 124
 125         ${nginx.configs.http_add_headers}
 126
 127         # This might create errors
 128         #proxy_cookie_path / "/; secure; HttpOnly; SameSite=strict";
 129       '';
 130       log = ''
 131         access_log /var/log/nginx/access.json json;
 132         error_log  /var/log/nginx/error.log warn;
 133         open_log_file_cache max=1000 inactive=20s min_uses=2 valid=1m;
 134       '';
 135       proxy = ''
 136         proxy_cache_use_stale updating;
 137         proxy_temp_path /var/cache/nginx/proxy_temp 1 2;
 138       '';
 139       fastcgi = ''
 140         # DOC: http://wiki.nginx.org/HttpFastcgiModule
 141         fastcgi_buffer_size 128k;
 142         fastcgi_buffers 256 4k;
 143         fastcgi_busy_buffers_size 256k;
 144         fastcgi_cache_key "$request_method $scheme://$http_host$request_uri";
 145         fastcgi_connect_timeout 60;
 146         fastcgi_ignore_client_abort off;
 147         fastcgi_intercept_errors on;
 148         fastcgi_max_temp_file_size 2M;
 149         #fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
 150         fastcgi_param SCRIPT_FILENAME $request_filename;
 151         fastcgi_temp_path /var/cache/nginx/fastcgi_temp 1 2;
 152       '';
 153       connection = ''
 154         sendfile on;
 155         # If the client stops reading data,
 156         # free up the stale client connection after this much time.
 157         send_timeout 60;
 158         # Causes nginx to attempt to send its HTTP response head
 159         # in one packet, instead of using partial frames.
 160         # This is useful for prepending headers before calling sendfile,
 161         # or for throughput optimization.
 162         tcp_nopush on;
 163         # Don't buffer data-sends (disable Nagle algorithm).
 164         # Good for sending frequent small bursts of data in real time.
 165         tcp_nodelay on;
 166         keepalive_timeout 20;
 167         reset_timedout_connection on;
 168         server_names_hash_bucket_size 128;
 169       '';
 170       map = ''
 171         map $time_iso8601 $date {
 172           default 'date-not-found';
 173           '~^(?<year>\d{4})-(?<month>\d{2})-(?<day>\d{2})' $year-$month-$day;
 174         }
 175
 176         map $scheme $hsts_header {
 177           https  "max-age=31536000; includeSubdomains; preload";
 178         }
 179
 180         # User agents that are to be blocked.
 181         #map $http_user_agent $bad_bot {
 182         #  default 0;
 183         #  libwww-perl 1;
 184         #  ~(?i)(httrack|htmlparser|libwww) 1;
 185         #}
 186         # Referrers that are to be blocked.
 187         #map $http_referer $bad_referer {
 188         #  default 0;
 189         #  ~(?i)(babes|casino|click|diamond|forsale|girl|jewelry|love|nudit|organic|poker|porn|poweroversoftware|replica|sex|teen|webcam|zippo) 1;
 190         #}
 191         #geo $not_local {
 192         #  default 1;
 193         #  127.0.0.1 0;
 194         #}
 195       '';
 196       cache = ''
 197         client_body_buffer_size 4K;
 198           # getconf PAGESIZE
 199           # 4096
 200         client_body_temp_path /var/cache/nginx/client_body_temp 1 2;
 201         client_body_timeout 60;
 202         client_header_buffer_size 1k;
 203         client_header_timeout 60;
 204         large_client_header_buffers 4 8k;
 205
 206         open_file_cache max=200000 inactive=20s;
 207         open_file_cache_errors on;
 208         open_file_cache_min_uses 2;
 209         open_file_cache_valid 30s;
 210       '';
 211     });
 212   appendConfig = ''
 213     worker_processes ${toString host.CPUs};
 214   '';
 215 };
 216 };
 217 }