servers/mermet/nginx.nix

   1 {pkgs, lib, config, system, ...}:
   2 let
   3   inherit (builtins) readFile;
   4   inherit (builtins.extraBuiltins) pass;
   5   inherit (lib) types;
   6   inherit (pkgs.lib) loadFile;
   7   inherit (config) networking;
   8   inherit (config.services) nginx;
   9   domainDir = dom: lib.concatStringsSep "/" (lib.reverseList (lib.splitString "." dom));
  10 in
  11 {
  12 imports = [
  13   nginx/sourcephile.fr.nix
  14 ];
  15 options = {
  16   services.nginx = {
  17     x509Dir = lib.mkOption {
  18       type    = types.str;
  19       default = "/var/lib/nginx/x509";
  20     };
  21     webDir = lib.mkOption {
  22       type    = types.str;
  23       default = "/var/www";
  24     };
  25     logDir = lib.mkOption {
  26       type    = types.str;
  27       default = "/var/log/nginx";
  28     };
  29   };
  30 };
  31 config = {
  32   systemd.services.nginx = {
  33     preStart = lib.mkBefore ''
  34       install -D -d -o ${nginx.user} -g ${nginx.group} -m 0700 \
  35        ${nginx.x509Dir} \
  36        ${nginx.webDir} \
  37        ${nginx.logDir}
  38     '';
  39   };
  40   users.groups."acme".members = [nginx.user];
  41   services.nginx = {
  42     enable = true;
  43     stateDir = "/dev/shm/nginx";
  44     eventsConfig = ''
  45       multi_accept on;
  46       use epoll;
  47       worker_connections 1024;
  48     '';
  49     clientMaxBodySize = "20m";
  50     recommendedGzipSettings = true;
  51     recommendedOptimisation = false;
  52     recommendedProxySettings = true;
  53     recommendedTlsSettings = true;
  54     resolver = {
  55       addresses = [ "127.0.0.1:53" ];
  56       valid = "";
  57       ipv6 = networking.defaultGateway6 != null;
  58     };
  59     serverTokens = false;
  60     # Only allow PFS-enabled ciphers with AES256
  61     #sslCiphers = "AES256+EECDH:AES256+EDH:!aNULL";
  62     #sslCiphers = "HIGH:!ADH:!MD5:!CAMELLIA:!SEED:!3DES:!DES:!RC4:!eNULL";
  63     #sslCiphers = "EECDH+aRSA+AESGCM:EDH+aRSA:EECDH+aRSA:+AES256:+AES128:+SHA1:!CAMELLIA:!SEED:!3DES:!DES:!RC4:!eNULL";
  64     sslDhparam = ../../../sec/openssl/dh.pem;
  65     sslProtocols = "TLSv1.3 TLSv1.2";
  66     commonHttpConfig = ''
  67       log_format main '$remote_addr - $remote_user [$time_local] "$request" '
  68                       '$status $body_bytes_sent "$http_referer" '
  69                       '"$http_user_agent" "$http_x_forwarded_for"';
  70       charset UTF-8;
  71       types {
  72         text/html html5;
  73         text/markdown md;
  74       }
  75       '' +
  76       lib.concatStringsSep "\n" (lib.attrValues {
  77         default = ''
  78           default_type application/octet-stream;
  79           root ${nginx.webDir};
  80         '';
  81         security = ''
  82           #error_page 403 = 404;
  83
  84           # Add HSTS header with preloading to HTTPS requests.
  85           # Adding this header to HTTP requests is discouraged
  86           # DOC: https://blog.qualys.com/securitylabs/2016/03/28/the-importance-of-a-proper-http-strict-transport-security-implementation-on-your-web-server
  87           map $scheme $hsts_header {
  88               https   "max-age=31536000; includeSubdomains; preload";
  89           }
  90           add_header Strict-Transport-Security $hsts_header;
  91
  92           # Enable CSP for your services.
  93           #add_header Content-Security-Policy "script-src 'self'; object-src 'none'; base-uri 'none';" always;
  94
  95           # Minimize information leaked to other domains
  96           add_header 'Referrer-Policy' 'origin-when-cross-origin';
  97
  98           # Disable embedding as a frame
  99           add_header X-Frame-Options DENY;
 100
 101           # Prevent injection of code in other mime types (XSS Attacks)
 102           add_header X-Content-Type-Options nosniff;
 103
 104           # Enable XSS protection of the browser.
 105           # May be unnecessary when CSP is configured properly (see above)
 106           add_header X-XSS-Protection "1; mode=block";
 107
 108           # This might create errors
 109           proxy_cookie_path / "/; secure; HttpOnly; SameSite=strict";
 110
 111           # If a client has a session ticket, it can present it to the server and re-negotiation is not necessary.
 112           ssl_session_tickets on;
 113         '';
 114         log = ''
 115           access_log ${nginx.logDir}/access.log main buffer=32k;
 116           error_log  ${nginx.logDir}/error.log warn;
 117           open_log_file_cache max=1000 inactive=20s min_uses=2 valid=1m;
 118         '';
 119         proxy = ''
 120           proxy_cache_use_stale updating;
 121           proxy_temp_path ${nginx.stateDir}/proxy_temp 1 2;
 122         '';
 123         fastcgi = ''
 124           # DOC: http://wiki.nginx.org/HttpFastcgiModule
 125           fastcgi_buffer_size 128k;
 126           fastcgi_buffers 256 4k;
 127           fastcgi_busy_buffers_size 256k;
 128           fastcgi_cache_key "$request_method $scheme://$http_host$request_uri";
 129           fastcgi_cache_path ${nginx.stateDir}/fastcgi_cache
 130                              inactive=10m
 131                              keys_zone=microcache:2M
 132                              levels=1:2
 133                              loader_files=100000
 134                              loader_sleep=1
 135                              loader_threshold=2592000000
 136                              max_size=64M;
 137           fastcgi_connect_timeout 60;
 138           fastcgi_ignore_client_abort off;
 139           fastcgi_intercept_errors on;
 140           fastcgi_max_temp_file_size 2M;
 141           #fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
 142           fastcgi_param SCRIPT_FILENAME $request_filename;
 143           fastcgi_temp_path ${nginx.stateDir}/fastcgi_temp 1 2;
 144         '';
 145         connection = ''
 146           sendfile on;
 147           # If the client stops reading data,
 148           # free up the stale client connection after this much time.
 149           send_timeout 60;
 150           # Causes nginx to attempt to send its HTTP response head
 151           # in one packet, instead of using partial frames.
 152           # This is useful for prepending headers before calling sendfile,
 153           # or for throughput optimization.
 154           tcp_nopush on;
 155           # Don't buffer data-sends (disable Nagle algorithm).
 156           # Good for sending frequent small bursts of data in real time.
 157           tcp_nodelay on;
 158           keepalive_timeout 20;
 159           reset_timedout_connection on;
 160           types_hash_max_size 4096;
 161           server_names_hash_bucket_size 128;
 162         '';
 163         map = ''
 164           # User agents that are to be blocked.
 165           #map $http_user_agent $bad_bot {
 166           #  default 0;
 167           #  libwww-perl 1;
 168           #  ~(?i)(httrack|htmlparser|libwww) 1;
 169           #}
 170           # Referrers that are to be blocked.
 171           #map $http_referer $bad_referer {
 172           #  default 0;
 173           #  ~(?i)(babes|casino|click|diamond|forsale|girl|jewelry|love|nudit|organic|poker|porn|poweroversoftware|replica|sex|teen|webcam|zippo) 1;
 174           #}
 175           #geo $not_local {
 176           #  default 1;
 177           #  127.0.0.1 0;
 178           #}
 179         '';
 180         cache = ''
 181           client_body_buffer_size 4K;
 182             # getconf PAGESIZE
 183             # 4096
 184           client_body_temp_path ${nginx.stateDir}/client_body_temp 1 2;
 185           client_body_timeout 60;
 186           client_header_buffer_size 1k;
 187           client_header_timeout 60;
 188           large_client_header_buffers 4 8k;
 189
 190           open_file_cache max=200000 inactive=20s;
 191           open_file_cache_errors on;
 192           open_file_cache_min_uses 2;
 193           open_file_cache_valid 30s;
 194         '';
 195       });
 196     appendConfig = ''
 197       worker_processes ${toString config.nix.maxJobs};
 198     '';
 199     virtualHosts."_" = {
 200       forceSSL = true;
 201       useACMEHost = networking.domain;
 202     };
 203   };
 204 };
 205 }