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       '' +
  72       lib.concatStringsSep "\n" (lib.attrValues {
  73         default = ''
  74           default_type application/octet-stream;
  75           root ${nginx.webDir};
  76         '';
  77         security = ''
  78           #error_page 403 = 404;
  79
  80           # Add HSTS header with preloading to HTTPS requests.
  81           # Adding this header to HTTP requests is discouraged
  82           # DOC: https://blog.qualys.com/securitylabs/2016/03/28/the-importance-of-a-proper-http-strict-transport-security-implementation-on-your-web-server
  83           map $scheme $hsts_header {
  84               https   "max-age=31536000; includeSubdomains; preload";
  85           }
  86           add_header Strict-Transport-Security $hsts_header;
  87
  88           # Enable CSP for your services.
  89           #add_header Content-Security-Policy "script-src 'self'; object-src 'none'; base-uri 'none';" always;
  90
  91           # Minimize information leaked to other domains
  92           add_header 'Referrer-Policy' 'origin-when-cross-origin';
  93
  94           # Disable embedding as a frame
  95           add_header X-Frame-Options DENY;
  96
  97           # Prevent injection of code in other mime types (XSS Attacks)
  98           add_header X-Content-Type-Options nosniff;
  99
 100           # Enable XSS protection of the browser.
 101           # May be unnecessary when CSP is configured properly (see above)
 102           add_header X-XSS-Protection "1; mode=block";
 103
 104           # This might create errors
 105           proxy_cookie_path / "/; secure; HttpOnly; SameSite=strict";
 106
 107           # If a client has a session ticket, it can present it to the server and re-negotiation is not necessary.
 108           ssl_session_tickets on;
 109         '';
 110         log = ''
 111           access_log ${nginx.logDir}/access.log main buffer=32k;
 112           error_log  ${nginx.logDir}/error.log warn;
 113           open_log_file_cache max=1000 inactive=20s min_uses=2 valid=1m;
 114         '';
 115         proxy = ''
 116           proxy_cache_use_stale updating;
 117           proxy_temp_path ${nginx.stateDir}/proxy_temp 1 2;
 118         '';
 119         fastcgi = ''
 120           # DOC: http://wiki.nginx.org/HttpFastcgiModule
 121           fastcgi_buffer_size 128k;
 122           fastcgi_buffers 256 4k;
 123           fastcgi_busy_buffers_size 256k;
 124           fastcgi_cache_key "$request_method $scheme://$http_host$request_uri";
 125           fastcgi_cache_path ${nginx.stateDir}/fastcgi_cache
 126                              inactive=10m
 127                              keys_zone=microcache:2M
 128                              levels=1:2
 129                              loader_files=100000
 130                              loader_sleep=1
 131                              loader_threshold=2592000000
 132                              max_size=64M;
 133           fastcgi_connect_timeout 60;
 134           fastcgi_ignore_client_abort off;
 135           fastcgi_intercept_errors on;
 136           fastcgi_max_temp_file_size 2M;
 137           #fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
 138           fastcgi_param SCRIPT_FILENAME $request_filename;
 139           fastcgi_temp_path ${nginx.stateDir}/fastcgi_temp 1 2;
 140         '';
 141         connection = ''
 142           sendfile on;
 143           # If the client stops reading data,
 144           # free up the stale client connection after this much time.
 145           send_timeout 60;
 146           # Causes nginx to attempt to send its HTTP response head
 147           # in one packet, instead of using partial frames.
 148           # This is useful for prepending headers before calling sendfile,
 149           # or for throughput optimization.
 150           tcp_nopush on;
 151           # Don't buffer data-sends (disable Nagle algorithm).
 152           # Good for sending frequent small bursts of data in real time.
 153           tcp_nodelay on;
 154           keepalive_timeout 20;
 155           reset_timedout_connection on;
 156           types_hash_max_size 4096;
 157           server_names_hash_bucket_size 128;
 158         '';
 159         map = ''
 160           # User agents that are to be blocked.
 161           #map $http_user_agent $bad_bot {
 162           #  default 0;
 163           #  libwww-perl 1;
 164           #  ~(?i)(httrack|htmlparser|libwww) 1;
 165           #}
 166           # Referrers that are to be blocked.
 167           #map $http_referer $bad_referer {
 168           #  default 0;
 169           #  ~(?i)(babes|casino|click|diamond|forsale|girl|jewelry|love|nudit|organic|poker|porn|poweroversoftware|replica|sex|teen|webcam|zippo) 1;
 170           #}
 171           #geo $not_local {
 172           #  default 1;
 173           #  127.0.0.1 0;
 174           #}
 175         '';
 176         cache = ''
 177           client_body_buffer_size 4K;
 178             # getconf PAGESIZE
 179             # 4096
 180           client_body_temp_path ${nginx.stateDir}/client_body_temp 1 2;
 181           client_body_timeout 60;
 182           client_header_buffer_size 1k;
 183           client_header_timeout 60;
 184           large_client_header_buffers 4 8k;
 185
 186           open_file_cache max=200000 inactive=20s;
 187           open_file_cache_errors on;
 188           open_file_cache_min_uses 2;
 189           open_file_cache_valid 30s;
 190         '';
 191       });
 192     appendConfig = ''
 193       worker_processes ${toString config.nix.maxJobs};
 194     '';
 195     virtualHosts."_" = {
 196       forceSSL = true;
 197       useACMEHost = networking.domain;
 198     };
 199   };
 200 };
 201 }