607 lines
19 KiB
Nix
607 lines
19 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.nginx;
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virtualHosts = mapAttrs (vhostName: vhostConfig:
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let
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serverName = if vhostConfig.serverName != null
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then vhostConfig.serverName
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else vhostName;
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in
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vhostConfig // {
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inherit serverName;
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} // (optionalAttrs vhostConfig.enableACME {
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sslCertificate = "/var/lib/acme/${serverName}/fullchain.pem";
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sslCertificateKey = "/var/lib/acme/${serverName}/key.pem";
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})
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) cfg.virtualHosts;
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enableIPv6 = config.networking.enableIPv6;
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recommendedProxyConfig = pkgs.writeText "nginx-recommended-proxy-headers.conf" ''
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proxy_set_header Host $host;
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proxy_set_header X-Real-IP $remote_addr;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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proxy_set_header X-Forwarded-Proto $scheme;
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proxy_set_header X-Forwarded-Host $host;
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proxy_set_header X-Forwarded-Server $host;
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proxy_set_header Accept-Encoding "";
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'';
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upstreamConfig = toString (flip mapAttrsToList cfg.upstreams (name: upstream: ''
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upstream ${name} {
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${toString (flip mapAttrsToList upstream.servers (name: server: ''
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server ${name} ${optionalString server.backup "backup"};
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''))}
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}
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''));
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configFile = pkgs.writeText "nginx.conf" ''
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user ${cfg.user} ${cfg.group};
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error_log stderr;
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daemon off;
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${cfg.config}
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${optionalString (cfg.eventsConfig != "" || cfg.config == "") ''
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events {
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${cfg.eventsConfig}
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}
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''}
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${optionalString (cfg.httpConfig == "" && cfg.config == "") ''
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http {
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include ${cfg.package}/conf/mime.types;
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include ${cfg.package}/conf/fastcgi.conf;
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include ${cfg.package}/conf/uwsgi_params;
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${optionalString (cfg.resolver.addresses != []) ''
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resolver ${toString cfg.resolver.addresses} ${optionalString (cfg.resolver.valid != "") "valid=${cfg.resolver.valid}"};
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''}
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${upstreamConfig}
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${optionalString (cfg.recommendedOptimisation) ''
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# optimisation
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sendfile on;
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tcp_nopush on;
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tcp_nodelay on;
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keepalive_timeout 65;
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types_hash_max_size 2048;
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''}
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ssl_protocols ${cfg.sslProtocols};
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ssl_ciphers ${cfg.sslCiphers};
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${optionalString (cfg.sslDhparam != null) "ssl_dhparam ${cfg.sslDhparam};"}
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${optionalString (cfg.recommendedTlsSettings) ''
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ssl_session_cache shared:SSL:42m;
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ssl_session_timeout 23m;
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ssl_ecdh_curve secp384r1;
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ssl_prefer_server_ciphers on;
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ssl_stapling on;
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ssl_stapling_verify on;
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''}
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${optionalString (cfg.recommendedGzipSettings) ''
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gzip on;
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gzip_disable "msie6";
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gzip_proxied any;
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gzip_comp_level 9;
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gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
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gzip_vary on;
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''}
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${optionalString (cfg.recommendedProxySettings) ''
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proxy_redirect off;
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proxy_connect_timeout 90;
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proxy_send_timeout 90;
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proxy_read_timeout 90;
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proxy_http_version 1.0;
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include ${recommendedProxyConfig};
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''}
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# $connection_upgrade is used for websocket proxying
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map $http_upgrade $connection_upgrade {
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default upgrade;
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''' close;
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}
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client_max_body_size ${cfg.clientMaxBodySize};
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server_tokens ${if cfg.serverTokens then "on" else "off"};
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${cfg.commonHttpConfig}
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${vhosts}
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${optionalString cfg.statusPage ''
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server {
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listen 80;
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${optionalString enableIPv6 "listen [::]:80;" }
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server_name localhost;
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location /nginx_status {
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stub_status on;
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access_log off;
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allow 127.0.0.1;
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${optionalString enableIPv6 "allow ::1;"}
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deny all;
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}
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}
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''}
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${cfg.appendHttpConfig}
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}''}
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${optionalString (cfg.httpConfig != "") ''
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http {
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include ${cfg.package}/conf/mime.types;
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include ${cfg.package}/conf/fastcgi.conf;
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include ${cfg.package}/conf/uwsgi_params;
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${cfg.httpConfig}
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}''}
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${cfg.appendConfig}
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'';
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vhosts = concatStringsSep "\n" (mapAttrsToList (vhostName: vhost:
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let
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onlySSL = vhost.onlySSL || vhost.enableSSL;
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hasSSL = onlySSL || vhost.addSSL || vhost.forceSSL;
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defaultListen =
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if vhost.listen != [] then vhost.listen
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else ((optionals hasSSL (
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singleton { addr = "0.0.0.0"; port = 443; ssl = true; }
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++ optional enableIPv6 { addr = "[::]"; port = 443; ssl = true; }
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)) ++ optionals (!onlySSL) (
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singleton { addr = "0.0.0.0"; port = 80; ssl = false; }
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++ optional enableIPv6 { addr = "[::]"; port = 80; ssl = false; }
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));
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hostListen =
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if vhost.forceSSL
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then filter (x: x.ssl) defaultListen
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else defaultListen;
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listenString = { addr, port, ssl, ... }:
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"listen ${addr}:${toString port} "
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+ optionalString ssl "ssl http2 "
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+ optionalString vhost.default "default_server "
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+ ";";
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redirectListen = filter (x: !x.ssl) defaultListen;
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acmeLocation = ''
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location /.well-known/acme-challenge {
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${optionalString (vhost.acmeFallbackHost != null) "try_files $uri @acme-fallback;"}
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root ${vhost.acmeRoot};
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auth_basic off;
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}
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${optionalString (vhost.acmeFallbackHost != null) ''
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location @acme-fallback {
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auth_basic off;
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proxy_pass http://${vhost.acmeFallbackHost};
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}
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''}
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'';
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in ''
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${optionalString vhost.forceSSL ''
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server {
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${concatMapStringsSep "\n" listenString redirectListen}
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server_name ${vhost.serverName} ${concatStringsSep " " vhost.serverAliases};
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${optionalString vhost.enableACME acmeLocation}
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location / {
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return 301 https://$host$request_uri;
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}
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}
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''}
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server {
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${concatMapStringsSep "\n" listenString hostListen}
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server_name ${vhost.serverName} ${concatStringsSep " " vhost.serverAliases};
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${optionalString vhost.enableACME acmeLocation}
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${optionalString (vhost.root != null) "root ${vhost.root};"}
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${optionalString (vhost.globalRedirect != null) ''
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return 301 http${optionalString hasSSL "s"}://${vhost.globalRedirect}$request_uri;
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''}
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${optionalString hasSSL ''
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ssl_certificate ${vhost.sslCertificate};
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ssl_certificate_key ${vhost.sslCertificateKey};
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''}
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${optionalString (vhost.basicAuth != {}) (mkBasicAuth vhostName vhost.basicAuth)}
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${mkLocations vhost.locations}
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${vhost.extraConfig}
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}
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''
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) virtualHosts);
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mkLocations = locations: concatStringsSep "\n" (mapAttrsToList (location: config: ''
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location ${location} {
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${optionalString (config.proxyPass != null && !cfg.proxyResolveWhileRunning)
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"proxy_pass ${config.proxyPass};"
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}
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${optionalString (config.proxyPass != null && cfg.proxyResolveWhileRunning) ''
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set $nix_proxy_target "${config.proxyPass}";
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proxy_pass $nix_proxy_target;
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''}
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${optionalString config.proxyWebsockets ''
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proxy_http_version 1.1;
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proxy_set_header Upgrade $http_upgrade;
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proxy_set_header Connection $connection_upgrade;
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''}
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${optionalString (config.index != null) "index ${config.index};"}
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${optionalString (config.tryFiles != null) "try_files ${config.tryFiles};"}
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${optionalString (config.root != null) "root ${config.root};"}
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${optionalString (config.alias != null) "alias ${config.alias};"}
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${config.extraConfig}
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${optionalString (config.proxyPass != null && cfg.recommendedProxySettings) "include ${recommendedProxyConfig};"}
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}
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'') locations);
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mkBasicAuth = vhostName: authDef: let
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htpasswdFile = pkgs.writeText "${vhostName}.htpasswd" (
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concatStringsSep "\n" (mapAttrsToList (user: password: ''
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${user}:{PLAIN}${password}
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'') authDef)
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);
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in ''
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auth_basic secured;
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auth_basic_user_file ${htpasswdFile};
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'';
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in
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{
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options = {
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services.nginx = {
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enable = mkEnableOption "Nginx Web Server";
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statusPage = mkOption {
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default = false;
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type = types.bool;
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description = "
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Enable status page reachable from localhost on http://127.0.0.1/nginx_status.
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";
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};
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recommendedTlsSettings = mkOption {
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default = false;
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type = types.bool;
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description = "
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Enable recommended TLS settings.
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";
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};
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recommendedOptimisation = mkOption {
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default = false;
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type = types.bool;
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description = "
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Enable recommended optimisation settings.
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";
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};
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recommendedGzipSettings = mkOption {
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default = false;
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type = types.bool;
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description = "
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Enable recommended gzip settings.
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";
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};
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recommendedProxySettings = mkOption {
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default = false;
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type = types.bool;
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description = "
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Enable recommended proxy settings.
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";
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};
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package = mkOption {
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default = pkgs.nginxStable;
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defaultText = "pkgs.nginxStable";
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type = types.package;
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description = "
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Nginx package to use. This defaults to the stable version. Note
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that the nginx team recommends to use the mainline version which
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available in nixpkgs as <literal>nginxMainline</literal>.
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";
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};
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config = mkOption {
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default = "";
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description = "
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Verbatim nginx.conf configuration.
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This is mutually exclusive with the structured configuration
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via virtualHosts and the recommendedXyzSettings configuration
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options. See appendConfig for appending to the generated http block.
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";
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};
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appendConfig = mkOption {
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type = types.lines;
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default = "";
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description = ''
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Configuration lines appended to the generated Nginx
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configuration file. Commonly used by different modules
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providing http snippets. <option>appendConfig</option>
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can be specified more than once and it's value will be
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concatenated (contrary to <option>config</option> which
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can be set only once).
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'';
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};
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commonHttpConfig = mkOption {
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type = types.lines;
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default = "";
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example = ''
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resolver 127.0.0.1 valid=5s;
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log_format myformat '$remote_addr - $remote_user [$time_local] '
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'"$request" $status $body_bytes_sent '
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'"$http_referer" "$http_user_agent"';
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'';
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description = ''
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With nginx you must provide common http context definitions before
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they are used, e.g. log_format, resolver, etc. inside of server
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or location contexts. Use this attribute to set these definitions
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at the appropriate location.
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'';
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};
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httpConfig = mkOption {
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type = types.lines;
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default = "";
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description = "
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Configuration lines to be set inside the http block.
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This is mutually exclusive with the structured configuration
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via virtualHosts and the recommendedXyzSettings configuration
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options. See appendHttpConfig for appending to the generated http block.
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";
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};
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eventsConfig = mkOption {
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type = types.lines;
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default = "";
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description = ''
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Configuration lines to be set inside the events block.
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'';
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};
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appendHttpConfig = mkOption {
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type = types.lines;
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default = "";
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description = "
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Configuration lines to be appended to the generated http block.
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This is mutually exclusive with using config and httpConfig for
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specifying the whole http block verbatim.
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";
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};
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stateDir = mkOption {
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default = "/var/spool/nginx";
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description = "
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Directory holding all state for nginx to run.
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";
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};
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user = mkOption {
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type = types.str;
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default = "nginx";
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description = "User account under which nginx runs.";
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};
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group = mkOption {
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type = types.str;
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default = "nginx";
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description = "Group account under which nginx runs.";
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};
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serverTokens = mkOption {
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type = types.bool;
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default = false;
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description = "Show nginx version in headers and error pages.";
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};
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clientMaxBodySize = mkOption {
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type = types.string;
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default = "10m";
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description = "Set nginx global client_max_body_size.";
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};
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sslCiphers = mkOption {
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type = types.str;
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default = "EECDH+aRSA+AESGCM:EDH+aRSA:EECDH+aRSA:+AES256:+AES128:+SHA1:!CAMELLIA:!SEED:!3DES:!DES:!RC4:!eNULL";
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description = "Ciphers to choose from when negotiating tls handshakes.";
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};
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sslProtocols = mkOption {
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type = types.str;
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default = "TLSv1.2";
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example = "TLSv1 TLSv1.1 TLSv1.2";
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description = "Allowed TLS protocol versions.";
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};
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sslDhparam = mkOption {
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type = types.nullOr types.path;
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default = null;
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example = "/path/to/dhparams.pem";
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description = "Path to DH parameters file.";
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};
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proxyResolveWhileRunning = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Resolves domains of proxyPass targets at runtime
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and not only at start, you have to set
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services.nginx.resolver, too.
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'';
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};
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resolver = mkOption {
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type = types.submodule {
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options = {
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addresses = mkOption {
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type = types.listOf types.str;
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default = [];
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example = literalExample ''[ "[::1]" "127.0.0.1:5353" ]'';
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description = "List of resolvers to use";
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};
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valid = mkOption {
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type = types.str;
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default = "";
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example = "30s";
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description = ''
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By default, nginx caches answers using the TTL value of a response.
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An optional valid parameter allows overriding it
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'';
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};
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};
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};
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description = ''
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Configures name servers used to resolve names of upstream servers into addresses
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'';
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default = {};
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};
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upstreams = mkOption {
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type = types.attrsOf (types.submodule {
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options = {
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servers = mkOption {
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type = types.attrsOf (types.submodule {
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options = {
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backup = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Marks the server as a backup server. It will be passed
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requests when the primary servers are unavailable.
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'';
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};
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};
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});
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description = ''
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Defines the address and other parameters of the upstream servers.
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'';
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default = {};
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};
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};
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});
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description = ''
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Defines a group of servers to use as proxy target.
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'';
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default = {};
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};
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virtualHosts = mkOption {
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type = types.attrsOf (types.submodule (import ./vhost-options.nix {
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inherit config lib;
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}));
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default = {
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localhost = {};
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};
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example = literalExample ''
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{
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"hydra.example.com" = {
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forceSSL = true;
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enableACME = true;
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locations."/" = {
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proxyPass = "http://localhost:3000";
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};
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};
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};
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'';
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description = "Declarative vhost config";
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};
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};
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};
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config = mkIf cfg.enable {
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# TODO: test user supplied config file pases syntax test
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warnings =
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let
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deprecatedSSL = name: config: optional config.enableSSL
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''
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config.services.nginx.virtualHosts.<name>.enableSSL is deprecated,
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use config.services.nginx.virtualHosts.<name>.onlySSL instead.
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'';
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in flatten (mapAttrsToList deprecatedSSL virtualHosts);
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assertions =
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let
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hostOrAliasIsNull = l: l.root == null || l.alias == null;
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in [
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{
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assertion = all (host: all hostOrAliasIsNull (attrValues host.locations)) (attrValues virtualHosts);
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message = "Only one of nginx root or alias can be specified on a location.";
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}
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{
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assertion = all (conf: with conf;
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!(addSSL && (onlySSL || enableSSL)) &&
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!(forceSSL && (onlySSL || enableSSL)) &&
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!(addSSL && forceSSL)
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) (attrValues virtualHosts);
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message = ''
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Options services.nginx.service.virtualHosts.<name>.addSSL,
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services.nginx.virtualHosts.<name>.onlySSL and services.nginx.virtualHosts.<name>.forceSSL
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are mutually exclusive.
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'';
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}
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];
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systemd.services.nginx = {
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description = "Nginx Web Server";
|
|
after = [ "network.target" ];
|
|
wantedBy = [ "multi-user.target" ];
|
|
stopIfChanged = false;
|
|
preStart =
|
|
''
|
|
mkdir -p ${cfg.stateDir}/logs
|
|
chmod 700 ${cfg.stateDir}
|
|
chown -R ${cfg.user}:${cfg.group} ${cfg.stateDir}
|
|
'';
|
|
serviceConfig = {
|
|
ExecStart = "${cfg.package}/bin/nginx -c ${configFile} -p ${cfg.stateDir}";
|
|
ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
|
|
Restart = "always";
|
|
RestartSec = "10s";
|
|
StartLimitInterval = "1min";
|
|
};
|
|
};
|
|
|
|
security.acme.certs = filterAttrs (n: v: v != {}) (
|
|
let
|
|
vhostsConfigs = mapAttrsToList (vhostName: vhostConfig: vhostConfig) virtualHosts;
|
|
acmeEnabledVhosts = filter (vhostConfig: vhostConfig.enableACME) vhostsConfigs;
|
|
acmePairs = map (vhostConfig: { name = vhostConfig.serverName; value = {
|
|
user = cfg.user;
|
|
group = lib.mkDefault cfg.group;
|
|
webroot = vhostConfig.acmeRoot;
|
|
extraDomains = genAttrs vhostConfig.serverAliases (alias: null);
|
|
postRun = ''
|
|
systemctl reload nginx
|
|
'';
|
|
}; }) acmeEnabledVhosts;
|
|
in
|
|
listToAttrs acmePairs
|
|
);
|
|
|
|
users.extraUsers = optionalAttrs (cfg.user == "nginx") (singleton
|
|
{ name = "nginx";
|
|
group = cfg.group;
|
|
uid = config.ids.uids.nginx;
|
|
});
|
|
|
|
users.extraGroups = optionalAttrs (cfg.group == "nginx") (singleton
|
|
{ name = "nginx";
|
|
gid = config.ids.gids.nginx;
|
|
});
|
|
};
|
|
}
|