commit 6bcf89f2174275d11bacb4076e3318c5578708b1 · pyrox.dev/nixpkgs

nixos/modules/misc/ids.nix

···

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             glance = 266;

     

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             couchpotato = 267;

     

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             gogs = 268;

     

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       +
             pdns-recursor = 269;

     

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             # When adding a uid, make sure it doesn't match an existing gid. And don't use uids above 399!

     

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nixos/modules/module-list.nix

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         ./services/networking/pdnsd.nix

     

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         ./services/networking/polipo.nix

     

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         ./services/networking/powerdns.nix

     

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         ./services/networking/pdns-recursor.nix

     

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         ./services/networking/pptpd.nix

     

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         ./services/networking/prayer.nix

     

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         ./services/networking/privoxy.nix

+168

nixos/modules/services/networking/pdns-recursor.nix

···

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       { config, lib, pkgs, ... }:

     

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       with lib;

     

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       let

     

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         dataDir  = "/var/lib/pdns-recursor";

     

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         username = "pdns-recursor";

     

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         cfg   = config.services.pdns-recursor;

     

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         zones = mapAttrsToList (zone: uri: "${zone}.=${uri}") cfg.forwardZones;

     

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       +
       

     

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         configFile = pkgs.writeText "recursor.conf" ''

     

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           local-address=${cfg.dns.address}

     

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           local-port=${toString cfg.dns.port}

     

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           allow-from=${concatStringsSep "," cfg.dns.allowFrom}

     

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       +
       

     

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           webserver-address=${cfg.api.address}

     

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           webserver-port=${toString cfg.api.port}

     

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           webserver-allow-from=${concatStringsSep "," cfg.api.allowFrom}

     

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           forward-zones=${concatStringsSep "," zones}

     

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           export-etc-hosts=${if cfg.exportHosts then "yes" else "no"}

     

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           dnssec=${cfg.dnssecValidation}

     

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           serve-rfc1918=${if cfg.serveRFC1918 then "yes" else "no"}

     

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           ${cfg.extraConfig}

     

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         '';

     

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       in {

     

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         options.services.pdns-recursor = {

     

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           enable = mkEnableOption "PowerDNS Recursor, a recursive DNS server";

     

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           dns.address = mkOption {

     

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             type = types.str;

     

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             default = "0.0.0.0";

     

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             description = ''

     

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               IP address Recursor DNS server will bind to.

     

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             '';

     

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           };

     

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           dns.port = mkOption {

     

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             type = types.int;

     

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             default = 53;

     

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             description = ''

     

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               Port number Recursor DNS server will bind to.

     

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             '';

     

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           };

     

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           dns.allowFrom = mkOption {

     

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             type = types.listOf types.str;

     

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             default = [ "10.0.0.0/8" "172.16.0.0/12" "192.168.0.0/16" ];

     

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             example = [ "0.0.0.0/0" ];

     

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             description = ''

     

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               IP address ranges of clients allowed to make DNS queries.

     

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             '';

     

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           };

     

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           api.address = mkOption {

     

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             type = types.str;

     

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             default = "0.0.0.0";

     

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             description = ''

     

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               IP address Recursor REST API server will bind to.

     

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             '';

     

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           };

     

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           api.port = mkOption {

     

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             type = types.int;

     

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             default = 8082;

     

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             description = ''

     

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               Port number Recursor REST API server will bind to.

     

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             '';

     

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           };

     

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           api.allowFrom = mkOption {

     

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             type = types.listOf types.str;

     

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             default = [ "0.0.0.0/0" ];

     

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             description = ''

     

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               IP address ranges of clients allowed to make API requests.

     

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             '';

     

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           };

     

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           exportHosts = mkOption {

     

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             type = types.bool;

     

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             default = false;

     

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             description = ''

     

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              Whether to export names and IP addresses defined in /etc/hosts.

     

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             '';

     

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           };

     

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           forwardZones = mkOption {

     

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             type = types.attrs;

     

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             example = { eth = "127.0.0.1:5353"; };

     

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             default = {};

     

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             description = ''

     

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               DNS zones to be forwarded to other servers.

     

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             '';

     

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           };

     

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           dnssecValidation = mkOption {

     

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             type = types.enum ["off" "process-no-validate" "process" "log-fail" "validate"];

     

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             default = "validate";

     

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             description = ''

     

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               Controls the level of DNSSEC processing done by the PowerDNS Recursor.

     

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               See https://doc.powerdns.com/md/recursor/dnssec/ for a detailed explanation.

     

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             '';

     

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           };

     

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           serveRFC1918 = mkOption {

     

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             type = types.bool;

     

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             default = true;

     

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             description = ''

     

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               Whether to directly resolve the RFC1918 reverse-mapping domains:

     

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               <literal>10.in-addr.arpa</literal>,

     

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               <literal>168.192.in-addr.arpa</literal>,

     

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               <literal>16-31.172.in-addr.arpa</literal>

     

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               This saves load on the AS112 servers.

     

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             '';

     

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           };

     

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           extraConfig = mkOption {

     

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             type = types.lines;

     

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             default = "";

     

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             description = ''

     

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               Extra options to be appended to the configuration file.

     

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             '';

     

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           };

     

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         };

     

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         config = mkIf cfg.enable {

     

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           users.extraUsers."${username}" = {

     

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             home = dataDir;

     

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             createHome = true;

     

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             uid = config.ids.uids.pdns-recursor;

     

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             description = "PowerDNS Recursor daemon user";

     

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           };

     

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           systemd.services.pdns-recursor = {

     

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             unitConfig.Documentation = "man:pdns_recursor(1) man:rec_control(1)";

     

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             description = "PowerDNS recursive server";

     

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             wantedBy = [ "multi-user.target" ];

     

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             after    = [ "network.target" ];

     

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       +
       

     

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             serviceConfig = {

     

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               User = username;

     

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               Restart    ="on-failure";

     

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               RestartSec = "5";

     

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               PrivateTmp = true;

     

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               PrivateDevices = true;

     

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               AmbientCapabilities = "cap_net_bind_service";

     

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               ExecStart = ''${pkgs.pdns-recursor}/bin/pdns_recursor \

     

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                 --config-dir=${dataDir} \

     

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                 --socket-dir=${dataDir} \

     

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                 --disable-syslog

     

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               '';

     

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             };

     

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             preStart = ''

     

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               # Link configuration file into recursor home directory

     

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               configPath=${dataDir}/recursor.conf

     

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               if [ "$(realpath $configPath)" != "${configFile}" ]; then

     

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                 rm -f $configPath

     

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                 ln -s ${configFile} $configPath

     

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               fi

     

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             '';

     

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           };

     

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         };

     

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       }